/* roulang page: index */
:root{
  --ink:#16131A;
  --ink-2:#241F2B;
  --accent:#E0763C;
  --accent-hover:#C85F2A;
  --muted:#8C8695;
  --line:#E7E3DE;
  --bg:#FBFAF8;
  --surface:#FFFFFF;
  --surface-alt:#F2EFEA;
  --text:#3A3540;
  --shadow-1:0 1px 2px rgba(22,19,26,.04), 0 8px 24px -12px rgba(22,19,26,.12);
  --shadow-2:0 2px 6px rgba(22,19,26,.06), 0 18px 42px -18px rgba(22,19,26,.24);
  --radius:14px;
  --radius-lg:20px;
  --radius-sm:12px;
  --ease:cubic-bezier(.22,.61,.36,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,p,figure,ul,ol{margin:0}
ul,ol{padding:0;list-style:none}
img{max-width:100%;display:block;border-style:none}
a{color:var(--accent);text-decoration:none;transition:color .2s var(--ease)}
a:hover{color:var(--accent-hover)}
button{font-family:inherit}
input,textarea,select{font-family:inherit;font-size:16px}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
.wrap{max-width:1240px;margin:0 auto;padding:0 20px;width:100%}
.section{padding:80px 0}
.section--tight{padding:56px 0}
.section--alt{background:var(--surface-alt)}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:32px;flex-wrap:wrap}
.section-title{font-size:clamp(24px,3vw,32px);line-height:1.25;font-weight:700;color:var(--ink);letter-spacing:-.01em}
.section-sub{font-size:13px;color:var(--muted);margin-top:8px;letter-spacing:.02em}
.link-more{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--accent)}
.link-more svg{transition:transform .2s var(--ease)}
.link-more:hover svg{transform:translateX(4px)}

/* ---------- Header ---------- */
.site-header{position:sticky;top:0;z-index:80;background:var(--surface);border-bottom:1px solid var(--line);transition:box-shadow .2s var(--ease)}
.site-header.is-stuck{box-shadow:var(--shadow-1)}
.nav-inner{display:flex;align-items:center;gap:28px;height:68px}
.brand{display:inline-flex;align-items:center;gap:10px;color:var(--ink);font-weight:700;font-size:18px;letter-spacing:-.01em;white-space:nowrap}
.brand:hover{color:var(--ink)}
.brand svg{flex:0 0 auto}
.nav-links{display:flex;align-items:center;gap:26px;margin-left:8px}
.nav-link{position:relative;display:inline-block;padding:22px 0;font-size:15px;color:var(--text);font-weight:500}
.nav-link::after{content:"";position:absolute;left:0;right:0;bottom:14px;height:2px;background:var(--accent);transform:scaleX(0);transform-origin:center;transition:transform .22s var(--ease)}
.nav-link:hover{color:var(--ink)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.active{color:var(--accent);font-weight:600}
.nav-link.active::after{transform:scaleX(1)}
.nav-right{margin-left:auto;display:flex;align-items:center;gap:14px}
.nav-search{position:relative;display:flex;align-items:center}
.nav-search svg{position:absolute;left:14px;color:var(--muted);pointer-events:none}
.nav-search input{
  width:220px;height:42px;padding:0 16px 0 40px;border:1px solid var(--line);border-radius:999px;
  background:var(--bg);color:var(--text);font-size:14px;transition:border-color .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease);
}
.nav-search input::placeholder{color:var(--muted)}
.nav-search input:focus{outline:none;background:var(--surface);border-color:var(--accent);box-shadow:0 0 0 3px rgba(224,118,60,.16)}
.hamburger{display:none;width:42px;height:42px;border:1px solid var(--line);border-radius:12px;background:var(--surface);align-items:center;justify-content:center;cursor:pointer}
.hamburger span{display:block;width:16px;height:1.5px;background:var(--ink);position:relative}
.hamburger span::before,.hamburger span::after{content:"";position:absolute;left:0;width:16px;height:1.5px;background:var(--ink)}
.hamburger span::before{top:-5px}
.hamburger span::after{top:5px}

/* ---------- Buttons ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:46px;padding:0 26px;border-radius:999px;font-size:15px;font-weight:600;border:1.5px solid transparent;cursor:pointer;transition:transform .2s var(--ease),background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease)}
.btn-primary{background:var(--accent);color:#fff;box-shadow:0 10px 24px -14px rgba(224,118,60,.9)}
.btn-primary:hover{background:var(--accent-hover);color:#fff;transform:translateY(-1px)}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{background:transparent;color:var(--ink);border-color:rgba(22,19,26,.35)}
.btn-ghost:hover{border-color:var(--ink);color:var(--ink);transform:translateY(-1px)}
.btn-ghost-light{background:transparent;color:#fff;border-color:rgba(255,255,255,.6)}
.btn-ghost-light:hover{background:rgba(255,255,255,.1);color:#fff;transform:translateY(-1px)}
.btn-sm{height:40px;padding:0 20px;font-size:14px}
.btn-arrow{display:inline-flex;align-items:center;gap:8px;font-size:14px;font-weight:600;color:var(--accent);background:none;border:0;padding:0;cursor:pointer}
.btn-arrow svg{transition:transform .2s var(--ease)}
.btn-arrow:hover svg{transform:translateX(4px)}

/* ---------- Hero ---------- */
.hero{position:relative;min-height:min(72vh,620px);display:flex;align-items:center;overflow:hidden;background:var(--ink)}
.hero__bg{position:absolute;inset:0;background-image:url("/assets/images/backpic/back-1.webp");background-size:cover;background-position:center;transform:scale(1.02)}
.hero__overlay{position:absolute;inset:0;background:linear-gradient(90deg,rgba(22,19,26,.88) 0%,rgba(22,19,26,.62) 48%,rgba(22,19,26,.28) 100%),linear-gradient(0deg,rgba(22,19,26,.82) 0%,rgba(22,19,26,0) 60%)}
.hero__inner{position:relative;z-index:2;padding:96px 0 84px;width:100%}
.hero__eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:12px;letter-spacing:.16em;color:rgba(255,255,255,.72);text-transform:uppercase;margin-bottom:20px}
.hero__eyebrow::before{content:"";width:28px;height:1.5px;background:var(--accent)}
.hero__title{font-size:clamp(32px,5vw,56px);line-height:1.12;font-weight:800;letter-spacing:-.02em;color:#fff;max-width:15em}
.hero__sub{margin-top:20px;font-size:17px;line-height:1.8;color:rgba(255,255,255,.82);max-width:34em}
.hero__tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px}
.tag{display:inline-flex;align-items:center;height:30px;padding:0 14px;border-radius:999px;font-size:12px;letter-spacing:.06em;color:rgba(255,255,255,.86);border:1px solid rgba(255,255,255,.22);background:rgba(255,255,255,.06)}
.hero__actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:34px}

/* ---------- Stats strip ---------- */
.stats{background:var(--ink-2);border-radius:var(--radius-lg);padding:34px 32px;margin-top:-56px;position:relative;z-index:5;box-shadow:var(--shadow-2)}
.stats__grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.stat__num{font-size:30px;font-weight:800;color:#fff;letter-spacing:-.02em;line-height:1.1}
.stat__num em{font-style:normal;font-size:14px;font-weight:600;color:var(--accent);margin-left:6px;letter-spacing:.04em}
.stat__label{margin-top:8px;font-size:13px;color:#B9B3BE;line-height:1.7}

/* ---------- Rail ---------- */
.rail-head{display:flex;align-items:center;justify-content:space-between;gap:20px;margin-bottom:24px}
.rail-nav{display:flex;gap:10px}
.rail-btn{width:42px;height:42px;border-radius:50%;border:1px solid var(--line);background:var(--surface);color:var(--ink);display:inline-flex;align-items:center;justify-content:center;cursor:pointer;transition:border-color .2s var(--ease),background .2s var(--ease),transform .2s var(--ease)}
.rail-btn:hover{border-color:var(--accent);color:var(--accent);transform:translateY(-1px)}
.rail-btn:active{transform:translateY(0)}
.rail{display:flex;gap:20px;overflow-x:auto;scroll-snap-type:x mandatory;padding:4px 4px 20px;scrollbar-width:none;-ms-overflow-style:none}
.rail::-webkit-scrollbar{display:none}
.poster{flex:0 0 228px;scroll-snap-align:start;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;transition:transform .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease)}
.poster:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:transparent}
.poster__img{position:relative;aspect-ratio:2/3;background:var(--surface-alt);overflow:hidden}
.poster__img img{width:100%;height:100%;object-fit:cover;transition:transform .35s var(--ease)}
.poster:hover .poster__img img{transform:scale(1.04)}
.poster__body{padding:14px 16px 18px}
.poster__title{font-size:15px;font-weight:600;color:var(--ink);line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.poster__meta{margin-top:8px;font-size:12px;color:var(--muted);letter-spacing:.04em}

/* ---------- Badge ---------- */
.badge{display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:999px;font-size:12px;letter-spacing:.04em;color:var(--accent);background:rgba(224,118,60,.10);white-space:nowrap}

/* ---------- Hot list ---------- */
.hot-card{position:relative;display:flex;gap:16px;align-items:flex-start;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:18px;height:100%;transition:transform .2s var(--ease),box-shadow .2s var(--ease)}
.hot-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2)}
.hot-card__index{position:absolute;top:6px;right:16px;font-size:44px;font-weight:800;line-height:1;color:var(--surface-alt);letter-spacing:-.04em;pointer-events:none}
.hot-card__thumb{flex:0 0 108px;aspect-ratio:4/3;border-radius:var(--radius-sm);overflow:hidden;background:var(--surface-alt);position:relative;z-index:1}
.hot-card__thumb img{width:100%;height:100%;object-fit:cover;transition:transform .35s var(--ease)}
.hot-card:hover .hot-card__thumb img{transform:scale(1.04)}
.hot-card__body{position:relative;z-index:1;min-width:0}
.hot-card__title{font-size:17px;font-weight:600;color:var(--ink);line-height:1.5}
.hot-card__desc{margin-top:8px;font-size:13px;color:var(--muted);line-height:1.75;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.hot-card__foot{margin-top:12px;display:flex;align-items:center;gap:10px;font-size:12px;color:var(--muted)}

/* ---------- Split sections ---------- */
.split{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}
.split--reverse .split__media{order:2}
.split__title{font-size:clamp(24px,3vw,32px);font-weight:700;color:var(--ink);line-height:1.3;letter-spacing:-.01em}
.split__text{margin-top:16px;font-size:15.5px;color:var(--text);line-height:1.9}
.points{margin-top:24px;display:grid;gap:14px}
.point{display:flex;gap:12px;align-items:flex-start;font-size:15px;color:var(--text)}
.point__dot{flex:0 0 auto;width:20px;height:20px;border-radius:50%;background:rgba(224,118,60,.12);color:var(--accent);display:inline-flex;align-items:center;justify-content:center;font-size:11px;font-weight:700;margin-top:5px}
.split__media{border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow-1);background:var(--surface-alt)}
.split__media img{width:100%;height:100%;aspect-ratio:4/3;object-fit:cover}

/* ---------- News / CMS ---------- */
.news-list{display:grid;grid-template-columns:repeat(2,1fr);gap:22px}
.news-card{display:flex;gap:18px;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:18px;color:inherit;transition:transform .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease)}
.news-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:transparent;color:inherit}
.news-card__thumb{flex:0 0 132px;aspect-ratio:4/3;border-radius:var(--radius-sm);overflow:hidden;background:var(--surface-alt);display:flex;align-items:center;justify-content:center}
.news-card__thumb img{width:100%;height:100%;object-fit:cover;transition:transform .35s var(--ease)}
.news-card:hover .news-card__thumb img{transform:scale(1.04)}
.thumb-plate{width:36px;height:36px;border-radius:10px;background:linear-gradient(135deg,rgba(22,19,26,.14),rgba(224,118,60,.22))}
.news-card__body{min-width:0;flex:1}
.news-card__meta{display:flex;align-items:center;gap:12px;flex-wrap:wrap;margin-bottom:8px}
.news-card__date{font-size:12px;color:var(--muted);letter-spacing:.04em}
.news-card__title{font-size:17px;font-weight:600;color:var(--ink);line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-card__desc{margin-top:8px;font-size:13.5px;color:var(--muted);line-height:1.75;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-empty{margin-top:8px;padding:56px 24px;border:1px dashed var(--line);border-radius:var(--radius);background:var(--surface);text-align:center;color:var(--muted);font-size:14px}
.news-empty__icon{display:inline-flex;width:44px;height:44px;border-radius:50%;background:var(--surface-alt);align-items:center;justify-content:center;margin-bottom:14px;color:var(--muted)}

/* ---------- FAQ ---------- */
.faq{max-width:860px;margin:0 auto;border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item summary{list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:20px;padding:24px 0;font-size:17px;font-weight:600;color:var(--ink);transition:color .2s var(--ease)}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{color:var(--accent)}
.faq-item summary::after{content:"";flex:0 0 auto;width:22px;height:22px;border-radius:50%;background:var(--surface-alt);position:relative;transition:transform .22s var(--ease),background .22s var(--ease)}
.faq-item summary::before{content:"";position:absolute;right:7px;width:8px;height:1.5px;background:var(--accent);margin-top:0;transform:translateY(0);z-index:2}
.faq-item summary{position:relative}
.faq-item summary .faq-plus{display:none}
.faq-item[open] summary::after{transform:rotate(45deg)}
.faq-body{padding:0 0 26px;font-size:15px;color:var(--muted);line-height:1.85;max-width:64em}
.faq-icon{position:absolute;right:0;top:50%;width:22px;height:22px;transform:translateY(-50%);pointer-events:none}
.faq-icon::before,.faq-icon::after{content:"";position:absolute;left:50%;top:50%;background:var(--accent);transform:translate(-50%,-50%)}
.faq-icon::before{width:9px;height:1.5px}
.faq-icon::after{width:1.5px;height:9px}

/* ---------- CTA band ---------- */
.cta-band{position:relative;border-radius:var(--radius-lg);overflow:hidden;background:var(--ink);padding:64px 40px;text-align:center;box-shadow:var(--shadow-2)}
.cta-band__bg{position:absolute;inset:0;background-image:url("/assets/images/backpic/back-2.webp");background-size:cover;background-position:center;opacity:.22}
.cta-band__overlay{position:absolute;inset:0;background:linear-gradient(180deg,rgba(22,19,26,.72),rgba(22,19,26,.92))}
.cta-band__inner{position:relative;z-index:2;max-width:720px;margin:0 auto}
.cta-band h2{font-size:clamp(24px,3.2vw,34px);font-weight:700;color:#fff;line-height:1.3;letter-spacing:-.01em}
.cta-band p{margin-top:16px;font-size:15.5px;color:rgba(255,255,255,.76);line-height:1.85}
.cta-band__actions{margin-top:30px;display:flex;justify-content:center;gap:14px;flex-wrap:wrap}

/* ---------- Footer ---------- */
.site-footer{background:var(--ink);color:#B9B3BE;margin-top:96px;padding:72px 0 0}
.foot-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px}
.foot-brand{display:inline-flex;align-items:center;gap:10px;color:#fff;font-weight:700;font-size:18px}
.foot-brand:hover{color:#fff}
.foot-desc{margin-top:16px;font-size:13.5px;line-height:1.85;color:#B9B3BE;max-width:30em}
.foot-contact{margin-top:18px;font-size:13.5px;color:#B9B3BE}
.foot-title{color:#fff;font-size:14px;font-weight:600;margin-bottom:18px;letter-spacing:.02em}
.foot-links{display:grid;gap:12px}
.foot-links a{color:#B9B3BE;font-size:14px}
.foot-links a:hover{color:var(--accent)}
.foot-bottom{margin-top:56px;border-top:1px solid rgba(255,255,255,.12);padding:24px 0 32px;display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:13px;color:#8C8695}

/* ---------- Drawer ---------- */
.drawer-mask{position:fixed;inset:0;background:rgba(22,19,26,.5);opacity:0;visibility:hidden;transition:opacity .25s var(--ease),visibility .25s var(--ease);z-index:90}
.drawer{position:fixed;top:0;right:0;width:280px;max-width:80%;height:100%;background:var(--surface);z-index:100;transform:translateX(100%);transition:transform .28s var(--ease);padding:24px 22px;overflow-y:auto;box-shadow:var(--shadow-2)}
.drawer.is-open{transform:translateX(0)}
.drawer-mask.is-open{opacity:1;visibility:visible}
.drawer__head{display:flex;align-items:center;justify-content:space-between;margin-bottom:22px}
.drawer__close{width:38px;height:38px;border-radius:10px;border:1px solid var(--line);background:var(--surface);color:var(--ink);cursor:pointer;font-size:16px;line-height:1}
.drawer__links{display:grid;gap:4px;margin-bottom:22px}
.drawer__links a{padding:13px 12px;border-radius:10px;color:var(--text);font-size:15px;font-weight:500}
.drawer__links a:hover{background:var(--surface-alt);color:var(--ink)}
.drawer__links a.active{color:var(--accent);background:rgba(224,118,60,.08);font-weight:600}
.drawer__search input{width:100%;height:44px;padding:0 16px;border:1px solid var(--line);border-radius:999px;background:var(--bg);font-size:14px}
.drawer__search input:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px rgba(224,118,60,.16)}
.drawer__cta{margin-top:16px;width:100%}

/* ---------- Responsive ---------- */
@media screen and (max-width:1024px){
  .nav-links{gap:20px}
  .nav-search input{width:180px}
  .stats__grid{grid-template-columns:repeat(2,1fr);gap:28px}
  .split{gap:36px}
  .foot-grid{grid-template-columns:1fr 1fr;gap:34px}
}
@media screen and (max-width:1023px){
  .nav-links,.nav-search{display:none}
  .hamburger{display:inline-flex}
  .section{padding:64px 0}
}
@media screen and (max-width:768px){
  .hero__inner{padding:72px 0 64px}
  .hero{min-height:460px}
  .stats{margin-top:-40px;padding:28px 22px}
  .split{grid-template-columns:1fr;gap:26px}
  .split--reverse .split__media{order:0}
  .news-list{grid-template-columns:1fr}
  .poster{flex:0 0 168px}
  .news-card__thumb{flex:0 0 104px}
  .cta-band{padding:48px 24px}
}
@media screen and (max-width:640px){
  .wrap{padding:0 16px}
  .section{padding:52px 0}
  .stats__grid{grid-template-columns:1fr 1fr;gap:22px}
  .hot-card__index{font-size:34px}
  .hero__title{font-size:clamp(28px,8vw,36px)}
  .faq-item summary{font-size:16px;padding:20px 0}
  .foot-grid{grid-template-columns:1fr 1fr}
  .foot-bottom{flex-direction:column}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;scroll-behavior:auto!important}
  .poster:hover,.news-card:hover,.hot-card:hover,.btn:hover{transform:none}
}

/* roulang page: category1 */
:root{
  --ink:#16131A;
  --ink-2:#241F2B;
  --accent:#E0763C;
  --accent-hover:#C85F2A;
  --muted:#8C8695;
  --line:#E7E3DE;
  --bg:#FBFAF8;
  --surface:#FFFFFF;
  --surface-alt:#F2EFEA;
  --text:#3A3540;
  --radius-card:14px;
  --radius-img:12px;
  --radius-block:20px;
  --shadow-1:0 1px 2px rgba(22,19,26,.04), 0 8px 24px -12px rgba(22,19,26,.12);
  --shadow-2:0 2px 4px rgba(22,19,26,.05), 0 18px 40px -16px rgba(22,19,26,.22);
  --t:200ms cubic-bezier(.22,.61,.36,1);
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",sans-serif;
  font-size:15px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border:0}
a{color:var(--accent);text-decoration:none;transition:color var(--t)}
a:hover{color:var(--accent-hover)}
button{font-family:inherit}
input,select,textarea{font-family:inherit}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:4px}
p{margin:0 0 1em}
h1,h2,h3,h4{margin:0;color:var(--ink);font-weight:700}
ul,ol{margin:0;padding:0}
li{list-style:none}
.wrap{width:100%;max-width:1240px;margin:0 auto;padding:0 20px}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:#fff;
  border-bottom:1px solid var(--line);
  transition:box-shadow var(--t);
}
.site-header.is-stuck{box-shadow:var(--shadow-1)}
.header-inner{height:68px;display:flex;align-items:center;gap:22px}
.brand{display:inline-flex;align-items:center;gap:10px;flex:none;color:var(--ink)}
.brand:hover{color:var(--ink)}
.brand-name{font-size:19px;font-weight:700;letter-spacing:-.01em;white-space:nowrap}
.nav-links{display:flex;align-items:center;gap:4px;margin-left:6px}
.nav-link{
  position:relative;display:inline-block;padding:22px 12px;
  font-size:15px;font-weight:500;color:var(--text);white-space:nowrap;
}
.nav-link:hover{color:var(--ink)}
.nav-link::after{
  content:"";position:absolute;left:50%;bottom:14px;height:2px;width:0;
  background:var(--accent);transform:translateX(-50%);
  transition:width var(--t);
}
.nav-link:hover::after{width:56%}
.nav-link.active{color:var(--accent);font-weight:600}
.nav-link.active::after{width:56%}
.header-actions{margin-left:auto;display:flex;align-items:center;gap:12px}
.search-box{
  display:flex;align-items:center;gap:8px;
  width:224px;height:40px;padding:0 14px;
  background:var(--surface-alt);
  border:1px solid var(--line);border-radius:999px;
  transition:border-color var(--t),background var(--t),box-shadow var(--t);
}
.search-box svg{flex:none}
.search-box input{
  width:100%;border:0;background:transparent;outline:none;
  font-size:14px;color:var(--text);
}
.search-box input::placeholder{color:var(--muted)}
.search-box:focus-within{
  background:#fff;border-color:var(--accent);
  box-shadow:0 0 0 3px rgba(224,118,60,.18);
}
.menu-toggle{
  display:none;align-items:center;justify-content:center;
  width:40px;height:40px;border:1px solid var(--line);border-radius:10px;
  background:#fff;cursor:pointer;transition:border-color var(--t),background var(--t);
}
.menu-toggle:hover{border-color:var(--accent)}
.menu-toggle span{display:block;width:16px;height:1.6px;background:var(--ink);position:relative}
.menu-toggle span::before,.menu-toggle span::after{
  content:"";position:absolute;left:0;width:16px;height:1.6px;background:var(--ink);transition:transform var(--t)
}
.menu-toggle span::before{top:-5px}
.menu-toggle span::after{top:5px}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 26px;border-radius:999px;
  font-size:15px;font-weight:600;line-height:1;cursor:pointer;
  border:1.5px solid transparent;
  transition:background var(--t),color var(--t),border-color var(--t),transform var(--t),box-shadow var(--t);
  white-space:nowrap;
}
.btn-primary{background:var(--accent);color:#fff;box-shadow:var(--shadow-1)}
.btn-primary:hover{background:var(--accent-hover);color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-2)}
.btn-primary:active{transform:translateY(0);box-shadow:var(--shadow-1)}
.btn-ghost{background:transparent;border-color:rgba(255,255,255,.6);color:#fff}
.btn-ghost:hover{background:rgba(255,255,255,.12);color:#fff;transform:translateY(-1px)}
.btn-outline{background:transparent;border-color:var(--ink);color:var(--ink)}
.btn-outline:hover{background:var(--ink);color:#fff;transform:translateY(-1px)}
.btn-sm{height:40px;padding:0 18px;font-size:14px}
.text-cta{
  display:inline-flex;align-items:center;gap:6px;
  font-size:15px;font-weight:600;color:var(--accent);
}
.text-cta svg{transition:transform var(--t)}
.text-cta:hover svg{transform:translateX(4px)}

/* ---------- drawer ---------- */
.drawer-mask{
  position:fixed;inset:0;background:rgba(22,19,26,.5);
  opacity:0;pointer-events:none;transition:opacity var(--t);z-index:70;
}
.drawer-mask.is-open{opacity:1;pointer-events:auto}
.drawer{
  position:fixed;top:0;right:0;z-index:80;
  width:280px;max-width:84vw;height:100%;
  background:#fff;padding:24px 22px;overflow-y:auto;
  transform:translateX(102%);transition:transform 260ms cubic-bezier(.22,.61,.36,1);
  box-shadow:-12px 0 40px -20px rgba(22,19,26,.4);
}
.drawer.is-open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px}
.drawer-head strong{font-size:16px;color:var(--ink)}
.drawer-close{
  width:36px;height:36px;border:1px solid var(--line);border-radius:10px;background:#fff;
  display:flex;align-items:center;justify-content:center;cursor:pointer;font-size:18px;color:var(--muted)
}
.drawer-close:hover{border-color:var(--accent);color:var(--accent)}
.drawer nav{display:flex;flex-direction:column;gap:2px;margin-bottom:20px}
.drawer nav a{
  padding:13px 4px;font-size:15px;font-weight:500;color:var(--text);
  border-bottom:1px solid var(--line);
}
.drawer nav a:hover{color:var(--accent)}
.drawer nav a.active{color:var(--accent);font-weight:600}
.drawer .drawer-cta{width:100%}

/* ---------- category hero ---------- */
.cat-hero{
  position:relative;overflow:hidden;background:var(--ink);color:#fff;
  min-height:360px;display:flex;align-items:center;
}
.cat-hero-bg{
  position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-1.webp');
  background-size:cover;background-position:center;
  opacity:.3;
}
.cat-hero::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(100deg,rgba(22,19,26,.95) 0%,rgba(22,19,26,.78) 50%,rgba(22,19,26,.5) 100%);
}
.cat-hero-inner{position:relative;z-index:2;width:100%;padding:56px 0 52px}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:rgba(255,255,255,.6)}
.crumb a{color:rgba(255,255,255,.72)}
.crumb a:hover{color:var(--accent)}
.crumb span.sep{color:rgba(255,255,255,.32)}
.crumb .current{color:var(--muted)}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;margin-top:22px;
  padding:6px 14px;border-radius:999px;
  background:rgba(224,118,60,.16);color:#F0A173;
  font-size:12px;font-weight:600;letter-spacing:.08em;line-height:1;
}
.eyebrow i{width:6px;height:6px;border-radius:50%;background:var(--accent);display:inline-block}
.cat-hero h1{
  margin:18px 0 14px;color:#fff;
  font-size:clamp(30px,4.6vw,52px);line-height:1.12;font-weight:800;letter-spacing:-.02em;
}
.cat-hero-sub{max-width:620px;font-size:16px;line-height:1.8;color:rgba(255,255,255,.78);margin:0 0 28px}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px}

/* ---------- sections ---------- */
.section{padding:80px 0}
.section.alt{background:var(--surface-alt)}
.section.tight{padding:64px 0}
.section-head{max-width:720px;margin-bottom:42px}
.section-head h2{font-size:clamp(24px,3vw,34px);line-height:1.25;font-weight:700;letter-spacing:-.01em}
.section-head p{margin:14px 0 0;font-size:15.5px;color:var(--muted);line-height:1.85}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center}

/* ---------- steps ---------- */
.steps-grid{margin-top:0}
.step-card{
  position:relative;height:100%;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:30px 26px 28px;box-shadow:var(--shadow-1);
  transition:transform var(--t),box-shadow var(--t),border-color var(--t);
}
.step-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:#DCD6CE}
.step-num{
  display:block;font-size:44px;line-height:1;font-weight:800;letter-spacing:-.03em;
  color:var(--surface-alt);font-variant-numeric:tabular-nums;margin-bottom:14px;
  -webkit-text-stroke:1px #E4DED6;
}
.step-card h3{font-size:20px;line-height:1.4;font-weight:600;margin-bottom:10px}
.step-card p{margin:0;font-size:14.8px;color:var(--text);line-height:1.85}
.step-tip{
  display:inline-block;margin-top:16px;padding:5px 11px;border-radius:999px;
  background:rgba(224,118,60,.1);color:var(--accent);font-size:12px;font-weight:600;line-height:1.4;
}

/* ---------- split ---------- */
.split{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}
.split-media{position:relative;border-radius:var(--radius-block);overflow:hidden;box-shadow:var(--shadow-1)}
.split-media img{width:100%;aspect-ratio:4/3;object-fit:cover}
.split-body h2{font-size:clamp(23px,2.7vw,32px);line-height:1.28;font-weight:700}
.split-body > p{margin:16px 0 22px;color:var(--muted);font-size:15.5px}
.check-list{display:flex;flex-direction:column;gap:16px;margin-bottom:26px}
.check-list li{display:flex;gap:12px;align-items:flex-start;font-size:15px;color:var(--text)}
.check-list .ck{
  flex:none;margin-top:3px;width:20px;height:20px;border-radius:50%;
  background:rgba(224,118,60,.12);display:flex;align-items:center;justify-content:center;
}
.check-list strong{color:var(--ink);font-weight:600}

/* ---------- tips ---------- */
.tip-card{
  height:100%;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:24px 22px;box-shadow:var(--shadow-1);
  transition:transform var(--t),box-shadow var(--t);
  display:flex;gap:14px;align-items:flex-start;
}
.tip-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2)}
.tip-icon{
  flex:none;width:38px;height:38px;border-radius:11px;
  background:var(--surface-alt);display:flex;align-items:center;justify-content:center;
}
.tip-card h3{font-size:17px;font-weight:600;line-height:1.5;margin-bottom:6px}
.tip-card p{margin:0;font-size:14.4px;color:var(--muted);line-height:1.8}

/* ---------- faq ---------- */
.faq-list{max-width:820px;margin:0 auto;border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item summary{
  display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:22px 2px;cursor:pointer;list-style:none;
  font-size:17px;font-weight:600;color:var(--ink);line-height:1.55;
  transition:color var(--t);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{color:var(--accent)}
.faq-icon{position:relative;flex:none;width:18px;height:18px}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;background:var(--accent);border-radius:2px;
  transition:transform 220ms cubic-bezier(.22,.61,.36,1),opacity var(--t);
}
.faq-icon::before{left:0;top:8px;width:18px;height:2px}
.faq-icon::after{left:8px;top:0;width:2px;height:18px}
.faq-item[open] .faq-icon::after{transform:rotate(90deg)}
.faq-answer{padding:0 46px 24px 2px;font-size:15px;color:var(--muted);line-height:1.85}
.faq-answer a{color:var(--accent);border-bottom:1px solid rgba(224,118,60,.35)}

/* ---------- cta ---------- */
.cta-band{
  position:relative;overflow:hidden;border-radius:var(--radius-block);
  background:var(--ink);color:#fff;text-align:center;
  padding:64px 36px;
}
.cta-band-bg{
  position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-2.webp');
  background-size:cover;background-position:center;opacity:.22;
}
.cta-band::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(22,19,26,.72),rgba(22,19,26,.94));
}
.cta-band-inner{position:relative;z-index:2;max-width:640px;margin:0 auto}
.cta-band h2{color:#fff;font-size:clamp(24px,3vw,34px);line-height:1.25;font-weight:700}
.cta-band p{margin:16px 0 28px;color:rgba(255,255,255,.76);font-size:15.5px}

/* ---------- footer ---------- */
.site-footer{background:var(--ink);color:#B9B3BE;padding:64px 0 0;margin-top:0}
.foot-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px}
.foot-brand{display:inline-flex;align-items:center;gap:10px;color:#fff;margin-bottom:16px}
.foot-brand span{font-size:18px;font-weight:700}
.foot-desc{margin:0 0 12px;font-size:14px;line-height:1.85;color:#9E97A9;max-width:340px}
.foot-contact{margin:0;font-size:13.5px;color:#8C8695}
.foot-title{margin:0 0 16px;font-size:14px;font-weight:600;color:#fff}
.foot-links{display:flex;flex-direction:column;gap:2px}
.foot-links a{padding:6px 0;font-size:14px;color:#B9B3BE}
.foot-links a:hover{color:var(--accent)}
.foot-bottom{
  margin-top:48px;padding:22px 0 28px;
  border-top:1px solid rgba(255,255,255,.12);
  display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;
  font-size:13px;color:#8C8695;
}

/* ---------- responsive ---------- */
@media (max-width:1023px){
  .nav-links{display:none}
  .search-box{display:none}
  .menu-toggle{display:flex}
  .header-inner{height:60px;gap:14px}
  .brand-name{font-size:17px}
  .section{padding:60px 0}
  .split{grid-template-columns:1fr;gap:32px}
  .split.reverse .split-media{order:-1}
  .foot-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:767px){
  .wrap{padding:0 16px}
  .cat-hero{min-height:auto}
  .cat-hero-inner{padding:40px 0 38px}
  .cat-hero-sub{font-size:15px}
  .hero-actions .btn{flex:1 1 100%}
  .section{padding:52px 0}
  .section-head{margin-bottom:30px}
  .step-num{font-size:38px}
  .faq-answer{padding-right:8px}
  .cta-band{padding:48px 22px}
  .foot-bottom{flex-direction:column;gap:6px}
}
@media (max-width:520px){
  .foot-grid{grid-template-columns:1fr;gap:28px}
  .brand-name{font-size:16px}
  .btn{height:44px;padding:0 20px;font-size:14.5px}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{transition:none!important;animation:none!important;scroll-behavior:auto!important}
  .step-card:hover,.tip-card:hover,.btn:hover{transform:none}
}

/* roulang page: article */
:root{
  --ink:#16131A;
  --ink-2:#241F2B;
  --accent:#E0763C;
  --accent-hover:#C85F2A;
  --muted:#8C8695;
  --line:#E7E3DE;
  --bg:#FBFAF8;
  --surface:#FFFFFF;
  --surface-alt:#F2EFEA;
  --text:#3A3540;
  --radius-card:14px;
  --radius-img:12px;
  --radius-block:20px;
  --shadow-1:0 1px 2px rgba(22,19,26,.04),0 8px 24px -12px rgba(22,19,26,.12);
  --shadow-2:0 2px 4px rgba(22,19,26,.05),0 18px 40px -18px rgba(22,19,26,.22);
  --ease:cubic-bezier(.22,.61,.36,1);
  --wrap:1240px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0;}
a{color:var(--accent);text-decoration:none;transition:color .2s var(--ease);}
a:hover{color:var(--accent-hover);}
button,input{font-family:inherit;font-size:inherit;color:inherit;}
button{background:none;border:0;cursor:pointer;}
h1,h2,h3,h4,h5,h6{font-family:inherit;color:var(--ink);font-weight:700;line-height:1.3;margin:0;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
::selection{background:rgba(224,118,60,.22);}
.wrap{max-width:var(--wrap);margin:0 auto;padding:0 20px;width:100%;}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:4px;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 26px;border-radius:999px;
  font-size:15px;font-weight:600;line-height:1;
  border:1.5px solid transparent;cursor:pointer;
  transition:background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease),transform .2s var(--ease),box-shadow .2s var(--ease);
}
.btn-primary{background:var(--accent);color:#fff;}
.btn-primary:hover{background:var(--accent-hover);color:#fff;transform:translateY(-1px);}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{border-color:var(--ink);color:var(--ink);background:transparent;}
.btn-ghost:hover{border-color:var(--accent);color:var(--accent);transform:translateY(-1px);}
.btn-sm{height:40px;padding:0 20px;font-size:14px;}
.btn-link{display:inline-flex;align-items:center;gap:6px;color:var(--accent);font-weight:600;font-size:15px;}
.btn-link svg{transition:transform .2s var(--ease);}
.btn-link:hover svg{transform:translateX(4px);}

/* ---------- 徽章 ---------- */
.badge{
  display:inline-flex;align-items:center;
  padding:4px 10px;border-radius:999px;
  background:rgba(224,118,60,.10);color:var(--accent);
  font-size:12px;font-weight:600;line-height:1.4;letter-spacing:.02em;
}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:var(--surface);
  border-bottom:1px solid var(--line);
  transition:box-shadow .25s var(--ease);
}
.site-header.is-stuck{box-shadow:var(--shadow-1);}
.header-inner{display:flex;align-items:center;gap:26px;height:68px;}
.brand{display:inline-flex;align-items:center;gap:9px;color:var(--ink);font-size:19px;font-weight:700;letter-spacing:-.01em;flex:0 0 auto;}
.brand:hover{color:var(--ink);}
.brand svg{flex:0 0 auto;}
.nav-links{display:flex;align-items:center;gap:26px;margin-left:8px;}
.nav-link{position:relative;color:var(--ink);font-size:15px;font-weight:500;padding:6px 0;white-space:nowrap;}
.nav-link::after{
  content:"";position:absolute;left:50%;right:50%;bottom:-2px;height:2px;
  background:var(--accent);border-radius:2px;
  transition:left .22s var(--ease),right .22s var(--ease);
}
.nav-link:hover{color:var(--accent);}
.nav-link:hover::after{left:0;right:0;}
.nav-link.active{color:var(--accent);font-weight:600;}
.nav-link.active::after{left:0;right:0;}
.header-actions{display:flex;align-items:center;gap:12px;margin-left:auto;}
.search-box{
  display:flex;align-items:center;gap:8px;
  width:224px;height:40px;padding:0 14px;
  background:var(--surface-alt);
  border:1px solid var(--line);border-radius:999px;
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease);
}
.search-box:focus-within{
  background:var(--surface);
  border-color:var(--accent);
  box-shadow:0 0 0 2px rgba(224,118,60,.18);
}
.search-box svg{flex:0 0 auto;stroke:var(--muted);}
.search-box input{
  border:0;background:transparent;outline:none;
  width:100%;font-size:14px;color:var(--ink);
}
.search-box input::placeholder{color:var(--muted);}
.nav-toggle{display:none;width:40px;height:40px;align-items:center;justify-content:center;border-radius:10px;border:1px solid var(--line);}
.nav-toggle:hover{border-color:var(--accent);}
.nav-toggle svg{stroke:var(--ink);}

/* ---------- 抽屉 ---------- */
.drawer-mask{
  position:fixed;inset:0;z-index:80;background:rgba(22,19,26,.5);
  opacity:0;visibility:hidden;transition:opacity .25s var(--ease),visibility .25s var(--ease);
}
.drawer-mask.open{opacity:1;visibility:visible;}
.drawer{
  position:fixed;top:0;right:0;bottom:0;z-index:90;width:300px;max-width:84vw;
  background:var(--surface);box-shadow:var(--shadow-2);
  transform:translateX(102%);transition:transform .3s var(--ease);
  padding:20px;display:flex;flex-direction:column;gap:18px;
}
.drawer.open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;}
.drawer-brand{font-size:17px;font-weight:700;color:var(--ink);}
.drawer-close{width:36px;height:36px;display:flex;align-items:center;justify-content:center;border-radius:10px;border:1px solid var(--line);}
.drawer-search{display:flex;align-items:center;gap:8px;height:44px;padding:0 14px;background:var(--surface-alt);border:1px solid var(--line);border-radius:999px;}
.drawer-search input{border:0;background:transparent;outline:none;width:100%;font-size:14px;}
.drawer-links{display:flex;flex-direction:column;}
.drawer-links a{color:var(--ink);font-size:16px;font-weight:500;padding:13px 2px;border-bottom:1px solid var(--line);}
.drawer-links a:hover{color:var(--accent);}
.drawer-cta{margin-top:auto;width:100%;}

/* ---------- 文章头 ---------- */
.article-head{padding:34px 0 0;}
.article-col{max-width:860px;margin:0 auto;}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--muted);}
.breadcrumb a{color:var(--muted);}
.breadcrumb a:hover{color:var(--accent);}
.breadcrumb span.sep{color:#CFC9C2;}
.breadcrumb .cur{color:var(--muted);max-width:280px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
.article-title{
  font-size:clamp(29px,4.2vw,46px);
  line-height:1.18;font-weight:800;letter-spacing:-.02em;
  color:var(--ink);margin:16px 0 18px;
}
.article-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:14px;
  padding-bottom:26px;border-bottom:1px solid var(--line);
  font-size:13px;color:var(--muted);
}
.article-meta .dot{width:4px;height:4px;border-radius:50%;background:#CFC9C2;}
.meta-actions{margin-left:auto;display:flex;gap:8px;}
.icon-btn{
  width:36px;height:36px;display:inline-flex;align-items:center;justify-content:center;
  border:1px solid var(--line);border-radius:10px;background:var(--surface);
  transition:border-color .2s var(--ease),background .2s var(--ease),transform .2s var(--ease);
}
.icon-btn svg{stroke:var(--ink);}
.icon-btn:hover{border-color:var(--accent);background:rgba(224,118,60,.06);transform:translateY(-1px);}
.icon-btn:hover svg{stroke:var(--accent);}

/* ---------- 正文 ---------- */
.article-main{padding:0 0 8px;}
.article-hero-img{
  margin:32px 0 0;border-radius:16px;overflow:hidden;
  background:var(--surface-alt);aspect-ratio:16/9;box-shadow:var(--shadow-1);
}
.article-hero-img img{width:100%;height:100%;object-fit:cover;}
.article-hero-cap{font-size:13px;color:var(--muted);margin:10px 0 0;text-align:center;}
.article-body{
  margin:42px 0 0;
  font-size:16.5px;line-height:1.9;color:var(--text);
  word-break:break-word;
}
.article-body p{margin:0 0 1.25em;}
.article-body h2{
  font-size:25px;line-height:1.35;font-weight:700;color:var(--ink);
  margin:2em 0 .8em;padding-left:14px;border-left:3px solid var(--accent);
}
.article-body h3{font-size:19px;line-height:1.45;font-weight:600;color:var(--ink);margin:1.7em 0 .7em;}
.article-body h4{font-size:17px;font-weight:600;color:var(--ink);margin:1.4em 0 .6em;}
.article-body ul,.article-body ol{margin:0 0 1.3em;padding-left:1.5em;}
.article-body ul li{list-style:disc;margin-bottom:.55em;}
.article-body ol li{list-style:decimal;margin-bottom:.55em;}
.article-body blockquote{
  margin:1.7em 0;padding:18px 24px;background:var(--surface-alt);
  border-left:3px solid var(--accent);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:1.7em auto;height:auto;}
.article-body figure{margin:1.7em 0;}
.article-body figcaption{font-size:13px;color:var(--muted);text-align:center;margin-top:10px;}
.article-body a{color:var(--accent);text-decoration:underline;text-underline-offset:3px;}
.article-body strong{color:var(--ink);font-weight:600;}
.article-body table{display:block;width:100%;overflow-x:auto;border-collapse:collapse;font-size:15px;margin:1.6em 0;}
.article-body th,.article-body td{border:1px solid var(--line);padding:10px 14px;text-align:left;white-space:nowrap;}
.article-body th{background:var(--surface-alt);font-weight:600;color:var(--ink);}
.article-body hr{border:0;border-top:1px solid var(--line);margin:2.4em 0;}
.article-empty{
  margin:44px 0 0;padding:56px 24px;text-align:center;
  background:var(--surface-alt);border-radius:var(--radius-block);
}
.article-empty p{font-size:17px;color:var(--ink);font-weight:600;margin-bottom:20px;}
.article-foot{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:16px;
  margin-top:52px;padding-top:26px;border-top:1px solid var(--line);
}
.foot-nav{display:flex;gap:12px;flex-wrap:wrap;}

/* ---------- 相关推荐 ---------- */
.related{padding:78px 0 0;}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:28px;}
.section-head h2{font-size:30px;letter-spacing:-.01em;}
.section-head p{font-size:14px;color:var(--muted);margin-top:6px;}
.rec-card{
  display:flex;flex-direction:column;height:100%;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  overflow:hidden;color:var(--text);
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease);
}
.rec-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);color:var(--text);border-color:#DED8D1;}
.rec-media{display:block;aspect-ratio:16/9;overflow:hidden;background:var(--surface-alt);}
.rec-media img{width:100%;height:100%;object-fit:cover;transition:transform .35s var(--ease);}
.rec-card:hover .rec-media img{transform:scale(1.04);}
.rec-body{display:block;padding:20px 20px 22px;}
.rec-title{display:block;font-size:18px;font-weight:600;color:var(--ink);line-height:1.45;margin:12px 0 8px;}
.rec-desc{display:block;font-size:14px;line-height:1.75;color:var(--muted);}
.related-grid{margin-top:4px;}

/* ---------- CTA ---------- */
.cta-block{padding:86px 0 0;}
.cta-inner{
  position:relative;overflow:hidden;border-radius:var(--radius-block);
  background:var(--ink) url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
  padding:64px 56px;
}
.cta-inner::before{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(22,19,26,.92),rgba(22,19,26,.62));}
.cta-content{position:relative;max-width:600px;}
.cta-content h2{color:#fff;font-size:clamp(24px,3vw,34px);line-height:1.25;letter-spacing:-.01em;}
.cta-content p{color:rgba(255,255,255,.75);font-size:15px;margin:14px 0 26px;line-height:1.8;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink);padding:68px 0 28px;margin-top:96px;}
.foot-grid{display:grid;grid-template-columns:1.7fr 1fr 1fr 1fr;gap:40px;}
.foot-brand{display:inline-flex;align-items:center;gap:9px;color:#fff;font-size:18px;font-weight:700;}
.foot-brand:hover{color:#fff;}
.foot-desc{font-size:14px;line-height:1.85;color:#B9B3BE;margin:16px 0 12px;max-width:330px;}
.foot-contact{font-size:14px;color:#8C8695;}
.foot-title{color:#fff;font-size:14px;font-weight:600;margin:0 0 16px;letter-spacing:.02em;}
.foot-links{display:flex;flex-direction:column;gap:11px;}
.foot-links a{color:#B9B3BE;font-size:14px;}
.foot-links a:hover{color:var(--accent);}
.foot-bottom{
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;
  margin-top:52px;padding-top:22px;border-top:1px solid rgba(255,255,255,.12);
  font-size:13px;color:#8C8695;
}

/* ---------- 响应式 ---------- */
@media (max-width:1023px){
  .nav-links{display:none;}
  .search-box{display:none;}
  .nav-toggle{display:inline-flex;}
  .header-inner{height:62px;gap:16px;}
  .article-head{padding:24px 0 0;}
  .article-body{font-size:16px;margin-top:34px;}
  .related{padding:60px 0 0;}
  .cta-block{padding:66px 0 0;}
  .cta-inner{padding:50px 36px;}
  .site-footer{margin-top:72px;}
  .foot-grid{grid-template-columns:1fr 1fr;gap:34px;}
}
@media (max-width:640px){
  .wrap{padding:0 16px;}
  .brand{font-size:17px;}
  .brand svg{width:24px;height:24px;}
  .article-title{font-size:26px;margin:12px 0 16px;}
  .article-meta{gap:10px;padding-bottom:20px;}
  .meta-actions{margin-left:0;width:100%;}
  .article-hero-img{margin-top:24px;border-radius:14px;}
  .article-body{margin-top:28px;font-size:15.5px;line-height:1.85;}
  .article-body h2{font-size:21px;}
  .article-body h3{font-size:18px;}
  .article-foot{flex-direction:column;align-items:flex-start;}
  .foot-nav{width:100%;}
  .foot-nav .btn{width:100%;}
  .related{padding:48px 0 0;}
  .section-head{flex-direction:column;align-items:flex-start;gap:8px;}
  .section-head h2{font-size:23px;}
  .rec-title{font-size:17px;}
  .cta-block{padding:52px 0 0;}
  .cta-inner{padding:38px 24px;border-radius:16px;}
  .cta-content .btn{width:100%;}
  .site-footer{padding:52px 0 24px;margin-top:56px;}
  .foot-grid{grid-template-columns:1fr;gap:28px;}
  .foot-desc{max-width:none;}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{transition:none!important;animation:none!important;scroll-behavior:auto!important;}
  .rec-card:hover{transform:none;}
}

/* roulang page: category3 */
:root{
  --ink:#16131A;
  --ink-2:#241F2B;
  --accent:#E0763C;
  --accent-hover:#C85F2A;
  --muted:#8C8695;
  --line:#E7E3DE;
  --bg:#FBFAF8;
  --surface:#FFFFFF;
  --surface-alt:#F2EFEA;
  --text:#3A3540;
  --radius-card:14px;
  --radius-img:12px;
  --radius-lg:20px;
  --shadow-1:0 1px 2px rgba(22,19,26,.04), 0 8px 24px -12px rgba(22,19,26,.12);
  --shadow-2:0 2px 4px rgba(22,19,26,.05), 0 18px 38px -16px rgba(22,19,26,.22);
  --ease:cubic-bezier(.22,.61,.36,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-radius:var(--radius-img)}
a{color:var(--accent);text-decoration:none;transition:color 200ms var(--ease)}
a:hover{color:var(--accent-hover)}
h1,h2,h3,h4{margin:0;color:var(--ink);font-family:inherit}
h1{font-size:clamp(32px,5vw,56px);line-height:1.12;font-weight:800;letter-spacing:-.02em}
h2{font-size:clamp(24px,3vw,34px);line-height:1.25;font-weight:700;letter-spacing:-.01em}
h3{font-size:20px;line-height:1.4;font-weight:600}
h4{font-size:17px;line-height:1.5;font-weight:600}
p{margin:0 0 1em}
p:last-child{margin-bottom:0}
ul{margin:0;padding:0;list-style:none}
button{font-family:inherit}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
.wrap{width:100%;max-width:1240px;margin:0 auto;padding-left:20px;padding-right:20px}
.grid-margin-x{margin-left:-11px;margin-right:-11px}
.grid-margin-x>.cell{padding-left:11px;padding-right:11px}
.grid-margin-y{margin-top:-11px;margin-bottom:-11px}
.grid-margin-y>.cell{padding-top:11px;padding-bottom:11px}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:var(--surface);
  border-bottom:1px solid var(--line);
  transition:box-shadow 200ms var(--ease);
}
.site-header.is-stuck{box-shadow:var(--shadow-1)}
.header-inner{
  height:68px;display:flex;align-items:center;gap:28px;
}
.brand{display:flex;align-items:center;gap:9px;flex-shrink:0}
.logo-mark{flex-shrink:0}
.brand-text{font-size:19px;font-weight:700;color:var(--ink);letter-spacing:-.01em;white-space:nowrap}
.nav-links{display:flex;align-items:center;gap:26px;margin-left:8px}
.nav-link{
  position:relative;font-size:15px;color:var(--text);padding:6px 0;white-space:nowrap;font-weight:500;
}
.nav-link::after{
  content:"";position:absolute;left:50%;bottom:0;height:2px;width:0;background:var(--accent);
  transform:translateX(-50%);transition:width 200ms var(--ease);
}
.nav-link:hover{color:var(--ink)}
.nav-link:hover::after{width:100%}
.nav-link.active{color:var(--accent);font-weight:600}
.nav-link.active::after{width:100%}
.header-tools{margin-left:auto;display:flex;align-items:center;gap:14px}
.search-box{
  position:relative;display:flex;align-items:center;
  width:230px;height:40px;border:1px solid var(--line);border-radius:999px;
  background:var(--bg);padding:0 14px;transition:border-color 200ms var(--ease), box-shadow 200ms var(--ease), background 200ms var(--ease);
}
.search-box svg{flex-shrink:0;margin-right:8px}
.search-box input{
  border:0;background:transparent;width:100%;height:100%;
  font-size:14px;color:var(--ink);outline:none;padding:0;
}
.search-box input::placeholder{color:var(--muted)}
.search-box:focus-within{
  background:var(--surface);border-color:var(--accent);
  box-shadow:0 0 0 3px rgba(224,118,60,.18);
}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 26px;border-radius:999px;border:0;cursor:pointer;
  font-size:15px;font-weight:600;letter-spacing:.01em;
  transition:background 200ms var(--ease), color 200ms var(--ease), transform 200ms var(--ease), box-shadow 200ms var(--ease), border-color 200ms var(--ease);
}
.btn-primary{background:var(--accent);color:#fff;box-shadow:0 8px 20px -12px rgba(224,118,60,.9)}
.btn-primary:hover{background:var(--accent-hover);color:#fff;transform:translateY(-1px)}
.btn-primary:active{transform:translateY(0);background:var(--accent-hover)}
.btn-outline{background:transparent;color:var(--ink);border:1.5px solid var(--ink)}
.btn-outline:hover{background:var(--ink);color:#fff;transform:translateY(-1px)}
.btn-ghost{background:transparent;color:#fff;border:1.5px solid rgba(255,255,255,.6)}
.btn-ghost:hover{background:rgba(255,255,255,.14);color:#fff;transform:translateY(-1px)}
.btn-sm{height:40px;padding:0 20px;font-size:14px}
.btn-block{width:100%}
.link-arrow{
  display:inline-flex;align-items:center;gap:6px;font-size:15px;font-weight:600;color:var(--accent);
}
.link-arrow svg{transition:transform 200ms var(--ease)}
.link-arrow:hover svg{transform:translateX(4px)}
.menu-toggle{
  display:none;width:42px;height:42px;border:1px solid var(--line);border-radius:12px;
  background:var(--surface);cursor:pointer;padding:0;position:relative;
}
.menu-toggle span{
  position:absolute;left:11px;width:18px;height:1.6px;background:var(--ink);border-radius:2px;
  transition:transform 200ms var(--ease), opacity 200ms var(--ease);
}
.menu-toggle span:nth-child(1){top:14px}
.menu-toggle span:nth-child(2){top:20px}
.menu-toggle span:nth-child(3){top:26px}

/* ---------- drawer ---------- */
.drawer{
  position:fixed;top:0;right:0;height:100%;width:290px;max-width:82%;
  background:var(--surface);z-index:120;transform:translateX(100%);
  transition:transform 260ms var(--ease);padding:22px 22px 32px;overflow-y:auto;
  box-shadow:-16px 0 40px -24px rgba(22,19,26,.5);
}
.drawer.open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:22px}
.drawer-title{font-size:16px;font-weight:700;color:var(--ink)}
.drawer-close{
  width:36px;height:36px;border-radius:10px;border:1px solid var(--line);background:var(--surface);
  cursor:pointer;color:var(--ink);font-size:18px;line-height:1;padding:0;
}
.drawer-nav{display:flex;flex-direction:column;gap:2px}
.drawer-nav a{
  display:block;padding:13px 12px;border-radius:10px;color:var(--text);font-size:15px;font-weight:500;
}
.drawer-nav a:hover{background:var(--surface-alt);color:var(--ink)}
.drawer-nav a.active{background:rgba(224,118,60,.1);color:var(--accent);font-weight:600}
.drawer-cta{margin-top:22px}
.drawer-mask{
  position:fixed;inset:0;background:rgba(22,19,26,.5);z-index:110;opacity:0;visibility:hidden;
  transition:opacity 200ms var(--ease), visibility 200ms var(--ease);
}
.drawer-mask.open{opacity:1;visibility:visible}

/* ---------- hero ---------- */
.page-hero{
  position:relative;overflow:hidden;background:var(--ink);
  display:flex;align-items:center;min-height:380px;
}
.page-hero-bg{
  position:absolute;inset:0;background-size:cover;background-position:center;
  opacity:.34;filter:saturate(.7);
}
.page-hero::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(90deg, rgba(22,19,26,.94) 0%, rgba(22,19,26,.72) 55%, rgba(22,19,26,.5) 100%);
}
.page-hero-inner{position:relative;z-index:2;padding-top:64px;padding-bottom:64px}
.crumbs{display:flex;align-items:center;gap:10px;font-size:13px;color:rgba(255,255,255,.62);margin-bottom:22px}
.crumbs a{color:rgba(255,255,255,.82)}
.crumbs a:hover{color:var(--accent)}
.crumbs .current{color:rgba(255,255,255,.55)}
.hero-tag{
  display:inline-block;font-size:12px;letter-spacing:.08em;line-height:1;
  padding:7px 12px;border-radius:999px;background:rgba(224,118,60,.16);color:#F0A170;
  margin-bottom:18px;
}
.page-hero h1{color:#fff;max-width:820px}
.hero-sub{margin-top:16px;max-width:660px;color:rgba(255,255,255,.76);font-size:15px;line-height:1.85}
.hero-stats{display:flex;flex-wrap:wrap;gap:36px;margin-top:32px}
.stat{min-width:96px}
.stat-num{font-size:24px;font-weight:800;color:#fff;letter-spacing:-.01em;line-height:1.2}
.stat-label{font-size:13px;color:rgba(255,255,255,.6);margin-top:2px}

/* ---------- section ---------- */
.section{padding:76px 0}
.section-alt{background:var(--surface-alt)}
.section-tight{padding:56px 0}
.sec-head{max-width:720px;margin-bottom:38px}
.sec-head.center{margin-left:auto;margin-right:auto;text-align:center}
.sec-title{margin-bottom:12px}
.sec-desc{color:var(--muted);font-size:15px;line-height:1.85}

/* ---------- quick cards ---------- */
.quick-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  overflow:hidden;height:100%;display:flex;flex-direction:column;
  transition:transform 200ms var(--ease), box-shadow 200ms var(--ease), border-color 200ms var(--ease);
}
.quick-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:#DED8D1}
.quick-thumb{position:relative;aspect-ratio:16/9;overflow:hidden;background:var(--surface-alt)}
.quick-thumb img{width:100%;height:100%;object-fit:cover;border-radius:0;transition:transform 320ms var(--ease)}
.quick-card:hover .quick-thumb img{transform:scale(1.04)}
.quick-body{padding:20px 20px 22px;display:flex;flex-direction:column;flex:1}
.badge{
  display:inline-block;align-self:flex-start;font-size:12px;line-height:1;letter-spacing:.04em;
  padding:5px 10px;border-radius:999px;background:rgba(224,118,60,.1);color:var(--accent);font-weight:600;
}
.quick-body h3{margin:12px 0 8px}
.quick-body p{color:var(--muted);font-size:14.5px;line-height:1.8;margin-bottom:14px}
.quick-meta{margin-top:auto;display:flex;align-items:center;justify-content:space-between;font-size:13px;color:var(--muted)}

/* ---------- faq layout ---------- */
.faq-layout{align-items:flex-start}
.faq-side{position:sticky;top:96px}
.side-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:22px;box-shadow:var(--shadow-1);
}
.side-title{font-size:13px;letter-spacing:.08em;color:var(--muted);margin-bottom:14px;font-weight:600}
.side-list{display:flex;flex-direction:column;gap:4px}
.side-link{
  display:flex;align-items:center;gap:10px;padding:11px 12px;border-radius:10px;
  color:var(--text);font-size:14.5px;font-weight:500;transition:background 200ms var(--ease), color 200ms var(--ease);
}
.side-link:hover{background:var(--surface-alt);color:var(--ink)}
.side-link.active{background:rgba(224,118,60,.1);color:var(--accent)}
.side-link .dot{
  width:6px;height:6px;border-radius:50%;background:var(--line);flex-shrink:0;transition:background 200ms var(--ease);
}
.side-link.active .dot,.side-link:hover .dot{background:var(--accent)}
.side-note{
  margin-top:20px;padding-top:18px;border-top:1px solid var(--line);
  font-size:13px;color:var(--muted);line-height:1.7;
}
.faq-group{margin-bottom:40px}
.faq-group:last-child{margin-bottom:0}
.group-head{display:flex;align-items:baseline;gap:12px;margin-bottom:18px}
.group-head h2{font-size:24px}
.group-count{font-size:13px;color:var(--muted);letter-spacing:.04em}
.faq-list{border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-q-wrap{margin:0}
.faq-q{
  width:100%;display:flex;align-items:flex-start;justify-content:space-between;gap:18px;
  padding:20px 4px;background:transparent;border:0;cursor:pointer;text-align:left;
  font-size:17px;font-weight:600;color:var(--ink);line-height:1.5;
  transition:color 200ms var(--ease);
}
.faq-q:hover{color:var(--accent)}
.faq-icon{
  position:relative;flex-shrink:0;width:20px;height:20px;margin-top:3px;
  transition:transform 220ms var(--ease);
}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;background:var(--accent);border-radius:2px;
}
.faq-icon::before{left:0;top:9px;width:20px;height:1.8px}
.faq-icon::after{left:9px;top:0;width:1.8px;height:20px}
.faq-item.open .faq-icon{transform:rotate(45deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height 220ms var(--ease)}
.faq-a-inner{padding:0 40px 22px 4px;color:var(--muted);font-size:15px;line-height:1.85}
.faq-a-inner p{margin-bottom:10px}
.faq-a-inner p:last-child{margin-bottom:0}
.faq-a-inner strong{color:var(--text);font-weight:600}

/* ---------- compare ---------- */
.compare-list{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  overflow:hidden;box-shadow:var(--shadow-1);
}
.compare-row{
  display:grid;grid-template-columns:1fr 1.35fr;gap:0;
  border-bottom:1px solid var(--line);
  transition:background 200ms var(--ease);
}
.compare-row:last-child{border-bottom:0}
.compare-row:hover{background:var(--bg)}
.compare-row.head{background:var(--surface-alt)}
.compare-cell{padding:18px 22px;font-size:14.5px;line-height:1.8}
.compare-row.head .compare-cell{font-size:13px;letter-spacing:.06em;color:var(--muted);font-weight:600}
.compare-cell.symptom{color:var(--ink);font-weight:600;border-right:1px solid var(--line)}
.compare-cell .cell-tag{
  display:inline-block;font-size:12px;line-height:1;padding:4px 9px;border-radius:999px;
  background:rgba(22,19,26,.06);color:var(--muted);margin-right:8px;vertical-align:middle;
}

/* ---------- form ---------- */
.form-block{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:36px;box-shadow:var(--shadow-1);
}
.form-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px 22px}
.field{display:flex;flex-direction:column}
.field.full{grid-column:1 / -1}
.field label{margin-bottom:8px;font-size:13px;font-weight:600;color:var(--ink)}
.field input,.field select,.field textarea{
  height:48px;border:1px solid var(--line);border-radius:10px;background:var(--bg);
  padding:0 14px;font-size:15px;color:var(--ink);font-family:inherit;outline:none;
  transition:border-color 200ms var(--ease), box-shadow 200ms var(--ease), background 200ms var(--ease);
}
.field textarea{height:130px;padding:12px 14px;line-height:1.7;resize:vertical}
.field select{appearance:none;background-image:linear-gradient(45deg,transparent 50%,var(--muted) 50%),linear-gradient(135deg,var(--muted) 50%,transparent 50%);
  background-position:calc(100% - 20px) 21px, calc(100% - 14px) 21px;background-size:6px 6px,6px 6px;background-repeat:no-repeat}
.field input:focus,.field select:focus,.field textarea:focus{
  background:var(--surface);border-color:var(--accent);box-shadow:0 0 0 3px rgba(224,118,60,.18);
}
.form-note{margin-top:16px;font-size:13px;color:var(--muted);line-height:1.7}
.form-actions{margin-top:24px;display:flex;align-items:center;gap:16px;flex-wrap:wrap}

/* ---------- cta ---------- */
.cta-block{
  position:relative;overflow:hidden;border-radius:var(--radius-lg);
  background:var(--ink);padding:64px 48px;
}
.cta-bg{position:absolute;inset:0;background-size:cover;background-position:center;opacity:.22}
.cta-block::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(100deg, rgba(22,19,26,.95) 0%, rgba(22,19,26,.7) 100%);
}
.cta-inner{position:relative;z-index:2;max-width:620px}
.cta-inner h2{color:#fff}
.cta-inner p{margin-top:14px;color:rgba(255,255,255,.74);font-size:15px}
.cta-actions{margin-top:28px;display:flex;gap:14px;flex-wrap:wrap}

/* ---------- footer ---------- */
.site-footer{background:var(--ink);color:#B9B3BE;padding:64px 0 28px;margin-top:0}
.foot-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:36px}
.foot-brand{display:flex;align-items:center;gap:9px;margin-bottom:16px}
.foot-brand span{color:#fff;font-size:18px;font-weight:700;letter-spacing:-.01em}
.foot-desc{font-size:14px;line-height:1.85;color:#9C95A2;max-width:330px;margin-bottom:12px}
.foot-contact{font-size:14px;color:#9C95A2;margin:0}
.foot-title{color:#fff;font-size:14px;font-weight:600;margin-bottom:16px;letter-spacing:.02em}
.foot-links{display:flex;flex-direction:column;gap:10px}
.foot-links a{color:#B9B3BE;font-size:14px}
.foot-links a:hover{color:var(--accent)}
.foot-bottom{
  margin-top:44px;padding-top:22px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;
  font-size:13px;color:#8C8695;
}

/* ---------- responsive ---------- */
@media (max-width:1023px){
  .nav-links{display:none}
  .search-box{display:none}
  .menu-toggle{display:block}
  .header-inner{gap:16px}
  .section{padding:60px 0}
  .section-tight{padding:46px 0}
  .faq-side{position:static;margin-bottom:32px}
  .foot-grid{grid-template-columns:1fr 1fr;gap:32px}
  .form-grid{grid-template-columns:1fr}
  .compare-row{grid-template-columns:1fr}
  .compare-cell.symptom{border-right:0;border-bottom:1px solid var(--line)}
  .cta-block{padding:48px 28px}
}
@media (max-width:767px){
  .page-hero{min-height:340px}
  .page-hero-inner{padding-top:48px;padding-bottom:48px}
  .hero-stats{gap:22px;margin-top:26px}
  .section{padding:52px 0}
  .sec-head{margin-bottom:28px}
  .faq-q{font-size:16px;padding:17px 2px}
  .faq-a-inner{padding:0 12px 20px 2px}
  .form-block{padding:24px 20px}
  .cta-block{padding:40px 22px}
  .foot-bottom{flex-direction:column;gap:8px}
}
@media (max-width:519px){
  .wrap{padding-left:16px;padding-right:16px}
  .brand-text{font-size:17px}
  .header-inner{height:60px}
  .btn{height:44px;padding:0 20px;font-size:14px}
  .hero-stats{gap:18px}
  .stat{min-width:80px}
  .foot-grid{grid-template-columns:1fr;gap:28px}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{transition:none!important;animation:none!important;scroll-behavior:auto!important}
}

/* roulang page: category2 */
:root{
  --ink:#16131A;
  --ink-2:#241F2B;
  --accent:#E0763C;
  --accent-hover:#C85F2A;
  --muted:#8C8695;
  --line:#E7E3DE;
  --bg:#FBFAF8;
  --surface:#FFFFFF;
  --surface-alt:#F2EFEA;
  --text:#3A3540;
  --ghost-num:#DCD5CC;
  --radius-card:14px;
  --radius-img:12px;
  --radius-block:20px;
  --shadow-1:0 1px 2px rgba(22,19,26,.04), 0 8px 24px -12px rgba(22,19,26,.12);
  --shadow-2:0 2px 6px rgba(22,19,26,.06), 0 18px 40px -18px rgba(22,19,26,.22);
  --ease:cubic-bezier(.22,.61,.36,1);
  --tr:200ms cubic-bezier(.22,.61,.36,1);
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
body.no-scroll{overflow:hidden;}
img{max-width:100%;display:block;border:0;}
a{color:var(--accent);text-decoration:none;transition:color var(--tr);}
a:hover{color:var(--accent-hover);}
h1,h2,h3,h4,h5{margin:0;color:var(--ink);font-weight:700;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
button{font-family:inherit;cursor:pointer;border:0;background:none;}
input,textarea{font-family:inherit;}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;}
.wrap{max-width:1240px;margin:0 auto;padding:0 20px;width:100%;}
.grid-x{margin-left:-12px;margin-right:-12px;}
.grid-x>.cell{padding-left:12px;padding-right:12px;}

/* ============ Header ============ */
.site-header{
  position:sticky;top:0;z-index:60;
  background:var(--surface);
  border-bottom:1px solid var(--line);
  transition:box-shadow var(--tr);
}
.site-header.is-scrolled{box-shadow:var(--shadow-1);}
.header-inner{display:flex;align-items:center;gap:30px;height:68px;}
.brand{display:inline-flex;align-items:center;gap:10px;color:var(--ink);font-weight:700;font-size:19px;letter-spacing:-.01em;}
.brand:hover{color:var(--ink);}
.brand-name{white-space:nowrap;}
.nav-links{display:flex;align-items:center;gap:28px;margin-left:6px;}
.nav-link{position:relative;color:var(--text);font-size:15px;font-weight:500;padding:6px 0;transition:color var(--tr);}
.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;border-radius:2px;
  background:var(--accent);transform:scaleX(0);transform-origin:center;
  transition:transform var(--tr);
}
.nav-link:hover{color:var(--accent);}
.nav-link:hover::after,.nav-link.active::after{transform:scaleX(1);}
.nav-link.active{color:var(--accent);font-weight:600;}
.header-actions{margin-left:auto;display:flex;align-items:center;gap:14px;}
.search-box{position:relative;display:flex;align-items:center;}
.search-box .icon-search{position:absolute;left:14px;width:16px;height:16px;color:var(--muted);pointer-events:none;}
.search-box input{
  width:220px;height:42px;padding:0 16px 0 38px;border-radius:999px;
  border:1px solid var(--line);background:var(--bg);font-size:14px;color:var(--text);
  transition:border-color var(--tr),box-shadow var(--tr),background var(--tr);
}
.search-box input::placeholder{color:var(--muted);}
.search-box input:focus{outline:none;border-color:var(--accent);background:var(--surface);box-shadow:0 0 0 3px rgba(224,118,60,.18);}

/* ============ Buttons ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 26px;border-radius:999px;
  font-size:15px;font-weight:600;line-height:1;white-space:nowrap;
  border:1px solid transparent;transition:background var(--tr),color var(--tr),border-color var(--tr),transform var(--tr),box-shadow var(--tr);
}
.btn-sm{height:40px;padding:0 20px;font-size:14px;}
.btn-primary{background:var(--accent);color:#fff;}
.btn-primary:hover{background:var(--accent-hover);color:#fff;transform:translateY(-1px);}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.6);}
.btn-ghost:hover{background:rgba(255,255,255,.14);color:#fff;transform:translateY(-1px);}
.btn-ghost:active{transform:translateY(0);}
.link-arrow{display:inline-flex;align-items:center;gap:6px;color:var(--accent);font-size:14px;font-weight:600;}
.link-arrow svg{transition:transform var(--tr);}
.link-arrow:hover{color:var(--accent-hover);}
.link-arrow:hover svg{transform:translateX(4px);}

/* ============ Mobile drawer ============ */
.nav-toggle{
  display:none;width:42px;height:42px;border:1px solid var(--line);border-radius:12px;
  background:var(--surface);flex-direction:column;justify-content:center;align-items:center;gap:4px;
  transition:border-color var(--tr);
}
.nav-toggle:hover{border-color:var(--accent);}
.nav-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:var(--ink);transition:background var(--tr);}
.drawer-mask{
  position:fixed;inset:0;background:rgba(22,19,26,.5);z-index:80;
  opacity:0;visibility:hidden;transition:opacity 240ms var(--ease),visibility 240ms var(--ease);
}
.drawer-mask.is-open{opacity:1;visibility:visible;}
.mobile-drawer{
  position:fixed;top:0;right:0;height:100%;width:280px;max-width:82%;
  background:var(--surface);z-index:90;padding:22px 22px 32px;
  display:flex;flex-direction:column;gap:6px;overflow-y:auto;
  transform:translateX(100%);transition:transform 240ms var(--ease);
  box-shadow:-24px 0 48px -28px rgba(22,19,26,.5);
}
.mobile-drawer.is-open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:16px;}
.drawer-brand{font-weight:700;font-size:17px;color:var(--ink);}
.drawer-close{width:36px;height:36px;border-radius:10px;border:1px solid var(--line);display:inline-flex;align-items:center;justify-content:center;color:var(--ink);transition:border-color var(--tr),color var(--tr);}
.drawer-close:hover{border-color:var(--accent);color:var(--accent);}
.drawer-search input{
  width:100%;height:44px;padding:0 16px;border-radius:999px;border:1px solid var(--line);
  background:var(--bg);font-size:14px;color:var(--text);
}
.drawer-search input:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px rgba(224,118,60,.18);}
.drawer-nav{display:flex;flex-direction:column;margin-top:6px;}
.drawer-link{padding:13px 2px;border-bottom:1px solid var(--line);color:var(--text);font-size:15px;font-weight:500;}
.drawer-link:hover{color:var(--accent);}
.drawer-link.active{color:var(--accent);font-weight:600;}
.drawer-cta{margin-top:22px;width:100%;}

/* ============ Breadcrumb ============ */
.breadcrumb-bar{border-bottom:1px solid var(--line);background:var(--surface);}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;padding:12px 0;font-size:13px;color:var(--muted);}
.breadcrumb li{display:flex;align-items:center;gap:8px;}
.breadcrumb li+li::before{content:"/";color:var(--line);}
.breadcrumb a{color:var(--text);}
.breadcrumb a:hover{color:var(--accent);}
.breadcrumb [aria-current="page"]{color:var(--muted);}

/* ============ Hero ============ */
.page-hero{position:relative;background:var(--ink);overflow:hidden;}
.page-hero .hero-bg{position:absolute;inset:0;background-size:cover;background-position:center;opacity:.34;}
.page-hero::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(90deg,rgba(22,19,26,.94) 0%,rgba(22,19,26,.76) 52%,rgba(22,19,26,.5) 100%);
}
.hero-inner{position:relative;z-index:2;padding-top:64px;padding-bottom:64px;}
.eyebrow{
  display:inline-block;font-size:12px;letter-spacing:.14em;color:var(--accent);
  background:rgba(224,118,60,.14);border:1px solid rgba(224,118,60,.34);
  border-radius:999px;padding:6px 14px;line-height:1;margin-bottom:20px;
}
.page-hero h1{
  color:#fff;font-size:clamp(32px,5vw,56px);line-height:1.12;font-weight:800;letter-spacing:-.02em;
  max-width:16em;
}
.hero-sub{margin-top:16px;font-size:clamp(17px,2vw,20px);color:rgba(255,255,255,.9);font-weight:500;}
.hero-text{margin-top:12px;font-size:15px;color:rgba(255,255,255,.68);max-width:640px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:32px;}
.hero-stats{display:flex;flex-wrap:wrap;gap:40px;margin-top:48px;padding-top:28px;border-top:1px solid rgba(255,255,255,.14);}
.hero-stat-num{display:block;font-size:26px;font-weight:800;color:#fff;line-height:1.2;font-variant-numeric:tabular-nums;}
.hero-stat-label{display:block;margin-top:4px;font-size:13px;color:rgba(255,255,255,.6);}

/* ============ Sections ============ */
.section{padding:88px 0;}
.section-alt{background:var(--surface-alt);}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:36px;}
.section-head h2{font-size:clamp(26px,3vw,34px);line-height:1.25;letter-spacing:-.01em;}
.section-desc{margin-top:10px;color:var(--muted);font-size:15px;max-width:620px;}
.result-count{font-size:13px;color:var(--muted);letter-spacing:.04em;white-space:nowrap;padding-bottom:6px;}

/* ============ Chips ============ */
.chips{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:34px;}
.chip{
  padding:9px 18px;border-radius:999px;border:1px solid var(--line);background:var(--surface);
  font-size:13px;color:var(--text);line-height:1;transition:all var(--tr);
}
.chip:hover{border-color:var(--accent);color:var(--accent);}
.chip.is-active{background:var(--accent);border-color:var(--accent);color:#fff;font-weight:600;}

/* ============ Poster wall ============ */
.grid-poster{row-gap:24px;}
.poster-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 var(--tr),box-shadow var(--tr),border-color var(--tr);
}
.poster-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:#DCD5CC;}
.poster-thumb{position:relative;display:block;aspect-ratio:2/3;background:var(--surface-alt);overflow:hidden;}
.poster-thumb img{width:100%;height:100%;object-fit:cover;transition:transform 420ms var(--ease);}
.poster-card:hover .poster-thumb img{transform:scale(1.04);}
.poster-badge{
  position:absolute;left:10px;top:10px;z-index:2;
  font-size:12px;line-height:1;padding:5px 10px;border-radius:999px;
  background:rgba(224,118,60,.94);color:#fff;font-weight:600;letter-spacing:.02em;
}
.poster-badge.is-done{background:rgba(22,19,26,.78);}
.poster-body{padding:14px 16px 18px;display:flex;flex-direction:column;gap:6px;flex:1;}
.poster-title{
  font-size:16px;font-weight:600;line-height:1.45;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.poster-title a{color:var(--ink);}
.poster-title a:hover{color:var(--accent);}
.poster-meta{font-size:13px;color:var(--muted);margin-top:auto;}

/* ============ Pager ============ */
.pager{display:flex;align-items:center;justify-content:center;gap:10px;margin-top:46px;flex-wrap:wrap;}
.pager a,.pager span{
  display:inline-flex;align-items:center;justify-content:center;min-width:40px;height:40px;padding:0 14px;
  border-radius:10px;border:1px solid var(--line);background:var(--surface);
  color:var(--text);font-size:14px;transition:all var(--tr);
}
.pager a:hover{border-color:var(--accent);color:var(--accent);}
.pager .is-current{background:var(--accent);border-color:var(--accent);color:#fff;font-weight:600;}

/* ============ Playlist cards ============ */
.playlist-card{
  display:flex;gap:16px;height:100%;padding:14px;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  box-shadow:var(--shadow-1);transition:transform var(--tr),box-shadow var(--tr);
}
.playlist-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);}
.playlist-thumb{flex:0 0 108px;width:108px;aspect-ratio:3/4;border-radius:var(--radius-img);overflow:hidden;background:var(--surface-alt);}
.playlist-thumb img{width:100%;height:100%;object-fit:cover;transition:transform 420ms var(--ease);}
.playlist-card:hover .playlist-thumb img{transform:scale(1.04);}
.playlist-body{display:flex;flex-direction:column;gap:8px;flex:1;min-width:0;}
.playlist-body h3{font-size:17px;font-weight:600;line-height:1.4;}
.playlist-body p{font-size:13px;color:var(--muted);line-height:1.75;}
.score{display:flex;align-items:center;gap:10px;margin-top:auto;padding-top:10px;}
.score-bar{flex:1;height:6px;border-radius:999px;background:var(--surface-alt);overflow:hidden;}
.score-bar i{display:block;height:100%;border-radius:999px;background:var(--accent);}
.score-num{font-size:13px;color:var(--muted);font-variant-numeric:tabular-nums;}
.tag{
  display:inline-flex;align-items:center;font-size:12px;line-height:1;letter-spacing:.06em;
  padding:5px 10px;border-radius:999px;background:rgba(224,118,60,.1);color:var(--accent);
}

/* ============ Duration list ============ */
.duration-list{border-top:1px solid var(--line);}
.duration-item{
  display:flex;align-items:center;gap:26px;padding:26px 8px;border-bottom:1px solid var(--line);
  transition:background var(--tr),padding var(--tr);
}
.duration-item:hover{background:var(--surface);padding-left:20px;}
.duration-num{font-size:28px;font-weight:800;color:var(--ghost-num);letter-spacing:-.02em;min-width:56px;font-variant-numeric:tabular-nums;}
.duration-main{flex:1;min-width:0;}
.duration-main h3{font-size:19px;font-weight:600;line-height:1.4;}
.duration-main p{font-size:14px;color:var(--muted);margin-top:4px;}

/* ============ Quotes ============ */
.quote-card{
  display:flex;flex-direction:column;gap:14px;height:100%;padding:28px;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  box-shadow:var(--shadow-1);transition:transform var(--tr),box-shadow var(--tr);
}
.quote-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);}
.quote-mark{font-size:30px;font-weight:800;line-height:1;color:var(--accent);}
.quote-text{font-size:15px;line-height:1.85;color:var(--text);}
.quote-from{font-size:13px;color:var(--muted);margin-top:auto;padding-top:6px;}

/* ============ FAQ ============ */
.faq-list{max-width:880px;}
.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:flex-start;justify-content:space-between;gap:20px;
  padding:22px 0;text-align:left;font-size:17px;font-weight:600;color:var(--ink);line-height:1.5;
  transition:color var(--tr);
}
.faq-q:hover{color:var(--accent);}
.faq-icon{
  flex:0 0 26px;width:26px;height:26px;border-radius:50%;border:1px solid var(--line);
  display:inline-flex;align-items:center;justify-content:center;color:var(--muted);
  transition:transform 220ms var(--ease),border-color var(--tr),color var(--tr);
}
.faq-item.is-open .faq-icon{transform:rotate(45deg);border-color:var(--accent);color:var(--accent);}
.faq-a{max-height:0;overflow:hidden;transition:max-height 220ms var(--ease);}
.faq-a p{padding:0 40px 22px 0;font-size:15px;line-height:1.85;color:var(--muted);}

/* ============ CTA ============ */
.cta-block{
  position:relative;overflow:hidden;background:var(--ink);border-radius:var(--radius-block);
  padding:68px 48px;text-align:center;
}
.cta-block .cta-bg{position:absolute;inset:0;background:url('/assets/images/backpic/back-2.webp') center/cover no-repeat;opacity:.24;}
.cta-block .cta-inner{position:relative;z-index:2;}
.cta-block h2{color:#fff;font-size:clamp(24px,3vw,32px);line-height:1.3;letter-spacing:-.01em;}
.cta-block p{color:rgba(255,255,255,.72);font-size:15px;max-width:540px;margin:14px auto 28px;}

/* ============ Footer ============ */
.site-footer{background:var(--ink);color:#fff;padding:64px 0 28px;}
.foot-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px;}
.foot-brand{display:inline-flex;align-items:center;gap:10px;color:#fff;font-weight:700;font-size:18px;margin-bottom:16px;}
.foot-brand:hover{color:#fff;}
.foot-desc{color:#B9B3BE;font-size:14px;line-height:1.8;max-width:330px;}
.foot-contact{color:#B9B3BE;font-size:14px;margin-top:12px;}
.foot-title{color:#fff;font-size:14px;font-weight:600;margin:0 0 16px;}
.foot-links{display:flex;flex-direction:column;gap:10px;}
.foot-links a{color:#B9B3BE;font-size:14px;}
.foot-links a:hover{color:var(--accent);}
.foot-bottom{
  margin-top:48px;padding-top:20px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;
  color:#8C8695;font-size:13px;
}

/* ============ Responsive ============ */
@media screen and (max-width:1023px){
  .nav-links{display:none;}
  .search-box{display:none;}
  .nav-toggle{display:flex;}
  .header-inner{height:60px;gap:16px;}
  .brand{font-size:18px;}
  .section{padding:66px 0;}
  .hero-inner{padding-top:52px;padding-bottom:52px;}
  .foot-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .duration-item:hover{padding-left:8px;}
}
@media screen and (max-width:639px){
  .wrap{padding:0 16px;}
  .grid-x{margin-left:-8px;margin-right:-8px;}
  .grid-x>.cell{padding-left:8px;padding-right:8px;}
  .grid-poster{row-gap:16px;}
  .section{padding:52px 0;}
  .section-head{flex-direction:column;align-items:flex-start;gap:12px;margin-bottom:26px;}
  .hero-inner{padding-top:40px;padding-bottom:44px;}
  .hero-actions{flex-direction:column;align-items:stretch;}
  .hero-actions .btn{width:100%;}
  .hero-stats{gap:24px;margin-top:34px;padding-top:22px;}
  .hero-stat-num{font-size:22px;}
  .duration-item{flex-wrap:wrap;gap:10px;padding:22px 4px;}
  .duration-main h3{font-size:17px;}
  .playlist-thumb{flex:0 0 92px;width:92px;}
  .cta-block{padding:46px 22px;}
  .poster-body{padding:12px 12px 16px;}
  .poster-title{font-size:15px;}
  .faq-q{font-size:16px;}
  .faq-a p{padding-right:0;}
  .foot-grid{grid-template-columns:1fr;}
  .foot-bottom{flex-direction:column;gap:6px;margin-top:34px;}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{
    animation-duration:.001ms !important;animation-iteration-count:1 !important;
    transition-duration:.001ms !important;scroll-behavior:auto !important;
  }
}