/* roulang page: index */
:root{
  --bg:#F7F5F1;
  --bg-2:#FFFFFF;
  --sand:#EDE9E2;
  --ink:#0E0F12;
  --ink-2:#2A2C31;
  --ink-3:#6E6A63;
  --accent:#E8552F;
  --signal:#C9F24D;
  --line:rgba(14,15,18,.10);
  --line-strong:rgba(14,15,18,.18);
  --radius-card:6px;
  --radius-img:4px;
  --radius-btn:2px;
  --shadow-1:0 1px 2px rgba(14,15,18,.05);
  --shadow-2:0 18px 44px -20px rgba(14,15,18,.22);
  --ease:cubic-bezier(.22,.61,.36,1);
  --container:1240px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink-2);
  font-family:"Noto Sans SC","HarmonyOS Sans","Source Han Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  font-size:17px;
  line-height:1.85;
  letter-spacing:0;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto;}
a{color:inherit;text-decoration:none;transition:color .24s var(--ease);}
a:focus-visible,button:focus-visible,input:focus-visible{outline:2px solid var(--accent);outline-offset:2px;}
button{font-family:inherit;}
h1,h2,h3,h4{margin:0;color:var(--ink);font-weight:700;letter-spacing:-0.02em;line-height:1.2;}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
figure{margin:0;}
input{font-family:inherit;}

.grid-container{max-width:var(--container);padding-left:24px;padding-right:24px;margin-left:auto;margin-right:auto;}
@media screen and (max-width:520px){
  .grid-container{padding-left:20px;padding-right:20px;}
}

/* ---------- 通用排版 ---------- */
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;letter-spacing:.14em;text-transform:uppercase;
  color:var(--ink-3);font-weight:600;
}
.eyebrow .dot{width:6px;height:6px;background:var(--accent);border-radius:50%;display:inline-block;}
.section{padding:64px 0;}
@media screen and (min-width:768px){.section{padding:96px 0;}}
@media screen and (min-width:1280px){.section{padding:112px 0;}}
.section-head{
  display:flex;align-items:flex-end;justify-content:space-between;gap:24px;
  margin-bottom:32px;flex-wrap:wrap;
}
.section-head h2{
  font-size:clamp(1.4rem,2.2vw,2rem);
  display:flex;align-items:center;gap:20px;flex:1 1 auto;min-width:200px;
}
.section-head h2::after{
  content:"";flex:1 1 auto;height:1px;background:var(--line);display:block;min-width:40px;
}
.section-sub{color:var(--ink-3);font-size:15px;margin-top:10px;max-width:640px;}
.text-link{
  color:var(--accent);font-weight:600;font-size:15px;
  border-bottom:1px solid var(--accent);padding-bottom:2px;
  white-space:nowrap;transition:border-color .24s var(--ease),color .24s var(--ease);
}
.text-link:hover{border-bottom-width:2px;color:#C43F1B;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:48px;padding:0 24px;border:1px solid transparent;
  border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;letter-spacing:.01em;
  cursor:pointer;transition:background-color .24s var(--ease),color .24s var(--ease),transform .24s var(--ease),border-color .24s var(--ease);
}
.btn-primary{background:var(--ink);color:#fff;}
.btn-primary:hover{background:var(--accent);color:#fff;transform:translateY(-1px);}
.btn-ghost{background:transparent;border-color:var(--ink);color:var(--ink);}
.btn-ghost:hover{background:var(--ink);color:#fff;}
.btn-sm{min-height:40px;padding:0 18px;font-size:14px;}
.btn-block{width:100%;}

/* ---------- 顶栏 ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:60;
  background:transparent;border-bottom:1px solid transparent;
  transition:background-color .24s var(--ease),border-color .24s var(--ease);
}
.site-header.is-scrolled{
  background:rgba(247,245,241,.94);
  border-bottom-color:var(--line);
  backdrop-filter:saturate(140%) blur(6px);
}
.nav-inner{
  display:flex;align-items:center;justify-content:space-between;gap:28px;
  min-height:72px;
}
.brand{
  display:inline-flex;align-items:center;gap:9px;
  font-size:19px;font-weight:700;letter-spacing:-0.02em;color:var(--ink);
  white-space:nowrap;
}
.brand .brand-dot{width:6px;height:6px;border-radius:50%;background:var(--accent);display:inline-block;flex:none;}
.main-nav{display:none;align-items:center;gap:28px;}
@media screen and (min-width:1024px){.main-nav{display:flex;}}
.nav-link{
  position:relative;font-size:15px;font-weight:500;color:var(--ink-2);
  padding:6px 0;white-space:nowrap;
}
.nav-link::after{
  content:"";position:absolute;left:0;bottom:0;height:2px;width:100%;
  background:var(--accent);transform:scaleX(0);transform-origin:left center;
  transition:transform .24s var(--ease),opacity .24s var(--ease);opacity:.6;
}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.is-active{color:var(--ink);font-weight:700;}
.nav-link.is-active::after{transform:scaleX(1);opacity:1;}
.nav-actions{display:flex;align-items:center;gap:14px;}
.icon-btn{
  width:40px;height:40px;display:none;align-items:center;justify-content:center;
  border:1px solid var(--line);background:transparent;border-radius:50%;
  color:var(--ink);cursor:pointer;transition:border-color .24s var(--ease),color .24s var(--ease);
}
@media screen and (min-width:1024px){.icon-btn{display:inline-flex;}}
.icon-btn:hover{border-color:var(--ink);color:var(--accent);}
.menu-toggle{
  width:40px;height:36px;background:transparent;border:0;display:flex;
  flex-direction:column;justify-content:center;gap:6px;cursor:pointer;padding:0;
}
.menu-toggle span{display:block;height:1px;background:var(--ink);width:22px;transition:transform .24s var(--ease),opacity .24s var(--ease);}
.menu-toggle span:last-child{width:14px;margin-left:8px;}
.menu-toggle[aria-expanded="true"] span:first-child{transform:translateY(3.5px) rotate(45deg);}
.menu-toggle[aria-expanded="true"] span:last-child{width:22px;margin-left:0;transform:translateY(-3.5px) rotate(-45deg);}
@media screen and (min-width:1024px){.menu-toggle{display:none;}}
.nav-cta{display:none;}
@media screen and (min-width:1024px){.nav-cta{display:inline-flex;}}

.mobile-drawer{
  position:fixed;inset:72px 0 0 0;background:var(--bg);
  padding:24px;transform:translateY(-8px);opacity:0;visibility:hidden;
  transition:opacity .24s var(--ease),transform .24s var(--ease),visibility .24s;
  border-top:1px solid var(--line);overflow-y:auto;
}
.mobile-drawer.is-open{opacity:1;visibility:visible;transform:translateY(0);}
.mobile-drawer a{
  display:block;padding:16px 0 16px 14px;border-bottom:1px solid var(--line);
  font-size:17px;color:var(--ink-2);border-left:3px solid transparent;
}
.mobile-drawer a.is-active{border-left-color:var(--accent);color:var(--ink);font-weight:700;}
.mobile-drawer .drawer-cta{margin-top:24px;}
@media screen and (min-width:1024px){.mobile-drawer{display:none;}}

/* ---------- Hero ---------- */
.hero{padding:120px 0 56px;position:relative;overflow:hidden;}
@media screen and (min-width:768px){.hero{padding:152px 0 72px;}}
@media screen and (min-width:1280px){.hero{padding:168px 0 88px;}}
.hero-copy{padding-bottom:40px;}
@media screen and (min-width:1024px){.hero-copy{padding-bottom:0;padding-right:40px;}}
.hero h1{
  margin:20px 0 0;
  font-size:clamp(2rem,3.6vw,3.2rem);
  line-height:1.12;letter-spacing:-0.03em;
}
.hero-sub{
  margin-top:20px;font-size:17px;color:var(--ink-2);max-width:520px;line-height:1.75;
}
.hero-cta{display:flex;flex-wrap:wrap;gap:12px;margin-top:32px;}
.hero-trust{
  display:flex;flex-wrap:wrap;gap:0;margin-top:36px;
  border-top:1px solid var(--line);padding-top:18px;
}
.hero-trust span{
  font-size:13px;letter-spacing:.06em;color:var(--ink-3);
  padding:0 18px;border-right:1px solid var(--line);
}
.hero-trust span:first-child{padding-left:0;}
.hero-trust span:last-child{border-right:0;}

.phone-stack{
  display:flex;gap:16px;overflow-x:auto;padding:8px 4px 24px;
  scroll-snap-type:x mandatory;-webkit-overflow-scrolling:touch;
}
.phone-stack::-webkit-scrollbar{height:4px;}
.phone-stack::-webkit-scrollbar-thumb{background:var(--line-strong);border-radius:2px;}
.phone-card{
  flex:0 0 auto;width:240px;aspect-ratio:9/16;
  border-radius:var(--radius-card);overflow:hidden;border:1px solid var(--line);
  background:var(--bg-2);box-shadow:var(--shadow-1);scroll-snap-align:start;
  position:relative;transition:transform .32s var(--ease),box-shadow .32s var(--ease);
}
.phone-card img{width:100%;height:100%;object-fit:cover;transition:transform .32s var(--ease);}
.phone-card::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:42%;
  background:linear-gradient(180deg,rgba(14,15,18,0) 0%,rgba(14,15,18,.72) 100%);
}
.phone-card figcaption{
  position:absolute;left:16px;right:16px;bottom:16px;z-index:2;color:#fff;
  font-size:14px;line-height:1.5;font-weight:600;letter-spacing:.01em;
}
.phone-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);}
.phone-card:hover img{transform:scale(1.04);}
.phone-card.p1{transform:rotate(-1.5deg);}
.phone-card.p2{transform:rotate(1.5deg);}
.phone-card.p1:hover,.phone-card.p2:hover{transform:rotate(0) translateY(-4px);}
@media screen and (min-width:768px){
  .phone-stack{overflow:visible;justify-content:flex-end;}
  .phone-card{width:220px;}
}
@media screen and (min-width:1280px){
  .phone-card{width:250px;}
}

/* ---------- 信任数据条 ---------- */
.stats{border-top:1px solid var(--line);border-bottom:1px solid var(--line);background:var(--bg-2);}
.stats-grid{display:grid;grid-template-columns:repeat(2,1fr);}
@media screen and (min-width:768px){.stats-grid{grid-template-columns:repeat(4,1fr);}}
.stat{
  padding:28px 20px;border-right:1px solid var(--line);border-bottom:1px solid var(--line);
}
@media screen and (min-width:768px){
  .stat{border-bottom:0;}
  .stat:last-child{border-right:0;}
}
@media screen and (max-width:767px){
  .stat:nth-child(2n){border-right:0;}
  .stat:nth-child(n+3){border-bottom:0;}
}
.stat .num{
  font-size:clamp(1.8rem,3vw,2.4rem);font-weight:700;color:var(--ink);
  letter-spacing:-0.03em;line-height:1.1;font-family:"Archivo","Inter",system-ui,sans-serif;
}
.stat .num .unit{font-size:1rem;font-weight:600;margin-left:2px;color:var(--ink-3);}
.stat .label{margin-top:8px;font-size:13px;color:var(--ink-3);letter-spacing:.06em;}

/* ---------- 片段卡横滑 ---------- */
.clip-rail{
  display:flex;gap:20px;overflow-x:auto;scroll-snap-type:x mandatory;
  padding:4px 4px 20px;margin:0 -4px;
}
.clip-rail::-webkit-scrollbar{height:4px;}
.clip-rail::-webkit-scrollbar-thumb{background:var(--line-strong);border-radius:2px;}
.clip-card{
  flex:0 0 auto;width:240px;scroll-snap-align:start;
  border-radius:var(--radius-card);overflow:hidden;background:var(--bg-2);
  border:1px solid var(--line);box-shadow:var(--shadow-1);position:relative;
  transition:transform .32s var(--ease),box-shadow .32s var(--ease);
}
@media screen and (min-width:768px){.clip-card{width:260px;}}
.clip-card .thumb{position:relative;aspect-ratio:9/16;overflow:hidden;background:var(--sand);}
.clip-card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .32s var(--ease);}
.clip-card .thumb::after{
  content:"";position:absolute;inset:auto 0 0 0;height:50%;
  background:linear-gradient(180deg,rgba(14,15,18,0) 0%,rgba(14,15,18,.75) 100%);
}
.clip-card .badge{
  position:absolute;top:12px;left:12px;z-index:2;
  background:var(--signal);color:var(--ink);font-size:12px;font-weight:700;
  padding:3px 10px;border-radius:999px;letter-spacing:.04em;
}
.clip-card .play{
  position:absolute;right:12px;bottom:12px;z-index:2;
  width:34px;height:34px;border-radius:50%;border:1px solid rgba(255,255,255,.7);
  display:flex;align-items:center;justify-content:center;color:#fff;font-size:12px;
  transition:background-color .24s var(--ease),border-color .24s var(--ease),color .24s var(--ease);
}
.clip-card .caption{
  position:absolute;left:14px;right:56px;bottom:14px;z-index:2;color:#fff;
  font-size:14px;font-weight:600;line-height:1.5;
}
.clip-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);}
.clip-card:hover .thumb img{transform:scale(1.04);}
.clip-card:hover .play{background:var(--accent);border-color:var(--accent);color:#fff;}

/* ---------- 种草清单 ---------- */
.pick-list{border-top:1px solid var(--line);}
.pick-item{
  display:flex;align-items:center;gap:24px;
  padding:24px 16px;border-bottom:1px solid var(--line);
  transition:background-color .24s var(--ease);
}
.pick-item:hover{background:var(--sand);}
.pick-item .idx{
  font-family:"Archivo","Inter",system-ui,sans-serif;
  font-size:clamp(1.4rem,2.4vw,1.9rem);font-weight:700;letter-spacing:-0.03em;
  color:transparent;-webkit-text-stroke:1px rgba(14,15,18,.35);
  min-width:56px;line-height:1;
}
.pick-item:hover .idx{color:var(--accent);-webkit-text-stroke:1px var(--accent);}
.pick-item .body{flex:1 1 auto;}
.pick-item h3{font-size:1.125rem;font-weight:700;}
.pick-item p{margin-top:6px;font-size:15px;color:var(--ink-3);line-height:1.7;}
.pick-item .arrow{
  color:var(--ink-3);font-size:14px;flex:none;transition:transform .24s var(--ease),color .24s var(--ease);
}
.pick-item:hover .arrow{transform:translateX(6px);color:var(--accent);}

/* ---------- 资讯列表（CMS） ---------- */
.news-grid{display:grid;grid-template-columns:1fr;gap:24px;}
@media screen and (min-width:1024px){
  .news-grid{grid-template-columns:1.25fr 1fr 1fr;}
  .news-lead{grid-column:1;grid-row:1 / span 2;}
}
.news-card{
  background:var(--bg-2);border:1px solid var(--line);border-radius:var(--radius-card);
  overflow:hidden;display:flex;flex-direction:column;
  transition:transform .32s var(--ease),box-shadow .32s var(--ease);
}
.news-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);}
.news-card .cover{aspect-ratio:16/9;overflow:hidden;background:var(--sand);}
.news-lead .cover{aspect-ratio:16/11;}
.news-card .cover img{width:100%;height:100%;object-fit:cover;transition:transform .32s var(--ease);}
.news-card:hover .cover img{transform:scale(1.04);}
.news-body{padding:20px;display:flex;flex-direction:column;gap:10px;flex:1 1 auto;}
.tag{
  display:inline-flex;align-items:center;align-self:flex-start;
  font-size:12px;letter-spacing:.06em;color:var(--ink-2);
  border:1px solid var(--line-strong);border-radius:999px;padding:2px 10px;
}
.tag.solid{background:var(--signal);border-color:var(--signal);color:var(--ink);font-weight:700;}
.news-body h3{
  font-size:1.05rem;line-height:1.5;font-weight:700;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  transition:color .24s var(--ease);
}
.news-lead .news-body h3{font-size:1.35rem;}
.news-card:hover h3{color:var(--accent);}
.news-body .excerpt{
  font-size:14px;color:var(--ink-3);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;gap:10px;
  font-size:13px;color:var(--ink-3);padding-top:6px;
}
.news-meta .sep{width:1px;height:12px;background:var(--line-strong);display:inline-block;}
.empty-state{
  grid-column:1 / -1;border:1px dashed var(--line-strong);border-radius:var(--radius-card);
  padding:40px 24px;text-align:center;color:var(--ink-3);background:var(--bg-2);
}
.empty-state p{font-size:15px;}

/* ---------- 口碑条 ---------- */
.voice-rail{display:flex;gap:20px;overflow-x:auto;padding:4px 4px 20px;scroll-snap-type:x proximity;}
.voice-rail::-webkit-scrollbar{height:4px;}
.voice-rail::-webkit-scrollbar-thumb{background:var(--line-strong);border-radius:2px;}
.voice-card{
  flex:0 0 auto;width:300px;max-width:320px;scroll-snap-align:start;
  background:var(--bg-2);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:22px;display:flex;flex-direction:column;gap:16px;
  transition:border-color .24s var(--ease);
}
.voice-card:hover{border-color:var(--line-strong);}
.voice-card p{font-size:15px;line-height:1.8;color:var(--ink-2);}
.voice-card .who{font-size:13px;color:var(--ink-3);border-top:1px solid var(--line);padding-top:12px;}
.score{display:flex;gap:5px;align-items:center;}
.score i{width:7px;height:7px;border-radius:50%;background:var(--line-strong);display:block;}
.score i.on{background:var(--accent);}

/* ---------- FAQ ---------- */
.faq-list{border-top:1px solid var(--line);}
.faq-item{border-bottom:1px solid var(--line);}
.faq-q{
  width:100%;background:transparent;border:0;text-align:left;cursor:pointer;
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:22px 4px;font-size:1rem;font-weight:600;color:var(--ink);
}
.faq-q .sign{
  flex:none;font-size:20px;line-height:1;color:var(--ink-3);
  transition:transform .24s var(--ease),color .24s var(--ease);
}
.faq-item.is-open .faq-q .sign{transform:rotate(45deg);color:var(--accent);}
.faq-a{
  max-height:0;overflow:hidden;transition:max-height .32s var(--ease);
}
.faq-a p{
  padding:0 4px 24px;font-size:15px;line-height:1.85;color:var(--ink-3);max-width:820px;
}

/* ---------- CTA ---------- */
.cta-band{background:var(--ink);color:#fff;}
.cta-inner{padding:64px 0;}
@media screen and (min-width:768px){.cta-inner{padding:88px 0;}}
.cta-band h2{color:#fff;font-size:clamp(1.6rem,3vw,2.4rem);letter-spacing:-0.03em;max-width:420px;}
.cta-band p{color:rgba(255,255,255,.72);font-size:15px;margin-top:14px;max-width:420px;}
.cta-form{display:flex;gap:12px;flex-wrap:wrap;margin-top:8px;}
.cta-form input{
  flex:1 1 240px;min-height:48px;padding:0 16px;border-radius:var(--radius-btn);
  border:1px solid rgba(255,255,255,.28);background:rgba(255,255,255,.04);
  color:#fff;font-size:15px;transition:border-color .24s var(--ease);
}
.cta-form input::placeholder{color:rgba(255,255,255,.45);}
.cta-form input:focus{outline:none;border-color:var(--accent);}
.cta-form .btn-primary{background:var(--accent);color:#fff;flex:0 0 auto;}
.cta-form .btn-primary:hover{background:#fff;color:var(--ink);}
.cta-note{margin-top:16px;font-size:13px;color:rgba(255,255,255,.5);}

/* ---------- 页脚 ---------- */
.site-footer{border-top:1px solid var(--line);background:var(--bg);padding-top:56px;}
.footer-brand .brand{margin-bottom:16px;}
.footer-brand p{font-size:14px;color:var(--ink-3);max-width:280px;line-height:1.8;}
.social{display:flex;gap:14px;margin-top:20px;}
.social a{
  width:36px;height:36px;border:1px solid var(--line);border-radius:50%;
  display:flex;align-items:center;justify-content:center;color:var(--ink-2);font-size:15px;
  transition:border-color .24s var(--ease),color .24s var(--ease),transform .24s var(--ease);
}
.social a:hover{border-color:var(--ink);color:var(--accent);transform:translateY(-2px);}
.footer-col h4{font-size:14px;letter-spacing:.08em;color:var(--ink);margin-bottom:14px;}
.footer-col ul li{margin-bottom:2px;}
.footer-col a{font-size:14px;color:var(--ink-3);line-height:2.2;display:inline-block;transition:color .24s var(--ease),transform .24s var(--ease);}
.footer-col a:hover{color:var(--accent);transform:translateX(2px);}
.footer-bottom{
  margin-top:48px;border-top:1px solid var(--line);padding:20px 0 28px;
  display:flex;flex-wrap:wrap;gap:10px 24px;align-items:center;justify-content:space-between;
  font-size:13px;color:var(--ink-3);
}
.footer-bottom a{color:var(--ink-3);}
.footer-bottom a:hover{color:var(--accent);}

/* ---------- 入场动效 ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .48s var(--ease),transform .48s var(--ease);}
.reveal.is-in{opacity:1;transform:none;}

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

/* roulang page: article */
:root{
  --bg:#F7F5F1;
  --bg-2:#FFFFFF;
  --sand:#EDE9E2;
  --ink:#0E0F12;
  --ink-2:#2A2C31;
  --muted:#6E6A63;
  --line:rgba(14,15,18,.10);
  --line-strong:rgba(14,15,18,.22);
  --accent:#E8552F;
  --signal:#C9F24D;
  --danger:#B3331F;
  --radius-card:6px;
  --radius-img:4px;
  --radius-btn:2px;
  --radius-pill:999px;
  --shadow-1:0 1px 2px rgba(14,15,18,.05);
  --shadow-2:0 18px 44px -20px rgba(14,15,18,.22);
  --container:1240px;
  --read:720px;
  --font-cn:"Noto Sans SC","HarmonyOS Sans","Source Han Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
  --font-en:"Archivo","Inter","Helvetica Neue",Arial,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--ink);font-family:var(--font-cn);font-size:16px;line-height:1.7;-webkit-font-smoothing:antialiased;overflow-x:hidden}
img{max-width:100%;height:auto;display:block;border-radius:var(--radius-img)}
a{color:inherit;text-decoration:none;transition:color .2s ease,border-color .2s ease}
button,input{font-family:inherit;font-size:inherit;color:inherit}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:-.02em;line-height:1.22}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
::selection{background:var(--signal);color:var(--ink)}
a:focus-visible,button:focus-visible,input:focus-visible{outline:2px solid var(--accent);outline-offset:3px}

.grid-container{max-width:var(--container);margin:0 auto;padding-left:24px;padding-right:24px;width:100%}
.section{padding:64px 0}
@media screen and (min-width:768px){.section{padding:96px 0}}
@media screen and (min-width:1280px){.section{padding:112px 0}}

/* ===== Header ===== */
.site-header{position:sticky;top:0;z-index:80;background:transparent;border-bottom:1px solid transparent;transition:background .24s ease,border-color .24s ease,box-shadow .24s ease}
.site-header.is-scrolled{background:rgba(247,245,241,.92);border-bottom-color:var(--line);box-shadow:0 6px 24px -22px rgba(14,15,18,.6)}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;min-height:76px}
.brand{display:inline-flex;align-items:center;gap:9px;font-size:18px;font-weight:700;letter-spacing:-.02em;color:var(--ink);white-space:nowrap}
.brand-dot{width:6px;height:6px;border-radius:50%;background:var(--accent);flex:0 0 6px}
.brand:hover{color:var(--accent)}
.main-nav{display:flex;align-items:center;gap:28px}
.main-nav .nav-link{position:relative;padding:6px 0;font-size:15px;color:var(--ink-2);white-space:nowrap}
.main-nav .nav-link + .nav-link::before{content:"";position:absolute;left:-14px;top:50%;transform:translateY(-50%);width:1px;height:12px;background:var(--line)}
.main-nav .nav-link::after{content:"";position:absolute;left:0;bottom:0;width:100%;height:2px;background:var(--accent);transform:scaleX(0);transform-origin:left;transition:transform .24s ease,opacity .24s ease;opacity:0}
.main-nav .nav-link:hover{color:var(--ink)}
.main-nav .nav-link:hover::after{transform:scaleX(1);opacity:.6}
.main-nav .nav-link.is-active{color:var(--ink);font-weight:600}
.main-nav .nav-link.is-active::after{transform:scaleX(1);opacity:1}
.header-actions{display:flex;align-items:center;gap:18px}
.icon-btn{display:inline-flex;align-items:center;justify-content:center;width:40px;height:40px;border-radius:var(--radius-pill);border:1px solid transparent;background:transparent;color:var(--ink-2);cursor:pointer;transition:border-color .2s ease,color .2s ease}
.icon-btn:hover{border-color:var(--line-strong);color:var(--accent)}
.header-cta{height:42px;padding:0 20px;font-size:14px}
.nav-toggle{display:none;flex-direction:column;justify-content:center;gap:6px;width:40px;height:40px;background:transparent;border:0;cursor:pointer;padding:0}
.nav-toggle span{display:block;width:22px;height:1px;background:var(--ink);margin:0 auto}

/* ===== Buttons ===== */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:48px;padding:0 24px;border-radius:var(--radius-btn);font-size:15px;font-weight:600;letter-spacing:.01em;border:1px solid transparent;cursor:pointer;transition:background .26s cubic-bezier(.22,.61,.36,1),color .26s ease,transform .26s ease,border-color .26s ease}
.btn-primary{background:var(--ink);color:#fff}
.btn-primary:hover{background:var(--accent);color:#fff;transform:translateY(-1px)}
.btn-ghost{background:transparent;border-color:var(--ink);color:var(--ink)}
.btn-ghost:hover{background:var(--ink);color:#fff}
.btn-pill{border-radius:var(--radius-pill)}
.btn-outline-pill{height:44px;padding:0 22px;border-radius:var(--radius-pill);border:1px solid var(--line-strong);background:transparent;color:var(--ink);font-size:14px;font-weight:600}
.btn-outline-pill:hover{border-color:var(--ink);color:var(--accent)}
.link-underline{color:var(--accent);border-bottom:1px solid var(--accent);padding-bottom:1px;font-weight:600;font-size:14px}
.link-underline:hover{border-bottom-width:2px}

/* ===== Section head ===== */
.section-head{display:flex;align-items:center;gap:24px;margin-bottom:32px}
.section-head h2{font-size:clamp(1.35rem,2.2vw,2rem);white-space:nowrap}
.section-head .rule{flex:1;height:1px;background:var(--line)}
.section-head .more{font-size:14px;color:var(--muted);white-space:nowrap}
.section-head .more:hover{color:var(--accent)}

/* ===== Breadcrumb ===== */
.breadcrumb{display:flex;align-items:center;flex-wrap:wrap;gap:8px;font-size:13px;color:var(--muted);letter-spacing:.02em}
.breadcrumb a:hover{color:var(--accent)}
.breadcrumb .sep{color:var(--line-strong)}
.breadcrumb .current{color:var(--ink-2)}

/* ===== Article hero ===== */
.article-hero{padding:40px 0 36px}
@media screen and (min-width:768px){.article-hero{padding:56px 0 48px}}
.article-head{max-width:var(--read);margin:24px auto 0}
.tag{border-radius:var(--radius-pill);font-size:12px;letter-spacing:.06em;padding:5px 12px;display:inline-block}
.tag-outline{border:1px solid var(--line-strong);color:var(--ink-2)}
.tag-outline:hover{border-color:var(--accent);color:var(--accent)}
.tag-signal{background:var(--signal);color:var(--ink);border:0}
.article-title{font-size:clamp(1.75rem,3.4vw,2.85rem);margin:18px 0 20px;letter-spacing:-.03em;line-height:1.18}
.article-meta{display:flex;align-items:center;flex-wrap:wrap;gap:14px;font-size:13px;color:var(--muted);letter-spacing:.02em}
.article-meta .divider{width:1px;height:12px;background:var(--line)}
.article-lead{max-width:var(--read);margin:26px auto 0;font-size:17px;line-height:1.85;color:var(--ink-2)}
.cover-figure{max-width:960px;margin:36px auto 0;border-radius:var(--radius-card);overflow:hidden;border:1px solid var(--line);background:var(--bg-2);box-shadow:var(--shadow-1)}
.cover-figure img{border-radius:0;aspect-ratio:16/9;object-fit:cover;width:100%}
.cover-figure figcaption{font-size:12.5px;color:var(--muted);padding:12px 16px;border-top:1px solid var(--line)}

/* ===== Article body ===== */
.article-wrap{padding:48px 0 0}
.article-body{max-width:var(--read);margin:0 auto;font-size:17.5px;line-height:1.85;color:var(--ink-2)}
.article-body > * + *{margin-top:1.2em}
.article-body p{margin:0 0 1.2em}
.article-body h2{position:relative;font-size:clamp(1.3rem,2vw,1.6rem);color:var(--ink);margin:2.2em 0 1em;padding-left:14px;line-height:1.4}
.article-body h2::before{content:"";position:absolute;left:0;top:.32em;width:3px;height:1em;background:var(--accent);border-radius:2px}
.article-body h3{font-size:1.125rem;color:var(--ink);margin:1.8em 0 .8em}
.article-body h4{font-size:1rem;color:var(--ink);margin:1.5em 0 .6em;font-weight:600}
.article-body a{color:var(--accent);border-bottom:1px solid var(--accent);padding-bottom:1px}
.article-body a:hover{border-bottom-width:2px}
.article-body ul,.article-body ol{padding-left:1.2em;margin:0 0 1.2em}
.article-body ul{list-style:disc}
.article-body ol{list-style:decimal}
.article-body li{margin:.45em 0}
.article-body li::marker{color:var(--accent)}
.article-body blockquote{margin:1.6em 0;padding:18px 22px;background:var(--sand);border-left:2px solid var(--accent);border-radius:0 var(--radius-img) var(--radius-img) 0;color:var(--ink-2);font-size:16.5px}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{border-radius:var(--radius-img);margin:1.6em 0 .6em;width:100%}
.article-body figure{margin:1.6em 0}
.article-body figcaption{font-size:13px;color:var(--muted);text-align:left}
.article-body table{width:100%;border-collapse:collapse;font-size:15px;margin:1.6em 0}
.article-body th,.article-body td{border-bottom:1px solid var(--line);padding:12px 10px;text-align:left}
.article-body th{color:var(--ink);font-weight:600;background:var(--sand)}
.article-body code{background:var(--sand);border-radius:4px;padding:2px 6px;font-size:.92em}
.article-body hr{border:0;border-top:1px solid var(--line);margin:2.4em 0}

.empty-state{max-width:var(--read);margin:0 auto;border:1px dashed var(--line-strong);border-radius:var(--radius-card);padding:56px 28px;text-align:center;background:var(--bg-2)}
.empty-state p{font-size:16px;color:var(--muted);margin-bottom:16px}

/* ===== Related cards ===== */
.card-grid{display:grid;gap:24px;grid-template-columns:1fr}
@media screen and (min-width:640px){.card-grid{grid-template-columns:repeat(2,1fr)}}
@media screen and (min-width:1024px){.card-grid{grid-template-columns:repeat(3,1fr)}}
.card{display:flex;flex-direction:column;background:var(--bg-2);border:1px solid var(--line);border-radius:var(--radius-card);overflow:hidden;box-shadow:var(--shadow-1);transition:transform .32s cubic-bezier(.22,.61,.36,1),box-shadow .32s ease,border-color .32s ease}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:var(--line-strong)}
.card-media{position:relative;overflow:hidden;background:var(--sand)}
.card-media img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:0;transition:transform .32s cubic-bezier(.22,.61,.36,1)}
.card:hover .card-media img{transform:scale(1.04)}
.card-body{padding:20px 22px 24px;display:flex;flex-direction:column;gap:10px;flex:1}
.card-body h3{font-size:17px;line-height:1.45;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card:hover .card-body h3{color:var(--accent)}
.card-body p{font-size:14.5px;color:var(--muted);line-height:1.7;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card-meta{display:flex;align-items:center;gap:12px;font-size:12.5px;color:var(--muted);letter-spacing:.02em;margin-top:auto}

/* ===== FAQ ===== */
.faq-list{max-width:900px;border-top:1px solid var(--line)}
.faq-list .accordion-item{border-bottom:1px solid var(--line);background:transparent}
.faq-list .accordion-title{border:0;background:transparent;padding:24px 44px 24px 0;font-size:17px;font-weight:600;color:var(--ink);position:relative;transition:color .2s ease}
.faq-list .accordion-title:hover{color:var(--accent)}
.faq-list .accordion-title::before{content:"+";position:absolute;right:8px;top:50%;transform:translateY(-50%);font-size:20px;font-weight:400;color:var(--muted);transition:transform .28s ease,color .28s ease;margin:0;line-height:1}
.faq-list .accordion-item.is-active .accordion-title::before{transform:translateY(-50%) rotate(45deg);color:var(--accent)}
.faq-list .accordion-content{border:0;background:transparent;padding:0 44px 24px 0;color:var(--muted);font-size:15.5px;line-height:1.85}

/* ===== CTA ===== */
.cta-band{background:#141518;color:#fff;position:relative;overflow:hidden;border-radius:var(--radius-card)}
.cta-band::after{content:"";position:absolute;inset:0;background-image:url('/assets/images/backpic/back-2.webp');background-size:cover;background-position:center;opacity:.16;pointer-events:none}
.cta-inner{position:relative;z-index:2;padding:56px 28px;display:grid;gap:28px;align-items:center;grid-template-columns:1fr}
@media screen and (min-width:900px){.cta-inner{padding:72px 56px;grid-template-columns:1.1fr 1fr;gap:48px}}
.cta-inner h2{font-size:clamp(1.5rem,2.6vw,2.2rem);color:#fff;letter-spacing:-.02em}
.cta-inner p{margin-top:14px;color:rgba(255,255,255,.72);font-size:15.5px;line-height:1.8;max-width:38em}
.cta-form{display:flex;gap:12px;flex-wrap:wrap}
.cta-form input{flex:1 1 240px;height:48px;padding:0 16px;background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.24);border-radius:var(--radius-btn);color:#fff;transition:border-color .2s ease,background .2s ease}
.cta-form input::placeholder{color:rgba(255,255,255,.5)}
.cta-form input:focus{outline:none;border-color:var(--accent);background:rgba(255,255,255,.1)}
.cta-form .btn{background:#fff;color:var(--ink)}
.cta-form .btn:hover{background:var(--accent);color:#fff}
.cta-note{margin-top:16px;font-size:13px;color:rgba(255,255,255,.55)}

/* ===== Footer ===== */
.site-footer{border-top:1px solid var(--line);background:var(--bg);padding:56px 0 28px;margin-top:96px}
.footer-brand .brand{font-size:17px}
.footer-brand p{margin:16px 0 20px;font-size:14.5px;color:var(--muted);line-height:1.8;max-width:34em}
.social{display:flex;gap:12px}
.social a{display:inline-flex;align-items:center;justify-content:center;width:36px;height:36px;border:1px solid var(--line);border-radius:var(--radius-pill);color:var(--ink-2);font-size:14px;transition:border-color .2s ease,color .2s ease,transform .2s ease}
.social a:hover{border-color:var(--accent);color:var(--accent);transform:translateY(-2px)}
.footer-col h4{font-size:14px;letter-spacing:.05em;color:var(--ink);margin-bottom:16px}
.footer-col ul li{margin-bottom:10px}
.footer-col ul li a{font-size:14.5px;color:var(--muted);line-height:2.2;display:inline-block;transition:color .2s ease,transform .2s ease}
.footer-col ul li a:hover{color:var(--accent);transform:translateX(2px)}
.footer-bottom{margin-top:40px;padding-top:20px;border-top:1px solid var(--line);display:flex;flex-wrap:wrap;gap:10px 24px;justify-content:space-between;font-size:13px;color:var(--muted)}
.footer-bottom a{color:var(--muted);border-bottom:1px solid var(--line-strong)}
.footer-bottom a:hover{color:var(--accent);border-color:var(--accent)}

/* ===== Mobile drawer ===== */
.mobile-drawer{position:fixed;inset:0;z-index:120;background:var(--bg);padding:22px 24px 32px;display:flex;flex-direction:column;gap:24px;transform:translateX(100%);transition:transform .3s cubic-bezier(.22,.61,.36,1);visibility:hidden}
.mobile-drawer.is-open{transform:translateX(0);visibility:visible}
.drawer-head{display:flex;align-items:center;justify-content:space-between}
.drawer-close{width:40px;height:40px;border:1px solid var(--line);border-radius:var(--radius-pill);background:transparent;cursor:pointer;color:var(--ink-2)}
.drawer-close:hover{border-color:var(--accent);color:var(--accent)}
.drawer-nav{display:flex;flex-direction:column;border-top:1px solid var(--line)}
.drawer-nav a{padding:18px 12px;border-bottom:1px solid var(--line);font-size:16px;color:var(--ink-2)}
.drawer-nav a.is-active{color:var(--ink);font-weight:600;border-left:3px solid var(--accent);padding-left:14px}
.drawer-cta{margin-top:auto;width:100%}

@media screen and (max-width:1023px){
  .main-nav{display:none}
  .header-cta{display:none}
  .nav-toggle{display:flex}
}
@media screen and (min-width:1024px){
  .mobile-drawer{display:none}
  .nav-toggle{display:none}
}
@media screen and (max-width:640px){
  .grid-container{padding-left:20px;padding-right:20px}
  .article-body{font-size:16.5px}
  .section-head{gap:16px}
  .section-head h2{white-space:normal}
  .cover-figure{margin-top:26px}
}
@media (prefers-reduced-motion: reduce){
  *,*::before,*::after{animation:none !important;transition:none !important;scroll-behavior:auto !important}
}

/* roulang page: category1 */
:root{
  --bg:#F7F5F1;
  --bg-2:#FFFFFF;
  --sand:#EDE9E2;
  --ink:#0E0F12;
  --ink-2:#2A2C31;
  --muted:#6E6A63;
  --line:rgba(14,15,18,.10);
  --line-strong:rgba(14,15,18,.18);
  --accent:#E8552F;
  --signal:#C9F24D;
  --danger:#B3331F;
  --radius-card:6px;
  --radius-img:4px;
  --radius-btn:2px;
  --shadow-1:0 1px 2px rgba(14,15,18,.05);
  --shadow-2:0 18px 44px -20px rgba(14,15,18,.22);
  --space-section:64px;
  --ease:cubic-bezier(.22,.61,.36,1);
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:"Noto Sans SC","HarmonyOS Sans","Source Han Sans SC","PingFang SC","Microsoft YaHei",-apple-system,sans-serif;
  font-size:17px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-radius:var(--radius-img);}
a{color:var(--ink);text-decoration:none;transition:color .24s var(--ease);}
a:hover{color:var(--accent);}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
button{font-family:inherit;border:0;background:none;cursor:pointer;}
input{font-family:inherit;}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px;}

/* Foundation 覆盖 */
.grid-container{max-width:1240px;padding-left:24px;padding-right:24px;}
.grid-container.full{padding-left:0;padding-right:0;}
a.button,button.button,.button{
  background:var(--ink);color:#fff;border-radius:var(--radius-btn);
}
.accordion{border:0;background:transparent;}
.accordion-title{border:0;border-top:1px solid var(--line);padding:22px 40px 22px 0;}
.accordion-content{border:0;background:transparent;padding-left:0;padding-right:0;color:var(--ink-2);}
.accordion-item:last-child .accordion-content{border-bottom:0;}

/* 通用排版 */
.container-narrow{max-width:720px;margin:0 auto;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12.5px;letter-spacing:.14em;text-transform:uppercase;
  color:var(--muted);font-weight:600;
}
.eyebrow .dot{width:6px;height:6px;border-radius:50%;background:var(--accent);}
.section{padding:var(--space-section) 0;}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:40px;flex-wrap:wrap;}
.section-head .line{flex:1;height:1px;background:var(--line);min-width:60px;margin-bottom:12px;}
h2.section-title{
  font-size:clamp(1.4rem,2.2vw,2rem);
  font-weight:700;letter-spacing:-.02em;line-height:1.25;
}
.section-desc{margin-top:12px;color:var(--muted);font-size:15px;max-width:640px;}
.muted{color:var(--muted);}
.text-link{color:var(--accent);border-bottom:1px solid var(--accent);padding-bottom:1px;font-size:14.5px;font-weight:600;}
.text-link:hover{color:var(--accent);border-bottom-width:2px;}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;line-height:1;letter-spacing:.01em;
  transition:background .24s var(--ease),color .24s var(--ease),transform .24s var(--ease),border-color .24s var(--ease);
}
.btn-primary{background:var(--ink);color:#fff;}
.btn-primary:hover{background:var(--accent);color:#fff;transform:translateY(-1px);}
.btn-ghost{background:transparent;color:var(--ink);border:1px solid var(--ink);}
.btn-ghost:hover{background:var(--ink);color:#fff;}
.btn-sm{height:40px;padding:0 18px;font-size:14px;}
.btn-block{width:100%;}

/* 标签 */
.tag{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12px;font-weight:600;letter-spacing:.04em;
  padding:3px 10px;border-radius:999px;border:1px solid var(--line-strong);color:var(--ink-2);
  background:rgba(255,255,255,.6);
}
.tag-solid{background:var(--signal);border-color:var(--signal);color:var(--ink);}

/* 头部导航 */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(247,245,241,0);
  border-bottom:1px solid transparent;
  transition:background .24s var(--ease),border-color .24s var(--ease),backdrop-filter .24s var(--ease);
}
.site-header.is-scrolled{
  background:rgba(247,245,241,.92);
  backdrop-filter:blur(10px);
  border-bottom-color:var(--line);
}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;min-height:78px;}
.brand{
  display:inline-flex;align-items:center;gap:9px;
  font-size:19px;font-weight:700;letter-spacing:-.02em;color:var(--ink);white-space:nowrap;
}
.brand:hover{color:var(--ink);}
.brand-dot{width:6px;height:6px;border-radius:50%;background:var(--accent);display:inline-block;flex:none;}
.main-nav{display:flex;align-items:center;gap:28px;}
.nav-link{
  position:relative;font-size:14.5px;color:var(--ink-2);padding:8px 0;white-space:nowrap;
}
.nav-link::after{
  content:"";position:absolute;left:0;bottom:0;width:100%;height:2px;background:var(--accent);
  transform:scaleX(0);transform-origin:left;opacity:0;
  transition:transform .24s var(--ease),opacity .24s var(--ease);
}
.nav-link:hover::after{transform:scaleX(1);opacity:.6;}
.nav-link:hover{color:var(--ink);}
.nav-link.is-active{color:var(--ink);font-weight:600;}
.nav-link.is-active::after{transform:scaleX(1);opacity:1;}
.header-actions{display:flex;align-items:center;gap:14px;}
.icon-btn{
  width:40px;height:40px;display:inline-flex;align-items:center;justify-content:center;
  color:var(--ink-2);border-radius:50%;transition:color .24s var(--ease),background .24s var(--ease);
}
.icon-btn:hover{color:var(--ink);background:rgba(14,15,18,.05);}
.menu-toggle{display:none;width:40px;height:40px;flex-direction:column;justify-content:center;gap:6px;align-items:flex-end;}
.menu-toggle span{display:block;width:22px;height:1px;background:var(--ink);transition:transform .24s var(--ease),opacity .24s var(--ease);}
.menu-toggle.is-open span:first-child{transform:translateY(3.5px) rotate(45deg);}
.menu-toggle.is-open span:last-child{transform:translateY(-3.5px) rotate(-45deg);}
.nav-drawer{
  position:fixed;inset:78px 0 0 0;background:var(--bg-2);z-index:70;
  padding:24px;transform:translateY(-12px);opacity:0;pointer-events:none;
  transition:opacity .24s var(--ease),transform .24s var(--ease);
  overflow-y:auto;
}
.nav-drawer.is-open{opacity:1;transform:translateY(0);pointer-events:auto;}
.nav-drawer a{
  display:block;padding:16px 14px;font-size:16px;border-bottom:1px solid var(--line);color:var(--ink-2);
}
.nav-drawer a.is-active{color:var(--ink);font-weight:600;border-left:3px solid var(--accent);}
.nav-drawer .drawer-cta{margin-top:24px;}

/* 面包屑 */
.breadcrumb{padding:20px 0 0;font-size:13px;color:var(--muted);display:flex;gap:8px;flex-wrap:wrap;}
.breadcrumb a{color:var(--muted);}
.breadcrumb a:hover{color:var(--accent);}
.breadcrumb .sep{color:rgba(14,15,18,.25);}
.breadcrumb .current{color:var(--ink-2);}

/* Hero */
.page-hero{padding:56px 0 72px;border-bottom:1px solid var(--line);}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center;}
.hero-title{
  font-size:clamp(2rem,3.6vw,3.2rem);line-height:1.14;letter-spacing:-.03em;font-weight:700;margin-top:18px;
}
.hero-title em{font-style:normal;color:var(--accent);}
.hero-sub{margin-top:20px;font-size:17px;color:var(--ink-2);max-width:560px;}
.hero-actions{display:flex;gap:14px;margin-top:32px;flex-wrap:wrap;}
.hero-facts{display:flex;gap:18px;margin-top:34px;flex-wrap:wrap;align-items:center;}
.hero-facts span{font-size:13.5px;color:var(--muted);display:inline-flex;align-items:center;gap:8px;}
.hero-facts span + span::before{content:"";width:1px;height:12px;background:var(--line-strong);display:inline-block;}
.hero-media{position:relative;}
.hero-media img{border-radius:var(--radius-card);border:1px solid var(--line);box-shadow:var(--shadow-1);}
.hero-media .frame{border-radius:var(--radius-card);overflow:hidden;aspect-ratio:4/3;}
.hero-media .frame img{width:100%;height:100%;object-fit:cover;border:0;border-radius:0;}
.hero-badge{
  position:absolute;left:-16px;bottom:-18px;background:var(--bg-2);border:1px solid var(--line);
  border-radius:var(--radius-card);padding:14px 18px;box-shadow:var(--shadow-1);max-width:220px;
}
.hero-badge strong{display:block;font-size:22px;font-weight:700;letter-spacing:-.02em;}
.hero-badge span{font-size:12.5px;color:var(--muted);}

/* 数据条 */
.stats{border-bottom:1px solid var(--line);}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);}
.stat{padding:36px 24px;border-left:1px solid var(--line);}
.stat:first-child{border-left:0;padding-left:0;}
.stat .num{font-size:clamp(1.9rem,3vw,2.6rem);font-weight:700;letter-spacing:-.03em;line-height:1.1;}
.stat .num i{font-style:normal;font-size:.55em;color:var(--accent);margin-left:2px;}
.stat .label{margin-top:6px;font-size:13.5px;color:var(--muted);}

/* 图卡墙 */
.card-wall{display:grid;grid-template-columns:repeat(2,1fr);gap:34px 30px;}
.wall-card{
  background:var(--bg-2);border:1px solid var(--line);border-radius:var(--radius-card);
  overflow:hidden;display:flex;flex-direction:column;
  transition:transform .32s var(--ease),box-shadow .32s var(--ease),border-color .32s var(--ease);
}
.wall-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:var(--line-strong);}
.wall-card .thumb{position:relative;aspect-ratio:4/3;overflow:hidden;}
.wall-card .thumb img{width:100%;height:100%;object-fit:cover;border-radius:0;transition:transform .48s var(--ease);}
.wall-card:hover .thumb img{transform:scale(1.04);}
.wall-card .thumb .tag{position:absolute;left:14px;top:14px;background:rgba(255,255,255,.92);}
.wall-card .thumb .corner{
  position:absolute;right:14px;top:14px;background:var(--signal);color:var(--ink);
  font-size:12px;font-weight:600;border-radius:999px;padding:3px 10px;
}
.wall-card .body{padding:22px 22px 24px;}
.wall-card h3{font-size:1.125rem;font-weight:700;letter-spacing:-.01em;line-height:1.4;}
.wall-card p{margin-top:10px;font-size:14.5px;color:var(--muted);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.wall-card .meta{margin-top:16px;padding-top:14px;border-top:1px solid var(--line);display:flex;justify-content:space-between;align-items:center;font-size:13px;color:var(--muted);}
.wall-card .meta i{color:var(--accent);transition:transform .24s var(--ease);}
.wall-card:hover .meta i{transform:translateX(4px);}

/* 步骤流程 */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:0;border-top:1px solid var(--line);}
.step{padding:32px 24px 8px 0;border-right:1px solid var(--line);}
.step:last-child{border-right:0;padding-right:0;}
.step .no{font-size:13px;font-weight:700;letter-spacing:.14em;color:var(--accent);}
.step h3{margin-top:14px;font-size:17px;font-weight:700;}
.step p{margin-top:10px;font-size:14.5px;color:var(--muted);}

/* 口碑条 */
.voice-scroll{display:flex;gap:20px;overflow-x:auto;padding-bottom:12px;scroll-snap-type:x mandatory;-webkit-overflow-scrolling:touch;}
.voice-scroll::-webkit-scrollbar{height:4px;}
.voice-scroll::-webkit-scrollbar-thumb{background:rgba(14,15,18,.18);border-radius:2px;}
.voice{
  flex:0 0 320px;max-width:320px;scroll-snap-align:start;
  background:var(--bg-2);border:1px solid var(--line);border-radius:var(--radius-card);padding:24px;
}
.voice p{font-size:15px;color:var(--ink-2);}
.voice .who{margin-top:18px;padding-top:16px;border-top:1px solid var(--line);font-size:13.5px;color:var(--muted);display:flex;justify-content:space-between;align-items:center;}
.dots{display:inline-flex;gap:4px;}
.dots i{width:6px;height:6px;border-radius:50%;background:var(--accent);display:inline-block;opacity:.25;}
.dots i.on{opacity:1;}

/* FAQ */
.faq-wrap{border-top:1px solid var(--line);}
.faq-wrap .accordion-title{
  font-size:16.5px;font-weight:600;color:var(--ink);position:relative;line-height:1.6;
}
.faq-wrap .accordion-title::after{
  content:"+";position:absolute;right:8px;top:50%;transform:translateY(-50%);
  font-size:22px;font-weight:400;color:var(--muted);transition:transform .24s var(--ease),color .24s var(--ease);
}
.faq-wrap .accordion-item.is-active .accordion-title::after{transform:translateY(-50%) rotate(45deg);color:var(--accent);}
.faq-wrap .accordion-content{font-size:15.5px;line-height:1.85;color:var(--muted);padding-bottom:24px;}

/* CTA */
.cta-band{background:#121316;color:#fff;border-radius:var(--radius-card);padding:56px 48px;}
.cta-band .grid-inner{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:center;}
.cta-band h2{font-size:clamp(1.6rem,2.6vw,2.2rem);font-weight:700;letter-spacing:-.02em;line-height:1.25;}
.cta-band p{margin-top:14px;color:rgba(255,255,255,.68);font-size:15px;max-width:420px;}
.cta-form{display:flex;gap:12px;}
.cta-form input{
  flex:1;height:48px;padding:0 16px;border-radius:var(--radius-btn);
  background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.22);color:#fff;font-size:15px;
  transition:border-color .24s var(--ease),background .24s var(--ease);
}
.cta-form input::placeholder{color:rgba(255,255,255,.42);}
.cta-form input:focus{outline:none;border-color:var(--accent);background:rgba(255,255,255,.1);}
.cta-form .btn-primary{background:#fff;color:var(--ink);}
.cta-form .btn-primary:hover{background:var(--accent);color:#fff;}
.form-note{margin-top:12px;font-size:13px;color:rgba(255,255,255,.5);}
.form-note.ok{color:var(--signal);}

/* 页脚 */
.site-footer{border-top:1px solid var(--line);margin-top:var(--space-section);padding:64px 0 32px;background:var(--bg);}
.footer-brand .brand{margin-bottom:16px;}
.footer-brand p{font-size:14.5px;color:var(--muted);max-width:320px;}
.social{display:flex;gap:14px;margin-top:20px;}
.social a{width:36px;height:36px;display:inline-flex;align-items:center;justify-content:center;border:1px solid var(--line);border-radius:50%;color:var(--ink-2);font-size:14px;}
.social a:hover{border-color:var(--accent);color:var(--accent);}
.footer-col h4{font-size:14px;font-weight:700;letter-spacing:.02em;margin-bottom:16px;}
.footer-col ul li{line-height:2.2;}
.footer-col a{font-size:14.5px;color:var(--muted);display:inline-block;transition:color .2s var(--ease),transform .2s var(--ease);}
.footer-col a:hover{color:var(--accent);transform:translateX(2px);}
.footer-bottom{
  margin-top:48px;padding-top:22px;border-top:1px solid var(--line);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:var(--muted);
}
.footer-bottom a{color:var(--muted);}
.footer-bottom a:hover{color:var(--accent);}

/* 入场动效 */
.fade-up{opacity:0;transform:translateY(12px);transition:opacity .48s var(--ease),transform .48s var(--ease);}
.fade-up.is-in{opacity:1;transform:none;}

@media (prefers-reduced-motion: reduce){
  *{animation:none !important;transition:none !important;}
  .fade-up{opacity:1;transform:none;}
}

/* 响应式 */
@media (max-width:1279px){
  :root{--space-section:96px;}
}
@media (max-width:1023px){
  :root{--space-section:80px;}
  .main-nav{display:none;}
  .header-actions .btn-sm{display:none;}
  .menu-toggle{display:flex;}
  .hero-grid{grid-template-columns:1fr;gap:40px;}
  .stats-grid{grid-template-columns:repeat(2,1fr);}
  .stat{border-left:1px solid var(--line);padding-left:24px;}
  .stat:nth-child(odd){border-left:0;}
  .stat:nth-child(3),.stat:nth-child(4){border-top:1px solid var(--line);}
  .steps{grid-template-columns:repeat(2,1fr);}
  .step{border-right:1px solid var(--line);}
  .step:nth-child(2n){border-right:0;}
  .step:nth-child(3),.step:nth-child(4){border-top:1px solid var(--line);}
  .cta-band .grid-inner{grid-template-columns:1fr;}
  .cta-band{padding:44px 32px;}
}
@media (max-width:767px){
  :root{--space-section:64px;}
  body{font-size:16.5px;}
  .grid-container{padding-left:20px;padding-right:20px;}
  .header-inner{min-height:68px;}
  .nav-drawer{inset:68px 0 0 0;}
  .brand{font-size:17px;}
  .page-hero{padding:36px 0 56px;}
  .card-wall{grid-template-columns:1fr;gap:26px;}
  .stats-grid{grid-template-columns:1fr 1fr;}
  .stat{padding:26px 18px;}
  .steps{grid-template-columns:1fr;}
  .step{border-right:0;border-top:1px solid var(--line);padding:26px 0 6px;}
  .step:first-child{border-top:0;padding-top:0;}
  .hero-badge{position:static;margin-top:18px;max-width:none;}
  .cta-band{padding:36px 22px;}
  .cta-form{flex-direction:column;}
  .cta-form .btn{width:100%;}
  .voice{flex:0 0 280px;max-width:280px;}
  .footer-bottom{flex-direction:column;gap:8px;}
}
@media (max-width:519px){
  .stats-grid{grid-template-columns:1fr;}
  .stat{border-left:0;border-top:1px solid var(--line);padding-left:0;}
  .stat:first-child{border-top:0;padding-top:0;}
  .hero-title{letter-spacing:-.02em;}
  .section-head{margin-bottom:28px;}
}

/* roulang page: category2 */
:root{
  --bg:#F7F5F1;
  --bg-2:#FFFFFF;
  --sand:#EDE9E2;
  --ink:#0E0F12;
  --ink-2:#2A2C31;
  --muted:#6E6A63;
  --accent:#E8552F;
  --signal:#C9F24D;
  --line:rgba(14,15,18,.10);
  --line-strong:rgba(14,15,18,.18);
  --danger:#B3331F;
  --r-card:6px;
  --r-img:4px;
  --r-btn:2px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(14,15,18,.05);
  --sh-2:0 18px 44px -20px rgba(14,15,18,.22);
  --container:1240px;
  --gutter:24px;
  --ease:cubic-bezier(.22,.61,.36,1);
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink-2);
  font-family:"Noto Sans SC","HarmonyOS Sans","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:17px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border-radius:var(--r-img);}
a{color:var(--ink);text-decoration:none;transition:color .24s var(--ease),border-color .24s var(--ease);}
a:hover,a:focus{color:var(--accent);}
button,input{font-family:inherit;font-size:inherit;}
h1,h2,h3,h4{margin:0;color:var(--ink);font-weight:700;letter-spacing:-.02em;line-height:1.2;}
p{margin:0 0 1.1em;}
ul,ol{margin:0;padding:0;list-style:none;}
figure{margin:0;}
::selection{background:var(--signal);color:var(--ink);}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px;}
.grid-container{max-width:var(--container);margin:0 auto;padding-left:var(--gutter);padding-right:var(--gutter);}
.grid-container.full{max-width:100%;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;letter-spacing:.01em;
  border:1px solid transparent;cursor:pointer;
  transition:background .24s var(--ease),color .24s var(--ease),transform .24s var(--ease),border-color .24s var(--ease);
  text-decoration:none;white-space:nowrap;
}
.btn-primary{background:var(--ink);color:#fff;}
.btn-primary:hover,.btn-primary:focus{background:var(--accent);color:#fff;transform:translateY(-1px);}
.btn-ghost{background:transparent;color:var(--ink);border-color:var(--line-strong);}
.btn-ghost:hover,.btn-ghost:focus{background:var(--ink);color:#fff;border-color:var(--ink);}
.btn-sm{height:38px;padding:0 16px;font-size:14px;}
.btn-block{width:100%;}
.text-link{
  display:inline-flex;align-items:center;gap:6px;
  color:var(--accent);font-weight:600;font-size:15px;
  border-bottom:1px solid var(--accent);padding-bottom:2px;
}
.text-link:hover{color:var(--ink);border-bottom-color:var(--ink);}
.text-link i{font-size:12px;transition:transform .24s var(--ease);}
.text-link:hover i{transform:translateX(4px);}

/* ---------- 标签 ---------- */
.pill{
  display:inline-flex;align-items:center;
  padding:4px 12px;border-radius:var(--r-pill);
  font-size:12px;letter-spacing:.06em;font-weight:600;
  border:1px solid var(--line-strong);color:var(--ink-2);background:transparent;
}
.pill-signal{background:var(--signal);border-color:var(--signal);color:var(--ink);}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;letter-spacing:.16em;font-weight:600;color:var(--muted);
  text-transform:uppercase;margin-bottom:18px;
}
.eyebrow .dot{width:6px;height:6px;border-radius:50%;background:var(--accent);display:inline-block;}

/* ---------- Header ---------- */
.site-header{
  position:sticky;top:0;z-index:120;
  background:rgba(247,245,241,0);
  border-bottom:1px solid transparent;
  transition:background .24s var(--ease),border-color .24s var(--ease);
}
.site-header.is-scrolled{
  background:rgba(247,245,241,.92);
  -webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);
  border-bottom-color:var(--line);
}
.header-inner{
  display:flex;align-items:center;justify-content:space-between;gap:24px;
  height:74px;max-width:var(--container);
}
.brand{
  display:inline-flex;align-items:center;gap:9px;
  font-size:18px;font-weight:700;letter-spacing:-.02em;color:var(--ink);
  flex-shrink:0;
}
.brand:hover{color:var(--ink);}
.brand-dot{width:6px;height:6px;border-radius:50%;background:var(--accent);display:inline-block;flex-shrink:0;}
.main-nav{display:flex;align-items:center;}
.main-nav .nav-link{
  position:relative;display:inline-block;
  padding:8px 0;margin-left:28px;
  font-size:15px;color:var(--ink-2);
}
.main-nav .nav-link:first-child{margin-left:0;}
.main-nav .nav-link + .nav-link::before{
  content:"";position:absolute;left:-14px;top:50%;transform:translateY(-50%);
  width:1px;height:12px;background:var(--line-strong);
}
.main-nav .nav-link::after{
  content:"";position:absolute;left:0;bottom:2px;height:2px;width:0;
  background:var(--accent);transition:width .24s var(--ease),opacity .24s var(--ease);
}
.main-nav .nav-link:hover{color:var(--ink);}
.main-nav .nav-link:hover::after{width:100%;opacity:.6;}
.main-nav .nav-link.is-active{color:var(--ink);font-weight:600;}
.main-nav .nav-link.is-active::after{width:100%;opacity:1;}
.header-actions{display:flex;align-items:center;gap:14px;}
.icon-btn{
  width:38px;height:38px;display:inline-flex;align-items:center;justify-content:center;
  background:transparent;border:1px solid var(--line-strong);border-radius:var(--r-btn);
  color:var(--ink);cursor:pointer;transition:background .24s var(--ease),color .24s var(--ease),border-color .24s var(--ease);
}
.icon-btn:hover{background:var(--ink);color:#fff;border-color:var(--ink);}
.menu-toggle{
  display:none;width:38px;height:38px;background:transparent;border:1px solid var(--line-strong);
  border-radius:var(--r-btn);cursor:pointer;flex-direction:column;align-items:center;justify-content:center;gap:5px;
}
.menu-toggle span{display:block;width:16px;height:1px;background:var(--ink);transition:transform .24s var(--ease),opacity .24s var(--ease);}
.menu-toggle[aria-expanded="true"] span:first-child{transform:translateY(3px) rotate(45deg);}
.menu-toggle[aria-expanded="true"] span:last-child{transform:translateY(-3px) rotate(-45deg);}

/* ---------- 移动抽屉 ---------- */
.mobile-drawer{
  position:fixed;inset:74px 0 0 0;z-index:110;
  background:var(--bg-2);
  transform:translateY(-12px);opacity:0;pointer-events:none;
  transition:opacity .24s var(--ease),transform .24s var(--ease);
  padding:24px;overflow-y:auto;
}
.mobile-drawer.is-open{opacity:1;transform:translateY(0);pointer-events:auto;}
.mobile-drawer .drawer-link{
  display:block;padding:16px 14px;font-size:17px;font-weight:600;color:var(--ink);
  border-bottom:1px solid var(--line);
}
.mobile-drawer .drawer-link.is-active{border-left:3px solid var(--accent);padding-left:11px;color:var(--accent);}
.mobile-drawer .btn{margin-top:22px;}

/* ---------- 页首 ---------- */
.page-head{padding:72px 0 48px;border-bottom:1px solid var(--line);}
.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13px;color:var(--muted);margin-bottom:26px;
}
.breadcrumb a{color:var(--muted);}
.breadcrumb a:hover{color:var(--accent);}
.breadcrumb .sep{color:var(--line-strong);}
.breadcrumb .current{color:var(--ink-2);}
.page-head h1{
  font-size:clamp(2rem,3.6vw,3.2rem);
  line-height:1.1;letter-spacing:-.03em;max-width:18em;
}
.page-head .lede{
  margin-top:20px;font-size:18px;color:var(--ink-2);max-width:44em;line-height:1.75;
}
.trust-row{
  display:flex;flex-wrap:wrap;align-items:center;gap:0;margin-top:30px;
}
.trust-row span{
  position:relative;padding:0 18px;font-size:14px;color:var(--muted);
}
.trust-row span:first-child{padding-left:0;}
.trust-row span + span::before{
  content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);
  width:1px;height:12px;background:var(--line-strong);
}

/* ---------- 数据条 ---------- */
.stat-bar{border-bottom:1px solid var(--line);background:var(--bg-2);}
.stat-grid{display:grid;grid-template-columns:repeat(4,1fr);}
.stat-cell{
  padding:32px 26px;border-left:1px solid var(--line);
}
.stat-cell:first-child{border-left:none;}
.stat-num{
  font-family:"Archivo","Inter",system-ui,sans-serif;
  font-size:clamp(1.9rem,3vw,2.6rem);font-weight:700;letter-spacing:-.03em;color:var(--ink);
  line-height:1;display:block;
}
.stat-num small{font-size:.5em;font-weight:600;color:var(--accent);margin-left:2px;}
.stat-label{display:block;margin-top:10px;font-size:13px;color:var(--muted);letter-spacing:.04em;}

/* ---------- 主体两栏 ---------- */
.listing{padding:72px 0 0;}
.sidebar-inner{position:sticky;top:104px;}
.toc-title{
  font-size:13px;letter-spacing:.16em;color:var(--muted);font-weight:600;
  text-transform:uppercase;margin-bottom:18px;
}
.toc-list li{border-bottom:1px solid var(--line);}
.toc-link{
  display:block;padding:13px 0 13px 0;font-size:15px;color:var(--ink-2);
  position:relative;transition:padding-left .24s var(--ease),color .24s var(--ease);
}
.toc-link::after{
  content:"";position:absolute;left:0;bottom:-1px;height:2px;width:0;
  background:var(--accent);transition:width .24s var(--ease);
}
.toc-link:hover{padding-left:6px;}
.toc-link.is-active{color:var(--ink);font-weight:600;}
.toc-link.is-active::after{width:100%;}
.toc-note{
  margin-top:26px;padding:16px 18px;background:var(--sand);border-radius:var(--r-card);
  font-size:13px;color:var(--muted);line-height:1.7;
}
.toc-note p{margin:0;}

.section-head{
  display:flex;align-items:flex-end;justify-content:space-between;gap:24px;
  margin-bottom:8px;
}
.section-head h2{font-size:clamp(1.4rem,2.2vw,2rem);}
.section-head .rule{flex:1;height:1px;background:var(--line);margin-bottom:10px;}
.section-sub{margin:14px 0 36px;color:var(--muted);font-size:15px;max-width:42em;}

.entry{
  background:var(--bg-2);border:1px solid var(--line);border-radius:var(--r-card);
  padding:28px;margin-bottom:22px;box-shadow:var(--sh-1);
  transition:box-shadow .32s var(--ease),transform .32s var(--ease);
}
.entry:hover{box-shadow:var(--sh-2);transform:translateY(-4px);}
.entry-head{display:flex;gap:18px;align-items:flex-start;margin-bottom:20px;}
.entry-num{
  font-family:"Archivo","Inter",system-ui,sans-serif;
  font-size:34px;font-weight:700;line-height:1;letter-spacing:-.04em;
  color:transparent;-webkit-text-stroke:1px var(--line-strong);
  flex-shrink:0;padding-top:2px;
}
.entry-head h3{font-size:19px;line-height:1.35;}
.entry-meta{margin:8px 0 0;font-size:13px;color:var(--muted);letter-spacing:.02em;}
.entry-body{display:grid;grid-template-columns:200px 1fr;gap:24px;align-items:start;}
.entry-figure{overflow:hidden;border-radius:var(--r-img);position:relative;}
.entry-figure img{width:100%;height:100%;object-fit:cover;aspect-ratio:4/3;transition:transform .4s var(--ease);}
.entry:hover .entry-figure img{transform:scale(1.04);}
.entry-text p{font-size:16px;color:var(--ink-2);line-height:1.85;}
.entry-text p:last-of-type{margin-bottom:0;}
.point-list{margin-top:18px;border-top:1px solid var(--line);padding-top:16px;}
.point-list li{
  position:relative;padding-left:18px;font-size:14px;color:var(--ink-2);line-height:1.8;margin-bottom:6px;
}
.point-list li:last-child{margin-bottom:0;}
.point-list li::before{
  content:"";position:absolute;left:0;top:.72em;width:6px;height:6px;border-radius:50%;background:var(--accent);
}

.conclusion{
  margin-top:34px;padding:28px 30px;background:var(--sand);border-radius:var(--r-card);
  border-left:2px solid var(--accent);
}
.conclusion h3{font-size:17px;margin-bottom:12px;}
.conclusion p{font-size:15px;color:var(--ink-2);margin-bottom:18px;}

/* ---------- 口碑 ---------- */
.voices{padding:96px 0 0;}
.voice-scroll{
  display:flex;gap:16px;overflow-x:auto;padding:6px 0 18px;
  scroll-snap-type:x mandatory;-ms-overflow-style:none;scrollbar-width:thin;
}
.voice-scroll::-webkit-scrollbar{height:4px;}
.voice-scroll::-webkit-scrollbar-thumb{background:var(--line-strong);border-radius:2px;}
.voice-card{
  flex:0 0 300px;max-width:300px;scroll-snap-align:start;
  background:var(--bg-2);border:1px solid var(--line);border-radius:var(--r-card);
  padding:22px;box-shadow:var(--sh-1);
}
.voice-card p{font-size:15px;color:var(--ink-2);line-height:1.8;margin-bottom:18px;}
.voice-foot{display:flex;align-items:center;justify-content:space-between;gap:12px;border-top:1px solid var(--line);padding-top:14px;}
.voice-name{font-size:13px;color:var(--muted);}
.voice-score{display:inline-flex;gap:4px;}
.voice-score i{width:6px;height:6px;border-radius:50%;background:var(--line-strong);display:inline-block;}
.voice-score i.on{background:var(--accent);}

/* ---------- CTA ---------- */
.cta-section{margin-top:96px;background:var(--ink);color:#fff;padding:72px 0;}
.cta-grid{display:grid;grid-template-columns:1.1fr 1fr;gap:48px;align-items:center;}
.cta-section h2{color:#fff;font-size:clamp(1.6rem,2.8vw,2.4rem);line-height:1.2;letter-spacing:-.02em;}
.cta-section .cta-desc{color:rgba(255,255,255,.68);font-size:15px;margin:16px 0 0;max-width:30em;line-height:1.8;}
.subscribe-form{display:flex;gap:10px;}
.subscribe-form input{
  flex:1;height:48px;padding:0 16px;background:transparent;color:#fff;
  border:1px solid rgba(255,255,255,.28);border-radius:var(--r-btn);
  transition:border-color .24s var(--ease);
}
.subscribe-form input::placeholder{color:rgba(255,255,255,.45);}
.subscribe-form input:focus{outline:none;border-color:var(--accent);}
.subscribe-form .btn-primary{background:#fff;color:var(--ink);}
.subscribe-form .btn-primary:hover{background:var(--accent);color:#fff;}
.form-tip{margin:12px 0 0;font-size:13px;color:rgba(255,255,255,.5);}
.form-tip.is-error{color:#F3A99A;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--bg-2);border-top:1px solid var(--line);padding:72px 0 32px;margin-top:0;}
.footer-brand .brand{margin-bottom:18px;}
.footer-brand p{font-size:14px;color:var(--muted);max-width:26em;line-height:1.8;margin-bottom:22px;}
.social{display:flex;gap:12px;}
.social a{
  width:36px;height:36px;display:inline-flex;align-items:center;justify-content:center;
  border:1px solid var(--line-strong);border-radius:var(--r-btn);color:var(--ink-2);font-size:14px;
  transition:background .24s var(--ease),color .24s var(--ease),border-color .24s var(--ease);
}
.social a:hover{background:var(--ink);color:#fff;border-color:var(--ink);}
.footer-col h4{font-size:13px;letter-spacing:.14em;color:var(--muted);text-transform:uppercase;margin-bottom:18px;font-weight:600;}
.footer-col ul li{margin-bottom:6px;}
.footer-col ul a{
  display:inline-block;font-size:14px;color:var(--ink-2);line-height:2.2;
  transition:color .24s var(--ease),transform .24s var(--ease);
}
.footer-col ul a:hover{color:var(--accent);transform:translateX(2px);}
.footer-bottom{
  margin-top:56px;padding-top:22px;border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;
  font-size:13px;color:var(--muted);
}
.footer-bottom a{color:var(--muted);border-bottom:1px solid var(--line-strong);}
.footer-bottom a:hover{color:var(--accent);border-bottom-color:var(--accent);}

/* ---------- 入场动效 ---------- */
.reveal-up{opacity:0;transform:translateY(12px);transition:opacity .48s var(--ease),transform .48s var(--ease);}
.reveal-up.is-in{opacity:1;transform:translateY(0);}

/* ---------- 响应式 ---------- */
@media (max-width:1024px){
  .main-nav{display:none;}
  .menu-toggle{display:flex;}
  .header-actions .btn-sm{display:none;}
  .entry-body{grid-template-columns:170px 1fr;gap:20px;}
  .stat-grid{grid-template-columns:repeat(2,1fr);}
  .stat-cell:nth-child(3){border-left:none;}
  .stat-cell:nth-child(n+3){border-top:1px solid var(--line);}
  .cta-grid{grid-template-columns:1fr;gap:32px;}
}
@media (max-width:768px){
  :root{--gutter:20px;}
  body{font-size:16px;}
  .page-head{padding:56px 0 40px;}
  .listing{padding:56px 0 0;}
  .sidebar-inner{position:static;margin-bottom:40px;}
  .toc-list{display:grid;grid-template-columns:1fr 1fr;gap:0 20px;}
  .entry{padding:22px;}
  .entry-body{grid-template-columns:1fr;}
  .entry-figure img{aspect-ratio:16/9;}
  .voices{padding:64px 0 0;}
  .cta-section{margin-top:64px;padding:56px 0;}
  .voice-card{flex:0 0 260px;max-width:260px;}
}
@media (max-width:520px){
  .stat-grid{grid-template-columns:1fr;}
  .stat-cell{border-left:none;border-top:1px solid var(--line);padding:22px 0;}
  .stat-cell:first-child{border-top:none;}
  .toc-list{grid-template-columns:1fr;}
  .subscribe-form{flex-direction:column;}
  .subscribe-form .btn{width:100%;}
  .trust-row span{padding:0 10px;}
  .entry-head{gap:12px;}
  .entry-num{font-size:26px;}
  .header-inner{height:64px;}
  .mobile-drawer{inset:64px 0 0 0;}
  .footer-bottom{flex-direction:column;}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;scroll-behavior:auto !important;}
  .reveal-up{opacity:1;transform:none;}
}

/* roulang page: category3 */
:root{
  --bg:#F7F5F1;
  --bg-2:#FFFFFF;
  --sand:#EDE9E2;
  --ink:#0E0F12;
  --ink-2:#2A2C31;
  --muted:#6E6A63;
  --line:rgba(14,15,18,.10);
  --line-strong:rgba(14,15,18,.18);
  --accent:#E8552F;
  --signal:#C9F24D;
  --danger:#B3331F;
  --r-card:6px;
  --r-img:4px;
  --r-btn:2px;
  --r-pill:999px;
  --shadow-1:0 1px 2px rgba(14,15,18,.05);
  --shadow-2:0 18px 44px -20px rgba(14,15,18,.22);
  --ease:cubic-bezier(.22,.61,.36,1);
  --font-cn:"HarmonyOS Sans SC","Noto Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
  --font-en:"Archivo","Inter","Helvetica Neue",Arial,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  padding-top:76px;
  background:var(--bg);
  color:var(--ink-2);
  font-family:var(--font-cn);
  font-size:17px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body.nav-open{overflow:hidden}
img{max-width:100%;display:block;border-radius:var(--r-img)}
a{color:var(--ink);text-decoration:none;transition:color .24s var(--ease),opacity .24s var(--ease)}
a:hover{color:var(--accent)}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
input,textarea,select{font:inherit;color:inherit}
ul,ol{margin:0;padding:0}
h1,h2,h3,h4{color:var(--ink);margin:0;font-weight:700;letter-spacing:-.02em;line-height:1.25}
p{margin:0 0 1.1em}
p:last-child{margin-bottom:0}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}

/* Foundation 覆盖 */
.grid-container{max-width:1240px;padding-left:24px;padding-right:24px}
.grid-x{max-width:none}
body,button,input{font-family:var(--font-cn)}
a{color:var(--ink)}
a:hover,a:focus{color:var(--accent)}
.button,.btn{border-radius:var(--r-btn)}
ul.accordion{margin:0;padding:0;list-style:none}

/* 容器与板块 */
.section{padding:96px 0}
.section-tight{padding:64px 0}
.section-sand{background:var(--sand)}
.section-white{background:var(--bg-2)}
.section-head{display:flex;align-items:baseline;gap:24px;margin-bottom:40px}
.section-head h2{font-size:clamp(1.4rem,2.2vw,2rem);white-space:nowrap;letter-spacing:-.03em}
.section-head::after{content:"";flex:1 1 auto;height:1px;background:var(--line)}
.section-head .head-link{font-size:14px;color:var(--accent);white-space:nowrap;border-bottom:1px solid currentColor;line-height:1.4}
.section-lead{max-width:62ch;color:var(--muted);font-size:15.5px;margin:-16px 0 40px}

/* 顶部导航 */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:80;
  background:transparent;
  transition:background .24s var(--ease),border-color .24s var(--ease),box-shadow .24s var(--ease);
  border-bottom:1px solid transparent;
}
.site-header.is-scrolled{
  background:rgba(247,245,241,.92);
  -webkit-backdrop-filter:blur(10px);
  backdrop-filter:blur(10px);
  border-bottom-color:var(--line);
}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;height:76px}
.brand{display:inline-flex;align-items:center;gap:8px;font-family:var(--font-en),var(--font-cn);font-size:1.0625rem;font-weight:700;letter-spacing:-.02em;color:var(--ink);white-space:nowrap}
.brand:hover{color:var(--ink)}
.brand-dot{width:6px;height:6px;border-radius:50%;background:var(--accent);display:inline-block;flex:0 0 auto}
.main-nav{display:flex;align-items:center;flex:1 1 auto;justify-content:center}
.nav-link{
  position:relative;display:inline-block;
  padding:6px 15px;font-size:15px;color:var(--ink-2);line-height:1.5;
  letter-spacing:.01em;
}
.nav-link+.nav-link{border-left:1px solid var(--line)}
.nav-link::after{
  content:"";position:absolute;left:15px;right:15px;bottom:0;height:2px;
  background:var(--accent);transform:scaleX(0);transform-origin:left center;
  transition:transform .24s var(--ease),opacity .24s var(--ease);opacity:1;
}
.nav-link:hover::after{transform:scaleX(1);opacity:.6}
.nav-link.is-active{color:var(--ink);font-weight:600}
.nav-link.is-active::after{transform:scaleX(1);opacity:1}
.header-actions{display:flex;align-items:center;gap:14px}
.icon-btn{
  width:38px;height:38px;border-radius:50%;display:inline-flex;align-items:center;justify-content:center;
  color:var(--ink-2);font-size:14px;transition:color .24s var(--ease),background .24s var(--ease);
}
.icon-btn:hover{color:var(--accent);background:rgba(14,15,18,.04)}
.menu-toggle{display:none;width:40px;height:40px;flex-direction:column;justify-content:center;gap:6px;padding:0 6px}
.menu-toggle span{display:block;height:1px;background:var(--ink);transition:transform .24s var(--ease),opacity .24s var(--ease)}
.menu-toggle[aria-expanded="true"] span:first-child{transform:translateY(3.5px) rotate(45deg)}
.menu-toggle[aria-expanded="true"] span:last-child{transform:translateY(-3.5px) rotate(-45deg)}

/* 移动端抽屉 */
.mobile-drawer{
  position:fixed;inset:76px 0 0 0;z-index:70;background:var(--bg);
  transform:translateX(100%);transition:transform .32s var(--ease);
  padding:24px 20px 40px;overflow-y:auto;display:none;
}
.mobile-drawer.is-open{transform:translateX(0)}
.mobile-drawer a{
  display:block;padding:16px 0 16px 16px;font-size:16px;color:var(--ink-2);
  border-bottom:1px solid var(--line);position:relative;
}
.mobile-drawer a.is-active{color:var(--ink);font-weight:600}
.mobile-drawer a.is-active::before{content:"";position:absolute;left:0;top:14px;bottom:14px;width:3px;background:var(--accent)}
.drawer-cta{margin-top:24px}
.drawer-cta .btn{width:100%;justify-content:center}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;font-size:15px;font-weight:600;line-height:1;
  border-radius:var(--r-btn);border:1px solid transparent;
  transition:background .24s var(--ease),color .24s var(--ease),border-color .24s var(--ease),transform .24s var(--ease),box-shadow .24s var(--ease);
}
.btn-primary{background:var(--ink);color:#fff}
.btn-primary:hover,.btn-primary:focus{background:var(--accent);color:#fff;transform:translateY(-1px)}
.btn-ghost{background:transparent;border-color:var(--ink);color:var(--ink)}
.btn-ghost:hover,.btn-ghost:focus{background:var(--ink);color:#fff}
.btn-accent{background:var(--accent);color:#fff}
.btn-accent:hover,.btn-accent:focus{background:#cf4523;color:#fff;transform:translateY(-1px)}
.btn-sm{height:40px;padding:0 18px;font-size:14px}
.link-plain{color:var(--accent);border-bottom:1px solid currentColor;line-height:1.4}
.link-plain:hover{color:var(--accent);border-bottom-width:2px}

/* 标签 */
.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 12px;font-size:12px;line-height:1.5;letter-spacing:.04em;
  border:1px solid var(--line-strong);border-radius:var(--r-pill);color:var(--muted);
  background:transparent;
}
.tag-signal{background:var(--signal);border-color:transparent;color:var(--ink);font-weight:600}
.tag-accent{border-color:rgba(232,85,47,.4);color:var(--accent)}

/* Hero */
.hero{padding:72px 0 88px;position:relative;overflow:hidden}
.hero::before{
  content:"";position:absolute;top:-140px;right:-180px;width:520px;height:520px;border-radius:50%;
  background:radial-gradient(circle,rgba(232,85,47,.10),rgba(232,85,47,0) 68%);pointer-events:none;
}
.hero-copy{position:relative;z-index:2;padding-right:24px}
.breadcrumb{display:flex;flex-wrap:wrap;gap:8px;align-items:center;font-size:13px;color:var(--muted);margin-bottom:28px}
.breadcrumb a{color:var(--muted)}
.breadcrumb a:hover{color:var(--accent)}
.breadcrumb .sep{color:var(--line-strong)}
.breadcrumb .current{color:var(--ink-2)}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:12px;letter-spacing:.14em;color:var(--muted);text-transform:uppercase;margin-bottom:18px}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--accent);display:inline-block}
.hero h1{font-size:clamp(2rem,3.6vw,3.2rem);line-height:1.12;letter-spacing:-.03em;margin-bottom:20px}
.hero-sub{font-size:17px;color:var(--muted);max-width:34ch;margin-bottom:32px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:32px}
.trust-row{display:flex;flex-wrap:wrap;align-items:center;gap:0;font-size:13px;color:var(--muted);list-style:none}
.trust-row li{padding:0 16px;position:relative}
.trust-row li:first-child{padding-left:0}
.trust-row li+li::before{content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);width:1px;height:12px;background:var(--line-strong)}

.hero-visual{position:relative;min-height:420px;display:flex;align-items:center;justify-content:center}
.portrait-card{
  position:relative;width:min(360px,100%);margin:0;
  aspect-ratio:9/16;border-radius:var(--r-card);overflow:hidden;
  border:1px solid var(--line);background:var(--bg-2);box-shadow:var(--shadow-1);
  transform:rotate(0deg);
}
.portrait-card img{width:100%;height:100%;object-fit:cover;border-radius:0}
.portrait-card figcaption{
  position:absolute;left:0;right:0;bottom:0;padding:22px 20px 20px;
  background:linear-gradient(to top,rgba(14,15,18,.82),rgba(14,15,18,0));
  display:flex;flex-direction:column;gap:6px;align-items:flex-start;
}
.portrait-card figcaption strong{color:#fff;font-size:1.0625rem;font-weight:600}
.portrait-mini{
  position:absolute;width:132px;aspect-ratio:9/16;margin:0;border-radius:var(--r-card);overflow:hidden;
  border:1px solid var(--line);background:var(--bg-2);box-shadow:var(--shadow-2);
}
.portrait-mini img{width:100%;height:100%;object-fit:cover;border-radius:0}
.portrait-mini.p1{left:2%;bottom:8%;transform:rotate(-1.5deg)}
.portrait-mini.p2{right:2%;top:6%;transform:rotate(1.5deg)}

/* 数据条 */
.stats-strip{background:var(--bg-2);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.stats{display:grid;grid-template-columns:repeat(4,1fr)}
.stat{padding:40px 24px;border-left:1px solid var(--line)}
.stat:first-child{border-left:0}
.stat-num{font-family:var(--font-en),var(--font-cn);display:block;font-size:clamp(2rem,3vw,2.6rem);font-weight:700;letter-spacing:-.04em;color:var(--ink);line-height:1.1}
.stat-unit{font-size:14px;color:var(--accent);font-weight:600;margin-left:4px;letter-spacing:0}
.stat-label{display:block;margin-top:8px;font-size:13.5px;color:var(--muted)}

/* 时间轴 */
.timeline{position:relative;margin-top:56px;padding:8px 0}
.timeline::before{
  content:"";position:absolute;top:0;bottom:0;left:50%;width:1px;
  background:var(--line-strong);transform:translateX(-50%);
}
.tl-item{position:relative;display:grid;grid-template-columns:1fr 88px 1fr;align-items:center;margin-bottom:56px}
.tl-item:last-child{margin-bottom:0}
.tl-node{
  grid-column:2;grid-row:1;justify-self:center;align-self:center;
  width:8px;height:8px;border-radius:50%;background:var(--accent);
  box-shadow:0 0 0 6px rgba(232,85,47,.12);
}
.tl-card{
  grid-column:1;grid-row:1;
  background:var(--bg-2);border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--shadow-1);overflow:hidden;
  transition:transform .32s var(--ease),box-shadow .32s var(--ease),border-color .32s var(--ease);
}
.tl-item.is-right .tl-card{grid-column:3}
.tl-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:var(--line-strong)}
.tl-media{overflow:hidden;background:var(--sand)}
.tl-media img{width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:0;transition:transform .32s var(--ease)}
.tl-card:hover .tl-media img{transform:scale(1.04)}
.tl-body{padding:22px 24px 24px}
.tl-time{display:inline-flex;align-items:center;gap:8px;font-family:var(--font-en),var(--font-cn);font-size:12px;letter-spacing:.1em;color:var(--accent);font-weight:600;margin-bottom:10px}
.tl-time::before{content:"";width:14px;height:1px;background:var(--accent);display:inline-block}
.tl-body h3{font-size:1.125rem;margin-bottom:10px}
.tl-body p{font-size:15px;color:var(--muted);margin:0;line-height:1.8}

/* 特点卡 */
.feature-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.feature-card{
  background:var(--bg-2);border:1px solid var(--line);border-radius:var(--r-card);
  padding:26px 24px 28px;display:flex;flex-direction:column;gap:12px;
  transition:transform .32s var(--ease),box-shadow .32s var(--ease),border-color .32s var(--ease);
}
.feature-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:var(--line-strong)}
.feature-card .tag{align-self:flex-start}
.feature-card h3{font-size:1.0625rem}
.feature-card p{font-size:14.5px;color:var(--muted);margin:0;line-height:1.8}

/* 口碑条 */
.quote-scroller{
  display:flex;gap:20px;overflow-x:auto;padding:4px 4px 20px;
  scroll-snap-type:x mandatory;-webkit-overflow-scrolling:touch;
}
.quote-scroller::-webkit-scrollbar{height:6px}
.quote-scroller::-webkit-scrollbar-thumb{background:var(--line-strong);border-radius:3px}
.quote-card{
  flex:0 0 auto;width:min(320px,80vw);scroll-snap-align:start;
  background:var(--bg-2);border:1px solid var(--line);border-radius:var(--r-card);
  padding:24px;display:flex;flex-direction:column;gap:16px;
}
.quote-card p{font-size:15px;color:var(--ink-2);margin:0;line-height:1.8}
.quote-meta{font-size:13px;color:var(--muted)}
.quote-score{display:flex;gap:5px;align-items:center}
.quote-score i{width:7px;height:7px;border-radius:50%;background:var(--accent);display:inline-block}
.quote-score i.off{background:var(--line-strong)}

/* FAQ */
.faq-list .accordion{background:transparent;border:0}
.faq-list .accordion-item{border:0;border-top:1px solid var(--line);background:transparent}
.faq-list .accordion-item:last-child{border-bottom:1px solid var(--line)}
.faq-list .accordion-title{
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:24px 4px;font-size:1.0625rem;font-weight:600;color:var(--ink);
  background:transparent;border:0;line-height:1.5;
}
.faq-list .accordion-title:hover{color:var(--accent)}
.faq-list .accordion-title::before{display:none !important}
.faq-list .accordion-title::after{
  content:"+";font-family:var(--font-en);font-size:1.375rem;font-weight:400;line-height:1;
  color:var(--accent);transition:transform .3s var(--ease);flex:0 0 auto;
}
.faq-list .accordion-item.is-active .accordion-title::after{transform:rotate(45deg)}
.faq-list .accordion-content{
  padding:0 4px 26px;background:transparent;border:0;color:var(--muted);
  font-size:15.5px;line-height:1.85;max-width:70ch;
}

/* CTA */
.cta-section{background:var(--ink);color:#fff;padding:88px 0}
.cta-section h2{color:#fff;font-size:clamp(1.6rem,2.6vw,2.4rem);letter-spacing:-.03em;margin-bottom:12px}
.cta-section .cta-note{color:rgba(255,255,255,.66);font-size:15px;max-width:40ch;margin:0}
.cta-form{display:flex;flex-wrap:wrap;gap:12px;align-items:flex-start}
.cta-form input{
  flex:1 1 260px;height:48px;padding:0 16px;border-radius:var(--r-btn);
  background:transparent;border:1px solid rgba(255,255,255,.28);color:#fff;
  transition:border-color .24s var(--ease);
}
.cta-form input::placeholder{color:rgba(255,255,255,.45)}
.cta-form input:focus{outline:none;border-color:var(--accent)}
.form-note{flex:1 1 100%;font-size:13.5px;color:var(--signal);margin:4px 0 0}
.form-note.is-error{color:#F0A08A}

/* 页脚 */
.site-footer{background:var(--sand);border-top:1px solid var(--line);padding:72px 0 28px}
.footer-brand .brand{margin-bottom:16px;font-size:1.0625rem}
.site-footer p{color:var(--muted);font-size:14px;line-height:1.8;max-width:34ch;margin-bottom:20px}
.social{display:flex;gap:12px}
.social a{
  width:38px;height:38px;border:1px solid var(--line-strong);border-radius:50%;
  display:inline-flex;align-items:center;justify-content:center;font-size:14px;color:var(--ink-2);
  transition:color .24s var(--ease),border-color .24s var(--ease),transform .24s var(--ease);
}
.social a:hover{color:var(--accent);border-color:var(--accent);transform:translateY(-2px)}
.footer-col h4{font-size:13px;letter-spacing:.08em;font-weight:600;color:var(--muted);margin-bottom:16px}
.footer-col ul{list-style:none}
.footer-col li{line-height:2.2}
.footer-col a{display:inline-block;font-size:14.5px;color:var(--ink-2);transition:color .24s var(--ease),transform .24s var(--ease)}
.footer-col a:hover{color:var(--accent);transform:translateX(2px)}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:8px 24px;justify-content:space-between;
  border-top:1px solid var(--line);margin-top:56px;padding-top:22px;
  font-size:13px;color:var(--muted);
}
.footer-bottom a{color:var(--muted)}
.footer-bottom a:hover{color:var(--accent)}

/* 动效 */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .48s var(--ease),transform .48s var(--ease)}
.reveal.is-visible{opacity:1;transform:none}

@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto}
  .reveal{opacity:1;transform:none;transition:none}
  *{animation-duration:.001ms !important;transition-duration:.001ms !important}
}

/* 响应式 */
@media screen and (max-width:1279px){
  .section{padding:88px 0}
}
@media screen and (max-width:1023px){
  .main-nav{display:none}
  .menu-toggle{display:inline-flex}
  .mobile-drawer{display:block}
  .hero{padding:48px 0 72px}
  .hero-copy{padding-right:0;margin-bottom:48px}
  .hero-visual{min-height:auto;justify-content:flex-start}
  .portrait-card{width:min(300px,72%)}
  .portrait-mini{width:100px}
  .portrait-mini.p1{left:auto;right:22%;bottom:2%}
  .portrait-mini.p2{right:6%;top:4%}
  .feature-grid{grid-template-columns:repeat(2,1fr)}
  .timeline::before{left:7px;transform:none}
  .tl-item{grid-template-columns:16px 1fr;gap:0 20px;margin-bottom:36px}
  .tl-node{grid-column:1;grid-row:1;justify-self:start}
  .tl-item .tl-card,.tl-item.is-right .tl-card{grid-column:2;grid-row:1}
  .tl-body{padding:20px}
  .cta-section{padding:64px 0}
}
@media screen and (max-width:767px){
  body{font-size:16px;padding-top:68px}
  .header-inner{height:68px}
  .mobile-drawer{inset:68px 0 0 0}
  .grid-container{padding-left:20px;padding-right:20px}
  .section{padding:64px 0}
  .section-tight{padding:48px 0}
  .section-head{gap:16px;margin-bottom:28px}
  .section-head h2{white-space:normal}
  .hero h1{font-size:clamp(1.75rem,7vw,2.2rem)}
  .hero-sub{max-width:none}
  .stats{grid-template-columns:repeat(2,1fr)}
  .stat{padding:28px 18px;border-left:1px solid var(--line)}
  .stat:nth-child(odd){border-left:0}
  .stat:nth-child(n+3){border-top:1px solid var(--line)}
  .feature-grid{grid-template-columns:1fr}
  .cta-form input{flex:1 1 100%}
  .cta-form .btn{width:100%}
  .footer-bottom{flex-direction:column;gap:6px}
}
@media screen and (max-width:519px){
  .brand{font-size:1rem}
  .header-actions .btn-sm{display:none}
  .portrait-mini{width:84px}
  .portrait-card{width:min(260px,78%)}
  .quote-card{width:86vw}
  .tl-media img{aspect-ratio:4/3}
}

/* roulang page: category4 */
/* ============ 设计变量 ============ */
:root{
  --bg:#F7F5F1;
  --bg-2:#FFFFFF;
  --sand:#EDE9E2;
  --ink:#0E0F12;
  --ink-2:#2A2C31;
  --muted:#6E6A63;
  --accent:#E8552F;
  --signal:#C9F24D;
  --danger:#B3331F;
  --line:rgba(14,15,18,.10);
  --line-2:rgba(14,15,18,.20);
  --r-card:6px;
  --r-img:4px;
  --r-btn:2px;
  --pill:999px;
  --sh-1:0 1px 2px rgba(14,15,18,.05);
  --sh-2:0 18px 44px -20px rgba(14,15,18,.22);
  --ease:cubic-bezier(.22,.61,.36,1);
  --sec-y:96px;
  --maxw:1240px;
}
@media (max-width:1279px){ :root{ --sec-y:96px; } }
@media (max-width:767px){ :root{ --sec-y:64px; } }

/* ============ 基础重置 ============ */
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink-2);
  font-family:"Noto Sans SC","HarmonyOS Sans","PingFang SC","Microsoft YaHei",-apple-system,BlinkMacSystemFont,"Segoe UI",Archivo,Inter,sans-serif;
  font-size:17px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
  overflow-x:hidden;
}
img{max-width:100%;display:block;height:auto;}
a{color:inherit;text-decoration:none;transition:color .22s var(--ease),opacity .22s var(--ease);}
a:hover,a:focus{color:var(--accent);}
button,input{font:inherit;color:inherit;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p,figure{margin:0;}
a:focus-visible,button:focus-visible,input:focus-visible,summary:focus-visible{outline:2px solid var(--accent);outline-offset:3px;}
::selection{background:var(--signal);color:var(--ink);}

/* ============ 容器与版块 ============ */
.grid-container{max-width:var(--maxw);margin-left:auto;margin-right:auto;padding-left:24px;padding-right:24px;}
@media (max-width:520px){ .grid-container{padding-left:20px;padding-right:20px;} }
.section{padding:var(--sec-y) 0 0;}
.section:first-of-type{padding-top:0;}
.section-head{display:flex;align-items:center;gap:24px;margin-bottom:40px;}
.section-head h2{
  font-size:clamp(1.4rem,2.2vw,2rem);
  font-weight:700;letter-spacing:-.02em;color:var(--ink);white-space:nowrap;
}
.section-line{flex:1 1 auto;height:1px;background:var(--line);}
.section-head .text-link{flex:0 0 auto;font-size:14px;}
@media (max-width:767px){
  .section-head{flex-wrap:wrap;gap:16px;margin-bottom:28px;}
  .section-head h2{white-space:normal;}
  .section-line{display:none;}
}

/* ============ 按钮 / 标签 / 链接 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;letter-spacing:.01em;
  border:1px solid transparent;cursor:pointer;
  transition:background-color .24s var(--ease),color .24s var(--ease),border-color .24s var(--ease),transform .24s var(--ease);
}
.btn-primary{background:var(--ink);color:#fff;}
.btn-primary:hover,.btn-primary:focus{background:var(--accent);color:#fff;transform:translateY(-1px);}
.btn-ghost{background:transparent;color:var(--ink);border-color:var(--line-2);}
.btn-ghost:hover,.btn-ghost:focus{background:var(--ink);color:#fff;border-color:var(--ink);transform:translateY(-1px);}
.btn-sm{height:40px;padding:0 18px;font-size:14px;}
.text-link{color:var(--accent);border-bottom:1px solid currentColor;padding-bottom:1px;font-weight:500;}
.text-link:hover{color:var(--accent);border-bottom-width:2px;}
.tag{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;
  border:1px solid var(--line-2);border-radius:var(--pill);
  font-size:12px;letter-spacing:.06em;color:var(--muted);white-space:nowrap;
}
.tag-signal{background:var(--signal);border-color:var(--signal);color:var(--ink);font-weight:600;}

/* ============ 头部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:60;
  background:transparent;
  border-bottom:1px solid transparent;
  transition:background-color .24s var(--ease),border-color .24s var(--ease),box-shadow .24s var(--ease);
}
.site-header.is-scrolled{
  background:rgba(247,245,241,.96);
  border-bottom-color:var(--line);
  box-shadow:0 1px 0 rgba(14,15,18,.02);
}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;height:76px;}
.brand{display:inline-flex;align-items:center;gap:10px;font-weight:700;letter-spacing:-.02em;font-size:1.0625rem;color:var(--ink);}
.brand:hover{color:var(--ink);}
.brand-dot{width:6px;height:6px;border-radius:1px;background:var(--accent);display:inline-block;flex:0 0 auto;}
.main-nav{display:flex;align-items:center;}
.nav-link{
  position:relative;display:inline-block;padding:6px 14px;
  font-size:.9375rem;color:var(--ink-2);letter-spacing:.01em;
}
.nav-link + .nav-link{border-left:1px solid var(--line);}
.nav-link::after{
  content:"";position:absolute;left:14px;right:14px;bottom:0;height:2px;
  background:var(--accent);transform:scaleX(0);transform-origin:left center;
  transition:transform .24s var(--ease),opacity .24s var(--ease);opacity:.6;
}
.nav-link:hover{color:var(--ink);}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.is-active{color:var(--ink);font-weight:600;}
.nav-link.is-active::after{transform:scaleX(1);opacity:1;}
.header-actions{display:flex;align-items:center;gap:16px;}
.icon-btn{
  width:40px;height:40px;display:inline-flex;align-items:center;justify-content:center;
  background:transparent;border:1px solid transparent;border-radius:var(--pill);
  color:var(--ink);cursor:pointer;transition:border-color .22s var(--ease),color .22s var(--ease);
}
.icon-btn:hover{border-color:var(--line-2);color:var(--accent);}
.menu-toggle{display:none;width:44px;height:44px;background:transparent;border:0;position:relative;cursor:pointer;}
.menu-toggle span{position:absolute;left:11px;right:11px;height:1px;background:var(--ink);top:50%;transition:transform .24s var(--ease);}
.menu-toggle span:nth-child(1){transform:translateY(-4px);}
.menu-toggle span:nth-child(2){transform:translateY(4px);}
.menu-toggle.is-open span:nth-child(1){transform:rotate(45deg);}
.menu-toggle.is-open span:nth-child(2){transform:rotate(-45deg);}
@media (max-width:1023px){
  .main-nav{display:none;}
  .menu-toggle{display:block;}
  .header-actions .btn{display:none;}
  .header-inner{height:66px;}
}
.mobile-drawer{
  position:fixed;inset:0;z-index:70;display:none;
  background:var(--bg);padding:96px 24px 40px;overflow-y:auto;
}
.mobile-drawer.is-open{display:block;}
.drawer-nav{display:flex;flex-direction:column;}
.drawer-link{
  display:block;padding:18px 0;font-size:1.0625rem;font-weight:600;color:var(--ink);
  border-bottom:1px solid var(--line);
}
.drawer-link.is-active{color:var(--accent);border-left:3px solid var(--accent);padding-left:14px;}
.drawer-note{margin-top:32px;font-size:13px;color:var(--muted);line-height:1.9;}

/* ============ 面包屑与首屏 ============ */
.page-hero{padding:64px 0 56px;}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--muted);letter-spacing:.02em;margin-bottom:30px;}
.breadcrumb a{color:var(--muted);}
.breadcrumb a:hover{color:var(--accent);}
.breadcrumb .sep{opacity:.5;}
.breadcrumb .current{color:var(--ink-2);}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;letter-spacing:.08em;color:var(--muted);}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:1px;background:var(--accent);}
.page-title{
  margin:18px 0 20px;max-width:900px;
  font-size:clamp(2rem,3.6vw,3.2rem);line-height:1.16;letter-spacing:-.03em;
  font-weight:700;color:var(--ink);
}
.hero-sub{max-width:640px;font-size:1.0625rem;line-height:1.8;color:var(--ink-2);}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-top:34px;}
.hero-meta{display:flex;flex-wrap:wrap;margin-top:38px;padding-top:20px;border-top:1px solid var(--line);}
.hero-meta li{font-size:13.5px;color:var(--muted);padding:0 20px;border-right:1px solid var(--line);}
.hero-meta li:first-child{padding-left:0;}
.hero-meta li:last-child{border-right:0;padding-right:0;}
@media (max-width:767px){
  .page-hero{padding:40px 0 36px;}
  .hero-meta{flex-direction:column;gap:8px;}
  .hero-meta li{border-right:0;padding:0;}
}

/* ============ 大图 + 要点 ============ */
.visual-figure{
  position:relative;border:1px solid var(--line);border-radius:var(--r-img);overflow:hidden;background:var(--sand);
}
.visual-figure img{width:100%;aspect-ratio:16/7;object-fit:cover;}
.visual-figure figcaption{
  position:absolute;left:0;right:0;bottom:0;padding:32px 28px 24px;color:#fff;font-size:14px;line-height:1.7;
  background:linear-gradient(to top,rgba(14,15,18,.74),rgba(14,15,18,0));
}
@media (max-width:767px){ .visual-figure img{aspect-ratio:4/3;} }

.points{margin-top:56px;}
.point{padding-top:26px;border-top:1px solid var(--line);}
.point-num{
  display:block;font-size:2.4rem;font-weight:700;letter-spacing:-.03em;line-height:1;
  color:var(--ink-2);margin-bottom:18px;
}
@supports (-webkit-text-stroke:1px #000){
  .point-num{color:transparent;-webkit-text-stroke:1px rgba(14,15,18,.55);}
}
.point h3{font-size:1.125rem;font-weight:700;color:var(--ink);margin-bottom:10px;letter-spacing:-.01em;}
.point p{font-size:15.5px;line-height:1.8;color:var(--muted);}

/* ============ 玩法对照 ============ */
.compare-grid{border-bottom:1px solid var(--line);}
.compare-cell{padding:30px 26px 34px;border-top:1px solid var(--line);}
.compare-cell:nth-child(odd){padding-left:0;}
.compare-cell:nth-child(even){border-left:1px solid var(--line);}
.compare-cell h3{margin:16px 0 10px;font-size:1.125rem;font-weight:700;color:var(--ink);letter-spacing:-.01em;}
.compare-cell p{font-size:15.5px;line-height:1.8;color:var(--muted);}
.compare-cell .cell-icon{font-size:16px;color:var(--accent);}
@media (max-width:767px){
  .compare-cell{padding-left:0;padding-right:0;border-left:0;}
}

/* ============ 准备清单卡片 ============ */
.prep-card{
  height:100%;padding:26px 24px 28px;background:var(--bg-2);
  border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh-1);
  transition:transform .32s var(--ease),box-shadow .32s var(--ease),border-color .32s var(--ease);
}
.prep-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:var(--line-2);}
.prep-icon{
  width:40px;height:40px;display:inline-flex;align-items:center;justify-content:center;
  border-radius:var(--pill);background:var(--sand);color:var(--ink);font-size:15px;margin-bottom:18px;
}
.prep-card h3{font-size:1.0625rem;font-weight:700;color:var(--ink);margin-bottom:10px;}
.prep-card p{font-size:15px;line-height:1.78;color:var(--muted);}
.prep-card .tag{margin-top:18px;}

/* ============ FAQ ============ */
.faq-list{border-top:1px solid var(--line);}
.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:24px;
  padding:26px 0;font-size:1.0625rem;font-weight:600;color:var(--ink);line-height:1.6;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary:hover{color:var(--accent);}
.faq-plus{
  flex:0 0 auto;width:22px;height:22px;position:relative;margin-top:4px;
  transition:transform .3s var(--ease);
}
.faq-plus::before,.faq-plus::after{
  content:"";position:absolute;background:var(--ink);transition:background-color .3s var(--ease);
}
.faq-plus::before{left:0;right:0;top:50%;height:1px;}
.faq-plus::after{top:0;bottom:0;left:50%;width:1px;}
.faq-item[open] .faq-plus{transform:rotate(45deg);}
.faq-item[open] .faq-plus::before,.faq-item[open] .faq-plus::after{background:var(--accent);}
.faq-answer{max-width:780px;padding:0 0 28px;font-size:15.5px;line-height:1.85;color:var(--muted);}
.faq-item[open] .faq-answer{animation:fadeUp .38s var(--ease);}
@keyframes fadeUp{from{opacity:0;transform:translateY(8px);}to{opacity:1;transform:none;}}

/* ============ CTA ============ */
.cta-band{background:var(--ink);border-radius:var(--r-card);padding:56px;}
.cta-band h2{font-size:clamp(1.5rem,2.6vw,2.1rem);line-height:1.3;letter-spacing:-.02em;color:#fff;}
.cta-band p{margin-top:14px;max-width:520px;font-size:15.5px;line-height:1.8;color:rgba(255,255,255,.72);}
.cta-form{display:flex;gap:12px;margin-top:8px;}
.cta-form input{
  flex:1 1 auto;height:48px;padding:0 16px;color:#fff;
  background:transparent;border:1px solid rgba(255,255,255,.28);border-radius:var(--r-btn);
  transition:border-color .22s var(--ease);
}
.cta-form input::placeholder{color:rgba(255,255,255,.5);}
.cta-form input:focus{outline:none;border-color:var(--accent);}
.cta-form .btn-primary{background:var(--accent);color:#fff;flex:0 0 auto;}
.cta-form .btn-primary:hover,.cta-form .btn-primary:focus{background:#fff;color:var(--ink);}
.cta-note{margin-top:16px;font-size:13px;color:rgba(255,255,255,.55);}
@media (max-width:767px){
  .cta-band{padding:36px 24px;}
  .cta-form{flex-direction:column;}
  .cta-form .btn-primary{width:100%;}
}

/* ============ 页脚 ============ */
.site-footer{margin-top:var(--sec-y);border-top:1px solid var(--line);padding:72px 0 28px;background:var(--bg);}
.footer-brand .brand{margin-bottom:16px;}
.footer-brand p{font-size:14.5px;line-height:1.8;color:var(--muted);max-width:340px;}
.social{display:flex;gap:14px;margin-top:22px;}
.social a{
  width:36px;height:36px;display:inline-flex;align-items:center;justify-content:center;
  border:1px solid var(--line-2);border-radius:50%;font-size:14px;color:var(--ink-2);
  transition:border-color .22s var(--ease),color .22s var(--ease),transform .22s var(--ease);
}
.social a:hover{border-color:var(--accent);color:var(--accent);transform:translateY(-2px);}
.footer-col h4{font-size:13px;letter-spacing:.08em;color:var(--ink);margin-bottom:16px;font-weight:700;}
.footer-col ul{display:flex;flex-direction:column;}
.footer-col li a{
  display:inline-block;font-size:14.5px;line-height:2.2;color:var(--muted);
  transition:transform .22s var(--ease),color .22s var(--ease);
}
.footer-col li a:hover{color:var(--accent);transform:translateX(2px);}
.footer-bottom{
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;
  margin-top:56px;padding-top:24px;border-top:1px solid var(--line);
  font-size:13px;color:var(--muted);
}
.footer-bottom a{color:var(--muted);}
.footer-bottom a:hover{color:var(--accent);}
@media (max-width:767px){
  .site-footer{padding-top:48px;}
  .footer-bottom{margin-top:36px;flex-direction:column;}
}

/* ============ 入场动效 ============ */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .48s var(--ease),transform .48s var(--ease);}
.reveal.in{opacity:1;transform:none;}
.points .reveal:nth-child(2){transition-delay:.06s;}
.points .reveal:nth-child(3){transition-delay:.12s;}
.prep-list .reveal:nth-child(2){transition-delay:.06s;}
.prep-list .reveal:nth-child(3){transition-delay:.12s;}

@media (prefers-reduced-motion: reduce){
  *,*::before,*::after{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important;}
  html{scroll-behavior:auto;}
  .reveal{opacity:1;transform:none;}
}