/* roulang page: index */
:root{
--ink:#14161A;
--ink-2:#2A2D33;
--dark:#101215;
--paper:#F6F4EF;
--surface:#FFFFFF;
--line:#E4E0D8;
--muted:#6E6B66;
--brand:#B4E33D;
--brand-soft:rgba(180,227,61,.16);
--accent:#FF5A36;
--danger:#E5484D;
--r-card:12px;
--r-btn:8px;
--r-pill:999px;
--shadow-1:0 1px 2px rgba(20,22,26,.06);
--shadow-2:0 12px 32px rgba(20,22,26,.10);
--ease:cubic-bezier(.2,.7,.3,1);
--font:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
--mono:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
margin:0;
font-family:var(--font);
font-size:17px;
line-height:1.85;
color:var(--ink-2);
background:var(--paper);
-webkit-font-smoothing:antialiased;
overflow-x:hidden;
}
body.no-scroll{overflow:hidden}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
button,input,textarea{font:inherit;color:inherit}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;color:var(--ink);letter-spacing:-.01em}
p{margin:0}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:4px}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}
.wrap{width:100%;max-width:1200px;margin:0 auto;padding:0 32px}

/* ---------- buttons ---------- */
.btn{
display:inline-flex;align-items:center;justify-content:center;gap:8px;
min-height:46px;padding:12px 24px;border-radius:var(--r-btn);
font-size:.97rem;font-weight:700;line-height:1.2;
border:1px solid transparent;cursor:pointer;
transition:background-color .2s var(--ease),color .2s var(--ease),transform .2s var(--ease),border-color .2s var(--ease);
}
.btn svg{transition:transform .2s var(--ease)}
.btn:hover svg{transform:translateX(4px)}
.btn-primary{background:var(--ink);color:var(--paper)}
.btn-primary:hover{background:var(--brand);color:var(--ink)}
.btn-ghost{background:transparent;border-color:var(--ink);color:var(--ink)}
.btn-ghost:hover{background:var(--ink);color:var(--paper)}
.btn-brand{background:var(--brand);color:var(--ink)}
.btn-brand:hover{background:#c7f158;color:var(--ink)}
.btn-sm{min-height:40px;padding:9px 18px;font-size:.9rem}
.icon-btn{
display:inline-flex;align-items:center;justify-content:center;
width:44px;height:44px;border-radius:var(--r-btn);
border:1px solid var(--line);background:var(--surface);color:var(--ink);
cursor:pointer;transition:background-color .2s var(--ease),border-color .2s var(--ease),color .2s var(--ease);
}
.icon-btn:hover{background:var(--ink);color:var(--paper);border-color:var(--ink)}

/* ---------- header ---------- */
.site-header{
position:sticky;top:0;z-index:70;
background:rgba(246,244,239,.92);
backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);
border-bottom:1px solid var(--line);
transition:box-shadow .25s var(--ease),background-color .25s var(--ease);
}
.site-header.is-scrolled{box-shadow:0 6px 24px rgba(20,22,26,.07)}
.header-inner{display:flex;align-items:center;gap:28px;height:72px;transition:height .25s var(--ease)}
.site-header.is-scrolled .header-inner{height:60px}
.brand{display:flex;align-items:center;gap:10px;flex:none;color:var(--ink)}
.brand-mark{
width:34px;height:34px;border-radius:10px;background:var(--ink);color:var(--brand);
display:grid;place-items:center;font-size:.8rem;font-weight:900;letter-spacing:.02em;font-family:var(--mono);
}
.brand-name{font-size:1.02rem;font-weight:800;letter-spacing:-.01em;white-space:nowrap}
.nav-main{display:flex;align-items:center;gap:24px;margin:0 auto}
.nav-main a{
position:relative;font-size:.94rem;color:var(--ink-2);padding:8px 0;
transition:color .2s var(--ease);
}
.nav-main a::after{
content:"";position:absolute;left:0;bottom:2px;width:0;height:2px;background:var(--brand);
transition:width .2s var(--ease);
}
.nav-main a:hover{color:var(--ink)}
.nav-main a:hover::after{width:100%}
.nav-main a.is-active{color:var(--ink);font-weight:700}
.nav-main a.is-active::after{width:100%}
.header-actions{display:flex;align-items:center;gap:12px;flex:none}
.burger{display:none}
.search-panel{border-top:1px solid var(--line);background:var(--surface);padding:18px 0}
.search-form{display:flex;gap:12px;align-items:center}
.search-form input{
flex:1;min-height:46px;padding:10px 16px;border-radius:var(--r-btn);
border:1px solid var(--line);background:var(--paper);color:var(--ink);
transition:border-color .2s var(--ease),background-color .2s var(--ease);
}
.search-form input:focus{outline:none;border-color:var(--brand);background:var(--surface)}
.search-hint{margin-top:10px;font-size:13px;color:var(--muted);letter-spacing:.02em}

/* ---------- drawer ---------- */
.drawer-mask{
position:fixed;inset:0;background:rgba(16,18,21,.45);opacity:0;pointer-events:none;
transition:opacity .28s var(--ease);z-index:88;
}
.drawer-mask.is-open{opacity:1;pointer-events:auto}
.nav-drawer{
position:fixed;top:0;right:0;bottom:0;width:min(88vw,380px);
background:var(--surface);z-index:90;padding:22px;overflow-y:auto;
display:flex;flex-direction:column;gap:20px;
transform:translateX(105%);transition:transform .28s var(--ease);
box-shadow:-8px 0 32px rgba(20,22,26,.12);
}
.nav-drawer.is-open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;gap:16px}
.drawer-nav{display:flex;flex-direction:column}
.drawer-nav a{
display:flex;align-items:center;height:48px;border-bottom:1px solid var(--line);
font-size:1rem;color:var(--ink-2);
}
.drawer-nav a.is-active{color:var(--ink);font-weight:700;box-shadow:inset 3px 0 0 var(--brand);padding-left:12px}
.drawer-foot{margin-top:auto;display:flex;flex-direction:column;gap:12px}
.drawer-foot .btn{width:100%}
.drawer-foot p{font-size:13px;color:var(--muted)}

/* ---------- section basics ---------- */
.section{padding:104px 0}
.section--tight{padding:80px 0}
.section--dark{background:var(--dark);color:#F6F4EF}
.section--dark h2,.section--dark h3{color:#F6F4EF}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:28px;margin-bottom:44px}
.section-head h2{position:relative;padding-left:18px;font-size:clamp(1.6rem,3vw,2.4rem);font-weight:700;line-height:1.2}
.section-head h2::before{
content:"";position:absolute;left:0;top:.22em;bottom:.22em;width:4px;border-radius:2px;background:var(--brand);
}
.section-head p{max-width:640px;margin-top:12px;font-size:1.02rem;color:var(--muted);line-height:1.75}
.section-head__link{font-size:.94rem;font-weight:700;color:var(--ink);white-space:nowrap;border-bottom:2px solid var(--brand);padding-bottom:2px}
.section-head__link:hover{color:var(--accent);border-color:var(--accent)}
.section--dark .section-head p{color:#A9A69F}

/* ---------- hero ---------- */
.hero{position:relative;padding:76px 0 92px;overflow:hidden}
.hero::before{
content:"";position:absolute;top:-220px;right:-140px;width:560px;height:560px;border-radius:50%;
background:radial-gradient(circle,rgba(180,227,61,.36),rgba(180,227,61,0) 68%);
pointer-events:none;
}
.hero-grid{position:relative;display:grid;grid-template-columns:7fr 5fr;gap:64px;align-items:center}
.pill{
display:inline-flex;align-items:center;gap:8px;
padding:6px 16px;border-radius:var(--r-pill);
background:var(--surface);border:1px solid var(--line);
font-size:13px;letter-spacing:.06em;color:var(--ink-2);
}
.pill i{width:7px;height:7px;border-radius:50%;background:var(--accent);display:block}
.hero h1{
margin:22px 0 20px;
font-size:clamp(2.4rem,5.2vw,4.25rem);
font-weight:800;line-height:1.08;letter-spacing:-.02em;
}
.hero h1 em{font-style:normal;box-shadow:inset 0 -0.22em 0 var(--brand-soft)}
.hero-sub{font-size:clamp(1.05rem,1.6vw,1.25rem);line-height:1.7;color:var(--muted);max-width:34em}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-top:34px}
.hero-note{margin-top:22px;font-size:.9rem;color:var(--muted);letter-spacing:.02em;font-variant-numeric:tabular-nums}
.hero-media{position:relative}
.hero-media img{
width:100%;aspect-ratio:1/1;object-fit:cover;
border-radius:16px;border:1px solid var(--line);
}
.hero-media::after{
content:"";position:absolute;left:-18px;bottom:-18px;width:104px;height:104px;
border-radius:16px;background:var(--brand);z-index:-1;
}
.hero-badge{
position:absolute;right:-14px;bottom:26px;
background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
box-shadow:var(--shadow-2);padding:14px 18px;min-width:158px;
}
.hero-badge strong{display:block;font-family:var(--mono);font-size:1.35rem;color:var(--ink);line-height:1.2}
.hero-badge span{font-size:13px;color:var(--muted)}

/* ---------- stat band ---------- */
.stat-band{background:var(--ink);color:#F6F4EF;padding:64px 0}
.stat-band .wrap{display:grid;grid-template-columns:1.15fr 2fr;gap:56px;align-items:center}
.stat-band h2{font-size:clamp(1.4rem,2.4vw,2rem);font-weight:700;line-height:1.35;color:#F6F4EF;letter-spacing:-.01em}
.stat-band .claim-sub{margin-top:14px;font-size:1rem;color:#A9A69F;line-height:1.75}
.stat-row{display:grid;grid-template-columns:repeat(3,1fr);gap:32px}
.stat-item{border-left:1px solid rgba(255,255,255,.10);padding-left:24px}
.stat-item strong{
display:block;font-family:var(--mono);font-size:clamp(1.6rem,3vw,2.3rem);
font-weight:700;color:var(--brand);letter-spacing:-.02em;font-variant-numeric:tabular-nums;
}
.stat-item span{display:block;margin-top:8px;font-size:.95rem;color:#A9A69F;line-height:1.6}

/* ---------- story ---------- */
.story-row{display:grid;grid-template-columns:1fr 1fr;gap:64px;align-items:center}
.story-row + .story-row{margin-top:88px}
.story-row--reverse .story-media{order:-1}
.story-num{font-family:var(--mono);font-size:.95rem;letter-spacing:.18em;color:var(--accent)}
.story-text h3{margin:14px 0 16px;font-size:clamp(1.35rem,2.2vw,1.75rem);font-weight:700;line-height:1.35}
.story-text p{font-size:1.02rem;line-height:1.85;color:var(--ink-2)}
.story-text p + p{margin-top:16px}
.story-list{margin-top:22px;display:flex;flex-direction:column;gap:12px}
.story-list li{position:relative;padding-left:22px;font-size:.98rem;color:var(--ink-2)}
.story-list li::before{content:"";position:absolute;left:0;top:.72em;width:10px;height:2px;background:var(--brand)}
.story-media img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--r-card);border:1px solid var(--line)}

/* ---------- feature cards ---------- */
.feature-grid{display:grid;grid-template-columns:2fr 1fr;gap:28px}
.card{
background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
transition:transform .24s var(--ease),box-shadow .24s var(--ease),border-color .24s var(--ease);
}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:#d9d4c9}
.feature-lead{overflow:hidden}
.feature-lead > a{display:grid;grid-template-columns:1fr 1fr;height:100%}
.feature-lead__media img{width:100%;height:100%;aspect-ratio:16/11;object-fit:cover;transition:transform .24s var(--ease)}
.feature-lead:hover .feature-lead__media img{transform:scale(1.03)}
.feature-lead__body{padding:32px;display:flex;flex-direction:column;gap:14px;justify-content:center}
.feature-lead__body h3{font-size:1.3rem;font-weight:700;line-height:1.35}
.feature-lead__body p{font-size:.98rem;color:var(--muted);line-height:1.75}
.feature-side{display:grid;grid-template-rows:1fr 1fr;gap:28px}
.feature-mini{overflow:hidden}
.feature-mini > a{display:flex;flex-direction:column;height:100%}
.feature-mini__media img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .24s var(--ease)}
.feature-mini:hover .feature-mini__media img{transform:scale(1.03)}
.feature-mini__body{padding:22px 24px 24px;display:flex;flex-direction:column;gap:10px;flex:1}
.feature-mini__body h3{font-size:1.08rem;font-weight:600;line-height:1.4}
.feature-mini__body p{font-size:.92rem;color:var(--muted);line-height:1.7}
.tag{
display:inline-flex;align-items:center;padding:3px 12px;border-radius:var(--r-pill);
border:1px solid rgba(255,90,54,.38);background:rgba(255,90,54,.06);
color:var(--accent);font-size:13px;letter-spacing:.06em;
}
.link-more{margin-top:auto;padding-top:8px;font-size:.92rem;font-weight:700;color:var(--ink);display:inline-flex;align-items:center;gap:6px}
.card:hover .link-more{color:var(--accent)}

/* ---------- news list ---------- */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:26px}
.news-card{padding:0}
.news-card > a{display:flex;flex-direction:column;height:100%;padding:26px 28px 28px}
.news-card__meta{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:16px}
.news-card__meta time{font-size:13px;color:var(--muted);font-variant-numeric:tabular-nums;letter-spacing:.02em}
.news-card__title{font-size:1.08rem;font-weight:600;line-height:1.45;
display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-card__desc{margin-top:12px;font-size:.94rem;line-height:1.75;color:var(--muted);
display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-card__more{margin-top:auto;padding-top:18px;font-size:.9rem;font-weight:700;color:var(--ink);display:inline-flex;align-items:center;gap:6px}
.news-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2)}
.news-card:hover .news-card__more{color:var(--accent)}
.news-card:hover .news-card__title{box-shadow:inset 0 -.55em 0 var(--brand-soft)}
.empty-state{
grid-column:1/-1;display:flex;flex-direction:column;align-items:center;gap:14px;
padding:56px 24px;border:1px dashed var(--line);border-radius:var(--r-card);background:var(--surface);text-align:center;
}
.empty-state svg{color:var(--muted)}
.empty-state p{color:var(--muted);font-size:.98rem}

/* ---------- voices ---------- */
.voice-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:26px}
.voice-card{padding:28px;display:flex;flex-direction:column;gap:18px}
.voice-top{display:flex;align-items:center;gap:14px}
.voice-top img{width:46px;height:46px;border-radius:50%;object-fit:cover;border:1px solid var(--line)}
.voice-top strong{display:block;font-size:.98rem;color:var(--ink);font-weight:700}
.voice-top span{display:block;font-size:13px;color:var(--muted)}
.voice-card p{font-size:.98rem;line-height:1.8;color:var(--ink-2);
display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.voice-mark{font-family:var(--mono);font-size:1.6rem;color:var(--brand);line-height:1}

/* ---------- faq ---------- */
.faq-wrap{max-width:800px;margin:0 auto}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item:first-child{border-top:1px solid var(--line)}
.faq-item summary{
list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:20px;
padding:22px 0;transition:color .2s var(--ease);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-q{font-size:1.06rem;font-weight:600;color:var(--ink);line-height:1.55}
.faq-icon{
flex:none;width:22px;height:22px;position:relative;
transition:transform .24s var(--ease),color .24s var(--ease);color:var(--ink-2);
}
.faq-icon::before,.faq-icon::after{content:"";position:absolute;background:currentColor;border-radius:2px}
.faq-icon::before{left:0;top:10px;width:22px;height:2px}
.faq-icon::after{left:10px;top:0;width:2px;height:22px}
.faq-item[open] .faq-icon{transform:rotate(45deg);color:var(--accent)}
.faq-a{padding:0 44px 24px 0;font-size:1rem;line-height:1.8;color:var(--ink-2)}

/* ---------- cta band ---------- */
.cta-band{background:var(--dark);color:#F6F4EF;padding:84px 0}
.cta-inner{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}
.cta-text h2{font-size:clamp(1.5rem,3vw,2.2rem);font-weight:700;line-height:1.25;color:#F6F4EF}
.cta-text p{margin-top:16px;color:#A9A69F;font-size:1rem;line-height:1.8}
.cta-form{display:grid;grid-template-columns:1fr auto;gap:14px;align-items:end}
.cta-form input{
grid-column:1;background:transparent;border:none;border-bottom:1px solid rgba(255,255,255,.24);
padding:14px 2px;color:#F6F4EF;font-size:1rem;transition:border-color .2s var(--ease);
}
.cta-form input::placeholder{color:#7d7a74}
.cta-form input:focus{outline:none;border-bottom-color:var(--brand)}
.cta-form .btn{grid-column:2}
.form-note{grid-column:1/-1;font-size:13px;color:#A9A69F;min-height:18px;letter-spacing:.02em}
.form-note.is-ok{color:var(--brand)}
.form-note.is-err{color:#E5484D}

/* ---------- footer ---------- */
.site-footer{background:var(--dark);color:#F6F4EF;padding:72px 0 0;border-top:1px solid rgba(255,255,255,.10)}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:48px;padding-bottom:56px}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.footer-brand .brand-mark{background:var(--brand);color:var(--ink)}
.footer-brand span{font-weight:800;font-size:1rem;color:#F6F4EF}
.footer-col h3{font-size:.95rem;font-weight:700;color:#F6F4EF;margin-bottom:18px;letter-spacing:.04em}
.footer-col p{font-size:.92rem;color:#A9A69F;line-height:1.8}
.footer-col ul{display:flex;flex-direction:column;gap:12px}
.footer-col a{font-size:.92rem;color:#A9A69F;transition:color .2s var(--ease),transform .2s var(--ease);display:inline-block}
.footer-col a:hover{color:var(--brand);transform:translateX(2px)}
.social-row{display:flex;gap:12px;margin-top:20px}
.social-row a{
width:38px;height:38px;border-radius:10px;border:1px solid rgba(255,255,255,.16);
display:grid;place-items:center;color:#A9A69F;transition:color .2s var(--ease),border-color .2s var(--ease);
}
.social-row a:hover{color:var(--brand);border-color:var(--brand);transform:none}
.footer-bottom{
border-top:1px solid rgba(255,255,255,.10);padding:22px 0;
display:flex;align-items:center;justify-content:space-between;gap:18px;flex-wrap:wrap;
font-size:13px;color:#7d7a74;
}

/* ---------- to top ---------- */
.to-top{
position:fixed;right:24px;bottom:24px;width:46px;height:46px;border-radius:12px;
background:var(--ink);color:var(--paper);border:none;cursor:pointer;
display:grid;place-items:center;opacity:0;pointer-events:none;
transition:opacity .25s var(--ease),transform .25s var(--ease),background-color .2s var(--ease);
z-index:60;
}
.to-top.is-visible{opacity:1;pointer-events:auto}
.to-top:hover{background:var(--brand);color:var(--ink);transform:translateY(-3px)}

/* ---------- reveal ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .4s var(--ease),transform .4s var(--ease)}
.reveal.is-in{opacity:1;transform:none}

/* ---------- responsive ---------- */
@media (max-width:1199px){
.hero-grid{gap:48px}
.stat-band .wrap{grid-template-columns:1fr;gap:36px}
}
@media (max-width:1023px){
.wrap{padding:0 24px}
.section{padding:72px 0}
.section--tight{padding:64px 0}
.nav-main{display:none}
.header-actions .btn{display:none}
.header-actions .icon-btn{display:none}
.burger{display:inline-flex}
.hero{padding:56px 0 64px}
.hero-grid{grid-template-columns:1fr;gap:40px}
.hero-media img{aspect-ratio:4/3}
.hero-badge{right:12px;bottom:12px}
.stat-row{gap:22px}
.story-row{grid-template-columns:1fr;gap:28px}
.story-row + .story-row{margin-top:56px}
.story-row--reverse .story-media{order:0}
.feature-grid{grid-template-columns:1fr}
.feature-side{grid-template-rows:none;grid-template-columns:1fr 1fr}
.news-grid{grid-template-columns:repeat(2,1fr)}
.voice-grid{grid-template-columns:repeat(2,1fr)}
.cta-inner{grid-template-columns:1fr;gap:32px}
.footer-grid{grid-template-columns:1fr 1fr;gap:36px}
}
@media (max-width:767px){
body{font-size:16px}
.wrap{padding:0 20px}
.section{padding:56px 0}
.section--tight{padding:52px 0}
.header-inner{height:64px}
.site-header.is-scrolled .header-inner{height:56px}
.hero h1{font-size:clamp(2rem,8vw,2.6rem)}
.hero-cta .btn{flex:1 1 auto}
.stat-row{grid-template-columns:1fr;gap:18px}
.stat-item{border-left:none;border-top:1px solid rgba(255,255,255,.10);padding:16px 0 0}
.feature-lead > a{grid-template-columns:1fr}
.feature-side{grid-template-columns:1fr}
.news-grid{grid-template-columns:1fr}
.voice-grid{grid-template-columns:1fr}
.cta-form{grid-template-columns:1fr}
.cta-form .btn{grid-column:1;width:100%}
.footer-grid{grid-template-columns:1fr;gap:32px}
.footer-bottom{flex-direction:column;align-items:flex-start}
.section-head{flex-direction:column;align-items:flex-start;gap:16px}
.to-top{right:16px;bottom:16px}
}
@media (min-width:1440px){
.wrap{max-width:1240px}
.hero h1{font-size:4.4rem}
}
@media (prefers-reduced-motion:reduce){
.reveal{opacity:1;transform:none;transition:none}
*{scroll-behavior:auto !important}
}

/* roulang page: article */
:root{
  --ink:#14161A;
  --ink-2:#2A2D33;
  --dark:#101215;
  --paper:#F6F4EF;
  --surface:#FFFFFF;
  --line:#E4E0D8;
  --muted:#6E6B66;
  --brand:#B4E33D;
  --accent:#FF5A36;
  --radius-card:12px;
  --radius-btn:8px;
  --shadow-1:0 1px 2px rgba(20,22,26,.06);
  --shadow-2:0 12px 32px rgba(20,22,26,.10);
  --font-cn:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font-cn);
  font-size:17px;
  line-height:1.85;
  color:var(--ink-2);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,h5,h6{margin:0;color:var(--ink);font-family:var(--font-cn);font-weight:700;line-height:1.25;letter-spacing:-.01em}
p{margin:0 0 1.2em}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
button{font:inherit;cursor:pointer;color:inherit}
ul,ol{margin:0 0 1.2em;padding-left:1.25em}
input,textarea,select{font:inherit;color:inherit}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}
.wrap{width:100%;max-width:1200px;margin:0 auto;padding:0 32px}
.section{padding:96px 0}
.section-tight{padding:64px 0}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(255,255,255,.92);
  -webkit-backdrop-filter:blur(8px);
  backdrop-filter:blur(8px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .25s ease;
}
.site-header.is-scrolled{box-shadow:0 6px 24px rgba(20,22,26,.07)}
.header-inner{display:flex;align-items:center;gap:28px;height:72px;transition:height .25s ease}
.site-header.is-scrolled .header-inner{height:60px}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.brand-mark{
  width:34px;height:34px;border-radius:10px;background:var(--brand);color:var(--ink);
  display:inline-flex;align-items:center;justify-content:center;
  font-size:14px;font-weight:800;letter-spacing:.02em;font-family:ui-monospace,SFMono-Regular,Menlo,monospace;
}
.brand-name{font-size:17px;font-weight:800;color:var(--ink);letter-spacing:-.01em}
.nav-main{display:flex;align-items:center;gap:26px;margin-left:auto}
.nav-main a{position:relative;padding:6px 0;font-size:15px;font-weight:500;color:var(--ink-2);transition:color .2s ease;white-space:nowrap}
.nav-main a::after{content:"";position:absolute;left:0;bottom:0;width:0;height:2px;background:var(--brand);transition:width .2s ease}
.nav-main a:hover{color:var(--ink)}
.nav-main a:hover::after{width:100%}
.nav-main a.is-active{color:var(--ink);font-weight:700}
.nav-main a.is-active::after{width:100%}
.header-actions{display:flex;align-items:center;gap:12px;flex:0 0 auto}
.icon-btn{
  width:40px;height:40px;display:inline-flex;align-items:center;justify-content:center;
  background:var(--surface);border:1px solid var(--line);border-radius:10px;color:var(--ink);
  transition:border-color .2s ease,transform .2s ease,background .2s ease;
}
.icon-btn:hover{border-color:var(--ink);transform:translateY(-1px)}
.burger{display:none}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 22px;border-radius:var(--radius-btn);border:1px solid transparent;
  font-size:15px;font-weight:600;line-height:1.2;transition:background .2s ease,color .2s ease,border-color .2s ease,transform .2s ease;
}
.btn-sm{padding:9px 16px;font-size:14px}
.btn-primary{background:var(--ink);color:#F6F4EF}
.btn-primary:hover{background:var(--brand);color:var(--ink);transform:translateY(-2px)}
.btn-brand{background:var(--brand);color:var(--ink)}
.btn-brand:hover{background:#a6d536;transform:translateY(-2px)}
.btn-ghost{background:transparent;border-color:var(--ink);color:var(--ink)}
.btn-ghost:hover{background:var(--ink);color:#F6F4EF}
.search-panel{border-top:1px solid var(--line);background:var(--surface)}
.search-form{display:flex;gap:12px;padding:18px 0 8px}
.search-form input{
  flex:1;min-width:0;padding:12px 16px;border:1px solid var(--line);border-radius:10px;
  background:var(--paper);font-size:15px;
}
.search-form input:focus{border-color:var(--ink);outline:none;box-shadow:0 0 0 3px rgba(180,227,61,.5)}
.search-hint{margin:0 0 18px;font-size:13px;color:var(--muted)}

/* ---------- 文章头 ---------- */
.article-hero{position:relative;background:var(--dark);color:#F6F4EF;padding:44px 0 68px;overflow:hidden}
.article-hero::before{content:"";position:absolute;inset:0;background:url("/assets/images/backpic/back-1.png") center/cover no-repeat;opacity:.26}
.article-hero .wrap{position:relative;z-index:1}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:#A9A69F;margin-bottom:28px}
.breadcrumb a{color:#A9A69F;transition:color .2s ease}
.breadcrumb a:hover{color:var(--brand)}
.breadcrumb .sep{opacity:.55}
.breadcrumb .current{color:#F6F4EF;max-width:280px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.chip{
  display:inline-flex;align-items:center;height:28px;padding:0 12px;border-radius:999px;
  font-size:13px;letter-spacing:.06em;font-weight:600;
  border:1px solid var(--accent);color:var(--accent);background:rgba(255,90,54,.08);
}
.article-head h1{
  color:#F6F4EF;font-size:clamp(1.9rem,3.6vw,3rem);font-weight:800;line-height:1.22;
  letter-spacing:-.02em;margin:18px 0 20px;max-width:900px;
}
.meta-row{display:flex;flex-wrap:wrap;align-items:center;gap:12px;font-size:14px;color:#A9A69F;font-variant-numeric:tabular-nums}
.meta-row time{color:#F6F4EF}
.meta-row .dot{width:4px;height:4px;border-radius:50%;background:rgba(255,255,255,.28)}

/* ---------- 正文 ---------- */
.article-main{padding:64px 0 32px}
.article-shell{max-width:740px;margin:0 auto}
.article-body{font-size:17px;line-height:1.9;color:var(--ink-2)}
.article-body>*:first-child{margin-top:0}
.article-body p{margin:0 0 1.2em}
.article-body h2{
  font-size:clamp(1.4rem,2.4vw,1.75rem);font-weight:700;margin:2.2em 0 .8em;
  padding-left:14px;border-left:4px solid var(--brand);
}
.article-body h3{font-size:1.2rem;font-weight:600;margin:1.8em 0 .6em}
.article-body strong{color:var(--ink);font-weight:700}
.article-body a{color:var(--ink);border-bottom:1px solid var(--brand);transition:color .2s ease}
.article-body a:hover{color:#5f7a14}
.article-body ul,.article-body ol{padding-left:1.35em;margin:0 0 1.3em}
.article-body li{margin-bottom:.5em}
.article-body blockquote{
  margin:1.6em 0;padding:16px 22px;background:var(--surface);
  border-left:3px solid var(--brand);border-radius:0 12px 12px 0;color:var(--ink-2);
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{border-radius:12px;margin:1.6em 0;border:1px solid var(--line)}
.article-body figure{margin:1.8em 0}
.article-body figcaption{font-size:13px;color:var(--muted);margin-top:10px;text-align:center}
.article-body table{width:100%;border-collapse:collapse;display:block;overflow-x:auto;font-size:15px;margin:1.6em 0}
.article-body th,.article-body td{border:1px solid var(--line);padding:10px 14px;text-align:left;background:var(--surface)}
.article-body th{background:#EFECE4;font-weight:600;color:var(--ink)}
.article-body pre{
  background:var(--dark);color:#F6F4EF;padding:18px;border-radius:12px;overflow-x:auto;font-size:14px;line-height:1.7;
}
.article-body code{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:.92em}

.empty-state{
  border:1px dashed var(--line);border-radius:var(--radius-card);background:var(--surface);
  padding:56px 28px;text-align:center;
}
.empty-state svg{color:var(--muted);margin:0 auto 16px}
.empty-state h2{font-size:1.25rem;margin-bottom:10px}
.empty-state p{color:var(--muted);margin-bottom:20px}

.article-foot{
  max-width:740px;margin:40px auto 0;padding-top:28px;border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;gap:20px;justify-content:space-between;align-items:flex-start;
}
.tag-row{display:flex;flex-wrap:wrap;align-items:center;gap:10px}
.tag-label{font-size:13px;color:var(--muted);letter-spacing:.06em}
.tag{
  display:inline-flex;align-items:center;height:30px;padding:0 14px;border-radius:999px;
  background:var(--surface);border:1px solid var(--line);font-size:13px;color:var(--ink-2);
  transition:border-color .2s ease,color .2s ease,transform .2s ease;
}
.tag:hover{border-color:var(--accent);color:var(--accent);transform:translateY(-2px)}
.foot-links{display:flex;gap:12px;flex-wrap:wrap}

/* ---------- 版块标题 ---------- */
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:36px}
.section-head h2{font-size:clamp(1.6rem,3vw,2.2rem);font-weight:700;position:relative;padding-left:16px}
.section-head h2::before{content:"";position:absolute;left:0;top:.22em;width:5px;height:.9em;background:var(--brand);border-radius:2px}
.more-link{font-size:14px;font-weight:600;color:var(--ink);display:inline-flex;align-items:center;gap:6px;position:relative}
.more-link::after{content:"";position:absolute;left:0;bottom:-3px;width:0;height:2px;background:var(--brand);transition:width .2s ease}
.more-link:hover::after{width:100%}

/* ---------- 相关推荐 ---------- */
.related{padding:32px 0 96px}
.card-grid{margin-left:-12px;margin-right:-12px}
.card-grid>.cell{padding-left:12px;padding-right:12px;margin-bottom:24px}
.post-card{
  display:flex;flex-direction:column;height:100%;background:var(--surface);
  border:1px solid var(--line);border-radius:var(--radius-card);overflow:hidden;
  box-shadow:var(--shadow-1);transition:transform .24s cubic-bezier(.2,.7,.3,1),box-shadow .24s ease;
}
.post-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2)}
.post-card figure{margin:0;overflow:hidden;aspect-ratio:16/9;background:var(--paper)}
.post-card figure img{width:100%;height:100%;object-fit:cover;transition:transform .24s ease}
.post-card:hover figure img{transform:scale(1.03)}
.post-card .card-body{padding:22px 24px 24px;display:flex;flex-direction:column;flex:1}
.card-tag{
  display:inline-flex;align-items:center;align-self:flex-start;height:26px;padding:0 11px;border-radius:999px;
  border:1px solid var(--accent);color:var(--accent);font-size:12px;letter-spacing:.06em;font-weight:600;margin-bottom:14px;
}
.post-card h3{font-size:1.1rem;font-weight:600;line-height:1.4;margin-bottom:10px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.post-card .excerpt{font-size:15px;line-height:1.75;color:var(--muted);margin:0 0 18px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.post-card .card-foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;font-size:13px;color:var(--muted);font-variant-numeric:tabular-nums}
.post-card .read{color:var(--ink);font-weight:600;display:inline-flex;align-items:center;gap:6px}
.post-card:hover .read svg{transform:translateX(4px)}
.post-card .read svg{transition:transform .24s ease}

/* ---------- 订阅 CTA ---------- */
.cta-band{background:var(--dark);color:#F6F4EF;padding:72px 0}
.cta-inner{display:grid;grid-template-columns:1.1fr .9fr;gap:48px;align-items:center}
.cta-band h2{color:#F6F4EF;font-size:clamp(1.5rem,2.6vw,2rem);margin-bottom:14px}
.cta-band p{color:#A9A69F;margin:0;font-size:16px}
.subscribe-form{display:flex;flex-wrap:wrap;gap:14px;align-items:flex-end;position:relative}
.subscribe-form input{
  flex:1;min-width:220px;background:transparent;border:0;border-bottom:1px solid rgba(255,255,255,.28);
  padding:12px 2px;color:#F6F4EF;font-size:16px;transition:border-color .2s ease;
}
.subscribe-form input::placeholder{color:rgba(255,255,255,.42)}
.subscribe-form input:focus{outline:none;border-bottom-color:var(--brand);box-shadow:none}
.form-msg{flex:0 0 100%;margin:0;font-size:13px;min-height:18px;color:#A9A69F}
.form-msg.is-error{color:#E5484D}
.form-msg.is-ok{color:var(--brand)}

/* ---------- 回到顶部 ---------- */
.to-top{
  position:fixed;right:28px;bottom:28px;z-index:90;width:46px;height:46px;border-radius:12px;
  background:var(--ink);color:#F6F4EF;border:0;display:inline-flex;align-items:center;justify-content:center;
  opacity:0;visibility:hidden;transform:translateY(8px);transition:opacity .25s ease,transform .25s ease,background .2s ease;
  box-shadow:var(--shadow-2);
}
.to-top.is-show{opacity:1;visibility:visible;transform:none}
.to-top:hover{background:var(--brand);color:var(--ink)}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--dark);color:#F6F4EF;padding:76px 0 28px}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px}
.footer-brand{display:flex;align-items:center;gap:10px;font-size:17px;font-weight:800;margin-bottom:16px}
.footer-col p{color:#A9A69F;font-size:14.5px;line-height:1.8;margin:0 0 12px}
.footer-col h3{color:#F6F4EF;font-size:14px;letter-spacing:.08em;font-weight:600;margin-bottom:18px}
.footer-col ul{list-style:none;margin:0;padding:0}
.footer-col li{margin-bottom:12px}
.footer-col ul a{color:#A9A69F;font-size:14.5px;display:inline-block;transition:color .2s ease,transform .2s ease}
.footer-col ul a:hover{color:var(--brand);transform:translateX(2px)}
.social-row{display:flex;gap:10px;margin-top:20px}
.social-row a{
  width:38px;height:38px;border-radius:10px;display:inline-flex;align-items:center;justify-content:center;
  border:1px solid rgba(255,255,255,.14);color:#F6F4EF;transition:border-color .2s ease,color .2s ease,transform .2s ease;
}
.social-row a:hover{border-color:var(--brand);color:var(--brand);transform:translateY(-2px)}
.footer-bottom{
  margin-top:48px;padding-top:22px;border-top:1px solid rgba(255,255,255,.10);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;font-size:13px;color:#A9A69F;
}

/* ---------- 入场 ---------- */
[data-reveal]{opacity:0;transform:translateY(12px);transition:opacity .4s ease,transform .4s ease}
[data-reveal].is-visible{opacity:1;transform:none}

/* ---------- 响应式 ---------- */
@media (max-width:1023.98px){
  .wrap{padding:0 24px}
  .header-inner{height:64px;gap:16px}
  .nav-main{
    position:absolute;left:0;right:0;top:100%;display:none;flex-direction:column;align-items:stretch;gap:0;
    background:var(--surface);border-bottom:1px solid var(--line);padding:6px 24px 14px;
    box-shadow:0 12px 32px rgba(20,22,26,.10);margin-left:0;
  }
  .site-header.nav-open .nav-main{display:flex}
  .nav-main a{height:48px;display:flex;align-items:center;font-size:16px;border-bottom:1px solid var(--line)}
  .nav-main a:last-child{border-bottom:0}
  .nav-main a::after{display:none}
  .nav-main a.is-active{color:#5f7a14}
  .header-actions .btn{display:none}
  .burger{display:inline-flex}
  .section{padding:72px 0}
  .hero-h1,.article-head h1{font-size:clamp(1.8rem,5vw,2.4rem)}
  .cta-inner{grid-template-columns:1fr;gap:28px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .article-hero{padding:32px 0 52px}
}
@media (max-width:768px){
  .article-main{padding:48px 0 24px}
  .related{padding:16px 0 72px}
  .article-body{font-size:16.5px;line-height:1.85}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column;gap:8px}
  .to-top{right:18px;bottom:18px}
}
@media (max-width:520px){
  .wrap{padding:0 20px}
  .brand-name{font-size:15.5px}
  .article-head h1{font-size:1.6rem}
  .meta-row{font-size:13px}
  .card-grid{margin-left:-8px;margin-right:-8px}
  .card-grid>.cell{padding-left:8px;padding-right:8px}
  .article-foot{flex-direction:column}
  .subscribe-form input{min-width:100%}
}
@media (min-width:1440px){
  .wrap{max-width:1280px}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{transition:none!important;animation:none!important}
  [data-reveal]{opacity:1;transform:none}
}

/* roulang page: category1 */
:root{
  --ink:#14161A;
  --ink-2:#2A2D33;
  --dark:#101215;
  --paper:#F6F4EF;
  --surface:#FFFFFF;
  --line:#E4E0D8;
  --muted:#6E6B66;
  --brand:#B4E33D;
  --accent:#FF5A36;
  --danger:#E5484D;
  --r-card:12px;
  --r-btn:8px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(20,22,26,.06);
  --sh-2:0 12px 32px rgba(20,22,26,.10);
  --ease:cubic-bezier(.2,.7,.3,1);
  --pad-y:96px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink-2);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:17px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none}
button,input{font-family:inherit}
button{cursor:pointer}
h1,h2,h3,h4,p,ul,ol{margin:0}
ul,ol{padding:0;list-style:none}
:focus{outline:none}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:4px}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}
.wrap{width:100%;max-width:1200px;margin:0 auto;padding:0 32px}
.tnum{font-variant-numeric:tabular-nums}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:13px 22px;border-radius:var(--r-btn);
  border:1px solid transparent;font-size:15px;font-weight:600;line-height:1;
  transition:background .22s var(--ease),color .22s var(--ease),border-color .22s var(--ease),transform .22s var(--ease);
}
.btn .arrow{transition:transform .22s var(--ease)}
.btn:hover .arrow{transform:translateX(4px)}
.btn-primary{background:var(--ink);color:#F6F4EF}
.btn-primary:hover{background:var(--brand);color:var(--ink)}
.btn-ghost{background:transparent;color:var(--ink);border-color:var(--ink)}
.btn-ghost:hover{background:var(--ink);color:#F6F4EF}
.btn-brand{background:var(--brand);color:var(--ink)}
.btn-brand:hover{background:#a6d631;color:var(--ink)}
.btn-sm{min-height:40px;padding:10px 16px;font-size:14px}

/* ---------- 头部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:90;
  background:rgba(255,255,255,.99);
  border-bottom:1px solid var(--line);
  transition:background .25s var(--ease),box-shadow .25s var(--ease);
}
.site-header.is-scrolled{
  background:rgba(255,255,255,.92);
  backdrop-filter:blur(10px);
  box-shadow:0 8px 24px rgba(20,22,26,.06);
}
.header-inner{display:flex;align-items:center;gap:28px;height:72px;transition:height .25s var(--ease)}
.site-header.is-scrolled .header-inner{height:60px}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.brand-mark{
  width:34px;height:34px;border-radius:9px;background:var(--ink);
  color:var(--brand);display:inline-flex;align-items:center;justify-content:center;
  font-weight:800;font-size:13px;letter-spacing:.02em;
}
.brand-name{font-size:16px;font-weight:700;color:var(--ink);white-space:nowrap}
.nav-main{display:flex;align-items:center;gap:26px;margin-left:8px}
.nav-main a{
  position:relative;padding:22px 0;font-size:15px;color:var(--ink-2);
  transition:color .2s var(--ease);white-space:nowrap;
}
.nav-main a::after{
  content:"";position:absolute;left:0;bottom:14px;height:2px;width:0;
  background:var(--brand);transition:width .2s var(--ease);
}
.nav-main a:hover{color:var(--ink)}
.nav-main a:hover::after{width:100%}
.nav-main a.is-active{color:var(--ink);font-weight:700}
.nav-main a.is-active::after{width:100%}
.header-actions{display:flex;align-items:center;gap:12px;margin-left:auto}
.icon-btn{
  width:40px;height:40px;border-radius:10px;border:1px solid var(--line);
  background:var(--surface);color:var(--ink);display:inline-flex;align-items:center;justify-content:center;
  transition:background .2s var(--ease),border-color .2s var(--ease);
}
.icon-btn:hover{background:var(--paper);border-color:var(--ink)}
.burger{display:none}
.search-panel{border-top:1px solid var(--line);background:var(--surface);padding:20px 0}
.search-panel[hidden]{display:none}
.search-form{display:flex;gap:12px}
.search-form input{
  flex:1;min-height:44px;border-radius:var(--r-btn);border:1px solid var(--line);
  padding:0 14px;font-size:15px;background:var(--paper);color:var(--ink);
}
.search-form input:focus{border-color:var(--brand);background:var(--surface)}
.search-hint{margin-top:10px;font-size:13px;color:var(--muted)}

/* ---------- Hero ---------- */
.cat-hero{
  position:relative;padding:84px 0 72px;overflow:hidden;
  background:
    radial-gradient(680px 400px at 88% 4%, rgba(180,227,61,.22), transparent 62%),
    radial-gradient(520px 320px at 4% 96%, rgba(255,90,54,.07), transparent 70%),
    var(--paper);
}
.hero-grid{display:grid;grid-template-columns:7fr 5fr;gap:52px;align-items:center}
.pill{
  display:inline-flex;align-items:center;gap:8px;padding:6px 14px;
  border:1px solid var(--line);border-radius:var(--r-pill);background:var(--surface);
  font-size:13px;letter-spacing:.06em;font-weight:600;color:var(--ink);
}
.pill .dot{width:8px;height:8px;border-radius:50%;background:var(--brand)}
h1{
  margin:22px 0 18px;color:var(--ink);
  font-size:clamp(2.4rem,5.2vw,4.05rem);
  font-weight:900;line-height:1.08;letter-spacing:-.02em;
}
.hero-sub{font-size:clamp(1.05rem,1.6vw,1.25rem);line-height:1.7;color:var(--muted);max-width:34em}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}
.hero-points{display:flex;flex-wrap:wrap;gap:28px;margin-top:34px;padding-top:26px;border-top:1px solid var(--line)}
.hero-points div{min-width:130px}
.hero-points strong{display:block;font-size:1.5rem;font-weight:800;color:var(--ink);font-variant-numeric:tabular-nums}
.hero-points span{font-size:13px;color:var(--muted);letter-spacing:.04em}
.hero-media{position:relative}
.hero-media img{
  position:relative;z-index:2;width:100%;aspect-ratio:5/4;object-fit:cover;
  border-radius:var(--r-card);border:1px solid var(--line);box-shadow:var(--sh-1);
}
.hero-media::after{
  content:"";position:absolute;right:-16px;bottom:-16px;width:104px;height:104px;
  border-radius:var(--r-card);background:var(--brand);z-index:1;
}

/* ---------- 深色数据条 ---------- */
.band{
  background:var(--dark);color:#F6F4EF;padding:44px 0;
}
.band-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}
.band-item{border-left:1px solid rgba(255,255,255,.12);padding-left:22px}
.band-item strong{display:block;font-size:2.1rem;font-weight:800;color:var(--brand);line-height:1.1;font-variant-numeric:tabular-nums}
.band-item span{display:block;margin-top:8px;font-size:14px;color:#A9A69F;line-height:1.7}

/* ---------- 通用板块 ---------- */
.section{padding:var(--pad-y) 0}
.section.is-alt{background:var(--surface)}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:40px;flex-wrap:wrap}
.sec-title{
  position:relative;padding-left:16px;color:var(--ink);
  font-size:clamp(1.6rem,3vw,2.4rem);font-weight:700;line-height:1.2;
}
.sec-title::before{
  content:"";position:absolute;left:0;top:.3em;width:4px;height:1em;border-radius:2px;background:var(--brand);
}
.sec-sub{margin-top:14px;font-size:16px;color:var(--muted);max-width:44em}
.sec-link{
  font-size:15px;font-weight:600;color:var(--ink);display:inline-flex;align-items:center;gap:6px;
  border-bottom:2px solid transparent;transition:border-color .2s var(--ease)
}
.sec-link:hover{border-color:var(--brand)}

/* ---------- 入口类型对照 ---------- */
.type-list{border-top:1px solid var(--line)}
.type-row{
  display:grid;grid-template-columns:230px 1fr;gap:36px;
  padding:28px 0;border-bottom:1px solid var(--line);
}
.type-row h3{font-size:1.15rem;font-weight:600;color:var(--ink);line-height:1.4}
.type-tag{
  display:inline-block;margin-top:8px;padding:3px 10px;border-radius:var(--r-pill);
  border:1px solid rgba(255,90,54,.45);color:var(--accent);font-size:12px;letter-spacing:.06em;
}
.type-row p{color:var(--ink-2);font-size:16.5px;max-width:60em}
.type-row ul{margin-top:12px;display:grid;gap:6px}
.type-row li{position:relative;padding-left:16px;font-size:15.5px;color:var(--muted)}
.type-row li::before{content:"";position:absolute;left:0;top:.72em;width:6px;height:6px;border-radius:50%;background:var(--brand)}

/* ---------- 交替图文 ---------- */
.split{
  display:grid;grid-template-columns:6fr 6fr;gap:52px;align-items:center;
  padding:52px 0;border-top:1px solid var(--line);
}
.split:first-of-type{border-top:0}
.split.is-rev .split-copy{order:2}
.split-media{position:relative}
.split-media img{
  width:100%;aspect-ratio:16/11;object-fit:cover;border-radius:var(--r-card);
  border:1px solid var(--line);box-shadow:var(--sh-1);
  transition:transform .24s var(--ease),box-shadow .24s var(--ease);
}
.split-media:hover img{transform:translateY(-4px) scale(1.02);box-shadow:var(--sh-2)}
.split-num{
  font-family:ui-monospace,SFMono-Regular,Menlo,monospace;
  font-size:13px;letter-spacing:.16em;color:var(--accent);font-weight:700;
}
.split-copy h3{margin:12px 0 14px;font-size:1.35rem;font-weight:700;color:var(--ink);line-height:1.35}
.split-copy p{color:var(--ink-2);margin-bottom:14px}
.split-copy ul{display:grid;gap:10px;margin-top:6px}
.split-copy li{position:relative;padding-left:22px;color:var(--ink-2);font-size:16px}
.split-copy li::before{
  content:"";position:absolute;left:0;top:.55em;width:12px;height:2px;background:var(--brand);border-radius:1px;
}

/* ---------- 编号步骤 ---------- */
.steps{border-top:1px solid var(--line)}
.steps li{
  display:grid;grid-template-columns:96px 1fr;gap:28px;padding:30px 0;border-bottom:1px solid var(--line);
}
.step-num{
  font-family:ui-monospace,SFMono-Regular,Menlo,monospace;
  font-size:2rem;font-weight:700;color:var(--ink);line-height:1;
}
.steps li:first-child .step-num{color:var(--accent)}
.steps h3{font-size:1.2rem;font-weight:600;color:var(--ink);margin-bottom:10px;line-height:1.4}
.steps p{color:var(--muted);font-size:16px}

/* ---------- 后续内容位 ---------- */
.slot-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.slot{
  min-height:168px;border:1px dashed var(--line);border-radius:var(--r-card);
  background:rgba(255,255,255,.55);padding:24px;display:flex;flex-direction:column;justify-content:space-between;
  transition:border-color .2s var(--ease),background .2s var(--ease);
}
.slot:hover{border-color:var(--brand);background:var(--surface)}
.slot h3{font-size:1.05rem;font-weight:600;color:var(--ink);line-height:1.45}
.slot span{font-size:13px;color:var(--muted);letter-spacing:.06em}

/* ---------- FAQ ---------- */
.faq-list{max-width:800px;margin:0 auto;border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-q{
  width:100%;background:none;border:0;display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:22px 0;text-align:left;font-size:17.5px;font-weight:600;color:var(--ink);line-height:1.5;
  transition:color .2s var(--ease);
}
.faq-q:hover{color:var(--accent)}
.faq-plus{
  flex:0 0 auto;width:26px;height:26px;border-radius:50%;
  display:inline-flex;align-items:center;justify-content:center;
  border:1px solid var(--line);color:var(--muted);font-size:16px;line-height:1;
  transition:transform .25s var(--ease),background .25s var(--ease),color .25s var(--ease),border-color .25s var(--ease);
}
.faq-item.is-open .faq-plus{transform:rotate(45deg);background:var(--brand);border-color:var(--brand);color:var(--ink)}
.faq-a{display:none;padding:0 0 24px;font-size:16px;line-height:1.8;color:var(--ink-2);max-width:46em}
.faq-item.is-open .faq-a{display:block}
.faq-a a{color:var(--ink);border-bottom:1px solid var(--brand)}

/* ---------- CTA 色带 ---------- */
.cta-band{background:var(--dark);color:#F6F4EF;padding:76px 0}
.cta-grid{display:grid;grid-template-columns:6fr 6fr;gap:52px;align-items:center}
.cta-band h2{font-size:clamp(1.6rem,3vw,2.3rem);font-weight:700;line-height:1.25;color:#F6F4EF}
.cta-band p{margin-top:16px;color:#A9A69F;font-size:16.5px;max-width:32em}
.cta-form{display:flex;gap:12px;align-items:flex-end;flex-wrap:wrap}
.cta-form .field{flex:1 1 220px}
.cta-form label{display:block;font-size:13px;letter-spacing:.06em;color:#A9A69F;margin-bottom:6px}
.cta-form input{
  width:100%;background:transparent;border:0;border-bottom:1px solid rgba(255,255,255,.28);
  color:#F6F4EF;padding:12px 2px;font-size:16px;
}
.cta-form input::placeholder{color:rgba(246,244,239,.42)}
.cta-form input:focus{border-bottom-color:var(--brand)}
.form-msg{margin-top:14px;font-size:13.5px;color:#A9A69F;min-height:20px}
.form-msg.is-error{color:var(--danger)}
.form-msg.is-ok{color:var(--brand)}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--dark);color:#F6F4EF;padding:72px 0 28px}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px}
.footer-brand{display:flex;align-items:center;gap:10px;font-size:16px;font-weight:700;color:#F6F4EF;margin-bottom:16px}
.footer-col p{color:#A9A69F;font-size:14.5px;line-height:1.85;margin-bottom:10px}
.footer-col h3{font-size:15px;font-weight:700;color:#F6F4EF;margin-bottom:16px;letter-spacing:.02em}
.footer-col ul{display:grid;gap:12px}
.footer-col li a{
  color:#A9A69F;font-size:14.5px;display:inline-block;
  transition:color .2s var(--ease),transform .2s var(--ease);
}
.footer-col li a:hover{color:var(--brand);transform:translateX(2px)}
.social-row{display:flex;gap:12px;margin-top:18px}
.social-row a{
  width:36px;height:36px;border-radius:10px;border:1px solid rgba(255,255,255,.16);
  display:inline-flex;align-items:center;justify-content:center;color:#F6F4EF;
  transition:border-color .2s var(--ease),color .2s var(--ease);
}
.social-row a:hover{border-color:var(--brand);color:var(--brand)}
.footer-bottom{
  margin-top:52px;padding-top:22px;border-top:1px solid rgba(255,255,255,.10);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:#A9A69F;
}

/* ---------- 回到顶部 ---------- */
.to-top{
  position:fixed;right:24px;bottom:24px;width:46px;height:46px;border-radius:12px;
  background:var(--ink);color:#F6F4EF;border:0;display:inline-flex;align-items:center;justify-content:center;
  box-shadow:var(--sh-2);opacity:0;visibility:hidden;transform:translateY(8px);
  transition:opacity .25s var(--ease),transform .25s var(--ease),visibility .25s,background .2s var(--ease);
  z-index:70;
}
.to-top:hover{background:var(--brand);color:var(--ink)}
.to-top.is-visible{opacity:1;visibility:visible;transform:translateY(0)}

/* ---------- 入场动画 ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .4s var(--ease),transform .4s var(--ease)}
.reveal.is-in{opacity:1;transform:none}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  :root{--pad-y:80px}
  .wrap{padding:0 28px}
  .hero-grid{gap:40px}
  .footer-grid{grid-template-columns:1.3fr 1fr 1fr;gap:32px}
}
@media (max-width:1023px){
  :root{--pad-y:72px}
  .burger{display:inline-flex}
  .nav-main{
    position:fixed;top:0;right:0;bottom:0;left:auto;width:min(88vw,360px);
    background:var(--surface);flex-direction:column;align-items:stretch;gap:0;
    padding:96px 24px 32px;margin:0;transform:translateX(102%);
    transition:transform .3s var(--ease);z-index:95;overflow-y:auto;
    box-shadow:-16px 0 44px rgba(20,22,26,.14);
  }
  body.nav-open .nav-main{transform:translateX(0)}
  body.nav-open{overflow:hidden}
  body.nav-open::before{
    content:"";position:fixed;inset:0;background:rgba(16,18,21,.42);z-index:92;
  }
  .nav-main a{
    width:100%;height:48px;display:flex;align-items:center;padding:0;
    font-size:16px;border-bottom:1px solid var(--line);
  }
  .nav-main a::after{display:none}
  .nav-main a.is-active{font-weight:700}
  .nav-main a.is-active::before{
    content:"";width:6px;height:6px;border-radius:50%;background:var(--brand);margin-right:10px;
  }
  .hero-grid{grid-template-columns:1fr;gap:36px}
  .hero-media{order:2}
  .band-grid{grid-template-columns:1fr;gap:22px}
  .band-item{border-left:0;border-top:1px solid rgba(255,255,255,.12);padding-left:0;padding-top:16px}
  .band-item:first-child{border-top:0;padding-top:0}
  .split{grid-template-columns:1fr;gap:28px;padding:40px 0}
  .split.is-rev .split-copy{order:0}
  .cta-grid{grid-template-columns:1fr;gap:32px}
  .slot-grid{grid-template-columns:1fr 1fr;gap:20px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:767px){
  :root{--pad-y:56px}
  body{font-size:16.5px}
  .wrap{padding:0 20px}
  .brand-name{font-size:15px}
  .header-inner{height:64px;gap:14px}
  .site-header.is-scrolled .header-inner{height:56px}
  .header-actions .btn{display:none}
  .cat-hero{padding:56px 0 48px}
  h1{margin:18px 0 14px}
  .hero-points{gap:18px}
  .hero-points div{min-width:104px}
  .hero-points strong{font-size:1.25rem}
  .type-row{grid-template-columns:1fr;gap:12px;padding:22px 0}
  .steps li{grid-template-columns:1fr;gap:8px;padding:24px 0}
  .step-num{font-size:1.6rem}
  .slot-grid{grid-template-columns:1fr}
  .section-head{margin-bottom:28px}
  .search-form{flex-direction:column}
  .footer-grid{grid-template-columns:1fr;gap:26px}
  .footer-bottom{flex-direction:column;gap:8px}
  .to-top{right:16px;bottom:16px;width:42px;height:42px}
}
@media (min-width:1441px){
  .wrap{max-width:1280px}
  h1{font-size:4.25rem}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important}
  .reveal{opacity:1;transform:none}
  html{scroll-behavior:auto}
}

/* roulang page: category2 */
:root{
  --ink:#14161A;
  --ink-2:#2A2D33;
  --dark:#101215;
  --paper:#F6F4EF;
  --surface:#FFFFFF;
  --line:#E4E0D8;
  --muted:#6E6B66;
  --brand:#B4E33D;
  --accent:#FF5A36;
  --danger:#E5484D;
  --r-card:12px;
  --r-btn:8px;
  --r-pill:999px;
  --shadow-1:0 1px 2px rgba(20,22,26,.06);
  --shadow-2:0 12px 32px rgba(20,22,26,.10);
  --ease:cubic-bezier(.2,.7,.3,1);
  --container:1200px;
  --gut:32px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink-2);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:17px;
  line-height:1.85;
  font-variant-numeric:tabular-nums;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none}
a:hover{color:inherit}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
input,textarea,select{font:inherit}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;padding:0}
ul,ol{list-style:none}
[hidden]{display:none !important}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}

.wrap{width:100%;max-width:var(--container);margin:0 auto;padding:0 var(--gut)}

/* ---------- Header ---------- */
.site-header{
  position:sticky;top:0;z-index:90;
  background:rgba(255,255,255,.92);
  -webkit-backdrop-filter:saturate(160%) blur(10px);
  backdrop-filter:saturate(160%) blur(10px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .28s var(--ease),background .28s var(--ease);
}
.site-header.is-scrolled{box-shadow:0 8px 24px rgba(20,22,26,.06);background:rgba(255,255,255,.86)}
.header-inner{display:flex;align-items:center;gap:26px;height:72px;transition:height .28s var(--ease)}
.site-header.is-scrolled .header-inner{height:60px}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.brand-mark{
  width:34px;height:34px;border-radius:9px;background:var(--brand);color:var(--ink);
  font-weight:800;font-size:13px;letter-spacing:.02em;
  display:inline-flex;align-items:center;justify-content:center;flex:0 0 auto;
}
.brand-name{font-weight:700;font-size:17px;color:var(--ink);white-space:nowrap}
.nav-main{display:flex;align-items:center;gap:2px;margin-left:auto}
.nav-main a{
  position:relative;padding:9px 12px;font-size:15px;color:var(--ink-2);border-radius:6px;
  transition:color .2s var(--ease),background .2s var(--ease);white-space:nowrap;
}
.nav-main a::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;background:var(--brand);
  transform:scaleX(0);transform-origin:left;transition:transform .2s var(--ease);
}
.nav-main a:hover{color:var(--ink);background:rgba(20,22,26,.04)}
.nav-main a:hover::after{transform:scaleX(1)}
.nav-main a.is-active{color:var(--ink);font-weight:700}
.nav-main a.is-active::after{transform:scaleX(1)}
.header-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.icon-btn{
  width:40px;height:40px;display:inline-flex;align-items:center;justify-content:center;
  border:1px solid var(--line);border-radius:var(--r-btn);background:var(--surface);color:var(--ink-2);
  transition:border-color .2s var(--ease),color .2s var(--ease),background .2s var(--ease);
}
.icon-btn:hover{border-color:var(--ink);color:var(--ink)}
.burger{display:none}
.search-panel{
  position:absolute;left:0;right:0;top:100%;
  background:var(--surface);border-bottom:1px solid var(--line);
  padding:18px 0 16px;box-shadow:var(--shadow-2);
}
.search-form{display:flex;gap:12px;align-items:center}
.search-form input{
  flex:1;min-height:44px;padding:10px 14px;border:1px solid var(--line);border-radius:var(--r-btn);
  background:var(--paper);color:var(--ink);
}
.search-form input:focus{border-color:var(--brand);outline:none}
.search-hint{margin-top:10px;font-size:13px;color:var(--muted)}

/* ---------- Buttons / tags ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 22px;border-radius:var(--r-btn);border:1px solid transparent;
  font-size:15px;font-weight:600;line-height:1.2;white-space:nowrap;
  transition:background .24s var(--ease),color .24s var(--ease),border-color .24s var(--ease),transform .24s var(--ease);
}
.btn svg{transition:transform .24s var(--ease)}
.btn:hover svg{transform:translateX(4px)}
.btn-primary{background:var(--ink);color:var(--paper)}
.btn-primary:hover{background:var(--brand);color:var(--ink)}
.btn-brand{background:var(--brand);color:var(--ink)}
.btn-brand:hover{background:var(--ink);color:var(--paper)}
.btn-ghost{border-color:var(--ink);color:var(--ink);background:transparent}
.btn-ghost:hover{background:var(--ink);color:var(--paper)}
.btn-sm{padding:9px 16px;font-size:14px}
.pill{
  display:inline-flex;align-items:center;gap:8px;padding:6px 14px;border-radius:var(--r-pill);
  border:1px solid var(--line);background:var(--surface);color:var(--ink-2);
  font-size:13px;letter-spacing:.06em;
}
.pill::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--brand)}
.tag{
  display:inline-flex;align-items:center;padding:4px 12px;border-radius:var(--r-pill);
  border:1px solid rgba(255,90,54,.45);background:rgba(255,90,54,.07);color:var(--accent);
  font-size:13px;letter-spacing:.06em;
}
.tag--ink{border-color:var(--line);background:var(--paper);color:var(--ink-2)}

/* ---------- Section basics ---------- */
.section{padding:96px 0}
.section--tight{padding:72px 0}
.section--surface{background:var(--surface);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:40px}
.sec-head h2{position:relative;padding-left:20px;font-size:clamp(1.6rem,3vw,2.4rem);font-weight:700;line-height:1.2;color:var(--ink);letter-spacing:-.01em}
.sec-head h2::before{content:"";position:absolute;left:0;top:.28em;width:4px;height:24px;border-radius:2px;background:var(--brand)}
.sec-desc{margin-top:12px;max-width:640px;font-size:15px;color:var(--muted);line-height:1.8}
.sec-link{font-size:15px;font-weight:600;color:var(--ink);position:relative;padding-bottom:3px;white-space:nowrap}
.sec-link::after{content:"";position:absolute;left:0;bottom:0;height:2px;width:0;background:var(--brand);transition:width .2s var(--ease)}
.sec-link:hover::after{width:100%}

/* ---------- Foundation grid overrides ---------- */
.grid-x{display:flex;flex-wrap:wrap;margin-left:-16px;margin-right:-16px}
.grid-x>.cell{padding-left:16px;padding-right:16px;width:100%;margin-bottom:32px}
.grid-x>.small-12{width:100%}
@media screen and (min-width:640px){
  .grid-x>.medium-6{width:50%}
}
@media screen and (min-width:1024px){
  .grid-x>.large-4{width:33.3333%}
  .grid-x>.large-5{width:41.6667%}
  .grid-x>.large-7{width:58.3333%}
  .grid-x>.large-8{width:66.6667%}
}

/* ---------- Hero ---------- */
.hero{position:relative;overflow:hidden;padding:76px 0 88px;background:var(--paper)}
.hero::before{
  content:"";position:absolute;top:-180px;right:-140px;width:520px;height:520px;border-radius:50%;
  background:radial-gradient(circle,rgba(180,227,61,.38),rgba(180,227,61,0) 68%);pointer-events:none;
}
.hero-grid{position:relative;display:grid;grid-template-columns:7fr 5fr;gap:56px;align-items:center}
.hero h1{
  margin-top:20px;
  font-size:clamp(2.2rem,4.6vw,3.6rem);
  font-weight:900;line-height:1.08;letter-spacing:-.02em;color:var(--ink);
}
.hero-sub{margin-top:20px;max-width:560px;font-size:clamp(1.05rem,1.6vw,1.2rem);line-height:1.75;color:var(--muted)}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px}
.stat-row{display:flex;gap:44px;margin-top:44px;flex-wrap:wrap}
.stat-num{font-size:1.55rem;font-weight:800;color:var(--ink);line-height:1.2}
.stat-label{margin-top:6px;font-size:13px;letter-spacing:.06em;color:var(--muted)}
.hero-visual{position:relative}
.hero-visual::before{
  content:"";position:absolute;left:-18px;top:-18px;width:112px;height:112px;border-radius:18px;background:var(--brand);
}
.hero-visual img{
  position:relative;z-index:1;width:100%;aspect-ratio:4/5;object-fit:cover;
  border-radius:16px;border:1px solid var(--line);box-shadow:var(--shadow-2);
}

/* ---------- Feature card + side numbered list ---------- */
.feature{
  display:grid;grid-template-columns:1fr 1fr;background:var(--surface);
  border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;box-shadow:var(--shadow-1);
  transition:transform .24s var(--ease),box-shadow .24s var(--ease);
}
.feature:hover{transform:translateY(-4px);box-shadow:var(--shadow-2)}
.feature-media{overflow:hidden;min-height:280px}
.feature-media img{width:100%;height:100%;object-fit:cover;transition:transform .24s var(--ease)}
.feature:hover .feature-media img{transform:scale(1.03)}
.feature-body{padding:32px;display:flex;flex-direction:column;gap:14px}
.feature-body h3{font-size:1.25rem;font-weight:700;line-height:1.35;color:var(--ink)}
.feature-body p{font-size:16px;color:var(--ink-2)}
.feature-foot{margin-top:auto;padding-top:10px}
.side-list{border-top:1px solid var(--line)}
.side-item{display:flex;gap:18px;padding:22px 0;border-bottom:1px solid var(--line)}
.side-num{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:13px;font-weight:700;color:var(--accent);letter-spacing:.08em;padding-top:5px}
.side-item h3{font-size:1.05rem;font-weight:700;color:var(--ink);margin-bottom:6px}
.side-item p{font-size:15px;color:var(--muted);line-height:1.8}

/* ---------- Cards ---------- */
.card{
  display:flex;flex-direction:column;height:100%;background:var(--surface);
  border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;box-shadow:var(--shadow-1);
  transition:transform .24s var(--ease),box-shadow .24s var(--ease);
}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2)}
.card-media{aspect-ratio:16/9;overflow:hidden}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform .24s var(--ease)}
.card:hover .card-media img{transform:scale(1.03)}
.card-body{padding:26px;display:flex;flex-direction:column;gap:12px;flex:1}
.card-body h3{font-size:1.15rem;font-weight:700;line-height:1.35;color:var(--ink)}
.card-body p{font-size:15.5px;color:var(--ink-2)}
.card-meta{display:flex;align-items:center;gap:12px;flex-wrap:wrap}
.card-meta time,.card-meta .meta-text{font-size:13px;color:var(--muted);letter-spacing:.04em}
.card-foot{margin-top:auto;padding-top:8px;font-size:15px;font-weight:600;color:var(--ink);display:inline-flex;align-items:center;gap:6px}
.card-foot svg{transition:transform .24s var(--ease)}
.card:hover .card-foot svg{transform:translateX(4px)}

/* ---------- Steps ---------- */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.step{position:relative;background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);padding:28px 24px;box-shadow:var(--shadow-1);transition:transform .24s var(--ease),box-shadow .24s var(--ease)}
.step:hover{transform:translateY(-4px);box-shadow:var(--shadow-2)}
.step-num{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:26px;font-weight:800;color:var(--ink);line-height:1}
.step-bar{width:36px;height:4px;border-radius:2px;background:var(--brand);margin:16px 0}
.step h3{font-size:1.05rem;font-weight:700;color:var(--ink);margin-bottom:8px}
.step p{font-size:15px;color:var(--muted);line-height:1.8}

/* ---------- Timeline ---------- */
.timeline{border-left:2px solid var(--line);padding-left:30px;display:flex;flex-direction:column;gap:30px}
.tl-item{position:relative}
.tl-item::before{content:"";position:absolute;left:-37px;top:11px;width:10px;height:10px;border-radius:50%;background:var(--brand);box-shadow:0 0 0 4px var(--paper)}
.section--surface .tl-item::before{box-shadow:0 0 0 4px var(--surface)}
.tl-date{font-size:13px;letter-spacing:.06em;color:var(--muted)}
.tl-item h3{margin-top:8px;font-size:1.1rem;font-weight:700;color:var(--ink)}
.tl-item p{margin-top:8px;font-size:15.5px;color:var(--ink-2);max-width:720px}

/* ---------- Safety block ---------- */
.split{display:grid;grid-template-columns:5fr 7fr;gap:48px;align-items:center}
.split-media img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--r-card);border:1px solid var(--line)}
.check-list{margin-top:24px;display:flex;flex-direction:column;gap:18px}
.check-item{display:flex;gap:14px;align-items:flex-start}
.check-dot{flex:0 0 auto;width:22px;height:22px;border-radius:50%;background:var(--brand);color:var(--ink);display:inline-flex;align-items:center;justify-content:center;margin-top:5px}
.check-item p{font-size:16px;color:var(--ink-2)}

/* ---------- FAQ ---------- */
.faq{max-width:800px;margin:0 auto}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item:first-child{border-top:1px solid var(--line)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:22px 0;text-align:left;font-size:17.5px;font-weight:600;color:var(--ink);
  transition:color .2s var(--ease);
}
.faq-q:hover{color:var(--ink)}
.faq-icon{flex:0 0 auto;width:22px;height:22px;color:var(--ink-2);transition:transform .24s var(--ease),color .24s var(--ease)}
.faq-item.is-open .faq-icon{transform:rotate(45deg);color:var(--brand)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s var(--ease)}
.faq-item.is-open .faq-a{max-height:340px}
.faq-a p{padding:0 0 24px;font-size:16px;line-height:1.85;color:var(--ink-2);max-width:92%}

/* ---------- CTA band ---------- */
.cta-band{background:var(--dark);color:var(--paper);padding:80px 0}
.cta-band h2{font-size:clamp(1.6rem,3vw,2.3rem);font-weight:700;line-height:1.22;color:var(--paper)}
.cta-band .cta-desc{margin-top:14px;font-size:16px;color:#A9A69F;max-width:520px;line-height:1.8}
.cta-grid{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}
.cta-form{display:flex;flex-direction:column;gap:18px}
.cta-form label{font-size:13px;letter-spacing:.06em;color:#A9A69F}
.cta-input-row{display:flex;gap:14px;align-items:flex-end}
.cta-form input{
  flex:1;min-height:46px;padding:10px 2px;background:transparent;color:var(--paper);
  border:0;border-bottom:1px solid rgba(255,255,255,.24);border-radius:0;
  transition:border-color .24s var(--ease);
}
.cta-form input::placeholder{color:#6E6B66}
.cta-form input:focus{outline:none;border-bottom-color:var(--brand)}
.form-msg{min-height:22px;font-size:13.5px;letter-spacing:.02em;color:#A9A69F}
.form-msg.is-error{color:var(--danger)}
.form-msg.is-ok{color:var(--brand)}
.cta-note{font-size:13px;color:#A9A69F;border-top:1px solid rgba(255,255,255,.10);padding-top:16px}

/* ---------- Footer ---------- */
.site-footer{background:var(--dark);color:var(--paper);padding:72px 0 28px}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px}
.footer-brand{display:flex;align-items:center;gap:10px;font-weight:700;font-size:17px;color:var(--paper)}
.footer-col h3{font-size:14px;letter-spacing:.08em;color:#A9A69F;font-weight:600;margin-bottom:18px}
.footer-col p{font-size:14.5px;color:#A9A69F;line-height:1.85;margin-bottom:10px;max-width:320px}
.footer-col ul{display:flex;flex-direction:column;gap:12px}
.footer-col ul a{font-size:14.5px;color:var(--paper);display:inline-block;transition:color .2s var(--ease),transform .2s var(--ease)}
.footer-col ul a:hover{color:var(--brand);transform:translateX(-2px)}
.social-row{display:flex;gap:12px;margin-top:20px}
.social-row a{
  width:38px;height:38px;border-radius:var(--r-btn);border:1px solid rgba(255,255,255,.14);
  display:inline-flex;align-items:center;justify-content:center;color:var(--paper);
  transition:border-color .2s var(--ease),color .2s var(--ease);
}
.social-row a:hover{border-color:var(--brand);color:var(--brand)}
.footer-bottom{
  margin-top:56px;padding-top:22px;border-top:1px solid rgba(255,255,255,.10);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:#A9A69F;
}

/* ---------- To top ---------- */
.to-top{
  position:fixed;right:24px;bottom:24px;z-index:80;width:46px;height:46px;border-radius:10px;
  background:var(--ink);color:var(--paper);display:inline-flex;align-items:center;justify-content:center;
  box-shadow:var(--shadow-2);opacity:0;pointer-events:none;transform:translateY(8px);
  transition:opacity .24s var(--ease),transform .24s var(--ease),background .24s var(--ease);
}
.to-top.is-visible{opacity:1;pointer-events:auto;transform:none}
.to-top:hover{background:var(--brand);color:var(--ink)}

/* ---------- Reveal ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .42s var(--ease),transform .42s var(--ease)}
.reveal.is-in{opacity:1;transform:none}

/* ---------- Responsive ---------- */
@media screen and (max-width:1023px){
  :root{--gut:24px}
  .burger{display:inline-flex}
  .nav-main{
    position:fixed;top:0;right:0;z-index:95;
    width:min(86vw,340px);height:100vh;
    flex-direction:column;align-items:flex-start;gap:2px;
    margin-left:0;padding:88px 22px 28px;
    background:var(--surface);border-left:1px solid var(--line);
    transform:translateX(100%);transition:transform .3s var(--ease);
    overflow-y:auto;box-shadow:0 20px 50px rgba(20,22,26,.18);
  }
  .nav-main::before{
    content:"九游j9官方官网";position:absolute;top:28px;left:22px;
    font-size:16px;font-weight:800;color:var(--ink);letter-spacing:-.01em;
  }
  .site-header.nav-open .nav-main{transform:translateX(0)}
  .nav-main a{width:100%;height:48px;display:flex;align-items:center;padding:0 10px;font-size:16px;border-radius:8px}
  .nav-main a::after{left:10px;right:auto;width:22px;bottom:6px}
  .hero{padding:56px 0 64px}
  .hero-grid{grid-template-columns:1fr;gap:40px}
  .hero-visual{max-width:520px}
  .hero-visual img{aspect-ratio:4/3}
  .section{padding:72px 0}
  .section--tight{padding:56px 0}
  .steps{grid-template-columns:1fr 1fr}
  .split{grid-template-columns:1fr;gap:32px}
  .cta-grid{grid-template-columns:1fr;gap:32px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px}
}
@media screen and (max-width:767px){
  :root{--gut:20px}
  body{font-size:16px;line-height:1.8}
  .header-inner{gap:14px}
  .brand-name{font-size:15.5px}
  .hero{padding:44px 0 56px}
  .hero h1{font-size:clamp(1.9rem,7.6vw,2.5rem)}
  .hero-actions .btn{flex:1 1 100%}
  .stat-row{gap:26px}
  .stat-num{font-size:1.35rem}
  .section{padding:56px 0}
  .sec-head{flex-direction:column;align-items:flex-start;gap:12px;margin-bottom:28px}
  .feature{grid-template-columns:1fr}
  .feature-media{min-height:220px;aspect-ratio:16/9}
  .feature-body{padding:24px}
  .steps{grid-template-columns:1fr}
  .timeline{padding-left:22px}
  .tl-item::before{left:-29px}
  .faq-q{font-size:16.5px}
  .cta-band{padding:56px 0}
  .cta-input-row{flex-direction:column;align-items:stretch}
  .cta-input-row .btn{width:100%}
  .footer-grid{grid-template-columns:1fr;gap:32px}
  .footer-bottom{flex-direction:column;gap:8px;margin-top:36px}
  .to-top{right:16px;bottom:16px}
}
@media screen and (max-width:519px){
  .icon-btn{width:38px;height:38px}
  .header-actions .btn-sm{display:none}
}
@media screen and (min-width:1440px){
  :root{--container:1280px}
  .hero h1{font-size:clamp(2.6rem,3.6vw,4rem)}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important}
  .reveal{opacity:1;transform:none}
  html{scroll-behavior:auto}
}

/* roulang page: category3 */
:root{
  --ink:#14161A;
  --ink-2:#2A2D33;
  --dark:#101215;
  --paper:#F6F4EF;
  --surface:#FFFFFF;
  --line:#E4E0D8;
  --muted:#6E6B66;
  --brand:#B4E33D;
  --brand-deep:#9FCC2C;
  --accent:#FF5A36;
  --dark-text:#F6F4EF;
  --dark-muted:#A9A69F;
  --err:#E5484D;
  --r-card:12px;
  --r-btn:8px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(20,22,26,.06);
  --sh-2:0 12px 32px rgba(20,22,26,.10);
  --maxw:1200px;
  --sec:clamp(56px,7.5vw,112px);
  --font:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --mono:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font);
  font-size:17px;
  line-height:1.85;
  color:var(--ink-2);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:var(--ink);text-decoration:none;transition:color .2s ease}
a:hover{color:var(--ink)}
h1,h2,h3,h4,p,ul,ol,figure{margin:0}
ul,ol{padding:0;list-style:none}
button{font-family:inherit;cursor:pointer;border:0;background:none;color:inherit}
input{font-family:inherit;font-size:15px}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 32px}
.section{padding:var(--sec) 0}
.section-tight{padding:clamp(40px,5vw,64px) 0}
.section-dark{background:var(--dark);color:var(--dark-text)}
.section-dark a{color:var(--dark-text)}
.section-surface{background:var(--surface)}
.tnum{font-variant-numeric:tabular-nums}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(255,255,255,.92);
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .25s ease,background .25s ease;
}
.site-header.is-scrolled{box-shadow:0 6px 20px rgba(20,22,26,.06)}
.header-inner{display:flex;align-items:center;gap:20px;height:72px;transition:height .25s ease}
.site-header.is-scrolled .header-inner{height:60px}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.brand-mark{
  width:34px;height:34px;border-radius:9px;background:var(--ink);color:var(--brand);
  display:flex;align-items:center;justify-content:center;
  font-size:13px;font-weight:800;letter-spacing:.02em;
}
.brand-name{font-size:16px;font-weight:700;color:var(--ink);white-space:nowrap}
.nav-main{display:flex;align-items:center;gap:2px;margin-left:auto}
.nav-main a{
  position:relative;display:inline-flex;align-items:center;height:38px;
  padding:0 12px;border-radius:6px;font-size:15px;color:var(--ink-2);
  transition:color .2s ease,background .2s ease;
}
.nav-main a::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;
  background:var(--brand);transform:scaleX(0);transform-origin:left;
  transition:transform .22s cubic-bezier(.2,.7,.3,1);
}
.nav-main a:hover{color:var(--ink);background:rgba(20,22,26,.04)}
.nav-main a:hover::after{transform:scaleX(1)}
.nav-main a.is-active{color:var(--ink);font-weight:700}
.nav-main a.is-active::after{transform:scaleX(1)}
.header-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.icon-btn{
  width:40px;height:40px;border-radius:8px;border:1px solid var(--line);
  display:inline-flex;align-items:center;justify-content:center;color:var(--ink);
  background:var(--surface);transition:border-color .2s ease,background .2s ease,transform .2s ease;
}
.icon-btn:hover{border-color:var(--ink);background:#fff}
.burger{display:none}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;line-height:1;white-space:nowrap;
  border:1px solid transparent;transition:background .22s ease,color .22s ease,border-color .22s ease,transform .22s ease,box-shadow .22s ease;
}
.btn svg{transition:transform .22s cubic-bezier(.2,.7,.3,1)}
.btn:hover svg{transform:translateX(4px)}
.btn-sm{height:38px;padding:0 16px;font-size:14px}
.btn-primary{background:var(--ink);color:var(--paper)}
.btn-primary:hover{background:var(--brand);color:var(--ink)}
.btn-ghost{border-color:var(--ink);color:var(--ink);background:transparent}
.btn-ghost:hover{background:var(--ink);color:var(--paper)}
.btn-brand{background:var(--brand);color:var(--ink)}
.btn-brand:hover{background:var(--brand-deep);color:var(--ink)}
.btn-on-dark{border-color:rgba(255,255,255,.32);color:var(--dark-text);background:transparent}
.btn-on-dark:hover{border-color:var(--brand);color:var(--brand)}

.search-panel{border-top:1px solid var(--line);background:var(--surface);padding:18px 0 20px}
.search-form{display:flex;gap:12px;max-width:640px}
.search-form input{
  flex:1;height:46px;padding:0 16px;border:1px solid var(--line);border-radius:var(--r-btn);
  background:var(--paper);color:var(--ink);
}
.search-form input:focus{border-color:var(--ink);outline:none;box-shadow:0 0 0 3px rgba(180,227,61,.45)}
.search-hint{margin-top:10px;font-size:13px;color:var(--muted)}

/* drawer */
.drawer-mask{position:fixed;inset:0;background:rgba(16,18,21,.5);opacity:0;visibility:hidden;transition:opacity .28s ease,visibility .28s ease;z-index:80}
.drawer-mask.is-open{opacity:1;visibility:visible}
.drawer{
  position:fixed;top:0;right:0;height:100%;width:min(380px,90vw);z-index:90;
  background:var(--surface);display:flex;flex-direction:column;
  transform:translateX(102%);transition:transform .32s cubic-bezier(.2,.7,.3,1);
  border-left:1px solid var(--line);
}
.drawer.is-open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding:16px 20px;border-bottom:1px solid var(--line)}
.drawer-nav{padding:8px 12px;flex:1;overflow-y:auto}
.drawer-nav a{
  display:flex;align-items:center;height:48px;padding:0 12px;border-radius:8px;
  font-size:16px;color:var(--ink-2);border-bottom:1px solid var(--line);
}
.drawer-nav a.is-active{color:var(--ink);font-weight:700;background:rgba(180,227,61,.18)}
.drawer-foot{padding:18px 20px 26px;border-top:1px solid var(--line);display:flex;flex-direction:column;gap:12px}
.drawer-foot .btn{width:100%}
.drawer-contact{font-size:13px;color:var(--muted);line-height:1.7}

/* ---------- breadcrumb ---------- */
.crumb{padding:22px 0 0}
.crumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--muted)}
.crumb li{display:flex;align-items:center;gap:8px}
.crumb li+li::before{content:"/";color:var(--line)}
.crumb a{color:var(--muted)}
.crumb a:hover{color:var(--ink)}
.crumb [aria-current] {color:var(--ink);font-weight:600}

/* ---------- hero ---------- */
.hero{padding:36px 0 clamp(56px,7vw,96px);position:relative;overflow:hidden}
.hero::after{
  content:"";position:absolute;top:-120px;right:-80px;width:420px;height:420px;border-radius:50%;
  background:radial-gradient(circle,rgba(180,227,61,.30),rgba(180,227,61,0) 68%);
  pointer-events:none;
}
.hero-grid{display:grid;grid-template-columns:7fr 5fr;gap:56px;align-items:center;position:relative;z-index:1}
.hero-pill{
  display:inline-flex;align-items:center;gap:8px;height:30px;padding:0 14px;border-radius:var(--r-pill);
  border:1px solid var(--line);background:var(--surface);font-size:13px;color:var(--muted);letter-spacing:.06em;
}
.hero-pill .dot{width:7px;height:7px;border-radius:50%;background:var(--accent)}
.hero h1{
  margin-top:22px;font-size:clamp(2.2rem,4.6vw,3.6rem);font-weight:900;line-height:1.1;
  letter-spacing:-.02em;color:var(--ink);max-width:16em;
}
.hero-sub{margin-top:22px;font-size:clamp(1.02rem,1.5vw,1.18rem);line-height:1.75;color:var(--muted);max-width:34em}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px}
.hero-note{margin-top:20px;font-size:13px;color:var(--muted)}
.hero-media{position:relative}
.hero-media img{
  width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--r-card);
  border:1px solid var(--line);
}
.hero-media::before{
  content:"";position:absolute;left:-18px;bottom:-18px;width:112px;height:112px;
  background:var(--brand);border-radius:var(--r-card);z-index:-1;
}
.hero-media .grid-line{
  position:absolute;top:14px;left:14px;right:14px;height:1px;background:rgba(255,255,255,.55);
}

/* ---------- stats ---------- */
.stats{background:var(--surface);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.stat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:0}
.stat-item{padding:30px 26px;border-left:1px solid var(--line)}
.stat-item:first-child{border-left:0}
.stat-num{font-size:clamp(1.7rem,2.6vw,2.2rem);font-weight:800;color:var(--ink);line-height:1.2;font-variant-numeric:tabular-nums}
.stat-num span{font-size:.55em;font-weight:700;color:var(--muted);margin-left:4px}
.stat-label{margin-top:8px;font-size:14px;color:var(--muted);line-height:1.65}

/* ---------- section head ---------- */
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:28px;margin-bottom:40px}
.sec-head h2{
  position:relative;padding-left:18px;font-size:clamp(1.55rem,2.8vw,2.25rem);
  font-weight:800;line-height:1.2;color:var(--ink);letter-spacing:-.01em;
}
.sec-head h2::before{content:"";position:absolute;left:0;top:.22em;bottom:.22em;width:5px;border-radius:3px;background:var(--brand)}
.sec-head p{margin-top:12px;font-size:15.5px;color:var(--muted);max-width:52em;padding-left:18px}
.sec-link{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--ink);white-space:nowrap}
.sec-link svg{transition:transform .22s ease}
.sec-link:hover svg{transform:translateX(4px)}
.section-dark .sec-head h2{color:var(--dark-text)}
.section-dark .sec-head p{color:var(--dark-muted)}

/* ---------- rail ---------- */
.rail-head{display:flex;align-items:center;gap:12px;margin-left:auto}
.rail-btn{
  width:42px;height:42px;border-radius:var(--r-btn);border:1px solid var(--line);background:var(--surface);
  display:inline-flex;align-items:center;justify-content:center;color:var(--ink);
  transition:border-color .2s ease,background .2s ease,color .2s ease;
}
.rail-btn:hover{border-color:var(--ink);background:var(--ink);color:var(--paper)}
.rail-btn:disabled{opacity:.35;cursor:not-allowed}
.rail-btn:disabled:hover{background:var(--surface);color:var(--ink);border-color:var(--line)}
.rail{
  display:flex;gap:24px;overflow-x:auto;scroll-snap-type:x mandatory;
  padding:6px 4px 26px;margin:0 -4px;scrollbar-width:thin;
}
.rail::-webkit-scrollbar{height:6px}
.rail::-webkit-scrollbar-track{background:var(--line);border-radius:999px}
.rail::-webkit-scrollbar-thumb{background:#c9c4b9;border-radius:999px}
.rail::-webkit-scrollbar-thumb:hover{background:var(--muted)}
.rail-card{
  flex:0 0 322px;scroll-snap-align:start;display:flex;flex-direction:column;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--sh-1);overflow:hidden;margin-bottom:0;
  transition:transform .24s cubic-bezier(.2,.7,.3,1),box-shadow .24s ease,border-color .24s ease;
}
.rail-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:#d7d2c8}
.rail-thumb{position:relative;overflow:hidden}
.rail-thumb img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .24s ease}
.rail-card:hover .rail-thumb img{transform:scale(1.03)}
.rail-rank{
  position:absolute;left:12px;top:12px;height:26px;padding:0 10px;border-radius:var(--r-pill);
  background:rgba(20,22,26,.86);color:var(--paper);font-size:12px;font-weight:700;
  display:inline-flex;align-items:center;font-variant-numeric:tabular-nums;letter-spacing:.04em;
}
.rail-body{padding:22px 22px 24px;display:flex;flex-direction:column;flex:1}
.rail-meta{display:flex;align-items:center;gap:12px;margin-bottom:12px}
.tag{
  display:inline-flex;align-items:center;height:24px;padding:0 11px;border-radius:var(--r-pill);
  border:1px solid rgba(255,90,54,.45);color:var(--accent);font-size:12px;font-weight:600;letter-spacing:.06em;
}
.rail-time{font-size:13px;color:var(--muted);font-variant-numeric:tabular-nums}
.rail-body h3{font-size:1.16rem;font-weight:700;line-height:1.35;color:var(--ink)}
.rail-desc{
  margin-top:10px;font-size:14.5px;line-height:1.75;color:var(--muted);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.rail-foot{margin-top:20px;padding-top:16px;border-top:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;gap:12px}
.rail-foot .heat{font-size:13px;color:var(--muted);font-variant-numeric:tabular-nums}
.rail-foot .heat b{color:var(--ink)}
.read-more{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--ink)}
.read-more svg{transition:transform .22s ease}
.read-more:hover svg{transform:translateX(4px)}

/* ---------- explain split ---------- */
.explain{display:grid;grid-template-columns:5fr 7fr;gap:64px;align-items:start}
.explain h2{
  font-size:clamp(1.6rem,2.8vw,2.2rem);font-weight:800;line-height:1.22;color:var(--ink);letter-spacing:-.01em;
}
.explain .lead{margin-top:18px;font-size:15.5px;color:var(--muted);line-height:1.8}
.rule-list{border-top:1px solid var(--line)}
.rule-item{display:grid;grid-template-columns:56px 1fr;gap:20px;padding:24px 0;border-bottom:1px solid var(--line)}
.rule-num{font-family:var(--mono);font-size:15px;font-weight:700;color:var(--accent);letter-spacing:.04em;padding-top:3px}
.rule-item h3{font-size:1.05rem;font-weight:700;color:var(--ink)}
.rule-item p{margin-top:8px;font-size:15px;color:var(--muted);line-height:1.8}

/* ---------- genre grid ---------- */
.genre-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.genre-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  padding:28px 24px;box-shadow:var(--sh-1);margin-bottom:0;
  transition:transform .24s cubic-bezier(.2,.7,.3,1),box-shadow .24s ease;
}
.genre-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2)}
.genre-icon{
  width:44px;height:44px;border-radius:10px;background:rgba(180,227,61,.28);
  display:flex;align-items:center;justify-content:center;color:var(--ink);margin-bottom:18px;
}
.genre-card h3{font-size:1.06rem;font-weight:700;color:var(--ink)}
.genre-card p{margin-top:10px;font-size:14.5px;color:var(--muted);line-height:1.75}
.genre-card .genre-count{margin-top:16px;font-size:13px;color:var(--muted);font-variant-numeric:tabular-nums}

/* ---------- steps ---------- */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.step{padding:28px 24px;border:1px solid var(--line);border-radius:var(--r-card);background:var(--surface);box-shadow:var(--sh-1)}
.step .n{font-family:var(--mono);font-size:2rem;font-weight:700;color:var(--ink);line-height:1;opacity:.22}
.step h3{margin-top:16px;font-size:1.08rem;font-weight:700;color:var(--ink)}
.step p{margin-top:10px;font-size:14.5px;color:var(--muted);line-height:1.75}

/* ---------- feature split (大卡 + 侧列) ---------- */
.feature-grid{display:grid;grid-template-columns:8fr 4fr;gap:24px}
.feature-main{
  display:grid;grid-template-columns:6fr 6fr;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-1);margin-bottom:0;
  transition:transform .24s cubic-bezier(.2,.7,.3,1),box-shadow .24s ease;
}
.feature-main:hover{transform:translateY(-4px);box-shadow:var(--sh-2)}
.feature-main .fm-media{overflow:hidden}
.feature-main .fm-media img{width:100%;height:100%;min-height:290px;object-fit:cover;transition:transform .24s ease}
.feature-main:hover .fm-media img{transform:scale(1.03)}
.feature-main .fm-body{padding:34px 32px;display:flex;flex-direction:column;justify-content:center}
.feature-main h3{margin-top:14px;font-size:1.4rem;font-weight:700;color:var(--ink);line-height:1.3}
.feature-main p{margin-top:14px;font-size:15px;color:var(--muted);line-height:1.8}
.feature-side{display:grid;gap:24px}
.side-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  padding:26px 24px;box-shadow:var(--sh-1);margin-bottom:0;
  transition:transform .24s cubic-bezier(.2,.7,.3,1),box-shadow .24s ease;
}
.side-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2)}
.side-card .k{font-family:var(--mono);font-size:13px;color:var(--accent);font-weight:700;letter-spacing:.06em}
.side-card h3{margin-top:12px;font-size:1.06rem;font-weight:700;color:var(--ink)}
.side-card p{margin-top:10px;font-size:14.5px;color:var(--muted);line-height:1.75}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:800px;margin:0 auto}
.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:600;color:var(--ink);line-height:1.6;
  transition:color .2s ease;
}
.faq-q:hover{color:var(--ink-2)}
.faq-q .plus{
  flex:0 0 auto;width:26px;height:26px;border-radius:50%;border:1px solid var(--line);
  display:inline-flex;align-items:center;justify-content:center;font-size:16px;font-weight:600;color:var(--muted);
  transition:transform .25s cubic-bezier(.2,.7,.3,1),color .25s ease,border-color .25s ease,background .25s ease;
}
.faq-item.is-open .plus{transform:rotate(45deg);color:var(--ink);border-color:var(--brand);background:var(--brand)}
.faq-a{padding:0 0 24px;font-size:16px;color:var(--muted);line-height:1.85;max-width:66ch}
.section-dark .faq-list,.section-dark .faq-item{border-color:rgba(255,255,255,.12)}
.section-dark .faq-q{color:var(--dark-text)}

/* ---------- CTA ---------- */
.cta-band{background:var(--dark);color:var(--dark-text)}
.cta-grid{display:grid;grid-template-columns:6fr 5fr;gap:56px;align-items:center}
.cta-grid h2{font-size:clamp(1.55rem,2.8vw,2.2rem);font-weight:800;line-height:1.24;color:var(--dark-text)}
.cta-grid p{margin-top:18px;font-size:15.5px;color:var(--dark-muted);line-height:1.8;max-width:36em}
.cta-form{display:flex;flex-direction:column;gap:14px}
.cta-row{display:flex;gap:12px}
.cta-row input{
  flex:1;height:50px;padding:0 4px;background:transparent;color:var(--dark-text);
  border:0;border-bottom:1px solid rgba(255,255,255,.28);border-radius:0;
  transition:border-color .22s ease;
}
.cta-row input::placeholder{color:rgba(246,244,239,.45)}
.cta-row input:focus{outline:none;border-bottom-color:var(--brand)}
.cta-row .btn{flex:0 0 auto;height:50px}
.form-msg{min-height:22px;font-size:13.5px}
.form-msg.is-err{color:var(--err)}
.form-msg.is-ok{color:var(--brand)}
.cta-fine{font-size:13px;color:var(--dark-muted)}

/* ---------- back links ---------- */
.back-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.back-card{
  display:flex;flex-direction:column;gap:10px;padding:26px 24px;border-radius:var(--r-card);
  border:1px solid var(--line);background:var(--surface);box-shadow:var(--sh-1);
  transition:transform .24s cubic-bezier(.2,.7,.3,1),box-shadow .24s ease,border-color .24s ease;
}
.back-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:#d7d2c8}
.back-card .k{font-size:13px;letter-spacing:.06em;color:var(--muted)}
.back-card h3{font-size:1.06rem;font-weight:700;color:var(--ink)}
.back-card p{font-size:14.5px;color:var(--muted);line-height:1.75}
.back-card .go{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--ink);margin-top:4px}
.back-card:hover .go svg{transform:translateX(4px)}
.back-card .go svg{transition:transform .22s ease}

/* ---------- footer ---------- */
.site-footer{background:var(--dark);color:var(--dark-text);padding:clamp(56px,7vw,88px) 0 28px}
.footer-grid{display:grid;grid-template-columns:4fr 2.5fr 2.5fr 3fr;gap:40px}
.footer-brand{display:flex;align-items:center;gap:10px;font-size:16px;font-weight:700;color:var(--dark-text);margin-bottom:16px}
.footer-brand .brand-mark{background:var(--brand);color:var(--ink)}
.footer-col p{font-size:14.5px;color:var(--dark-muted);line-height:1.8;margin-bottom:10px}
.footer-col h3{font-size:15px;font-weight:700;color:var(--dark-text);margin-bottom:18px}
.footer-col ul li{margin-bottom:12px}
.footer-col ul a{font-size:14.5px;color:var(--dark-muted);display:inline-block;transition:color .2s ease,transform .2s ease}
.footer-col ul a:hover{color:var(--brand);transform:translateX(2px)}
.social-row{display:flex;gap:10px;margin-top:20px}
.social-row a{
  width:38px;height:38px;border-radius:9px;border:1px solid rgba(255,255,255,.16);
  display:inline-flex;align-items:center;justify-content:center;color:var(--dark-muted);
  transition:color .2s ease,border-color .2s ease;
}
.social-row a:hover{color:var(--brand);border-color:var(--brand)}
.footer-bottom{
  margin-top:56px;padding-top:22px;border-top:1px solid rgba(255,255,255,.10);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:13px;color:var(--dark-muted);
}

/* ---------- back to top ---------- */
.to-top{
  position:fixed;right:24px;bottom:24px;width:46px;height:46px;border-radius:10px;
  background:var(--ink);color:var(--paper);display:inline-flex;align-items:center;justify-content:center;
  box-shadow:var(--sh-2);opacity:0;visibility:hidden;transform:translateY(10px);z-index:70;
  transition:opacity .25s ease,transform .25s ease,visibility .25s ease,background .22s ease,color .22s ease;
}
.to-top.is-in{opacity:1;visibility:visible;transform:translateY(0)}
.to-top:hover{background:var(--brand);color:var(--ink)}

/* reveal */
.js-ready .reveal{opacity:0;transform:translateY(12px)}
.js-ready .reveal.is-in{opacity:1;transform:none;transition:opacity .42s ease,transform .42s cubic-bezier(.2,.7,.3,1)}

/* ---------- responsive ---------- */
@media (max-width:1023px){
  .nav-main,.header-actions .btn-primary,.header-actions .icon-btn#searchToggle{display:none}
  .burger{display:inline-flex}
  .hero-grid{grid-template-columns:1fr;gap:36px}
  .hero-media img{aspect-ratio:16/10}
  .stat-grid{grid-template-columns:repeat(2,1fr)}
  .stat-item:nth-child(3){border-left:0}
  .stat-item:nth-child(1),.stat-item:nth-child(2){border-bottom:1px solid var(--line)}
  .explain{grid-template-columns:1fr;gap:36px}
  .genre-grid{grid-template-columns:repeat(2,1fr)}
  .steps{grid-template-columns:repeat(2,1fr)}
  .feature-grid{grid-template-columns:1fr}
  .cta-grid{grid-template-columns:1fr;gap:32px}
  .back-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:767px){
  body{font-size:16px;line-height:1.8}
  .wrap{padding:0 20px}
  .header-inner{height:62px;gap:12px}
  .brand-name{font-size:15px}
  .sec-head{flex-direction:column;align-items:flex-start;gap:14px;margin-bottom:28px}
  .sec-head p{padding-left:0}
  .sec-head h2{padding-left:0}
  .sec-head h2::before{position:static;display:block;width:28px;height:4px;margin-bottom:12px}
  .rail-card{flex:0 0 84vw}
  .rail-head{margin-left:0}
  .feature-main{grid-template-columns:1fr}
  .feature-main .fm-media img{min-height:200px;aspect-ratio:16/9}
  .feature-main .fm-body{padding:26px 22px}
  .genre-grid,.steps,.footer-grid,.stat-grid{grid-template-columns:1fr}
  .stat-item{border-left:0;border-bottom:1px solid var(--line);padding:22px 0}
  .stat-item:last-child{border-bottom:0}
  .rule-item{grid-template-columns:42px 1fr}
  .cta-row{flex-direction:column}
  .cta-row .btn{width:100%}
  .footer-bottom{flex-direction:column}
  .to-top{right:16px;bottom:16px}
}
@media (min-width:1440px){
  .wrap{max-width:1280px}
  .hero h1{font-size:3.9rem}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
  html{scroll-behavior:auto}
  .js-ready .reveal{opacity:1;transform:none}
}

/* roulang page: category4 */
:root{
  --ink:#14161A;
  --ink-2:#2A2D33;
  --dark:#101215;
  --paper:#F6F4EF;
  --surface:#FFFFFF;
  --line:#E4E0D8;
  --muted:#6E6B66;
  --brand:#B4E33D;
  --accent:#FF5A36;
  --danger:#E5484D;
  --dark-text:#F6F4EF;
  --dark-muted:#A9A69F;
  --r-card:12px;
  --r-btn:8px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(20,22,26,.06);
  --sh-2:0 12px 32px rgba(20,22,26,.10);
  --ease:cubic-bezier(.2,.7,.3,1);
  --font:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --mono:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font);
  font-size:17px;
  line-height:1.85;
  color:var(--ink-2);
  background:var(--paper);
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto;}
a{color:inherit;text-decoration:none;transition:color .2s var(--ease);}
button,input,select,textarea{font:inherit;color:inherit;}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;}
ul,ol{padding:0;list-style:none;}
h1,h2,h3,h4{color:var(--ink);letter-spacing:-.01em;}
h1{font-size:clamp(2.1rem,4.6vw,3.5rem);font-weight:900;line-height:1.1;letter-spacing:-.02em;}
h2{font-size:clamp(1.6rem,3vw,2.3rem);font-weight:700;line-height:1.22;}
h3{font-size:1.16rem;font-weight:600;line-height:1.4;}
p{font-size:17px;line-height:1.85;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:4px;}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0;}
.wrap{width:100%;max-width:1200px;margin:0 auto;padding:0 32px;}
.num{font-variant-numeric:tabular-nums;}
.mono{font-family:var(--mono);font-variant-numeric:tabular-nums;}

/* ============ HEADER ============ */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(255,255,255,.96);
  border-bottom:1px solid var(--line);
  transition:background .25s var(--ease),box-shadow .25s var(--ease),backdrop-filter .25s var(--ease);
}
.site-header.is-scrolled{
  background:rgba(255,255,255,.92);
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
  box-shadow:0 1px 12px rgba(20,22,26,.07);
}
.header-inner{
  display:flex;align-items:center;gap:28px;
  height:72px;
  transition:height .25s var(--ease);
}
.site-header.is-scrolled .header-inner{height:60px;}
.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto;}
.brand-mark{
  width:34px;height:34px;border-radius:9px;background:var(--ink);color:var(--brand);
  display:inline-flex;align-items:center;justify-content:center;
  font-size:13px;font-weight:800;letter-spacing:.02em;font-family:var(--mono);
}
.brand-name{font-weight:800;font-size:1.05rem;color:var(--ink);letter-spacing:-.01em;white-space:nowrap;}
.nav-main{display:flex;align-items:center;gap:6px;margin-left:auto;}
.nav-main > a{
  position:relative;
  padding:8px 12px;
  font-size:.95rem;color:var(--ink-2);
  border-radius:6px;
  white-space:nowrap;
}
.nav-main > a::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;
  background:var(--brand);transform:scaleX(0);transform-origin:left;
  transition:transform .2s var(--ease);
}
.nav-main > a:hover{color:var(--ink);}
.nav-main > a:hover::after{transform:scaleX(1);}
.nav-main > a.is-active{color:var(--ink);font-weight:700;}
.nav-main > a.is-active::after{transform:scaleX(1);}
.header-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.icon-btn{
  width:40px;height:40px;border-radius:var(--r-btn);
  border:1px solid var(--line);background:var(--surface);color:var(--ink);
  display:inline-flex;align-items:center;justify-content:center;cursor:pointer;
  transition:background .2s var(--ease),border-color .2s var(--ease),color .2s var(--ease);
}
.icon-btn:hover{background:var(--ink);color:var(--paper);border-color:var(--ink);}
.burger{display:none;}
.search-panel{border-top:1px solid var(--line);background:var(--surface);padding:18px 0 22px;}
.search-form{display:flex;gap:12px;}
.search-form input{
  flex:1;min-height:46px;padding:10px 16px;
  border:1px solid var(--line);border-radius:var(--r-btn);
  background:var(--paper);outline:none;
  transition:border-color .2s var(--ease),background .2s var(--ease);
}
.search-form input:focus{border-color:var(--brand);background:var(--surface);}
.search-hint{margin-top:10px;font-size:13px;color:var(--muted);}
.drawer-head,.drawer-foot{display:none;}

/* ============ BUTTONS ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:46px;padding:0 22px;
  border-radius:var(--r-btn);border:1px solid transparent;
  font-size:.95rem;font-weight:600;cursor:pointer;
  transition:background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease),transform .2s var(--ease);
}
.btn svg{transition:transform .2s var(--ease);}
.btn:hover svg{transform:translateX(4px);}
.btn-primary{background:var(--ink);color:var(--paper);}
.btn-primary:hover{background:var(--brand);color:var(--ink);}
.btn-brand{background:var(--brand);color:var(--ink);}
.btn-brand:hover{background:var(--ink);color:var(--paper);}
.btn-ghost{background:transparent;border-color:var(--ink);color:var(--ink);}
.btn-ghost:hover{background:var(--ink);color:var(--paper);}
.btn-sm{min-height:38px;padding:0 16px;font-size:.875rem;}
.btn-block{width:100%;}

/* ============ HERO ============ */
.page-hero{position:relative;padding:64px 0 88px;overflow:hidden;}
.page-hero::before{
  content:"";position:absolute;top:-180px;right:-140px;width:520px;height:520px;border-radius:50%;
  background:radial-gradient(circle,rgba(180,227,61,.28),rgba(180,227,61,0) 68%);
  pointer-events:none;
}
.hero-grid{position:relative;display:grid;grid-template-columns:1.25fr 1fr;gap:56px;align-items:center;}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--muted);margin-bottom:22px;}
.crumb a:hover{color:var(--ink);}
.crumb span.sep{opacity:.55;}
.pill{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:var(--r-pill);
  border:1px solid rgba(255,90,54,.4);color:var(--accent);
  font-size:13px;font-weight:600;letter-spacing:.04em;background:rgba(255,90,54,.06);
}
.pill.pill-plain{border-color:var(--line);color:var(--ink-2);background:var(--surface);letter-spacing:.02em;}
.hero-title{margin:18px 0 18px;}
.hero-sub{font-size:clamp(1.02rem,1.5vw,1.2rem);line-height:1.75;color:var(--muted);max-width:60ch;}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px;}
.hero-stats{
  display:grid;grid-template-columns:repeat(3,1fr);gap:24px;
  margin-top:44px;padding-top:26px;border-top:1px solid var(--line);
}
.hero-stats .stat-n{font-size:1.6rem;font-weight:800;color:var(--ink);line-height:1.2;}
.hero-stats .stat-l{font-size:13px;color:var(--muted);margin-top:4px;}
.hero-figure{position:relative;}
.hero-figure img{
  width:100%;aspect-ratio:1/1;object-fit:cover;
  border-radius:var(--r-card);border:1px solid var(--line);
}
.hero-figure .swatch{
  position:absolute;left:-18px;bottom:-18px;width:96px;height:96px;
  background:var(--brand);border-radius:var(--r-card);z-index:-1;
}
.hero-figure figcaption{
  margin-top:12px;font-size:13px;color:var(--muted);
}

/* ============ SECTIONS ============ */
.section{padding:96px 0;}
.section-tight{padding:72px 0;}
.section-paper{background:var(--paper);}
.section-surface{background:var(--surface);}
.section-dark{background:var(--dark);color:var(--dark-muted);}
.section-dark h2,.section-dark h3{color:var(--dark-text);}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:44px;}
.section-head .eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;letter-spacing:.1em;color:var(--muted);margin-bottom:12px;text-transform:uppercase;
}
.section-head .eyebrow::before{content:"";width:12px;height:2px;background:var(--brand);display:inline-block;}
.section-desc{margin-top:14px;color:var(--muted);max-width:64ch;font-size:1rem;}
.link-more{font-size:.92rem;font-weight:600;color:var(--ink);white-space:nowrap;border-bottom:1px solid transparent;transition:border-color .2s var(--ease);}
.link-more:hover{border-color:var(--brand);}

/* ============ SPLIT LAYOUT ============ */
.split{display:grid;grid-template-columns:.85fr 1.15fr;gap:56px;align-items:start;}
.split .aside-sticky{position:sticky;top:104px;}
.risk-list li{
  display:flex;gap:12px;padding:14px 0;border-bottom:1px solid var(--line);
  font-size:.97rem;color:var(--ink-2);
}
.risk-list li svg{flex:0 0 auto;margin-top:6px;color:var(--accent);}
.ability-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;}
.ability-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  padding:28px;box-shadow:var(--sh-1);
  transition:transform .24s var(--ease),box-shadow .24s var(--ease),border-color .24s var(--ease);
}
.ability-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:#D8D3C8;}
.ability-card .tag{
  display:inline-block;padding:3px 10px;border-radius:var(--r-pill);
  background:rgba(255,90,54,.08);color:var(--accent);
  font-size:12px;font-weight:700;letter-spacing:.06em;margin-bottom:14px;
}
.ability-card h3{margin-bottom:10px;}
.ability-card p{font-size:.96rem;color:var(--muted);}

/* ============ STEP LIST ============ */
.step-list{margin-top:8px;border-top:1px solid var(--line);}
.step-item{
  display:grid;grid-template-columns:120px 1fr;gap:32px;
  padding:36px 0;border-bottom:1px solid var(--line);
  transition:background .24s var(--ease);
}
.step-item:hover{background:rgba(255,255,255,.7);}
.step-num{
  font-family:var(--mono);font-size:2.6rem;font-weight:700;color:var(--ink);
  line-height:1;letter-spacing:-.03em;
}
.step-num em{display:block;font-style:normal;font-size:12px;letter-spacing:.14em;color:var(--muted);margin-top:10px;font-family:var(--font);}
.step-body h3{margin-bottom:10px;}
.step-body p{font-size:.98rem;color:var(--muted);max-width:70ch;}
.step-meta{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px;}
.chip{
  padding:4px 12px;border-radius:var(--r-pill);border:1px solid var(--line);
  background:var(--surface);font-size:12.5px;color:var(--ink-2);
}
.chip-brand{border-color:rgba(180,227,61,.8);background:rgba(180,227,61,.16);color:var(--ink);font-weight:600;}

/* ============ SCENARIO / CARDS ============ */
.card-row{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;box-shadow:var(--sh-1);display:flex;flex-direction:column;
  transition:transform .24s var(--ease),box-shadow .24s var(--ease);
}
.card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);}
.card-media{overflow:hidden;aspect-ratio:16/9;background:var(--paper);}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform .24s var(--ease);}
.card:hover .card-media img{transform:scale(1.03);}
.card-body{padding:24px;display:flex;flex-direction:column;gap:10px;flex:1;}
.card-body h3{margin:0;}
.card-body p{font-size:.94rem;color:var(--muted);}
.card-foot{margin-top:auto;padding-top:8px;font-size:.9rem;font-weight:600;color:var(--ink);}
.card:hover .card-foot{color:var(--accent);}

/* ============ DARK STRIP ============ */
.dark-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-top:40px;}
.dark-cell{
  border:1px solid rgba(255,255,255,.10);border-radius:var(--r-card);
  padding:26px;background:var(--ink-2);
}
.dark-cell h3{margin-bottom:10px;font-size:1.05rem;}
.dark-cell p{font-size:.94rem;color:var(--dark-muted);}
.dark-cell .k{font-family:var(--mono);font-size:1.9rem;font-weight:700;color:var(--brand);line-height:1.1;margin-bottom:12px;display:block;}

/* ============ FAQ ============ */
.faq-wrap{max-width:800px;margin:0 auto;}
.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;background:none;border:0;text-align:left;cursor:pointer;
  font-size:1.08rem;font-weight:600;color:var(--ink);
}
.faq-q .plus{
  flex:0 0 auto;width:22px;height:22px;position:relative;
  transition:transform .24s var(--ease);
}
.faq-q .plus::before,.faq-q .plus::after{
  content:"";position:absolute;background:var(--ink);border-radius:2px;
  transition:background .24s var(--ease);
}
.faq-q .plus::before{left:50%;top:0;width:2px;height:100%;transform:translateX(-50%);}
.faq-q .plus::after{top:50%;left:0;height:2px;width:100%;transform:translateY(-50%);}
.faq-item.is-open .faq-q .plus{transform:rotate(45deg);}
.faq-item.is-open .faq-q .plus::before,.faq-item.is-open .faq-q .plus::after{background:var(--brand);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s var(--ease);}
.faq-a p{padding:0 0 24px;font-size:1rem;color:var(--muted);max-width:70ch;}

/* ============ CTA ============ */
.cta-band{background:var(--dark);color:var(--dark-muted);padding:88px 0;}
.cta-grid{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;}
.cta-grid h2{color:var(--dark-text);}
.cta-grid .cta-desc{margin-top:16px;color:var(--dark-muted);max-width:52ch;}
.cta-points{margin-top:26px;display:grid;gap:10px;}
.cta-points li{display:flex;gap:10px;font-size:.95rem;color:var(--dark-muted);}
.cta-points li svg{flex:0 0 auto;margin-top:6px;color:var(--brand);}
.form-card{
  background:var(--ink-2);border:1px solid rgba(255,255,255,.10);
  border-radius:var(--r-card);padding:32px;
}
.field{margin-bottom:20px;}
.field label{display:block;font-size:13px;letter-spacing:.04em;color:var(--dark-muted);margin-bottom:8px;}
.field input,.field select,.field textarea{
  width:100%;background:transparent;border:0;border-bottom:1px solid rgba(255,255,255,.22);
  color:var(--dark-text);padding:10px 0;outline:none;
  transition:border-color .2s var(--ease);
}
.field textarea{resize:vertical;min-height:88px;line-height:1.7;}
.field input::placeholder,.field textarea::placeholder{color:rgba(169,166,159,.7);}
.field input:focus,.field select:focus,.field textarea:focus{border-color:var(--brand);}
.field select option{color:var(--ink);}
.form-note{margin-top:14px;font-size:12.5px;color:var(--dark-muted);}
.form-msg{margin-top:12px;font-size:13px;min-height:20px;}
.form-msg.err{color:#E5484D;}
.form-msg.ok{color:var(--brand);}

/* ============ BACK TO TOP ============ */
.to-top{
  position:fixed;right:24px;bottom:24px;z-index:70;
  width:44px;height:44px;border-radius:var(--r-btn);
  background:var(--ink);color:var(--paper);border:0;cursor:pointer;
  display:inline-flex;align-items:center;justify-content:center;
  opacity:0;visibility:hidden;transform:translateY(8px);
  transition:opacity .24s var(--ease),transform .24s var(--ease),visibility .24s var(--ease),background .2s var(--ease);
  box-shadow:var(--sh-2);
}
.to-top.is-visible{opacity:1;visibility:visible;transform:translateY(0);}
.to-top:hover{background:var(--brand);color:var(--ink);}

/* ============ FOOTER ============ */
.site-footer{background:var(--dark);color:var(--dark-muted);padding:72px 0 28px;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px;}
.footer-col h3{color:var(--dark-text);font-size:1rem;margin-bottom:18px;font-weight:600;}
.footer-col ul{display:grid;gap:12px;}
.footer-col a{font-size:.94rem;color:var(--dark-muted);display:inline-block;}
.footer-col a:hover{color:var(--brand);transform:translateX(2px);}
.footer-col p{font-size:.92rem;color:var(--dark-muted);margin-bottom:10px;line-height:1.8;}
.footer-brand{display:flex;align-items:center;gap:10px;color:var(--dark-text);font-weight:800;font-size:1.05rem;margin-bottom:14px;}
.footer-brand .brand-mark{background:var(--brand);color:var(--ink);}
.social-row{display:flex;gap:10px;margin-top:18px;}
.social-row a{
  width:38px;height:38px;border-radius:var(--r-btn);
  border:1px solid rgba(255,255,255,.14);display:inline-flex;align-items:center;justify-content:center;
  color:var(--dark-muted);
}
.social-row a:hover{background:var(--brand);color:var(--ink);border-color:var(--brand);}
.footer-bottom{
  margin-top:52px;padding-top:22px;border-top:1px solid rgba(255,255,255,.10);
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;
  font-size:13px;color:var(--dark-muted);
}

/* ============ SCROLL REVEAL ============ */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .4s var(--ease),transform .4s var(--ease);}
.reveal.is-in{opacity:1;transform:none;}

/* ============ RESPONSIVE ============ */
@media (max-width:1024px){
  .wrap{padding:0 24px;}
  .nav-main{
    position:fixed;top:0;right:0;bottom:0;width:320px;max-width:86vw;z-index:90;
    background:var(--surface);flex-direction:column;align-items:stretch;gap:0;
    padding:0 20px 28px;margin:0;
    transform:translateX(102%);transition:transform .3s var(--ease);
    box-shadow:-12px 0 40px rgba(20,22,26,.16);overflow-y:auto;
  }
  body.menu-open .nav-main{transform:translateX(0);}
  .nav-main > a{padding:0 4px;height:48px;display:flex;align-items:center;font-size:1rem;border-bottom:1px solid var(--line);border-radius:0;}
  .nav-main > a::after{display:none;}
  .nav-main > a.is-active{color:var(--ink);font-weight:700;box-shadow:inset 3px 0 0 var(--brand);padding-left:12px;}
  .drawer-head{
    display:flex;align-items:center;justify-content:space-between;
    height:64px;border-bottom:1px solid var(--line);margin-bottom:8px;
  }
  .drawer-head .drawer-close{
    width:38px;height:38px;border-radius:var(--r-btn);border:1px solid var(--line);
    background:var(--surface);cursor:pointer;display:inline-flex;align-items:center;justify-content:center;
  }
  .drawer-foot{display:block;margin-top:26px;padding-top:22px;border-top:1px solid var(--line);}
  .drawer-foot .btn{margin-bottom:14px;}
  .drawer-foot p{font-size:13px;color:var(--muted);}
  .burger{display:inline-flex;}
  .hero-grid{grid-template-columns:1fr;gap:40px;}
  .hero-figure{order:2;}
  .hero-figure .swatch{display:none;}
  .split{grid-template-columns:1fr;gap:40px;}
  .split .aside-sticky{position:static;}
  .ability-grid{grid-template-columns:1fr 1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .section{padding:72px 0;}
  .section-tight{padding:56px 0;}
}
@media (max-width:768px){
  body{font-size:16px;}
  p{font-size:16px;}
  .header-inner{gap:14px;height:64px;}
  .site-header.is-scrolled .header-inner{height:56px;}
  .brand-name{font-size:.98rem;}
  .step-item{grid-template-columns:1fr;gap:14px;padding:28px 0;}
  .step-num{font-size:2rem;}
  .card-row{grid-template-columns:1fr;}
  .dark-grid{grid-template-columns:1fr;}
  .cta-grid{grid-template-columns:1fr;gap:36px;}
  .hero-stats{grid-template-columns:1fr 1fr;gap:20px;}
  .section-head{flex-direction:column;align-items:flex-start;gap:12px;margin-bottom:32px;}
  .cta-band{padding:64px 0;}
}
@media (max-width:520px){
  .wrap{padding:0 20px;}
  .ability-grid{grid-template-columns:1fr;}
  .hero-stats{grid-template-columns:1fr;}
  .hero-cta .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;}
  .search-form{flex-direction:column;}
  .brand-name{max-width:9.5em;overflow:hidden;text-overflow:ellipsis;}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;}
  html{scroll-behavior:auto;}
  .reveal{opacity:1;transform:none;}
}

/* roulang page: category5 */
:root{
  --ink:#14161A; --ink-2:#2A2D33; --dark:#101215; --paper:#F6F4EF; --surface:#FFFFFF;
  --line:#E4E0D8; --muted:#6E6B66; --brand:#B4E33D; --accent:#FF5A36;
  --dark-text:#F6F4EF; --dark-muted:#A9A69F; --dark-line:rgba(255,255,255,.10);
  --r-card:12px; --r-img:12px; --r-btn:8px; --r-pill:999px;
  --sh-1:0 1px 2px rgba(20,22,26,.06);
  --sh-2:0 12px 32px rgba(20,22,26,.10);
  --wrap:1200px;
  --font:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --mono:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;background:var(--paper);color:var(--ink-2);font-family:var(--font);
  font-size:17px;line-height:1.85;font-variant-numeric:tabular-nums;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
h1,h2,h3,h4,p,ul,ol,figure{margin:0}
ul,ol{padding:0;list-style:none}
button,input{font:inherit;color:inherit}
button{background:none;border:0;cursor:pointer}
a:focus-visible,button:focus-visible,input:focus-visible{outline:2px solid var(--brand);outline-offset:2px}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
.wrap{width:100%;max-width:var(--wrap);margin:0 auto;padding:0 32px}
@media (max-width:640px){.wrap{padding:0 20px}}

/* ---------- header ---------- */
.site-header{position:sticky;top:0;z-index:60;background:#fff;border-bottom:1px solid var(--line);transition:height .25s cubic-bezier(.2,.7,.3,1),box-shadow .25s,background .25s}
.header-inner{display:flex;align-items:center;gap:28px;height:72px;transition:height .25s cubic-bezier(.2,.7,.3,1)}
.site-header.is-scrolled{background:rgba(255,255,255,.92);backdrop-filter:blur(10px);box-shadow:0 2px 14px rgba(20,22,26,.07)}
.site-header.is-scrolled .header-inner{height:60px}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.brand-mark{width:32px;height:32px;border-radius:9px;background:var(--ink);color:var(--brand);font-family:var(--mono);font-size:13px;font-weight:700;display:flex;align-items:center;justify-content:center;letter-spacing:.02em}
.brand-name{font-size:17px;font-weight:800;color:var(--ink);letter-spacing:-.01em;white-space:nowrap}
.nav-main{display:flex;align-items:center;gap:22px;margin-left:auto}
.nav-main a{position:relative;font-size:15px;color:var(--ink-2);padding:8px 0;white-space:nowrap;transition:color .18s}
.nav-main a::after{content:"";position:absolute;left:0;bottom:0;height:2px;width:0;background:var(--brand);transition:width .2s cubic-bezier(.2,.7,.3,1)}
.nav-main a:hover{color:var(--ink)}
.nav-main a:hover::after{width:100%}
.nav-main a.is-active{color:var(--ink);font-weight:700}
.nav-main a.is-active::after{width:100%}
.header-actions{display:flex;align-items:center;gap:12px;margin-left:auto}
.nav-main+.header-actions{margin-left:0}
.icon-btn{width:40px;height:40px;border-radius:var(--r-btn);border:1px solid var(--line);display:flex;align-items:center;justify-content:center;color:var(--ink);background:#fff;transition:background .2s,border-color .2s,transform .2s}
.icon-btn:hover{background:var(--paper);border-color:#d6d1c6}
.burger{display:none}
.search-panel{border-top:1px solid var(--line);background:#fff}
.search-panel[hidden]{display:none}
.search-panel .wrap{padding-top:16px;padding-bottom:16px}
.search-form{display:flex;gap:10px;max-width:640px}
.search-form input{flex:1;height:44px;border:1px solid var(--line);border-radius:var(--r-btn);padding:0 14px;background:var(--paper)}
.search-form input:focus{border-color:var(--brand);background:#fff}
.search-hint{font-size:13px;color:var(--muted);margin-top:8px}

/* ---------- buttons ---------- */
.btn{display:inline-flex;align-items:center;gap:8px;border-radius:var(--r-btn);padding:12px 20px;font-size:15px;font-weight:600;line-height:1;border:1px solid transparent;transition:background .22s,color .22s,border-color .22s,transform .22s}
.btn-sm{padding:10px 16px;font-size:14px;min-height:40px}
.btn-primary{background:var(--ink);color:var(--paper)}
.btn-primary:hover{background:var(--brand);color:var(--ink)}
.btn-primary:hover .btn-arrow{transform:translateX(4px)}
.btn-outline{border-color:var(--ink);color:var(--ink);background:transparent}
.btn-outline:hover{background:var(--ink);color:var(--paper)}
.btn-brand{background:var(--brand);color:var(--ink)}
.btn-brand:hover{background:#a4d232}
.btn-arrow{transition:transform .22s}

/* ---------- page hero ---------- */
.page-hero{position:relative;overflow:hidden;border-bottom:1px solid var(--line)}
.page-hero::after{content:"";position:absolute;top:-120px;right:-80px;width:420px;height:420px;border-radius:50%;background:radial-gradient(circle,rgba(180,227,61,.28),transparent 68%)}
.page-hero .wrap{position:relative;z-index:2;padding-top:72px;padding-bottom:72px}
.hero-inner{display:grid;grid-template-columns:7fr 5fr;gap:48px;align-items:center}
.hero-copy{max-width:640px}
.pill{display:inline-flex;align-items:center;gap:8px;border-radius:var(--r-pill);border:1px solid var(--line);background:#fff;padding:6px 14px;font-size:13px;letter-spacing:.06em;color:var(--ink)}
.pill .dot{width:6px;height:6px;border-radius:50%;background:var(--accent)}
.page-hero h1{font-size:clamp(2.4rem,5.2vw,4.25rem);font-weight:900;line-height:1.08;letter-spacing:-.02em;color:var(--ink);margin:20px 0 0}
.hero-sub{font-size:clamp(1.05rem,1.6vw,1.25rem);line-height:1.7;color:var(--muted);margin-top:18px;max-width:60ch}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px}
.hero-stats{display:flex;flex-wrap:wrap;gap:40px;margin-top:44px;padding-top:26px;border-top:1px solid var(--line)}
.stat-num{font-size:1.75rem;font-weight:800;color:var(--ink);font-variant-numeric:tabular-nums;line-height:1.2}
.stat-label{font-size:13px;color:var(--muted);margin-top:6px}
.hero-media{position:relative}
.hero-media img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--r-img);border:1px solid var(--line)}
.hero-media::before{content:"";position:absolute;left:-16px;bottom:-16px;width:104px;height:104px;background:var(--brand);border-radius:14px;z-index:-1}

/* ---------- sections ---------- */
.section{padding:104px 0}
.section.tight{padding:80px 0}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:44px;flex-wrap:wrap}
.section-head p{color:var(--muted);font-size:16px;max-width:60ch;margin-top:12px}
h2{font-size:clamp(1.6rem,3vw,2.4rem);font-weight:700;line-height:1.2;color:var(--ink);letter-spacing:-.01em}
h2::before{content:"";display:block;width:12px;height:3px;background:var(--brand);margin-bottom:14px}
h3{font-size:1.15rem;font-weight:600;line-height:1.35;color:var(--ink)}
.link-more{font-size:15px;font-weight:600;color:var(--ink);display:inline-flex;gap:6px;align-items:center;border-bottom:2px solid transparent;transition:border-color .2s,color .2s}
.link-more:hover{border-color:var(--brand)}
.dark-band{background:var(--dark);color:var(--dark-text)}
.dark-band h2,.dark-band h3{color:var(--dark-text)}
.dark-band h2::before{background:var(--brand)}
.dark-band p{color:var(--dark-muted)}

/* ---------- grid cards ---------- */
.grid-cards{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-1);display:flex;flex-direction:column;transition:transform .24s cubic-bezier(.2,.7,.3,1),box-shadow .24s cubic-bezier(.2,.7,.3,1),border-color .24s}
.card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:#d8d3c8}
.card-media{overflow:hidden;background:var(--paper)}
.card-media img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .3s cubic-bezier(.2,.7,.3,1)}
.card:hover .card-media img{transform:scale(1.03)}
.card-body{padding:24px;display:flex;flex-direction:column;gap:12px;flex:1}
.tag{display:inline-flex;align-items:center;align-self:flex-start;border:1px solid var(--accent);color:var(--accent);border-radius:var(--r-pill);font-size:12px;letter-spacing:.06em;padding:4px 12px;line-height:1.4}
.card-body p{font-size:15.5px;color:var(--ink-2);line-height:1.75}
.card-foot{margin-top:auto;padding-top:8px;font-size:14px;font-weight:600;color:var(--ink);display:inline-flex;align-items:center;gap:6px}
.card:hover .card-foot{color:var(--accent)}

/* ---------- flow ---------- */
.flow{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;counter-reset:step}
.flow-item{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);padding:28px;box-shadow:var(--sh-1);position:relative;transition:transform .24s cubic-bezier(.2,.7,.3,1),box-shadow .24s}
.flow-item:hover{transform:translateY(-4px);box-shadow:var(--sh-2)}
.flow-num{font-family:var(--mono);font-size:14px;font-weight:700;color:var(--ink);background:var(--brand);border-radius:var(--r-pill);padding:4px 12px;display:inline-block}
.flow-item h3{margin:18px 0 10px}
.flow-item p{font-size:15.5px;margin:0}

/* ---------- rule list ---------- */
.rule-wrap{display:grid;grid-template-columns:5fr 7fr;gap:48px;align-items:start}
.rule-list{border-top:1px solid var(--line)}
.rule-list li{display:grid;grid-template-columns:64px 1fr;gap:20px;padding:22px 0;border-bottom:1px solid var(--line)}
.rule-idx{font-family:var(--mono);font-size:15px;color:var(--accent);font-weight:700;letter-spacing:.02em}
.rule-list h3{font-size:1.05rem;margin-bottom:6px}
.rule-list p{font-size:15.5px;color:var(--ink-2)}
.rule-shot img{width:100%;aspect-ratio:4/5;object-fit:cover;border-radius:var(--r-img);border:1px solid var(--line)}
.rule-shot figcaption{font-size:13px;color:var(--muted);margin-top:12px}

/* ---------- voices ---------- */
.voice-row{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.voice{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);padding:28px;box-shadow:var(--sh-1)}
.voice-top{display:flex;align-items:center;gap:12px;margin-bottom:16px}
.avatar{width:44px;height:44px;border-radius:50%;background:var(--paper);border:1px solid var(--line);display:flex;align-items:center;justify-content:center;font-weight:700;color:var(--ink);font-size:15px}
.voice-name{font-size:15px;font-weight:700;color:var(--ink)}
.voice-meta{font-size:13px;color:var(--muted)}
.voice p{font-size:15.5px}

/* ---------- faq ---------- */
.faq{max-width:800px;margin:0 auto;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;text-align:left;padding:22px 0;font-size:17.5px;font-weight:600;color:var(--ink);min-height:44px}
.faq-plus{flex:0 0 auto;width:26px;height:26px;border-radius:50%;border:1px solid var(--line);display:flex;align-items:center;justify-content:center;transition:transform .25s cubic-bezier(.2,.7,.3,1),border-color .25s,background .25s,color .25s}
.faq-item.is-open .faq-plus{transform:rotate(45deg);border-color:var(--brand);background:var(--brand);color:var(--ink)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s cubic-bezier(.2,.7,.3,1)}
.faq-a p{padding:0 0 24px;font-size:16px;line-height:1.8;color:var(--ink-2);max-width:70ch}

/* ---------- cta ---------- */
.cta-grid{display:grid;grid-template-columns:6fr 5fr;gap:48px;align-items:center}
.cta-form{display:flex;gap:12px;flex-wrap:wrap;align-items:flex-end}
.field{flex:1;min-width:240px}
.field label{display:block;font-size:13px;letter-spacing:.06em;color:var(--dark-muted);margin-bottom:8px}
.field input{width:100%;height:48px;background:transparent;border:0;border-bottom:1px solid var(--dark-line);color:var(--dark-text);padding:0 2px}
.field input::placeholder{color:#7d7a74}
.field input:focus{outline:none;border-bottom-color:var(--brand)}
.form-msg{font-size:14px;margin-top:12px;min-height:22px}
.form-msg.err{color:#E5484D}
.form-msg.ok{color:var(--brand)}

/* ---------- placeholder grid ---------- */
.hold-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.hold{border:1px dashed #cfc9bc;border-radius:var(--r-card);min-height:150px;display:flex;flex-direction:column;justify-content:center;padding:24px;background:rgba(255,255,255,.5)}
.hold strong{font-size:15px;color:var(--ink)}
.hold span{font-size:13px;color:var(--muted);margin-top:8px}

/* ---------- footer ---------- */
.site-footer{background:var(--dark);color:var(--dark-text);padding:80px 0 0;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:56px}
.footer-brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:16px;margin-bottom:16px}
.footer-col h3{font-size:14px;letter-spacing:.06em;color:var(--dark-text);margin-bottom:18px}
.footer-col p{font-size:14px;color:var(--dark-muted);line-height:1.8;margin-bottom:10px}
.footer-col ul li{margin-bottom:12px}
.footer-col ul a{font-size:14px;color:var(--dark-muted);display:inline-block;transition:color .2s,transform .2s}
.footer-col ul a:hover{color:var(--brand);transform:translateX(2px)}
.social-row{display:flex;gap:10px;margin-top:18px}
.social-row a{width:38px;height:38px;border:1px solid var(--dark-line);border-radius:10px;display:flex;align-items:center;justify-content:center;color:var(--dark-muted);transition:color .2s,border-color .2s}
.social-row a:hover{color:var(--brand);border-color:var(--brand)}
.footer-bottom{border-top:1px solid var(--dark-line);padding:22px 0 32px;display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:13px;color:var(--dark-muted)}

/* ---------- to-top ---------- */
.to-top{position:fixed;right:24px;bottom:24px;width:46px;height:46px;border-radius:12px;background:var(--ink);color:var(--paper);display:flex;align-items:center;justify-content:center;opacity:0;visibility:hidden;transition:opacity .25s,visibility .25s,background .2s;z-index:70}
.to-top.is-on{opacity:1;visibility:visible}
.to-top:hover{background:var(--brand);color:var(--ink)}

/* ---------- reveal ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .38s cubic-bezier(.2,.7,.3,1),transform .38s cubic-bezier(.2,.7,.3,1)}
.reveal.is-in{opacity:1;transform:none}

/* ---------- drawer (mobile) ---------- */
.drawer-extra{display:none}
@media (max-width:1023px){
  .burger{display:flex}
  .header-actions .btn{display:none}
  .nav-main{position:fixed;top:0;right:0;bottom:0;width:min(86vw,360px);background:#fff;flex-direction:column;align-items:flex-start;gap:0;padding:0 24px 28px;transform:translateX(104%);transition:transform .3s cubic-bezier(.2,.7,.3,1);box-shadow:-16px 0 40px rgba(20,22,26,.14);overflow-y:auto;z-index:80}
  .nav-main.is-open{transform:translateX(0)}
  .nav-main a{width:100%;line-height:48px;font-size:16px;border-bottom:1px solid var(--line)}
  .nav-main a::after{display:none}
  .nav-main a.is-active{color:var(--ink)}
  .drawer-extra{display:block;width:100%;margin-top:24px}
  .drawer-extra .btn{display:inline-flex;width:100%;justify-content:center;margin-bottom:16px}
  .drawer-extra p{font-size:14px;color:var(--muted)}
  .hero-inner{grid-template-columns:1fr;gap:32px}
  .page-hero .wrap{padding-top:52px;padding-bottom:56px}
  .section{padding:72px 0}
  .section.tight{padding:60px 0}
  .grid-cards,.voice-row,.hold-grid{grid-template-columns:repeat(2,1fr)}
  .flow{grid-template-columns:repeat(2,1fr)}
  .rule-wrap,.cta-grid{grid-template-columns:1fr;gap:32px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:640px){
  body{font-size:16px}
  .grid-cards,.voice-row,.hold-grid,.flow{grid-template-columns:1fr}
  .hero-stats{gap:24px}
  .brand-name{font-size:15px}
  .hero-media::before{display:none}
  .footer-grid{grid-template-columns:1fr;padding-bottom:40px}
  .footer-bottom{flex-direction:column}
  .section{padding:56px 0}
}
@media (min-width:1440px){
  :root{--wrap:1280px}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important}
  .reveal{opacity:1;transform:none}
}