/* roulang page: index */
:root{
  --brand:#FF4D2E;
  --brand-dark:#E63A1C;
  --ink:#14110F;
  --lime:#C6F24E;
  --paper:#FAF8F5;
  --paper-2:#F0EBE5;
  --text:#14110F;
  --muted:#6B6259;
  --faint:#9A9188;
  --line:#E8E2DA;
  --radius-lg:24px;
  --radius:16px;
  --radius-sm:12px;
  --pill:999px;
  --shadow-1:0 1px 2px rgba(20,17,15,.05);
  --shadow-2:0 16px 40px -16px rgba(20,17,15,.18);
  --ease:cubic-bezier(.2,.7,.3,1);
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--paper);
  color:var(--text);
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
a:focus-visible,button:focus-visible,input:focus-visible{outline:2px solid var(--brand);outline-offset:3px;border-radius:6px}

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

.section{padding:64px 0}
@media (min-width:1024px){.section{padding:104px 0}}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:32px}
.section-title{font-size:28px;font-weight:800;letter-spacing:-.01em;line-height:1.3}
@media (min-width:1024px){.section-title{font-size:32px}}
.section-sub{margin-top:10px;color:var(--muted);font-size:15px;max-width:640px}
.text-link{font-size:14px;font-weight:600;color:var(--muted);display:inline-flex;align-items:center;gap:6px;white-space:nowrap;transition:color .2s var(--ease)}
.text-link span{transition:transform .2s var(--ease)}
.text-link:hover{color:var(--brand)}
.text-link:hover span{transform:translateX(4px)}

/* header */
.site-header{position:sticky;top:0;z-index:60;background:rgba(250,248,245,.86);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border-bottom:1px solid var(--line);transition:border-color .25s var(--ease)}
.site-header.is-scrolled{border-bottom-color:#D8D0C6}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:60px;gap:20px}
@media (min-width:1024px){.nav-inner{height:72px}}
.logo{display:inline-flex;align-items:center;gap:10px;font-size:17px;font-weight:900;letter-spacing:-.01em}
@media (min-width:1024px){.logo{font-size:19px}}
.logo-mark{width:28px;height:28px;border-radius:9px;background:var(--brand);position:relative;flex:0 0 auto}
.logo-mark::after{content:"";position:absolute;right:6px;bottom:6px;width:7px;height:7px;border-radius:50%;background:var(--lime)}
.nav-links{display:none;align-items:center;gap:32px}
@media (min-width:1024px){.nav-links{display:flex}}
.nav-links a{font-size:15px;font-weight:600;color:var(--muted);position:relative;padding:6px 0;transition:color .2s var(--ease)}
.nav-links a::after{content:"";position:absolute;left:0;bottom:-2px;height:2px;width:0;background:var(--brand);transition:width .22s var(--ease)}
.nav-links a:hover{color:var(--ink)}
.nav-links a:hover::after,.nav-links a.active::after{width:100%}
.nav-links a.active{color:var(--ink)}
.nav-right{display:flex;align-items:center;gap:12px}
.btn-ghost-sm{display:none;align-items:center;height:40px;padding:0 20px;border:1px solid var(--ink);border-radius:var(--pill);font-size:14px;font-weight:600;transition:background .2s var(--ease),color .2s var(--ease)}
@media (min-width:768px){.btn-ghost-sm{display:inline-flex}}
.btn-ghost-sm:hover{background:var(--ink);color:var(--paper)}
.icon-btn{width:40px;height:40px;border-radius:50%;border:1px solid var(--line);display:inline-flex;align-items:center;justify-content:center;color:var(--muted);transition:border-color .2s var(--ease),color .2s var(--ease)}
.icon-btn:hover{border-color:var(--ink);color:var(--ink)}
.burger{display:inline-flex;flex-direction:column;justify-content:center;gap:5px;width:40px;height:40px;border-radius:50%;border:1px solid var(--line);align-items:center}
@media (min-width:1024px){.burger{display:none}}
.burger i{display:block;width:16px;height:1.5px;background:var(--ink);transition:transform .2s var(--ease)}
.mobile-drawer{position:fixed;inset:0;background:var(--paper);z-index:80;display:none;flex-direction:column;padding:24px 20px}
.mobile-drawer.open{display:flex}
.drawer-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:40px}
.drawer-nav{display:flex;flex-direction:column;gap:8px}
.drawer-nav a{font-size:24px;font-weight:800;padding:14px 0;border-bottom:1px solid var(--line);opacity:0;transform:translateY(8px);animation:drawerIn .32s var(--ease) forwards}
.drawer-nav a:nth-child(1){animation-delay:.04s}
.drawer-nav a:nth-child(2){animation-delay:.08s}
.drawer-nav a:nth-child(3){animation-delay:.12s}
.drawer-nav a:nth-child(4){animation-delay:.16s}
.drawer-nav a:nth-child(5){animation-delay:.2s}
@keyframes drawerIn{to{opacity:1;transform:none}}
.drawer-foot{margin-top:auto;color:var(--muted);font-size:13px}

/* hero */
.hero{position:relative;padding:48px 0 64px;background:
  radial-gradient(circle at 88% 78%, rgba(255,77,46,.07) 0, rgba(255,77,46,0) 42%),
  var(--paper);
  overflow:hidden}
@media (min-width:1024px){.hero{padding:80px 0 104px}}
.hero::before{content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(232,226,218,.6) 1px,transparent 1px),linear-gradient(90deg,rgba(232,226,218,.6) 1px,transparent 1px);
  background-size:64px 64px;opacity:.5}
.hero-grid{position:relative;display:grid;grid-template-columns:1fr;gap:48px;align-items:center}
@media (min-width:1024px){.hero-grid{grid-template-columns:6fr 5fr;gap:64px}}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:12px;font-weight:600;letter-spacing:.08em;color:var(--brand);text-transform:uppercase}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--brand)}
.hero h1{margin-top:20px;font-size:40px;line-height:1.12;font-weight:900;letter-spacing:-.02em}
@media (min-width:768px){.hero h1{font-size:48px}}
.hero-sub{margin-top:20px;font-size:17px;color:var(--muted);max-width:520px}
.hero-actions{margin-top:32px;display:flex;flex-wrap:wrap;gap:12px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:48px;padding:0 28px;border-radius:var(--pill);font-size:15px;font-weight:700;transition:background .2s var(--ease),color .2s var(--ease),transform .2s var(--ease),border-color .2s var(--ease)}
.btn-primary{background:var(--ink);color:var(--paper)}
.btn-primary:hover{background:var(--brand);transform:translateY(-1px)}
.btn-outline{border:1px solid var(--ink);color:var(--ink)}
.btn-outline:hover{background:var(--ink);color:var(--paper)}
.btn-lime{background:var(--lime);color:var(--ink)}
.btn-lime:hover{filter:brightness(.94);box-shadow:0 0 0 4px rgba(198,242,78,.28)}
.hero-stats{margin-top:48px;display:grid;grid-template-columns:repeat(3,1fr);gap:20px;border-top:1px solid var(--line);padding-top:28px}
.stat-num{font-size:28px;font-weight:800;letter-spacing:-.02em}
.stat-num em{font-style:normal;color:var(--brand)}
.stat-label{margin-top:4px;font-size:12px;color:var(--faint);letter-spacing:.04em}

.phone-wrap{display:flex;justify-content:center}
.phone-card{position:relative;width:100%;max-width:340px;background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);padding:12px;box-shadow:var(--shadow-2)}
.phone-notch{width:48px;height:4px;border-radius:var(--pill);background:var(--line);margin:0 auto 10px}
.phone-screen{position:relative;aspect-ratio:9/16;border-radius:18px;overflow:hidden;background:var(--paper-2)}
.phone-screen img{width:100%;height:100%;object-fit:cover}
.phone-screen::after{content:"";position:absolute;inset:0;box-shadow:inset 0 0 0 1px rgba(255,255,255,.28);border-radius:18px;pointer-events:none}
.phone-caption{position:absolute;left:0;right:0;bottom:0;padding:56px 18px 18px;color:#FFF7F3;font-size:13px;font-weight:600;background:linear-gradient(to top,rgba(20,17,15,.86),rgba(20,17,15,0))}
.phone-tag{position:absolute;top:14px;left:14px;display:inline-flex;align-items:center;height:24px;padding:0 12px;border-radius:var(--pill);background:var(--lime);color:var(--ink);font-size:12px;font-weight:700}

/* clip rail */
.rail{display:flex;gap:20px;overflow-x:auto;scroll-snap-type:x mandatory;padding:4px 4px 16px;margin:0 -4px;scrollbar-width:none}
.rail::-webkit-scrollbar{display:none}
.clip{flex:0 0 68vw;scroll-snap-align:start;transition:transform .22s var(--ease)}
@media (min-width:640px){.clip{flex:0 0 240px}}
@media (min-width:1024px){.clip{flex:0 0 236px}}
.clip-media{position:relative;aspect-ratio:9/16;border-radius:20px;overflow:hidden;background:var(--paper-2);border:1px solid var(--line)}
.clip-media img{width:100%;height:100%;object-fit:cover;transition:transform .3s var(--ease)}
.clip:hover .clip-media img{transform:scale(1.04)}
.clip:hover{transform:translateY(-4px)}
.clip-badge{position:absolute;top:12px;left:12px;height:24px;display:inline-flex;align-items:center;padding:0 10px;border-radius:var(--pill);background:rgba(250,248,245,.92);color:var(--ink);font-size:12px;font-weight:600}
.clip-time{position:absolute;top:12px;right:12px;height:24px;display:inline-flex;align-items:center;padding:0 10px;border-radius:var(--pill);background:var(--lime);color:var(--ink);font-size:12px;font-weight:700}
.clip-play{position:absolute;top:50%;left:50%;width:48px;height:48px;margin:-24px 0 0 -24px;border-radius:50%;background:rgba(20,17,15,.55);display:flex;align-items:center;justify-content:center;opacity:0;transition:opacity .22s var(--ease);box-shadow:0 0 0 0 rgba(255,77,46,.5)}
.clip:hover .clip-play{opacity:1;box-shadow:0 0 0 6px rgba(255,77,46,.22)}
.clip-play::after{content:"";width:0;height:0;border-left:12px solid #FFF7F3;border-top:7px solid transparent;border-bottom:7px solid transparent;margin-left:3px}
.clip-overlay{position:absolute;left:0;right:0;bottom:0;padding:48px 14px 14px;background:linear-gradient(to top,rgba(20,17,15,.88),rgba(20,17,15,0));color:#FFF7F3}
.clip-title{font-size:14px;font-weight:700;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.clip-views{margin-top:6px;font-size:12px;color:rgba(255,247,243,.72)}

/* list */
.pick-list{border-top:1px solid var(--line)}
.pick-row{position:relative;display:grid;grid-template-columns:56px 1fr;gap:16px;align-items:center;padding:22px 16px;border-bottom:1px solid var(--line);transition:background .2s var(--ease)}
.pick-row::before{content:"";position:absolute;left:0;top:12px;bottom:12px;width:3px;border-radius:3px;background:var(--brand);transform:scaleY(0);transform-origin:center;transition:transform .22s var(--ease)}
.pick-row:hover{background:#fff}
.pick-row:hover::before{transform:scaleY(1)}
.pick-num{font-size:44px;font-weight:200;line-height:1;color:var(--line);letter-spacing:-.03em;transition:color .2s var(--ease)}
.pick-row:hover .pick-num{color:var(--brand)}
@media (min-width:1024px){
  .pick-row{grid-template-columns:88px 72px 1fr auto;gap:24px;padding:26px 20px}
  .pick-num{font-size:56px}
}
.pick-thumb{display:none;width:72px;height:72px;border-radius:var(--radius-sm);overflow:hidden;background:var(--paper-2)}
@media (min-width:1024px){.pick-thumb{display:block}}
.pick-thumb img{width:100%;height:100%;object-fit:cover}
.pick-title{font-size:18px;font-weight:700;line-height:1.45}
@media (min-width:1024px){.pick-title{font-size:20px}}
.pick-desc{margin-top:6px;font-size:14px;color:var(--muted)}
.pick-actions{margin-top:12px;display:flex;flex-wrap:wrap;align-items:center;gap:8px}
@media (min-width:1024px){.pick-actions{margin-top:0;justify-content:flex-end}}
.tag{display:inline-flex;align-items:center;height:24px;padding:0 12px;border-radius:var(--pill);background:var(--paper-2);color:var(--ink);font-size:12px;font-weight:600}
.tag-brand{background:rgba(255,77,46,.12);color:var(--brand)}
.btn-lime-sm{display:inline-flex;align-items:center;height:36px;padding:0 18px;border-radius:var(--pill);background:var(--lime);color:var(--ink);font-size:13px;font-weight:700;transition:filter .2s var(--ease),box-shadow .2s var(--ease)}
.btn-lime-sm:hover{filter:brightness(.94);box-shadow:0 0 0 4px rgba(198,242,78,.28)}

/* posts */
.post-grid{display:grid;grid-template-columns:1fr;gap:24px}
@media (min-width:640px){.post-grid{grid-template-columns:repeat(2,1fr)}}
@media (min-width:1024px){.post-grid{grid-template-columns:repeat(3,1fr);gap:32px}}
.post-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;transition:transform .2s var(--ease),box-shadow .2s var(--ease)}
.post-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2)}
.post-thumb{display:block;aspect-ratio:16/9;overflow:hidden;background:var(--paper-2)}
.post-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .3s var(--ease)}
.post-card:hover .post-thumb img{transform:scale(1.04)}
.post-body{padding:20px}
.post-title{margin-top:12px;font-size:18px;font-weight:700;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.post-card:hover .post-title{color:var(--brand)}
.post-title a:hover{color:var(--brand)}
.post-excerpt{margin-top:10px;font-size:14px;color:var(--muted);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.post-meta{margin-top:16px;padding-top:14px;border-top:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;font-size:13px;color:var(--faint)}
.post-more{color:var(--ink);font-weight:600;transition:color .2s var(--ease)}
.post-card:hover .post-more{color:var(--brand)}
.empty-state{min-height:200px;border:1px dashed var(--line);border-radius:var(--radius);display:flex;flex-direction:column;align-items:center;justify-content:center;gap:16px;color:var(--muted);font-size:15px;text-align:center;padding:24px}

/* dark band */
.band-dark{background:var(--ink);color:#FAF8F5;padding:64px 0}
@media (min-width:1024px){.band-dark{padding:96px 0}}
.band-dark .section-sub{color:#9A9188}
.band-dark .section-title{color:#FAF8F5}
.band-dark .text-link{color:#9A9188}
.band-dark .text-link:hover{color:var(--brand)}
.voice-rail{display:flex;gap:20px;overflow-x:auto;scroll-snap-type:x mandatory;padding-bottom:12px;scrollbar-width:none}
.voice-rail::-webkit-scrollbar{display:none}
.voice{flex:0 0 84vw;scroll-snap-align:start;background:#1F1B18;border-radius:var(--radius);padding:24px}
@media (min-width:640px){.voice{flex:0 0 300px}}
@media (min-width:1024px){.voice{flex:0 0 288px}}
.voice-head{display:flex;align-items:center;gap:12px}
.avatar{width:40px;height:40px;border-radius:50%;background:rgba(255,77,46,.18);border:1px solid rgba(255,255,255,.12);display:flex;align-items:center;justify-content:center;font-size:14px;font-weight:700;color:#FF9A82}
.voice-name{font-size:14px;font-weight:700}
.voice-src{font-size:12px;color:#9A9188}
.dots{margin-top:14px;display:flex;gap:5px}
.dots i{width:10px;height:10px;border-radius:3px;background:var(--brand)}
.dots i.off{background:rgba(250,248,245,.18)}
.voice-text{margin-top:14px;font-size:14px;color:#D8D0C6;line-height:1.8}

/* cta band */
.cta-band{margin:0 auto;border:1px solid var(--line);border-radius:var(--radius-lg);background:#fff;padding:28px;display:flex;flex-direction:column;gap:20px;box-shadow:var(--shadow-1)}
@media (min-width:768px){.cta-band{flex-direction:row;align-items:center;justify-content:space-between;padding:28px 36px}}
.cta-band h2{font-size:22px;font-weight:800;letter-spacing:-.01em}
.cta-band p{margin-top:6px;font-size:14px;color:var(--muted)}

/* faq */
.faq-list{border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-q{width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;padding:22px 4px;text-align:left;font-size:17px;font-weight:700;line-height:1.6}
.faq-sign{position:relative;width:20px;height:20px;flex:0 0 auto}
.faq-sign::before,.faq-sign::after{content:"";position:absolute;background:var(--brand);border-radius:2px;transition:transform .2s var(--ease)}
.faq-sign::before{left:0;top:9px;width:20px;height:2px}
.faq-sign::after{left:9px;top:0;width:2px;height:20px}
.faq-item.open .faq-sign::after{transform:rotate(90deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .2s var(--ease)}
.faq-a p{padding:0 4px 24px;font-size:15px;line-height:1.8;color:var(--muted);max-width:820px}

/* footer */
.site-footer{background:var(--ink);color:#FAF8F5;padding:64px 0 28px;margin-top:64px}
@media (min-width:1024px){.site-footer{padding:80px 0 32px;margin-top:104px}}
.footer-grid{display:grid;grid-template-columns:1fr 1fr;gap:36px}
@media (min-width:1024px){.footer-grid{grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:48px}}
.footer-logo{display:inline-flex;align-items:center;gap:10px;font-size:18px;font-weight:900}
.footer-claim{margin-top:16px;font-size:14px;color:#9A9188;max-width:320px;line-height:1.8}
.footer-col h3{font-size:13px;font-weight:600;color:#9A9188;letter-spacing:.06em;margin-bottom:16px}
.footer-col li{margin-bottom:10px}
.footer-col a{font-size:15px;color:#D8D0C6;transition:color .2s var(--ease),transform .2s var(--ease);display:inline-block}
.footer-col a:hover{color:var(--brand);transform:translateX(2px)}
.footer-note{font-size:14px;color:#9A9188;line-height:1.8}
.footer-bottom{margin-top:48px;padding-top:22px;border-top:1px solid rgba(250,248,245,.14);display:flex;flex-direction:column;gap:10px;font-size:13px;color:#9A9188}
@media (min-width:768px){.footer-bottom{flex-direction:row;align-items:center;justify-content:space-between}}

@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important;scroll-behavior:auto !important}
  .clip:hover,.post-card:hover,.btn:hover{transform:none !important}
  .clip:hover .clip-media img,.post-card:hover .post-thumb img{transform:none !important}
}

/* roulang page: article */
:root{
  --brand:#FF4D2E;
  --brand-deep:#E63A1C;
  --ink:#14110F;
  --lime:#C6F24E;
  --paper:#FAF8F5;
  --soft:#F0EBE5;
  --line:#E8E2DA;
  --t2:#6B6259;
  --t3:#9A9188;
  --r-xl:24px;
  --r-md:16px;
  --r-sm:12px;
  --pill:999px;
  --sh1:0 1px 2px rgba(20,17,15,.05);
  --sh2:0 16px 40px -16px rgba(20,17,15,.18);
  --ease:cubic-bezier(.2,.7,.3,1);
}
*,*::before,*::after{box-sizing:border-box}
html{
  background-color:var(--paper);
  background-image:
    linear-gradient(rgba(232,226,218,.75) 1px, transparent 1px),
    linear-gradient(90deg, rgba(232,226,218,.75) 1px, transparent 1px);
  background-size:64px 64px;
  -webkit-text-size-adjust:100%;
}
body{
  margin:0;
  font-family:-apple-system,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--ink);
  background:transparent;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none}
ul,ol{margin:0;padding:0;list-style:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
h1,h2,h3,h4,p{margin:0}
:focus-visible{outline:2px solid var(--brand);outline-offset:3px;border-radius:4px}

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

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(250,248,245,.86);
  -webkit-backdrop-filter:blur(12px);
  backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line);
  transition:border-color .22s var(--ease);
}
.site-header.is-scrolled{border-bottom-color:#D6CEC3}
.nav-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;height:72px}
@media (max-width:640px){.nav-inner{height:60px}}
.logo{display:inline-flex;align-items:center;gap:10px;font-size:19px;font-weight:900;letter-spacing:-.01em;white-space:nowrap}
.logo-mark{position:relative;width:28px;height:28px;flex:0 0 28px;border-radius:9px;background:var(--brand)}
.logo-mark::after{content:"";position:absolute;right:5px;bottom:5px;width:8px;height:8px;border-radius:50%;background:var(--lime)}
.nav-links{display:none;align-items:center;gap:32px;font-size:15px;font-weight:600}
@media (min-width:1024px){.nav-links{display:flex}}
.nav-links a{position:relative;padding:6px 0;color:var(--t2);transition:color .2s var(--ease)}
.nav-links a:hover{color:var(--ink)}
.nav-links a.active{color:var(--ink)}
.nav-links a.active::after{content:"";position:absolute;left:0;right:0;bottom:-4px;height:2px;border-radius:2px;background:var(--brand)}
.nav-right{display:flex;align-items:center;gap:10px}
.btn-ghost-sm{
  display:none;align-items:center;height:38px;padding:0 18px;
  border:1px solid var(--ink);border-radius:var(--pill);
  font-size:14px;font-weight:700;white-space:nowrap;
  transition:background .2s var(--ease),color .2s var(--ease),transform .2s var(--ease);
}
@media (min-width:768px){.btn-ghost-sm{display:inline-flex}}
.btn-ghost-sm:hover{background:var(--ink);color:var(--paper);transform:translateY(-1px)}
.icon-btn{
  width:38px;height:38px;border-radius:50%;
  border:1px solid var(--line);background:#fff;color:var(--t2);
  display:inline-flex;align-items:center;justify-content:center;
  transition:color .2s var(--ease),border-color .2s var(--ease);
}
.icon-btn:hover{color:var(--brand);border-color:var(--brand)}
.burger{display:flex;flex-direction:column;justify-content:center;gap:5px;width:40px;height:40px;padding:0}
.burger i{display:block;width:22px;height:2px;margin:0 auto;border-radius:2px;background:var(--ink);transition:transform .22s var(--ease),opacity .22s var(--ease)}
@media (min-width:1024px){.burger{display:none}}
.burger.is-open i:nth-child(1){transform:translateY(7px) rotate(45deg)}
.burger.is-open i:nth-child(2){opacity:0}
.burger.is-open i:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

.drawer{
  position:fixed;inset:0;z-index:70;background:var(--paper);
  display:flex;flex-direction:column;padding:20px;
  opacity:0;pointer-events:none;transform:translateY(-8px);
  transition:opacity .24s var(--ease),transform .24s var(--ease);
}
.drawer.is-open{opacity:1;pointer-events:auto;transform:translateY(0)}
.drawer-top{display:flex;align-items:center;justify-content:space-between;height:60px}
.drawer-close{width:40px;height:40px;font-size:26px;line-height:1;color:var(--ink)}
.drawer-links{margin-top:24px;display:flex;flex-direction:column;gap:6px}
.drawer-links a{
  font-size:24px;font-weight:800;padding:14px 0;border-bottom:1px solid var(--line);
  opacity:0;transform:translateY(6px);
}
.drawer.is-open .drawer-links a{animation:drawerIn .34s var(--ease) forwards}
.drawer.is-open .drawer-links a:nth-child(1){animation-delay:.02s}
.drawer.is-open .drawer-links a:nth-child(2){animation-delay:.06s}
.drawer.is-open .drawer-links a:nth-child(3){animation-delay:.1s}
.drawer.is-open .drawer-links a:nth-child(4){animation-delay:.14s}
.drawer.is-open .drawer-links a:nth-child(5){animation-delay:.18s}
@keyframes drawerIn{to{opacity:1;transform:translateY(0)}}
@media (min-width:1024px){.drawer{display:none}}

/* ---------- buttons ---------- */
.btn-primary{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 28px;border-radius:var(--pill);
  background:var(--ink);color:var(--paper);font-size:15px;font-weight:700;
  transition:background .2s var(--ease),transform .2s var(--ease);
}
.btn-primary:hover{background:var(--brand);transform:translateY(-1px)}
.btn-outline{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 28px;border-radius:var(--pill);
  border:1px solid var(--ink);background:transparent;color:var(--ink);
  font-size:15px;font-weight:700;
  transition:background .2s var(--ease),color .2s var(--ease),transform .2s var(--ease);
}
.btn-outline:hover{background:var(--ink);color:var(--paper);transform:translateY(-1px)}
.btn-lime{
  display:inline-flex;align-items:center;justify-content:center;
  height:44px;padding:0 24px;border-radius:var(--pill);
  background:var(--lime);color:var(--ink);font-size:14px;font-weight:800;white-space:nowrap;
  transition:filter .2s var(--ease),box-shadow .2s var(--ease),transform .2s var(--ease);
}
.btn-lime:hover{filter:brightness(.96);box-shadow:0 0 0 4px rgba(198,242,78,.28);transform:translateY(-1px)}

/* ---------- article head ---------- */
.article-hero{padding:36px 0 0}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--t3);line-height:1.6}
.breadcrumb a{transition:color .2s var(--ease)}
.breadcrumb a:hover{color:var(--brand)}
.breadcrumb .sep{color:#CFC7BD}
.breadcrumb .current{color:var(--ink);font-weight:600}

.article-head{max-width:720px;margin:28px auto 0}
.badge{
  display:inline-flex;align-items:center;height:24px;padding:0 12px;border-radius:var(--pill);
  background:rgba(255,77,46,.12);color:var(--brand);
  font-size:12px;font-weight:600;letter-spacing:.06em;
}
.article-head h1{
  margin:16px 0 18px;
  font-size:32px;line-height:1.28;font-weight:900;letter-spacing:-.02em;
}
@media (min-width:768px){.article-head h1{font-size:38px}}
@media (min-width:1024px){.article-head h1{font-size:40px;line-height:1.2}}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px;font-size:13px;color:var(--t3)}
.article-meta .dot{width:3px;height:3px;border-radius:50%;background:#CFC7BD}
.article-rule{max-width:720px;margin:28px auto 0;height:1px;background:var(--line)}

/* ---------- cover ---------- */
.article-cover{padding:32px 0 0}
.article-cover figure{max-width:720px;margin:0 auto}
.article-cover img{
  width:100%;aspect-ratio:16/9;object-fit:cover;
  border-radius:var(--r-md);border:1px solid var(--line);background:var(--soft);
}
.article-cover figcaption{margin-top:10px;font-size:13px;color:var(--t3);text-align:center}

/* ---------- body ---------- */
.article-main{padding:48px 0 0}
.article-body{
  max-width:720px;margin:0 auto;
  font-size:17px;line-height:1.9;color:var(--ink);
}
.article-body p{margin:0 0 20px}
.article-body h2{
  position:relative;margin:48px 0 20px;padding-left:16px;
  font-size:26px;line-height:1.4;font-weight:800;letter-spacing:-.01em;
}
@media (min-width:768px){.article-body h2{font-size:28px}}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.24em;width:4px;height:.92em;border-radius:2px;background:var(--brand);
}
.article-body h3{margin:32px 0 16px;font-size:22px;line-height:1.45;font-weight:700}
@media (min-width:768px){.article-body h3{font-size:24px}}
.article-body blockquote{
  margin:28px 0;padding:20px 24px;background:var(--soft);
  border-left:3px solid var(--brand);border-radius:0 var(--r-sm) var(--r-sm) 0;color:#3B3530;
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body ul{margin:0 0 20px}
.article-body ul li{position:relative;padding-left:22px;margin-bottom:10px}
.article-body ul li::before{
  content:"";position:absolute;left:2px;top:.75em;width:6px;height:6px;border-radius:50%;background:var(--brand);
}
.article-body ol{list-style:decimal;padding-left:22px;margin:0 0 20px}
.article-body ol li{margin-bottom:10px}
.article-body img{border-radius:var(--r-sm);margin:28px auto}
.article-body figcaption{font-size:13px;color:var(--t3);text-align:center;margin-top:8px}
.article-body a{
  color:var(--ink);
  text-decoration:underline;
  text-decoration-color:var(--brand);
  text-decoration-thickness:1px;
  text-underline-offset:3px;
  transition:text-decoration-thickness .2s var(--ease),color .2s var(--ease);
}
.article-body a:hover{color:var(--brand-deep);text-decoration-thickness:2px}
.article-body strong{font-weight:800}
.article-body hr{border:0;height:1px;background:var(--line);margin:40px 0}

.empty-state{
  max-width:720px;margin:0 auto;padding:64px 24px;text-align:center;
  border:1px dashed #D6CEC3;border-radius:var(--r-lg);background:#fff;
}
.empty-state p{font-size:17px;font-weight:700;margin-bottom:20px;color:var(--t2)}

/* ---------- follow bar ---------- */
.follow-bar{
  max-width:720px;margin:36px auto 0;
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  padding:14px 20px;border-radius:var(--r-sm);background:var(--lime);
}
.follow-bar p{font-size:14px;font-weight:700;line-height:1.6}
.follow-bar .hint{font-size:12px;font-weight:600;opacity:.7}

/* ---------- related ---------- */
.section{padding:80px 0 0}
@media (min-width:1024px){.section{padding:96px 0 0}}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:32px}
.section-head h2{font-size:26px;font-weight:800;letter-spacing:-.01em}
@media (min-width:1024px){.section-head h2{font-size:28px}}
.section-head .more{font-size:14px;font-weight:700;color:var(--t2);border-bottom:1px solid var(--line);padding-bottom:2px;transition:color .2s var(--ease),border-color .2s var(--ease)}
.section-head .more:hover{color:var(--brand);border-color:var(--brand)}

.related-grid{display:grid;grid-template-columns:1fr;gap:24px}
@media (min-width:640px){.related-grid{grid-template-columns:repeat(2,1fr)}}
@media (min-width:1024px){.related-grid{grid-template-columns:repeat(3,1fr);gap:32px}}
.related-card{
  display:flex;flex-direction:column;overflow:hidden;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-md);
  box-shadow:var(--sh1);
  transition:transform .22s var(--ease),box-shadow .22s var(--ease);
}
.related-card:hover{transform:translateY(-2px);box-shadow:var(--sh2)}
.related-card img{width:100%;aspect-ratio:16/9;object-fit:cover;background:var(--soft)}
.related-body{padding:18px 20px 20px;display:flex;flex-direction:column;gap:10px;flex:1}
.related-body h3{font-size:17px;line-height:1.5;font-weight:700;transition:color .2s var(--ease)}
.related-card:hover h3{color:var(--brand)}
.related-body .meta{margin-top:auto;display:flex;align-items:center;gap:8px;font-size:13px;color:var(--t3)}

/* ---------- cta ---------- */
.cta-inner{
  display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap;
  padding:28px 32px;border:1px solid var(--line);border-radius:var(--r-xl);background:#fff;
}
.cta-inner h2{font-size:22px;font-weight:800}
@media (min-width:1024px){.cta-inner h2{font-size:24px}}
.cta-inner p{margin-top:8px;font-size:15px;color:var(--t2);max-width:560px}

/* ---------- faq ---------- */
.faq-list{max-width:820px;border-top:1px solid var(--line)}
.faq-list details{border-bottom:1px solid var(--line)}
.faq-list summary{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 0;font-size:17px;font-weight:700;cursor:pointer;list-style:none;
  transition:color .2s var(--ease);
}
.faq-list summary::-webkit-details-marker{display:none}
.faq-list summary:hover{color:var(--brand)}
.faq-sign{position:relative;flex:0 0 16px;width:16px;height:16px}
.faq-sign::before,.faq-sign::after{
  content:"";position:absolute;left:0;top:7px;width:16px;height:2px;border-radius:2px;background:var(--brand);
  transition:transform .2s var(--ease);
}
.faq-sign::after{transform:rotate(90deg)}
.faq-list details[open] .faq-sign::after{transform:rotate(0)}
.faq-list .answer{padding:0 0 22px;font-size:15px;line-height:1.85;color:var(--t2);max-width:720px}

/* ---------- footer ---------- */
.site-footer{margin-top:96px;background:var(--ink);color:#EDE8E3}
.footer-grid{display:grid;grid-template-columns:1fr;gap:36px;padding:64px 0 40px}
@media (min-width:768px){.footer-grid{grid-template-columns:repeat(2,1fr)}}
@media (min-width:1024px){.footer-grid{grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:48px}}
.footer-logo{display:inline-flex;align-items:center;gap:10px;font-size:18px;font-weight:900;color:#FAF8F5}
.footer-claim{margin-top:16px;font-size:14px;line-height:1.85;color:#9A9188;max-width:320px}
.footer-col h3{margin:0 0 16px;font-size:13px;font-weight:600;letter-spacing:.08em;color:#9A9188}
.footer-col li{margin-bottom:12px}
.footer-col a{display:inline-block;font-size:15px;color:#EDE8E3;transition:color .2s var(--ease),transform .2s var(--ease)}
.footer-col a:hover{color:var(--brand);transform:translateX(2px)}
.footer-note{font-size:14px;line-height:1.85;color:#9A9188;max-width:300px}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;
  padding:20px 0 40px;border-top:1px solid #2A2521;font-size:13px;color:#9A9188;
}

@media (prefers-reduced-motion: reduce){
  *{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important}
  .related-card:hover,.btn-primary:hover,.btn-outline:hover,.btn-lime:hover,.btn-ghost-sm:hover{transform:none}
}

/* roulang page: category1 */
:root{
  --brand:#FF4D2E;
  --brand-dark:#E63A1C;
  --ink:#14110F;
  --paper:#FAF8F5;
  --soft:#F0EBE5;
  --line:#E8E2DA;
  --muted:#6B6259;
  --faint:#9A9188;
  --lime:#C6F24E;
  --r-lg:24px;
  --r-md:16px;
  --r-sm:12px;
  --sh-1:0 1px 2px rgba(20,17,15,.05);
  --sh-2:0 16px 40px -16px rgba(20,17,15,.18);
  --ease:cubic-bezier(.2,.7,.3,1);
  --header-h:72px;
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--ink);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{display:block;max-width:100%;height:auto;}
a{color:inherit;text-decoration:none;}
button{font:inherit;color:inherit;background:none;border:none;cursor:pointer;}
input,textarea,select{font:inherit;color:inherit;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
::selection{background:rgba(255,77,46,.22);}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:4px;}

.skip{position:absolute;left:-9999px;top:0;background:var(--ink);color:var(--paper);padding:10px 18px;border-radius:0 0 12px 0;z-index:200;}
.skip:focus{left:0;}

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

/* ---------- header ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:100;
  height:60px;
  background:rgba(250,248,245,.86);
  -webkit-backdrop-filter:blur(12px);
  backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line);
  transition:border-color .2s var(--ease);
}
.site-header.scrolled{border-bottom-color:#D9D1C7;}
@media (min-width:1024px){.site-header{height:var(--header-h);}}
.nav-inner{
  height:100%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
}
.logo{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-size:17px;
  font-weight:900;
  letter-spacing:-.01em;
  color:var(--ink);
  white-space:nowrap;
}
@media (min-width:1024px){.logo{font-size:19px;}}
.logo-mark{
  width:26px;height:26px;
  border-radius:8px;
  background:var(--brand);
  position:relative;
  flex:none;
  display:inline-block;
}
.logo-mark::after{
  content:"";
  position:absolute;
  right:5px;bottom:5px;
  width:6px;height:6px;
  border-radius:999px;
  background:var(--paper);
}
.nav-links{display:none;align-items:center;gap:32px;}
@media (min-width:1024px){.nav-links{display:flex;}}
.nav-links a{
  position:relative;
  font-size:15px;
  font-weight:600;
  color:var(--muted);
  padding:6px 0;
  transition:color .2s var(--ease);
}
.nav-links a::after{
  content:"";
  position:absolute;
  left:0;bottom:0;
  width:100%;height:2px;
  background:var(--brand);
  transform:scaleX(0);
  transform-origin:left;
  transition:transform .22s var(--ease);
}
.nav-links a:hover{color:var(--ink);}
.nav-links a:hover::after{transform:scaleX(1);}
.nav-links a.active{color:var(--ink);}
.nav-links a.active::after{transform:scaleX(1);}
.nav-right{display:flex;align-items:center;gap:10px;}
.btn-ghost-sm{
  display:none;
  align-items:center;
  height:38px;
  padding:0 18px;
  border:1px solid var(--ink);
  border-radius:999px;
  font-size:14px;
  font-weight:700;
  transition:background .2s var(--ease),color .2s var(--ease);
}
.btn-ghost-sm:hover{background:var(--ink);color:var(--paper);}
@media (min-width:768px){.btn-ghost-sm{display:inline-flex;}}
.icon-btn{
  width:38px;height:38px;
  display:grid;place-items:center;
  border:1px solid var(--line);
  border-radius:999px;
  color:var(--muted);
  background:#fff;
  transition:border-color .2s var(--ease),color .2s var(--ease);
}
.icon-btn:hover{border-color:var(--ink);color:var(--ink);}
.burger{
  width:38px;height:38px;
  display:grid;place-items:center;
  gap:5px;
  border:1px solid var(--line);
  border-radius:999px;
  background:#fff;
}
@media (min-width:1024px){.burger{display:none;}}
.burger i{display:block;width:16px;height:1.5px;background:var(--ink);border-radius:2px;}

/* ---------- drawer ---------- */
.drawer{
  position:fixed;
  inset:0;
  z-index:120;
  background:var(--paper);
  padding:24px;
  display:flex;
  flex-direction:column;
  opacity:0;
  visibility:hidden;
  transition:opacity .24s var(--ease),visibility .24s;
}
.drawer.open{opacity:1;visibility:visible;}
.drawer-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:40px;}
.drawer-close{
  width:40px;height:40px;
  display:grid;place-items:center;
  border:1px solid var(--line);
  border-radius:999px;
  font-size:20px;
  line-height:1;
}
.drawer nav{display:flex;flex-direction:column;gap:8px;}
.drawer nav a{
  font-size:24px;
  font-weight:800;
  padding:12px 0;
  border-bottom:1px solid var(--line);
  opacity:0;
  transform:translateY(8px);
}
.drawer.open nav a{animation:drawerIn .34s var(--ease) forwards;}
.drawer.open nav a:nth-child(1){animation-delay:.04s;}
.drawer.open nav a:nth-child(2){animation-delay:.08s;}
.drawer.open nav a:nth-child(3){animation-delay:.12s;}
.drawer.open nav a:nth-child(4){animation-delay:.16s;}
.drawer.open nav a:nth-child(5){animation-delay:.20s;}
@keyframes drawerIn{to{opacity:1;transform:none;}}

/* ---------- generic section ---------- */
.section{padding:64px 0;}
@media (min-width:1024px){.section{padding:104px 0;}}
.section.tight{padding:56px 0;}
@media (min-width:1024px){.section.tight{padding:80px 0;}}
.section-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:20px;
  margin-bottom:32px;
  flex-wrap:wrap;
}
.section-head h2{
  font-size:26px;
  font-weight:800;
  letter-spacing:-.01em;
  line-height:1.3;
}
@media (min-width:1024px){.section-head h2{font-size:32px;}}
.eyebrow{
  display:inline-block;
  font-size:12px;
  font-weight:700;
  letter-spacing:.08em;
  text-transform:uppercase;
  color:var(--brand);
  margin-bottom:14px;
}
.link-arrow{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:14px;
  font-weight:700;
  color:var(--muted);
  border-bottom:1px solid transparent;
  transition:color .2s var(--ease),border-color .2s var(--ease);
}
.link-arrow span{transition:transform .2s var(--ease);}
.link-arrow:hover{color:var(--brand);border-bottom-color:var(--brand);}
.link-arrow:hover span{transform:translateX(4px);}
.lead{color:var(--muted);max-width:720px;}

/* ---------- buttons ---------- */
.btn-primary,.btn-outline,.btn-lime{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:48px;
  padding:0 28px;
  border-radius:999px;
  font-size:15px;
  font-weight:700;
  white-space:nowrap;
  transition:background .2s var(--ease),color .2s var(--ease),transform .2s var(--ease),box-shadow .2s var(--ease);
}
.btn-primary{background:var(--ink);color:var(--paper);}
.btn-primary:hover{background:var(--brand);transform:translateY(-1px);}
.btn-outline{border:1px solid var(--ink);color:var(--ink);background:transparent;}
.btn-outline:hover{background:var(--ink);color:var(--paper);transform:translateY(-1px);}
.btn-lime{background:var(--lime);color:var(--ink);}
.btn-lime:hover{filter:brightness(.96);box-shadow:0 0 0 4px rgba(198,242,78,.28);transform:translateY(-1px);}

/* ---------- hero ---------- */
.cat-hero{
  position:relative;
  padding:40px 0 64px;
  overflow:hidden;
  background:
    linear-gradient(rgba(232,226,218,.6) 1px,transparent 1px) 0 0/100% 80px,
    linear-gradient(90deg,rgba(232,226,218,.6) 1px,transparent 1px) 0 0/80px 100%,
    var(--paper);
}
.cat-hero::after{
  content:"";
  position:absolute;
  right:-120px;
  bottom:-140px;
  width:420px;height:420px;
  border-radius:999px;
  background:rgba(255,77,46,.06);
  pointer-events:none;
}
@media (min-width:1024px){.cat-hero{padding:56px 0 96px;}}
.crumb{
  display:flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  color:var(--faint);
  margin-bottom:28px;
  flex-wrap:wrap;
}
.crumb a{transition:color .2s var(--ease);}
.crumb a:hover{color:var(--brand);}
.crumb .current{color:var(--ink);font-weight:600;}
.cat-hero h1{
  font-size:34px;
  font-weight:900;
  line-height:1.16;
  letter-spacing:-.02em;
  margin-bottom:18px;
}
@media (min-width:640px){.cat-hero h1{font-size:40px;}}
@media (min-width:1024px){.cat-hero h1{font-size:48px;}}
.hero-sub{
  font-size:17px;
  color:var(--muted);
  max-width:560px;
  margin-bottom:14px;
}
.hero-note{
  font-size:13px;
  color:var(--faint);
  margin-bottom:28px;
}
.hero-cta{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:36px;}
.stat-row{
  display:flex;
  flex-wrap:wrap;
  gap:28px 40px;
  padding-top:26px;
  border-top:1px solid var(--line);
}
.stat-row li{min-width:96px;}
.stat-num{
  font-size:28px;
  font-weight:800;
  line-height:1.1;
  letter-spacing:-.02em;
}
.stat-num em{font-style:normal;font-size:14px;font-weight:700;color:var(--brand);margin-left:2px;}
.stat-label{font-size:12px;color:var(--faint);margin-top:4px;letter-spacing:.02em;}

.phone-wrap{display:flex;justify-content:center;}
.phone-card{
  position:relative;
  width:100%;
  max-width:340px;
  aspect-ratio:9/16;
  border-radius:var(--r-lg);
  overflow:hidden;
  border:1px solid var(--line);
  box-shadow:var(--sh-2);
  background:var(--soft);
}
.phone-card img{width:100%;height:100%;object-fit:cover;}
.phone-card::before{
  content:"";
  position:absolute;
  top:12px;left:50%;
  transform:translateX(-50%);
  width:48px;height:4px;
  border-radius:999px;
  background:rgba(250,248,245,.7);
  z-index:3;
}
.phone-card::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:0;
  height:120px;
  background:linear-gradient(to top,rgba(20,17,15,.86),rgba(20,17,15,0));
  z-index:2;
}
.phone-caption{
  position:absolute;
  left:18px;right:18px;bottom:16px;
  z-index:4;
  color:var(--paper);
  font-size:13px;
  font-weight:600;
  letter-spacing:.01em;
}
.phone-tag{
  position:absolute;
  top:16px;left:16px;
  z-index:4;
  display:inline-flex;
  align-items:center;
  height:24px;
  padding:0 10px;
  border-radius:999px;
  background:var(--lime);
  color:var(--ink);
  font-size:12px;
  font-weight:700;
}

/* ---------- reel wall ---------- */
.reel-wall{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:20px 16px;
}
@media (min-width:768px){.reel-wall{grid-template-columns:repeat(3,minmax(0,1fr));gap:28px 20px;}}
@media (min-width:1024px){
  .reel-wall{grid-template-columns:repeat(4,minmax(0,1fr));gap:32px 24px;}
  .reel-wall > *:nth-child(4n+2){margin-top:28px;}
  .reel-wall > *:nth-child(4n+4){margin-top:48px;}
}
.reel-card{display:flex;flex-direction:column;gap:12px;min-width:0;}
.reel-frame{
  position:relative;
  display:block;
  aspect-ratio:9/16;
  border-radius:20px;
  overflow:hidden;
  border:1px solid var(--line);
  background:var(--soft);
  transition:transform .22s var(--ease),box-shadow .22s var(--ease);
}
.reel-card:hover .reel-frame{transform:translateY(-4px);box-shadow:var(--sh-2);}
.reel-frame img{width:100%;height:100%;object-fit:cover;transition:transform .4s var(--ease);}
.reel-card:hover .reel-frame img{transform:scale(1.04);}
.reel-frame::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:0;
  height:96px;
  background:linear-gradient(to top,rgba(20,17,15,.78),rgba(20,17,15,0));
}
.reel-badge{
  position:absolute;
  top:12px;left:12px;
  z-index:3;
  display:inline-flex;
  align-items:center;
  height:24px;
  padding:0 10px;
  border-radius:999px;
  background:rgba(250,248,245,.94);
  color:var(--ink);
  font-size:12px;
  font-weight:700;
}
.reel-time{
  position:absolute;
  top:12px;right:12px;
  z-index:3;
  display:inline-flex;
  align-items:center;
  height:24px;
  padding:0 9px;
  border-radius:999px;
  background:var(--lime);
  color:var(--ink);
  font-size:12px;
  font-weight:700;
  letter-spacing:.02em;
}
.reel-play{
  position:absolute;
  inset:0;
  margin:auto;
  width:54px;height:54px;
  z-index:4;
  display:grid;
  place-items:center;
  border-radius:999px;
  background:rgba(20,17,15,.55);
  border:2px solid rgba(255,77,46,.75);
  color:#fff;
  opacity:0;
  transform:scale(.9);
  transition:opacity .2s var(--ease),transform .2s var(--ease);
}
.reel-card:hover .reel-play{opacity:1;transform:scale(1);}
.reel-views{
  position:absolute;
  left:14px;bottom:12px;
  z-index:4;
  color:rgba(250,248,245,.88);
  font-size:12px;
  font-weight:600;
}
.reel-title{
  font-size:15px;
  font-weight:700;
  line-height:1.5;
  transition:color .2s var(--ease);
}
.reel-card:hover .reel-title{color:var(--brand);}
.reel-meta{display:flex;align-items:center;gap:8px;flex-wrap:wrap;}
.tag{
  display:inline-flex;
  align-items:center;
  height:24px;
  padding:0 10px;
  border-radius:999px;
  background:var(--soft);
  color:var(--ink);
  font-size:12px;
  font-weight:600;
}
.tag-brand{background:rgba(255,77,46,.12);color:var(--brand-dark);}

/* ---------- spec strip ---------- */
.spec-strip{
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
}
.spec-row{
  display:grid;
  grid-template-columns:1fr;
}
@media (min-width:768px){.spec-row{grid-template-columns:repeat(4,minmax(0,1fr));}}
.spec-cell{
  padding:26px 0;
  border-bottom:1px solid var(--line);
}
@media (min-width:768px){
  .spec-cell{border-bottom:none;border-left:1px solid var(--line);padding:34px 26px;}
  .spec-cell:first-child{border-left:none;padding-left:0;}
}
.spec-label{
  font-size:12px;
  font-weight:700;
  letter-spacing:.08em;
  text-transform:uppercase;
  color:var(--faint);
  margin-bottom:8px;
}
.spec-value{font-size:17px;font-weight:800;letter-spacing:-.01em;}
.spec-desc{font-size:14px;color:var(--muted);margin-top:6px;}

/* ---------- flow list ---------- */
.flow{border-top:1px solid var(--line);}
.flow-item{
  display:grid;
  grid-template-columns:64px 1fr;
  gap:18px;
  align-items:center;
  padding:24px 18px;
  border-bottom:1px solid var(--line);
  position:relative;
  transition:background .2s var(--ease),padding-left .2s var(--ease);
}
@media (min-width:1024px){
  .flow-item{grid-template-columns:120px 1fr;padding:32px 24px;}
}
.flow-item::before{
  content:"";
  position:absolute;
  left:0;top:0;bottom:0;
  width:3px;
  background:var(--brand);
  transform:scaleY(0);
  transform-origin:top;
  transition:transform .22s var(--ease);
}
.flow-item:hover{background:#fff;padding-left:34px;}
.flow-item:hover::before{transform:scaleY(1);}
.flow-num{
  font-size:40px;
  font-weight:200;
  line-height:1;
  color:var(--line);
  letter-spacing:-.03em;
  transition:color .2s var(--ease);
}
@media (min-width:1024px){.flow-num{font-size:72px;}}
.flow-item:hover .flow-num{color:var(--brand);}
.flow-title{font-size:18px;font-weight:800;letter-spacing:-.01em;}
.flow-text{font-size:15px;color:var(--muted);margin-top:4px;}

/* ---------- voice band ---------- */
.voice-band{
  background:var(--ink);
  color:var(--paper);
  padding:72px 0;
  overflow:hidden;
}
@media (min-width:1024px){.voice-band{padding:96px 0;}}
.voice-band h2{
  font-size:26px;
  font-weight:800;
  letter-spacing:-.01em;
  color:var(--paper);
}
@media (min-width:1024px){.voice-band h2{font-size:32px;}}
.voice-sub{color:var(--faint);font-size:15px;margin-top:10px;}
.voice-track{
  display:flex;
  gap:18px;
  margin-top:40px;
  overflow-x:auto;
  scroll-snap-type:x mandatory;
  padding-bottom:8px;
  scrollbar-width:none;
}
.voice-track::-webkit-scrollbar{display:none;}
.voice-card{
  flex:0 0 280px;
  scroll-snap-align:start;
  background:#1F1B18;
  border:1px solid #2C2723;
  border-radius:var(--r-md);
  padding:22px;
}
.voice-top{display:flex;align-items:center;gap:12px;margin-bottom:14px;}
.avatar{
  width:40px;height:40px;
  border-radius:999px;
  background:var(--brand);
  color:#fff;
  display:grid;
  place-items:center;
  font-size:14px;
  font-weight:800;
  flex:none;
}
.voice-name{font-size:14px;font-weight:700;color:var(--paper);}
.voice-src{font-size:12px;color:var(--faint);}
.voice-text{font-size:14px;line-height:1.8;color:#D8D2CB;}
.dots{display:flex;gap:5px;margin-top:14px;}
.dots i{width:9px;height:9px;background:var(--brand);border-radius:2px;display:block;}
.dots i.off{background:#3A3430;}

/* ---------- 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:center;
  justify-content:space-between;
  gap:18px;
  padding:22px 4px;
  font-size:17px;
  font-weight:700;
  letter-spacing:-.01em;
  transition:color .2s var(--ease);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{
  content:"+";
  flex:none;
  width:28px;height:28px;
  display:grid;
  place-items:center;
  border:1px solid var(--line);
  border-radius:999px;
  font-size:16px;
  font-weight:700;
  color:var(--muted);
  transition:transform .2s var(--ease),background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease);
}
.faq-item summary:hover{color:var(--brand);}
.faq-item summary:hover::after{border-color:var(--brand);color:var(--brand);}
.faq-item[open] summary::after{
  content:"−";
  transform:rotate(180deg);
  background:var(--brand);
  border-color:var(--brand);
  color:#fff;
}
.faq-body{
  padding:0 4px 24px;
  font-size:15px;
  line-height:1.85;
  color:var(--muted);
  max-width:820px;
}

/* ---------- cta band ---------- */
.cta-band{
  border:1px solid var(--ink);
  border-radius:var(--r-lg);
  background:var(--paper);
  padding:28px 24px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  flex-wrap:wrap;
}
@media (min-width:1024px){.cta-band{padding:32px 40px;}}
.cta-band h2{font-size:22px;font-weight:800;letter-spacing:-.01em;}
@media (min-width:1024px){.cta-band h2{font-size:24px;}}
.cta-band p{font-size:14px;color:var(--muted);margin-top:6px;}

/* ---------- chip row ---------- */
.chip-row{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  padding-top:8px;
}
.chip{
  display:inline-flex;
  align-items:center;
  height:38px;
  padding:0 18px;
  border:1px solid var(--line);
  border-radius:999px;
  font-size:14px;
  font-weight:600;
  color:var(--muted);
  background:#fff;
  transition:border-color .2s var(--ease),color .2s var(--ease),background .2s var(--ease),transform .2s var(--ease);
}
.chip:hover{border-color:var(--ink);color:var(--ink);transform:translateY(-2px);}
.chip.active{background:var(--ink);border-color:var(--ink);color:var(--paper);}

/* ---------- footer ---------- */
.site-footer{
  background:var(--ink);
  color:var(--paper);
  padding:64px 0 28px;
  margin-top:0;
}
.footer-grid{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:36px 24px;
}
@media (min-width:1024px){.footer-grid{grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:48px;}}
.footer-logo{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-size:17px;
  font-weight:900;
  letter-spacing:-.01em;
  color:var(--paper);
}
.footer-claim{
  font-size:14px;
  color:#B7AFA6;
  margin-top:14px;
  max-width:300px;
  line-height:1.8;
}
.footer-col h3{
  font-size:13px;
  font-weight:600;
  letter-spacing:.06em;
  color:var(--faint);
  margin-bottom:16px;
}
.footer-col ul{display:flex;flex-direction:column;gap:10px;}
.footer-col a{
  font-size:15px;
  color:#D8D2CB;
  transition:color .2s var(--ease),transform .2s var(--ease);
  display:inline-block;
}
.footer-col a:hover{color:var(--brand);transform:translateX(-2px);}
.footer-note{font-size:14px;color:#B7AFA6;line-height:1.8;max-width:280px;}
.footer-bottom{
  margin-top:48px;
  padding-top:22px;
  border-top:1px solid #2C2723;
  display:flex;
  flex-wrap:wrap;
  gap:10px 18px;
  justify-content:space-between;
  font-size:13px;
  color:#8E867D;
}

/* ---------- reduced motion ---------- */
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{
    transition-duration:.01ms !important;
    animation-duration:.01ms !important;
    animation-iteration-count:1 !important;
  }
  .reel-card:hover .reel-frame,
  .btn-primary:hover,
  .btn-outline:hover,
  .btn-lime:hover,
  .chip:hover,
  .flow-item:hover,
  .reel-card:hover .reel-frame img{transform:none !important;}
  html{scroll-behavior:auto;}
}

/* roulang page: category2 */
:root{
  --brand:#FF4D2E;
  --brand-dark:#E63A1C;
  --ink:#14110F;
  --lime:#C6F24E;
  --paper:#FAF8F5;
  --paper-2:#F0EBE5;
  --muted:#6B6259;
  --weak:#9A9188;
  --line:#E8E2DA;
  --white:#FFFFFF;
  --r-lg:24px;
  --r-md:16px;
  --r-sm:12px;
  --shadow-1:0 1px 2px rgba(20,17,15,.05);
  --shadow-2:0 16px 40px -16px rgba(20,17,15,.18);
  --ease:cubic-bezier(.2,.7,.3,1);
  --nav-h:72px;
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:-apple-system,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--ink);
  background:var(--paper);
  padding-top:var(--nav-h);
}
img{max-width:100%;display:block;height:auto;}
a{color:inherit;text-decoration:none;}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:4px;}

body::before{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  z-index:0;
  background-image:
    linear-gradient(to right, rgba(232,226,218,.55) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(232,226,218,.55) 1px, transparent 1px);
  background-size:120px 120px;
  opacity:.42;
}
body::after{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  z-index:0;
  opacity:.035;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='3'/%3E%3C/filter%3E%3Crect width='160' height='160' filter='url(/%23n)'/%3E%3C/svg%3E");
}
.site-header,.site-footer,main{position:relative;z-index:1;}

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

/* ============ 导航 ============ */
.site-header{
  position:fixed;
  top:0;left:0;right:0;
  z-index:60;
  height:var(--nav-h);
  background:rgba(250,248,245,.86);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line);
  transition:border-color .22s var(--ease);
}
.site-header.is-scrolled{border-bottom-color:#D9D1C7;}
.nav-inner{height:var(--nav-h);display:flex;align-items:center;gap:24px;}
.logo{
  display:inline-flex;align-items:center;gap:10px;
  font-size:18px;font-weight:900;letter-spacing:-.01em;color:var(--ink);
  white-space:nowrap;
}
.logo-mark{
  width:28px;height:28px;border-radius:8px;
  background:var(--brand);
  position:relative;
  flex:none;
}
.logo-mark::after{
  content:"";position:absolute;right:5px;bottom:5px;
  width:8px;height:8px;border-radius:50%;background:var(--lime);
}
.nav-links{display:none;align-items:center;gap:32px;margin-left:auto;}
.nav-links a{
  position:relative;
  font-size:15px;font-weight:600;color:var(--muted);
  padding:6px 0;
  transition:color .2s var(--ease);
}
.nav-links a::after{
  content:"";position:absolute;left:0;right:0;bottom:0;
  height:2px;background:var(--brand);
  transform:scaleX(0);transform-origin:left;
  transition:transform .24s var(--ease);
}
.nav-links a:hover{color:var(--ink);}
.nav-links a:hover::after{transform:scaleX(1);}
.nav-links a.active{color:var(--ink);}
.nav-links a.active::after{transform:scaleX(1);}
.nav-right{display:flex;align-items:center;gap:12px;margin-left:auto;}
.nav-links + .nav-right{margin-left:0;}
.btn-ghost-sm{
  display:none;
  align-items:center;height:40px;padding:0 20px;
  border:1px solid var(--ink);border-radius:999px;
  font-size:14px;font-weight:700;
  transition:background .2s var(--ease),color .2s var(--ease);
}
.btn-ghost-sm:hover{background:var(--ink);color:var(--paper);}
.icon-btn{
  width:40px;height:40px;border-radius:50%;
  border:1px solid var(--line);
  display:none;align-items:center;justify-content:center;
  color:var(--ink);background:var(--white);
  transition:border-color .2s var(--ease),transform .2s var(--ease);
}
.icon-btn:hover{border-color:var(--ink);transform:translateY(-2px);}
.burger{
  width:42px;height:42px;border-radius:12px;
  display:flex;flex-direction:column;justify-content:center;align-items:center;gap:5px;
}
.burger i{display:block;width:20px;height:1.6px;background:var(--ink);transition:transform .22s var(--ease),opacity .22s var(--ease);}
.burger.is-open i:nth-child(1){transform:translateY(6.6px) rotate(45deg);}
.burger.is-open i:nth-child(2){opacity:0;}
.burger.is-open i:nth-child(3){transform:translateY(-6.6px) rotate(-45deg);}
@media (min-width:1024px){
  .nav-links{display:flex;}
  .btn-ghost-sm{display:inline-flex;}
  .icon-btn{display:inline-flex;}
  .burger{display:none;}
}

/* 移动抽屉 */
.drawer{
  position:fixed;inset:0;z-index:80;
  background:var(--paper);
  transform:translateX(100%);
  transition:transform .3s var(--ease);
  padding:24px 20px;
  display:flex;flex-direction:column;
}
.drawer.is-open{transform:translateX(0);}
.drawer-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:40px;}
.drawer-title{font-size:15px;font-weight:900;letter-spacing:-.01em;}
.drawer-close{width:40px;height:40px;border-radius:50%;border:1px solid var(--line);font-size:20px;line-height:1;}
.drawer nav{display:flex;flex-direction:column;gap:8px;}
.drawer nav a{
  font-size:24px;font-weight:800;padding:14px 0;
  border-bottom:1px solid var(--line);
  opacity:0;transform:translateY(10px);
}
.drawer.is-open nav a{animation:drawerIn .4s var(--ease) forwards;}
.drawer.is-open nav a:nth-child(1){animation-delay:.04s;}
.drawer.is-open nav a:nth-child(2){animation-delay:.08s;}
.drawer.is-open nav a:nth-child(3){animation-delay:.12s;}
.drawer.is-open nav a:nth-child(4){animation-delay:.16s;}
.drawer.is-open nav a:nth-child(5){animation-delay:.20s;}
.drawer nav a.active{color:var(--brand);}
@keyframes drawerIn{to{opacity:1;transform:translateY(0);}}
@media (min-width:1024px){.drawer{display:none;}}

/* ============ 通用 ============ */
.section{padding:64px 0;}
@media (min-width:1024px){.section{padding:96px 0;}}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:32px;flex-wrap:wrap;}
.eyebrow{
  font-size:12px;font-weight:600;letter-spacing:.14em;text-transform:uppercase;
  color:var(--muted);margin-bottom:10px;display:block;
}
.h2{font-size:26px;font-weight:800;line-height:1.3;letter-spacing:-.015em;}
@media (min-width:1024px){.h2{font-size:32px;}}
.section-sub{font-size:15px;color:var(--muted);max-width:620px;}
.link-more{
  font-size:14px;font-weight:700;color:var(--ink);
  border-bottom:1px solid var(--ink);padding-bottom:2px;
  transition:color .2s var(--ease),border-color .2s var(--ease);
}
.link-more:hover{color:var(--brand);border-color:var(--brand);}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 28px;border-radius:999px;
  font-size:15px;font-weight:700;letter-spacing:.01em;
  transition:transform .2s var(--ease),background .2s var(--ease),color .2s var(--ease),box-shadow .2s var(--ease);
}
.btn-primary{background:var(--ink);color:var(--paper);}
.btn-primary:hover{background:var(--brand);transform:translateY(-1px);}
.btn-outline{border:1px solid var(--ink);color:var(--ink);background:transparent;}
.btn-outline:hover{background:var(--ink);color:var(--paper);}
.btn-lime{
  height:38px;padding:0 20px;border-radius:999px;
  background:var(--lime);color:var(--ink);
  font-size:14px;font-weight:700;
  display:inline-flex;align-items:center;
  transition:box-shadow .2s var(--ease),filter .2s var(--ease);
}
.btn-lime:hover{filter:brightness(.96);box-shadow:0 0 0 4px rgba(198,242,78,.28);}
.tag{
  display:inline-flex;align-items:center;height:24px;padding:0 12px;
  border-radius:999px;background:var(--paper-2);color:var(--ink);
  font-size:12px;font-weight:600;line-height:1;
}
.tag-brand{background:rgba(255,77,46,.12);color:var(--brand);}
.tag-lime{background:var(--lime);color:var(--ink);}

/* 面包屑 */
.crumb{padding:28px 0 0;font-size:13px;color:var(--weak);}
.crumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;}
.crumb li::after{content:"/";margin-left:8px;color:var(--line);}
.crumb li:last-child::after{content:"";}
.crumb a{color:var(--weak);transition:color .2s var(--ease);}
.crumb a:hover{color:var(--brand);}
.crumb li:last-child{color:var(--ink);font-weight:600;}

/* ============ Hero ============ */
.hero{padding:36px 0 56px;position:relative;overflow:hidden;}
@media (min-width:1024px){.hero{padding:48px 0 88px;}}
.hero-grid{display:grid;gap:40px;}
@media (min-width:1024px){
  .hero-grid{grid-template-columns:1.15fr .85fr;gap:64px;align-items:center;}
}
.hero h1{
  font-size:clamp(30px,5vw,48px);
  font-weight:900;line-height:1.18;letter-spacing:-.02em;
  margin:14px 0 18px;
}
.hero h1 em{font-style:normal;color:var(--brand);}
.hero-lead{font-size:17px;color:var(--muted);max-width:540px;}
.hero-scope{
  margin-top:16px;font-size:13px;color:var(--weak);
  padding-left:12px;border-left:3px solid var(--brand);line-height:1.7;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px;}
.hero-stats{
  display:grid;grid-template-columns:repeat(3,1fr);gap:20px;
  margin-top:40px;padding-top:28px;border-top:1px solid var(--line);
}
.hero-stats .num{font-size:28px;font-weight:800;letter-spacing:-.02em;line-height:1.2;}
.hero-stats .num span{font-size:14px;font-weight:700;color:var(--brand);margin-left:2px;}
.hero-stats .cap{font-size:12px;color:var(--muted);margin-top:4px;}

.phone-card{
  position:relative;
  width:min(340px,86vw);
  margin:0 auto;
  aspect-ratio:9/16;
  border-radius:var(--r-lg);
  border:1px solid var(--line);
  background:var(--white);
  padding:10px;
  box-shadow:var(--shadow-2);
}
.phone-card::before{
  content:"";position:absolute;top:16px;left:50%;transform:translateX(-50%);
  width:48px;height:4px;border-radius:999px;background:var(--line);
}
.phone-screen{
  position:relative;width:100%;height:100%;border-radius:18px;overflow:hidden;
  background:var(--paper-2);
}
.phone-screen img{width:100%;height:100%;object-fit:cover;}
.phone-screen::after{
  content:"";position:absolute;inset:auto 0 0 0;height:130px;
  background:linear-gradient(to top,rgba(20,17,15,.86),rgba(20,17,15,0));
}
.phone-caption{
  position:absolute;left:18px;right:18px;bottom:16px;z-index:2;
  color:var(--paper);font-size:13px;font-weight:700;line-height:1.5;
}
.hero-blob{
  position:absolute;right:-120px;bottom:-140px;
  width:420px;height:420px;border-radius:50%;
  background:rgba(255,77,46,.06);
  pointer-events:none;
}

/* ============ 榜单 ============ */
.rank-wrap{
  border-top:1px solid var(--line);
  background:var(--paper);
}
.rank-row{
  position:relative;
  display:grid;
  grid-template-columns:1fr;
  gap:16px;
  padding:26px 0;
  border-bottom:1px solid var(--line);
  transition:background .22s var(--ease);
}
.rank-row::before{
  content:"";position:absolute;left:-16px;top:14px;bottom:14px;width:3px;
  background:var(--brand);border-radius:2px;
  transform:scaleY(0);transform-origin:top;
  transition:transform .24s var(--ease);
}
.rank-row:hover{background:var(--white);}
.rank-row:hover::before{transform:scaleY(1);}
@media (min-width:768px){
  .rank-row{
    grid-template-columns:200px 72px 1fr auto;
    align-items:center;
    gap:28px;
    padding:30px 0;
    min-height:120px;
  }
}
.rank-side{display:flex;align-items:baseline;gap:14px;}
.rank-num{
  font-size:56px;font-weight:200;line-height:1;letter-spacing:-.04em;
  color:var(--line);
  transition:color .22s var(--ease);
}
@media (min-width:768px){.rank-num{font-size:72px;}}
.rank-row:hover .rank-num{color:var(--brand);}
.rank-score{font-size:13px;font-weight:700;color:var(--muted);white-space:nowrap;}
.rank-score span{font-size:11px;color:var(--weak);font-weight:600;}
.rank-thumb{
  width:72px;height:72px;border-radius:var(--r-sm);overflow:hidden;
  border:1px solid var(--line);background:var(--paper-2);flex:none;
}
.rank-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .3s var(--ease);}
.rank-row:hover .rank-thumb img{transform:scale(1.08);}
.rank-main h3{font-size:20px;font-weight:700;letter-spacing:-.01em;}
.rank-main p{font-size:15px;color:var(--muted);margin-top:4px;max-width:640px;}
.rank-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:12px;}
.rank-action{display:flex;align-items:center;gap:14px;}
.rank-more{
  font-size:14px;font-weight:700;color:var(--muted);
  transition:color .2s var(--ease),transform .2s var(--ease);
}
.rank-more:hover{color:var(--brand);transform:translateX(4px);}
@media (max-width:767px){
  .rank-side{align-items:center;}
  .rank-num{font-size:44px;}
}

/* ============ 流程 ============ */
.steps{
  background:var(--paper-2);
  border-radius:var(--r-lg);
  padding:40px 24px;
  border:1px solid var(--line);
}
@media (min-width:1024px){.steps{padding:56px 48px;}}
.steps-grid{display:grid;gap:28px;margin-top:32px;}
@media (min-width:640px){.steps-grid{grid-template-columns:repeat(2,1fr);gap:32px;}}
@media (min-width:1024px){.steps-grid{grid-template-columns:repeat(4,1fr);}}
.step{border-top:1px solid #DED7CD;padding-top:20px;}
.step-no{
  font-size:12px;font-weight:700;letter-spacing:.14em;
  color:var(--brand);text-transform:uppercase;
}
.step h3{font-size:18px;font-weight:800;margin:10px 0 8px;letter-spacing:-.01em;}
.step p{font-size:14px;color:var(--muted);line-height:1.8;}

/* ============ 场景横滚 ============ */
.scroll-row{
  display:flex;gap:20px;overflow-x:auto;
  scroll-snap-type:x mandatory;
  padding:4px 20px 24px;
  margin:0 -20px;
  scrollbar-width:none;
}
.scroll-row::-webkit-scrollbar{display:none;}
@media (min-width:1024px){
  .scroll-row{padding:4px 32px 24px;margin:0 -32px;}
}
.scene-card{
  flex:0 0 82%;
  scroll-snap-align:start;
  background:var(--white);
  border:1px solid var(--line);
  border-radius:var(--r-md);
  overflow:hidden;
  box-shadow:var(--shadow-1);
  transition:transform .22s var(--ease),box-shadow .22s var(--ease);
}
@media (min-width:640px){.scene-card{flex:0 0 46%;}}
@media (min-width:1024px){.scene-card{flex:0 0 31%;}}
.scene-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);}
.scene-cover{aspect-ratio:16/9;overflow:hidden;background:var(--paper-2);}
.scene-cover img{width:100%;height:100%;object-fit:cover;transition:transform .3s var(--ease);}
.scene-card:hover .scene-cover img{transform:scale(1.04);}
.scene-body{padding:20px;}
.scene-body h3{font-size:18px;font-weight:700;}
.scene-body p{font-size:14px;color:var(--muted);margin-top:8px;line-height:1.8;}
.scene-body .tag{margin-top:14px;}

/* ============ FAQ ============ */
.faq-list{border-top:1px solid var(--line);}
.faq-item{border-bottom:1px solid var(--line);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:22px 0;text-align:left;
  font-size:17px;font-weight:700;letter-spacing:-.01em;
  transition:color .2s var(--ease);
}
.faq-q:hover{color:var(--brand);}
.faq-icon{
  flex:none;width:26px;height:26px;border-radius:50%;
  border:1px solid var(--line);
  display:flex;align-items:center;justify-content:center;
  font-size:15px;font-weight:700;color:var(--ink);
  transition:transform .24s var(--ease),background .24s var(--ease),border-color .24s var(--ease);
}
.faq-item.open .faq-icon{transform:rotate(45deg);background:var(--brand);border-color:var(--brand);color:#fff;}
.faq-a{
  max-height:0;overflow:hidden;
  transition:max-height .24s var(--ease);
}
.faq-a p{
  font-size:15px;color:var(--muted);line-height:1.8;
  padding:0 0 22px;max-width:760px;
}

/* ============ CTA ============ */
.cta-band{
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  background:var(--white);
  padding:28px 24px;
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:20px;
}
@media (min-width:1024px){.cta-band{padding:34px 40px;}}
.cta-band h2{font-size:22px;font-weight:800;letter-spacing:-.015em;}
@media (min-width:1024px){.cta-band h2{font-size:26px;}}
.cta-band p{font-size:14px;color:var(--muted);margin-top:6px;}

/* ============ 页脚 ============ */
.site-footer{
  background:var(--ink);color:var(--paper);
  padding:64px 0 32px;
  margin-top:24px;
}
.footer-grid{display:grid;gap:36px;}
@media (min-width:768px){.footer-grid{grid-template-columns:repeat(2,1fr);}}
@media (min-width:1024px){.footer-grid{grid-template-columns:1.6fr 1fr 1fr 1.3fr;gap:48px;}}
.footer-logo{
  display:inline-flex;align-items:center;gap:10px;
  font-size:18px;font-weight:900;letter-spacing:-.01em;
}
.footer-claim{font-size:14px;color:#B9B1A8;margin-top:14px;max-width:300px;line-height:1.8;}
.footer-col h3{
  font-size:13px;font-weight:600;letter-spacing:.1em;
  color:var(--weak);text-transform:uppercase;margin-bottom:16px;
}
.footer-col ul{display:flex;flex-direction:column;gap:10px;}
.footer-col a{
  font-size:15px;color:#E7E1DA;
  transition:color .2s var(--ease),transform .2s var(--ease);
  display:inline-block;
}
.footer-col a:hover{color:var(--brand);transform:translateX(2px);}
.footer-note{font-size:14px;color:#B9B1A8;line-height:1.85;max-width:320px;}
.footer-bottom{
  margin-top:48px;padding-top:24px;
  border-top:1px solid rgba(232,226,218,.16);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:13px;color:var(--weak);
}

@media (prefers-reduced-motion: reduce){
  *,*::before,*::after{
    animation-duration:.001ms !important;
    transition-duration:.001ms !important;
  }
  .scene-card:hover,.icon-btn:hover,.btn-primary:hover,.btn-outline:hover{transform:none;}
  .scene-card:hover .scene-cover img,.rank-row:hover .rank-thumb img{transform:none;}
  .rank-row:hover::before{transform:scaleY(0);}
}

/* roulang page: category3 */
:root{
    --brand:#FF4D2E;
    --brand-dark:#E63A1C;
    --ink:#14110F;
    --paper:#FAF8F5;
    --paper-2:#F0EBE5;
    --line:#E8E2DA;
    --lime:#C6F24E;
    --muted:#6B6259;
    --weak:#9A9188;
    --r-s:12px;
    --r-m:16px;
    --r-l:24px;
    --pill:999px;
    --shadow-1:0 1px 2px rgba(20,17,15,.05);
    --shadow-2:0 16px 40px -16px rgba(20,17,15,.18);
    --ease:cubic-bezier(.2,.7,.3,1);
  }
  *,*::before,*::after{box-sizing:border-box}
  html{-webkit-text-size-adjust:100%}
  body{
    margin:0;
    background:var(--paper);
    color:var(--ink);
    font-family:-apple-system,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",sans-serif;
    font-size:16px;
    line-height:1.85;
    -webkit-font-smoothing:antialiased;
    overflow-x:hidden;
  }
  body::before{
    content:"";
    position:fixed;
    inset:0;
    pointer-events:none;
    z-index:0;
    background-image:
      linear-gradient(to right, rgba(232,226,218,.6) 1px, transparent 1px),
      linear-gradient(to bottom, rgba(232,226,218,.6) 1px, transparent 1px);
    background-size:120px 120px;
    opacity:.5;
  }
  a{color:inherit;text-decoration:none}
  img{max-width:100%;display:block}
  button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
  h1,h2,h3,h4,p,ul,li,figure{margin:0;padding:0}
  ul{list-style:none}
  :focus-visible{outline:2px solid var(--brand);outline-offset:3px;border-radius:4px}

  .container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px;position:relative;z-index:1}
  @media (min-width:1024px){ .container{padding:0 32px} }

  /* ---------- header ---------- */
  .site-header{
    position:sticky;
    top:0;
    z-index:60;
    background:rgba(250,248,245,.86);
    backdrop-filter:saturate(150%) blur(12px);
    -webkit-backdrop-filter:saturate(150%) blur(12px);
    border-bottom:1px solid var(--line);
    transition:border-color .2s var(--ease), background .2s var(--ease);
  }
  .site-header.scrolled{border-bottom-color:#DAD2C8;background:rgba(250,248,245,.94)}
  .nav-inner{display:flex;align-items:center;justify-content:space-between;gap:20px;height:60px}
  @media (min-width:1024px){ .nav-inner{height:72px} }
  .logo{display:inline-flex;align-items:center;gap:10px;font-weight:900;font-size:17px;letter-spacing:-.01em;color:var(--ink);white-space:nowrap}
  @media (min-width:1024px){ .logo{font-size:18px} }
  .logo-mark{
    width:28px;height:28px;flex:0 0 28px;border-radius:9px;
    background:var(--brand);
    position:relative;
    box-shadow:inset 0 0 0 1px rgba(20,17,15,.06);
  }
  .logo-mark::after{
    content:"";position:absolute;left:8px;top:8px;width:12px;height:12px;border-radius:4px;
    background:var(--paper);opacity:.92;
  }
  .nav-links{display:none;align-items:center;gap:32px}
  @media (min-width:1024px){ .nav-links{display:flex} }
  .nav-links a{
    position:relative;
    font-size:15px;font-weight:600;color:var(--muted);
    transition:color .2s var(--ease);
  }
  .nav-links a:hover{color:var(--ink)}
  .nav-links a.active{color:var(--ink)}
  .nav-links a.active::after{
    content:"";position:absolute;left:0;right:0;bottom:-6px;height:2px;border-radius:2px;background:var(--brand);
  }
  .nav-right{display:flex;align-items:center;gap:10px}
  .btn-ghost-sm{
    display:none;
    align-items:center;height:40px;padding:0 18px;border-radius:var(--pill);
    border:1px solid var(--ink);font-size:14px;font-weight:600;color:var(--ink);
    transition:background .2s var(--ease),color .2s var(--ease),transform .2s var(--ease);
  }
  @media (min-width:900px){ .btn-ghost-sm{display:inline-flex} }
  .btn-ghost-sm:hover{background:var(--ink);color:var(--paper);transform:translateY(-1px)}
  .icon-btn{
    display:none;align-items:center;justify-content:center;
    width:40px;height:40px;border-radius:50%;border:1px solid var(--line);color:var(--muted);
    transition:border-color .2s var(--ease),color .2s var(--ease);
  }
  @media (min-width:1024px){ .icon-btn{display:inline-flex} }
  .icon-btn:hover{border-color:var(--ink);color:var(--ink)}
  .burger{display:inline-flex;flex-direction:column;justify-content:center;gap:5px;width:40px;height:40px;padding:0 9px;border-radius:var(--pill);border:1px solid var(--line)}
  @media (min-width:1024px){ .burger{display:none} }
  .burger i{display:block;height:1.5px;background:var(--ink);border-radius:2px;transition:transform .2s var(--ease),opacity .2s var(--ease)}
  .burger[aria-expanded="true"] i:nth-child(1){transform:translateY(6.5px) rotate(45deg)}
  .burger[aria-expanded="true"] i:nth-child(2){opacity:0}
  .burger[aria-expanded="true"] i:nth-child(3){transform:translateY(-6.5px) rotate(-45deg)}

  .mobile-drawer{
    position:fixed;inset:0;z-index:70;background:var(--paper);
    display:flex;flex-direction:column;justify-content:center;gap:6px;
    padding:88px 32px 48px;
    transform:translateY(-102%);
    visibility:hidden;
    transition:transform .28s var(--ease),visibility .28s var(--ease);
  }
  .mobile-drawer.open{transform:translateY(0);visibility:visible}
  .mobile-drawer a{
    font-size:24px;font-weight:800;color:var(--ink);padding:12px 0;
    border-bottom:1px solid var(--line);
    opacity:0;transform:translateY(8px);
    transition:opacity .3s var(--ease),transform .3s var(--ease),color .2s var(--ease);
  }
  .mobile-drawer.open a{opacity:1;transform:translateY(0)}
  .mobile-drawer.open a:nth-child(1){transition-delay:.04s}
  .mobile-drawer.open a:nth-child(2){transition-delay:.08s}
  .mobile-drawer.open a:nth-child(3){transition-delay:.12s}
  .mobile-drawer.open a:nth-child(4){transition-delay:.16s}
  .mobile-drawer.open a:nth-child(5){transition-delay:.2s}
  .mobile-drawer a:hover{color:var(--brand)}
  .drawer-close{
    position:absolute;top:16px;right:20px;width:44px;height:44px;border-radius:50%;
    border:1px solid var(--line);font-size:22px;line-height:1;display:flex;align-items:center;justify-content:center;color:var(--ink);
  }
  @media (min-width:1024px){ .mobile-drawer{display:none} }

  /* ---------- buttons ---------- */
  .btn-primary{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    height:48px;padding:0 28px;border-radius:var(--pill);
    background:var(--ink);color:var(--paper);font-size:15px;font-weight:700;
    transition:background .2s var(--ease),transform .2s var(--ease);
  }
  .btn-primary:hover{background:var(--brand);transform:translateY(-1px)}
  .btn-outline{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    height:48px;padding:0 26px;border-radius:var(--pill);
    border:1px solid var(--ink);color:var(--ink);font-size:15px;font-weight:700;background:transparent;
    transition:background .2s var(--ease),color .2s var(--ease),transform .2s var(--ease);
  }
  .btn-outline:hover{background:var(--ink);color:var(--paper);transform:translateY(-1px)}
  .btn-lime{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    height:48px;padding:0 26px;border-radius:var(--pill);
    background:var(--lime);color:var(--ink);font-size:15px;font-weight:800;
    transition:filter .2s var(--ease),box-shadow .2s var(--ease),transform .2s var(--ease);
  }
  .btn-lime:hover{filter:brightness(.94);box-shadow:0 0 0 4px rgba(198,242,78,.28);transform:translateY(-1px)}
  .btn-line-sm{
    display:inline-flex;align-items:center;gap:6px;height:40px;padding:0 20px;border-radius:var(--pill);
    border:1px solid var(--line);font-size:14px;font-weight:700;color:var(--ink);background:#fff;
    transition:border-color .2s var(--ease),color .2s var(--ease),transform .2s var(--ease);
  }
  .btn-line-sm:hover{border-color:var(--ink);color:var(--brand);transform:translateY(-1px)}

  /* ---------- shared bits ---------- */
  .eyebrow{
    display:inline-flex;align-items:center;gap:8px;height:24px;padding:0 12px;border-radius:var(--pill);
    background:rgba(255,77,46,.1);color:var(--brand);
    font-size:12px;font-weight:600;letter-spacing:.08em;
  }
  .badge{
    display:inline-flex;align-items:center;height:24px;padding:0 12px;border-radius:var(--pill);
    background:var(--paper-2);color:var(--ink);font-size:12px;font-weight:600;letter-spacing:.04em;
  }
  .badge-lime{background:var(--lime);color:var(--ink)}
  .section{padding:64px 0}
  @media (min-width:1024px){ .section{padding:104px 0} }
  .section-head{margin-bottom:32px}
  @media (min-width:1024px){ .section-head{margin-bottom:40px} }
  .section-head h2{font-size:28px;line-height:1.3;font-weight:800;letter-spacing:-.02em}
  @media (min-width:1024px){ .section-head h2{font-size:32px} }
  .section-head p{margin-top:12px;color:var(--muted);font-size:15px;max-width:720px}
  .divider{height:1px;background:var(--line);border:0;margin:0}

  .breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--weak);padding:24px 0 0}
  .breadcrumb a:hover{color:var(--ink)}
  .breadcrumb .sep{color:#CFC7BD}
  .breadcrumb .current{color:var(--ink);font-weight:600}

  /* ---------- hero ---------- */
  .hero{padding:32px 0 64px}
  @media (min-width:1024px){ .hero{padding:40px 0 96px} }
  .hero-grid{display:grid;grid-template-columns:1fr;gap:48px;align-items:center}
  @media (min-width:1024px){ .hero-grid{grid-template-columns:1.15fr .85fr;gap:64px} }
  .hero h1{
    margin-top:20px;
    font-size:34px;line-height:1.24;font-weight:900;letter-spacing:-.02em;
  }
  @media (min-width:768px){ .hero h1{font-size:40px} }
  @media (min-width:1024px){ .hero h1{font-size:48px} }
  .hero-sub{margin-top:18px;font-size:17px;color:var(--muted);max-width:520px}
  .hero-note{margin-top:12px;font-size:13px;color:var(--weak);letter-spacing:.02em}
  .hero-actions{margin-top:32px;display:flex;flex-wrap:wrap;gap:14px}
  .hero-visual{display:flex;justify-content:center}
  @media (min-width:1024px){ .hero-visual{justify-content:flex-end} }
  .hero-card{
    position:relative;width:100%;max-width:290px;aspect-ratio:9/16;
    border-radius:var(--r-l);overflow:hidden;background:var(--paper-2);
    border:1px solid var(--line);box-shadow:var(--shadow-1);
  }
  @media (min-width:1024px){ .hero-card{max-width:340px} }
  .hero-card img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
  .hero-card::after{
    content:"";position:absolute;inset:0;
    background:linear-gradient(to top,rgba(20,17,15,.76) 0%,rgba(20,17,15,0) 44%);
  }
  .hero-card-notch{position:absolute;top:14px;left:50%;transform:translateX(-50%);width:48px;height:4px;border-radius:var(--pill);background:rgba(250,248,245,.6);z-index:3}
  .hero-card-cap{position:absolute;left:20px;right:20px;bottom:20px;z-index:2;color:var(--paper);font-size:12px;font-weight:600;letter-spacing:.08em}

  /* ---------- compare ---------- */
  .compare-grid{display:grid;grid-template-columns:1fr;gap:40px}
  @media (min-width:1024px){
    .compare-grid{grid-template-columns:1fr 1px 1fr;gap:0 40px;align-items:stretch}
    .v-divider{background:var(--line);width:1px}
  }
  @media (max-width:1023px){ .v-divider{display:none} }
  .compare-card{
    display:flex;gap:24px;padding:26px;background:#fff;border:1px solid var(--line);
    border-radius:var(--r-m);box-shadow:var(--shadow-1);
    transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
  }
  .compare-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:#DCD4CA}
  .compare-thumb{
    position:relative;flex:0 0 148px;width:148px;aspect-ratio:9/16;border-radius:var(--r-s);overflow:hidden;background:var(--paper-2);
  }
  .compare-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .3s var(--ease)}
  .compare-card:hover .compare-thumb img{transform:scale(1.04)}
  .compare-thumb .badge{position:absolute;left:8px;top:8px;height:22px;padding:0 10px;font-size:11px;background:rgba(250,248,245,.92)}
  .compare-body{display:flex;flex-direction:column;min-width:0;flex:1}
  .compare-body h3{font-size:20px;font-weight:700;letter-spacing:-.01em}
  .compare-body .sub{margin-top:6px;font-size:13px;color:var(--weak)}
  .point-list{margin-top:16px;display:grid;gap:10px}
  .point-list li{position:relative;padding-left:18px;font-size:15px;color:var(--muted);line-height:1.7}
  .point-list li::before{content:"";position:absolute;left:0;top:9px;width:8px;height:8px;border-radius:2px;background:var(--brand)}
  .compare-body .action{margin-top:22px}
  @media (max-width:639px){
    .compare-card{flex-direction:column;gap:20px}
    .compare-thumb{flex:0 0 auto;width:140px}
  }

  /* ---------- stat strip ---------- */
  .stat-wrap{margin-top:56px}
  .stat-row{
    display:grid;grid-template-columns:repeat(2,minmax(0,1fr));
    border-top:1px solid var(--line);border-bottom:1px solid var(--line);
  }
  @media (min-width:900px){ .stat-row{grid-template-columns:repeat(4,minmax(0,1fr))} }
  .stat-cell{padding:22px 18px;border-right:1px solid var(--line);border-bottom:1px solid var(--line)}
  .stat-cell:nth-child(2n){border-right:0}
  .stat-cell:nth-child(n+3){border-bottom:0}
  @media (min-width:900px){
    .stat-cell{border-bottom:0}
    .stat-cell:nth-child(2n){border-right:1px solid var(--line)}
    .stat-cell:last-child{border-right:0}
  }
  .stat-label{font-size:12px;font-weight:600;letter-spacing:.08em;color:var(--weak)}
  .stat-value{margin-top:6px;font-size:20px;font-weight:800;letter-spacing:-.01em;color:var(--ink)}
  .stat-desc{margin-top:4px;font-size:13px;color:var(--muted)}

  /* ---------- scene list ---------- */
  .scene-list{border-top:1px solid var(--line)}
  .scene-item{
    position:relative;display:grid;grid-template-columns:56px 1fr;gap:16px;align-items:start;
    padding:24px 20px 24px 0;border-bottom:1px solid var(--line);
    transition:background .2s var(--ease);
  }
  .scene-item::before{
    content:"";position:absolute;left:-16px;top:0;bottom:0;width:3px;background:var(--brand);
    transform:translateX(-8px);opacity:0;transition:transform .22s var(--ease),opacity .22s var(--ease);
  }
  .scene-item:hover{background:#fff}
  .scene-item:hover::before{transform:translateX(0);opacity:1}
  .scene-num{font-size:22px;font-weight:200;color:var(--weak);letter-spacing:.02em;line-height:1.5}
  .scene-item:hover .scene-num{color:var(--brand)}
  .scene-item h3{font-size:18px;font-weight:700}
  .scene-item p{margin-top:6px;font-size:15px;color:var(--muted);max-width:680px}

  /* ---------- steps ---------- */
  .step-grid{display:grid;grid-template-columns:1fr;gap:28px}
  @media (min-width:640px){ .step-grid{grid-template-columns:repeat(2,minmax(0,1fr))} }
  @media (min-width:1024px){ .step-grid{grid-template-columns:repeat(4,minmax(0,1fr));gap:32px} }
  .step-card{position:relative;padding-top:22px;border-top:2px solid var(--ink)}
  .step-card .step-index{font-size:13px;font-weight:700;letter-spacing:.08em;color:var(--brand)}
  .step-card h3{margin-top:10px;font-size:18px;font-weight:700}
  .step-card p{margin-top:8px;font-size:15px;color:var(--muted)}

  /* ---------- faq ---------- */
  .faq-list{border-top:1px solid var(--line)}
  .faq-item{border-bottom:1px solid var(--line)}
  .faq-q{
    width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;
    padding:22px 0;text-align:left;font-size:17px;font-weight:700;color:var(--ink);
    transition:color .2s var(--ease);
  }
  .faq-q:hover{color:var(--brand)}
  .faq-icon{
    flex:0 0 26px;width:26px;height:26px;border-radius:50%;border:1px solid var(--line);
    display:flex;align-items:center;justify-content:center;font-size:16px;font-weight:600;color:var(--muted);
    transition:transform .2s var(--ease),border-color .2s var(--ease),color .2s var(--ease);
  }
  .faq-item.open .faq-icon{transform:rotate(45deg);border-color:var(--brand);color:var(--brand)}
  .faq-a{max-height:0;overflow:hidden;transition:max-height .24s var(--ease)}
  .faq-a p{padding:0 40px 22px 0;font-size:15px;line-height:1.8;color:var(--muted)}

  /* ---------- cta ---------- */
  .cta-band{border:1px solid var(--line);border-radius:var(--r-m);background:#fff;box-shadow:var(--shadow-1)}
  .cta-inner{display:flex;flex-direction:column;gap:22px;padding:32px 26px}
  @media (min-width:900px){
    .cta-inner{flex-direction:row;align-items:center;justify-content:space-between;gap:40px;padding:34px 40px}
  }
  .cta-inner h2{font-size:24px;font-weight:800;letter-spacing:-.02em}
  .cta-inner p{margin-top:8px;font-size:15px;color:var(--muted)}

  /* ---------- footer ---------- */
  .site-footer{background:var(--ink);color:var(--paper);margin-top:64px}
  @media (min-width:1024px){ .site-footer{margin-top:104px} }
  .footer-grid{display:grid;grid-template-columns:1fr;gap:40px;padding:64px 0 40px}
  @media (min-width:640px){ .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr))} }
  @media (min-width:1024px){ .footer-grid{grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:48px;padding:80px 0 48px} }
  .footer-logo{display:inline-flex;align-items:center;gap:10px;font-size:18px;font-weight:900;letter-spacing:-.01em}
  .footer-claim{margin-top:16px;font-size:15px;color:#C8C1B8;max-width:320px}
  .footer-col h3{font-size:13px;font-weight:600;letter-spacing:.08em;color:var(--weak);margin-bottom:16px}
  .footer-col ul{display:grid;gap:12px}
  .footer-col a{font-size:15px;color:#EDE8E1;transition:color .2s var(--ease),transform .2s var(--ease);display:inline-block}
  .footer-col a:hover{color:var(--brand);transform:translateX(2px)}
  .footer-note{font-size:14px;color:#C8C1B8;line-height:1.8}
  .footer-bottom{
    display:flex;flex-direction:column;gap:10px;
    border-top:1px solid rgba(250,248,245,.12);
    padding:22px 0 32px;font-size:13px;color:#9A9188;
  }
  @media (min-width:768px){ .footer-bottom{flex-direction:row;align-items:center;justify-content:space-between} }

  @media (prefers-reduced-motion: reduce){
    *{animation-duration:.01ms !important;transition-duration:.01ms !important}
    .compare-card:hover,.btn-primary:hover,.btn-outline:hover,.btn-lime:hover,.btn-line-sm:hover{transform:none}
    .compare-card:hover .compare-thumb img{transform:none}
    .scene-item:hover::before{transform:none}
    .mobile-drawer a{transform:none}
  }

/* roulang page: category4 */
:root{
  --brand:#FF4D2E;
  --brand-dark:#E63A1C;
  --ink:#14110F;
  --paper:#FAF8F5;
  --paper-2:#F0EBE5;
  --text:#14110F;
  --text-2:#6B6259;
  --text-3:#9A9188;
  --line:#E8E2DA;
  --lime:#C6F24E;
  --r-lg:24px;
  --r-md:16px;
  --r-sm:12px;
  --shadow-1:0 1px 2px rgba(20,17,15,.05);
  --shadow-2:0 16px 40px -16px rgba(20,17,15,.18);
  --ease:cubic-bezier(.2,.7,.3,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--paper);
  color:var(--text);
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font-family:inherit;cursor:pointer;border:0;background:none;color:inherit}
input,textarea{font-family:inherit;font-size:15px;color:var(--text)}
h1,h2,h3,h4,p,ul,ol{margin:0}
ul{padding:0;list-style:none}
:focus-visible{outline:2px solid var(--brand);outline-offset:3px;border-radius:4px}

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

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:70;
  background:rgba(250,248,245,.86);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line);
  transition:border-color .2s var(--ease);
}
.site-header.scrolled{border-bottom-color:#D8D0C6}
.nav-inner{height:60px;display:flex;align-items:center;justify-content:space-between;gap:16px}
@media(min-width:1024px){.nav-inner{height:72px}}
.logo{
  display:inline-flex;align-items:center;gap:10px;
  font-size:16px;font-weight:900;letter-spacing:-.01em;color:var(--ink);
  white-space:nowrap;
}
@media(min-width:1024px){.logo{font-size:17px}}
.logo-mark{
  width:28px;height:28px;flex:0 0 28px;border-radius:9px;
  background:var(--brand);
  position:relative;
}
.logo-mark::after{
  content:"";position:absolute;inset:8px 8px 8px 8px;border-radius:3px;background:var(--paper);
}
.nav-links{display:none}
@media(min-width:1024px){
  .nav-links{display:flex;align-items:center;gap:32px}
  .nav-links a{
    position:relative;font-size:15px;font-weight:600;color:var(--text-2);
    padding:4px 0;transition:color .18s var(--ease);
  }
  .nav-links a::after{
    content:"";position:absolute;left:0;bottom:-4px;height:2px;width:100%;
    background:var(--brand);transform:scaleX(0);transform-origin:left;
    transition:transform .22s var(--ease);
  }
  .nav-links a:hover{color:var(--ink)}
  .nav-links a:hover::after{transform:scaleX(1)}
  .nav-links a.active{color:var(--ink)}
  .nav-links a.active::after{transform:scaleX(1)}
}
.nav-right{display:flex;align-items:center;gap:10px}
.btn-ghost-sm{
  display:none;align-items:center;justify-content:center;
  height:38px;padding:0 20px;border-radius:999px;
  border:1px solid var(--ink);font-size:14px;font-weight:600;color:var(--ink);
  transition:background .18s var(--ease),color .18s var(--ease),transform .18s var(--ease);
}
@media(min-width:1024px){.btn-ghost-sm{display:inline-flex}}
.btn-ghost-sm:hover{background:var(--ink);color:var(--paper);transform:translateY(-1px)}
.icon-btn{
  width:38px;height:38px;border-radius:999px;border:1px solid var(--line);
  display:none;align-items:center;justify-content:center;color:var(--text-2);
  transition:color .18s var(--ease),border-color .18s var(--ease),transform .18s var(--ease);
}
@media(min-width:1024px){.icon-btn{display:inline-flex}}
.icon-btn:hover{color:var(--ink);border-color:var(--ink);transform:translateY(-1px)}
.burger{
  display:inline-flex;flex-direction:column;justify-content:center;gap:5px;
  width:40px;height:40px;padding:0 9px;border-radius:10px;
}
@media(min-width:1024px){.burger{display:none}}
.burger i{display:block;height:1.6px;background:var(--ink);border-radius:2px;transition:transform .2s var(--ease),opacity .2s var(--ease)}
.burger[aria-expanded="true"] i:nth-child(1){transform:translateY(6.6px) rotate(45deg)}
.burger[aria-expanded="true"] i:nth-child(2){opacity:0}
.burger[aria-expanded="true"] i:nth-child(3){transform:translateY(-6.6px) rotate(-45deg)}

/* mobile drawer */
.drawer{
  position:fixed;inset:0;z-index:90;background:var(--paper);
  transform:translateY(-100%);opacity:0;visibility:hidden;
  transition:transform .32s var(--ease),opacity .28s var(--ease),visibility .32s;
  display:flex;flex-direction:column;padding:20px;
}
.drawer.open{transform:translateY(0);opacity:1;visibility:visible}
.drawer-top{display:flex;align-items:center;justify-content:space-between;height:44px}
.drawer-close{width:40px;height:40px;border-radius:999px;border:1px solid var(--line);font-size:20px;line-height:1;color:var(--ink);display:flex;align-items:center;justify-content:center}
.drawer nav{margin-top:40px;display:flex;flex-direction:column;gap:6px}
.drawer nav a{
  font-size:24px;font-weight:800;letter-spacing:-.01em;padding:12px 0;
  border-bottom:1px solid var(--line);
  opacity:0;transform:translateY(10px);
  transition:opacity .3s var(--ease),transform .3s var(--ease),color .18s var(--ease);
}
.drawer.open nav a{opacity:1;transform:translateY(0)}
.drawer.open nav a:nth-child(1){transition-delay:.06s}
.drawer.open nav a:nth-child(2){transition-delay:.10s}
.drawer.open nav a:nth-child(3){transition-delay:.14s}
.drawer.open nav a:nth-child(4){transition-delay:.18s}
.drawer.open nav a:nth-child(5){transition-delay:.22s}
.drawer nav a.active{color:var(--brand)}
.drawer-foot{margin-top:auto;font-size:13px;color:var(--text-3)}

/* ---------- generic ---------- */
.section{padding:64px 0}
@media(min-width:1024px){.section{padding:104px 0}}
.section-sm{padding:48px 0}
@media(min-width:1024px){.section-sm{padding:72px 0}}
.eyebrow{
  font-size:12px;font-weight:600;letter-spacing:.08em;text-transform:uppercase;
  color:var(--text-3);
}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:32px}
@media(min-width:1024px){.section-head{margin-bottom:40px}}
.h2{font-size:28px;font-weight:800;letter-spacing:-.02em;line-height:1.25}
@media(min-width:1024px){.h2{font-size:32px}}
.link-more{
  font-size:14px;font-weight:600;color:var(--text-2);display:inline-flex;align-items:center;gap:6px;
  border-bottom:1px solid var(--line);padding-bottom:2px;transition:color .18s var(--ease),border-color .18s var(--ease);
  white-space:nowrap;
}
.link-more:hover{color:var(--brand);border-color:var(--brand)}
.link-more span{transition:transform .2s var(--ease)}
.link-more:hover span{transform:translateX(4px)}
.rule{height:1px;background:var(--line);border:0}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 28px;border-radius:999px;
  font-size:15px;font-weight:700;letter-spacing:.01em;
  transition:background .18s var(--ease),color .18s var(--ease),transform .18s var(--ease),box-shadow .18s var(--ease),border-color .18s var(--ease);
}
.btn-primary{background:var(--ink);color:var(--paper)}
.btn-primary:hover{background:var(--brand);transform:translateY(-1px)}
.btn-outline{border:1px solid var(--ink);color:var(--ink);background:transparent}
.btn-outline:hover{background:var(--ink);color:var(--paper);transform:translateY(-1px)}
.btn-lime{background:var(--lime);color:var(--ink)}
.btn-lime:hover{filter:brightness(.95);box-shadow:0 0 0 4px rgba(198,242,78,.28);transform:translateY(-1px)}
.btn-sm{height:40px;padding:0 20px;font-size:14px}

.tag{
  display:inline-flex;align-items:center;height:24px;padding:0 12px;border-radius:999px;
  font-size:12px;font-weight:600;background:var(--paper-2);color:var(--ink);
}
.tag-brand{background:rgba(255,77,46,.12);color:var(--brand)}
.badge{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:999px;
  font-size:12px;font-weight:600;letter-spacing:.02em;background:rgba(20,17,15,.06);color:var(--ink);
}

/* ---------- breadcrumb ---------- */
.crumb{padding:20px 0 0;font-size:13px;color:var(--text-3)}
.crumb a{transition:color .18s var(--ease)}
.crumb a:hover{color:var(--brand)}
.crumb .sep{margin:0 8px;color:var(--line)}
.crumb .now{color:var(--ink);font-weight:600}

/* ---------- hero ---------- */
.hero{position:relative;overflow:hidden;padding:40px 0 64px}
.hero::before{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(to right,rgba(232,226,218,.6) 1px,transparent 1px),
                   linear-gradient(to bottom,rgba(232,226,218,.6) 1px,transparent 1px);
  background-size:64px 64px;
  opacity:.55;pointer-events:none;
}
.hero::after{
  content:"";position:absolute;right:-140px;bottom:-160px;width:420px;height:420px;border-radius:50%;
  background:rgba(255,77,46,.06);pointer-events:none;
}
.hero-inner{position:relative;z-index:1;display:grid;grid-template-columns:1fr;gap:40px}
@media(min-width:1024px){
  .hero-inner{grid-template-columns:7fr 5fr;gap:48px;align-items:center}
  .hero{padding:64px 0 96px}
}
.hero h1{
  font-size:34px;font-weight:900;letter-spacing:-.02em;line-height:1.18;
}
@media(min-width:640px){.hero h1{font-size:40px}}
@media(min-width:1024px){.hero h1{font-size:48px}}
.hero-sub{margin-top:18px;font-size:16px;color:var(--text-2);max-width:560px}
@media(min-width:1024px){.hero-sub{font-size:17px}}
.hero-scope{
  margin-top:14px;font-size:13px;color:var(--text-3);
  padding-left:14px;border-left:2px solid var(--brand);line-height:1.7;
}
.hero-actions{margin-top:28px;display:flex;flex-wrap:wrap;gap:12px}
.hero-stats{margin-top:36px;display:grid;grid-template-columns:repeat(3,1fr);gap:16px;border-top:1px solid var(--line);padding-top:24px}
.hero-stats .num{font-size:24px;font-weight:800;letter-spacing:-.02em;line-height:1.2}
@media(min-width:1024px){.hero-stats .num{font-size:28px}}
.hero-stats .lbl{font-size:12px;color:var(--text-3);margin-top:4px}
.hero-card{
  position:relative;border:1px solid var(--line);border-radius:var(--r-lg);
  background:#fff;padding:16px;box-shadow:var(--shadow-1);
}
.hero-card img{
  width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--r-md);background:rgba(255,77,46,.08);
}
.hero-card .cap{margin-top:12px;font-size:13px;color:var(--text-2);line-height:1.7}

/* quick index */
.quickbar{
  display:flex;gap:10px;overflow-x:auto;scroll-snap-type:x mandatory;
  padding-bottom:4px;margin-top:8px;
  scrollbar-width:none;
}
.quickbar::-webkit-scrollbar{display:none}
.quickbar a{
  flex:0 0 auto;scroll-snap-align:start;
  display:inline-flex;align-items:center;height:36px;padding:0 18px;border-radius:999px;
  border:1px solid var(--line);background:#fff;font-size:14px;font-weight:600;color:var(--text-2);
  transition:border-color .18s var(--ease),color .18s var(--ease),transform .18s var(--ease);
}
.quickbar a:hover{border-color:var(--ink);color:var(--ink);transform:translateY(-2px)}

/* ---------- FAQ ---------- */
.faq-wrap{display:grid;grid-template-columns:1fr;gap:32px}
@media(min-width:1024px){.faq-wrap{grid-template-columns:4fr 8fr;gap:48px;align-items:start}}
.faq-aside h2{font-size:28px;font-weight:800;letter-spacing:-.02em;line-height:1.25}
.faq-aside p{margin-top:14px;font-size:15px;color:var(--text-2)}
.faq-aside .aside-note{
  margin-top:24px;padding:18px;border:1px solid var(--line);border-radius:var(--r-md);background:#fff;
  font-size:13px;color:var(--text-2);line-height:1.8;
}
.faq-list{border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-q{
  width:100%;display:flex;align-items:flex-start;justify-content:space-between;gap:20px;
  padding:22px 0;text-align:left;font-size:17px;font-weight:700;color:var(--ink);
  transition:color .18s var(--ease);
}
.faq-q:hover{color:var(--brand)}
.faq-q .mark{
  flex:0 0 22px;width:22px;height:22px;margin-top:4px;position:relative;
  transition:transform .24s var(--ease);
}
.faq-q .mark::before,.faq-q .mark::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--brand);border-radius:2px;
  transform:translate(-50%,-50%);
}
.faq-q .mark::before{width:14px;height:2px}
.faq-q .mark::after{width:2px;height:14px;transition:transform .24s var(--ease),opacity .24s var(--ease)}
.faq-item.open .faq-q .mark{transform:rotate(180deg)}
.faq-item.open .faq-q .mark::after{transform:translate(-50%,-50%) scaleY(0);opacity:0}
.faq-a{
  max-height:0;overflow:hidden;transition:max-height .2s var(--ease);
}
.faq-a p{padding:0 40px 22px 0;font-size:15px;line-height:1.85;color:var(--text-2)}
@media(max-width:640px){.faq-a p{padding-right:0}}

/* ---------- word of mouth ---------- */
.voice-section{background:var(--ink);color:var(--paper);padding:72px 0}
@media(min-width:1024px){.voice-section{padding:96px 0}}
.voice-section .h2{color:var(--paper)}
.voice-section .eyebrow{color:#9A9188}
.voice-grid{display:grid;grid-template-columns:1fr;gap:20px}
@media(min-width:768px){
  .voice-grid{grid-template-columns:1fr 1fr;gap:24px}
  .voice-col:nth-child(2){margin-top:24px}
}
.voice-card{
  background:#1F1B18;border:1px solid rgba(232,226,218,.12);border-radius:var(--r-md);
  padding:24px;transition:transform .2s var(--ease),border-color .2s var(--ease);
}
.voice-card:hover{transform:translateY(-4px);border-color:rgba(255,77,46,.5)}
.voice-top{display:flex;align-items:center;gap:12px}
.avatar{
  width:40px;height:40px;border-radius:999px;flex:0 0 40px;
  display:flex;align-items:center;justify-content:center;
  font-size:15px;font-weight:800;color:var(--ink);
}
.voice-name{font-size:15px;font-weight:700;color:var(--paper)}
.voice-src{font-size:12px;color:#9A9188;margin-top:2px}
.dots{display:flex;gap:4px;margin-top:16px}
.dots i{width:8px;height:8px;border-radius:2px;background:rgba(232,226,218,.22)}
.dots i.on{background:var(--brand)}
.voice-text{margin-top:14px;font-size:15px;line-height:1.8;color:#E6DFD7}

/* ---------- submit form ---------- */
.form-card{
  border:1px solid var(--line);border-radius:var(--r-lg);background:#fff;
  padding:28px;box-shadow:var(--shadow-1);
}
@media(min-width:1024px){.form-card{padding:40px}}
.field{margin-bottom:20px}
.field label{display:block;font-size:13px;font-weight:600;color:var(--text-2);margin-bottom:8px}
.field input,.field textarea{
  width:100%;border:1px solid var(--line);border-radius:var(--r-sm);
  padding:12px 14px;background:var(--paper);min-height:48px;
  transition:border-color .18s var(--ease),box-shadow .18s var(--ease),background .18s var(--ease);
}
.field textarea{min-height:132px;resize:vertical;line-height:1.8}
.field input:focus,.field textarea:focus{
  outline:none;background:#fff;border-color:var(--ink);box-shadow:0 0 0 2px rgba(255,77,46,.45);
}
.form-hint{font-size:13px;color:var(--text-3);margin-top:4px}
.form-msg{margin-top:16px;font-size:14px;font-weight:600;color:var(--brand);display:none}
.form-msg.show{display:block}
.form-grid{display:grid;grid-template-columns:1fr;gap:0 24px}
@media(min-width:768px){.form-grid{grid-template-columns:1fr 1fr}}

/* ---------- CTA band ---------- */
.cta-band{
  border:1px solid var(--line);border-radius:var(--r-lg);background:#fff;
  padding:28px;display:flex;flex-direction:column;gap:20px;align-items:flex-start;
  box-shadow:var(--shadow-1);
}
@media(min-width:1024px){
  .cta-band{flex-direction:row;align-items:center;justify-content:space-between;padding:32px 40px}
}
.cta-band h2{font-size:20px;font-weight:800;letter-spacing:-.01em}
@media(min-width:1024px){.cta-band h2{font-size:24px}}
.cta-band p{margin-top:8px;font-size:15px;color:var(--text-2)}

/* ---------- footer ---------- */
.site-footer{background:var(--ink);color:var(--paper);padding:64px 0 28px;margin-top:0}
@media(min-width:1024px){.site-footer{padding:80px 0 32px}}
.footer-grid{display:grid;grid-template-columns:1fr 1fr;gap:36px 24px}
@media(min-width:1024px){.footer-grid{grid-template-columns:5fr 3fr 3fr 4fr;gap:24px}}
.footer-logo{display:inline-flex;align-items:center;gap:10px;font-size:17px;font-weight:900;color:var(--paper)}
.footer-logo .logo-mark{background:var(--brand)}
.footer-logo .logo-mark::after{background:var(--ink)}
.footer-claim{margin-top:16px;font-size:15px;color:#B9B2A9;max-width:340px;line-height:1.8}
.footer-col h3{font-size:13px;font-weight:600;color:#9A9188;letter-spacing:.04em;margin-bottom:16px}
.footer-col ul li{margin-bottom:10px}
.footer-col a{font-size:15px;color:#E6DFD7;transition:color .18s var(--ease),transform .18s var(--ease);display:inline-block}
.footer-col a:hover{color:var(--brand);transform:translateX(2px)}
.footer-note{font-size:14px;color:#B9B2A9;line-height:1.85}
.footer-bottom{
  margin-top:48px;padding-top:20px;border-top:1px solid rgba(232,226,218,.14);
  display:flex;flex-direction:column;gap:8px;font-size:13px;color:#9A9188;
}
@media(min-width:768px){.footer-bottom{flex-direction:row;align-items:center;justify-content:space-between}}

/* ---------- motion ---------- */
@media(prefers-reduced-motion:reduce){
  *{animation:none !important;transition-duration:.001s !important}
  .voice-card:hover,.btn:hover,.quickbar a:hover,.link-more:hover span{transform:none !important}
}