/* roulang page: index */
:root{
  --brand:#0B7066;
  --brand-dark:#0A4F49;
  --brand-deep:#073C37;
  --brand-light:#E3EFEB;
  --accent:#C4572B;
  --bg:#F6F5F1;
  --surface:#ffffff;
  --surface-soft:#EDEBE5;
  --text:#1D2A28;
  --text-deep:#10211E;
  --muted:#5B6B67;
  --border:#E3E6DE;
  --shadow-sm:0 1px 2px rgba(30,40,38,.06);
  --shadow-md:0 12px 32px rgba(20,50,45,.14);
  --shadow-lg:0 20px 44px rgba(20,50,45,.18);
  --radius-md:14px;
  --radius-lg:16px;
  --radius-xl:22px;
  --container:1200px;
  --pad:24px;
  --font:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html,body{margin:0;padding:0}
body{
  font-family:var(--font);
  background:var(--bg);
  color:var(--text);
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font-family:inherit;cursor:pointer;border:none;background:none;padding:0}
input,button{font:inherit}
h1,h2,h3,h4,p,ul,ol{margin:0;padding:0}
ul,ol{list-style:none}
a:focus-visible,button:focus-visible,input:focus-visible{
  outline:2px solid var(--brand);
  outline-offset:3px;
  border-radius:6px;
}
.container{width:min(var(--container),100% - var(--pad)*2);margin-left:auto;margin-right:auto}
.visually-hidden{position:absolute;width:1px;height:1px;clip:rect(0 0 0 0);white-space:nowrap;overflow:hidden}
.section{padding:88px 0}
.section--tint{background:var(--brand-light)}
.section--soft{background:var(--surface-soft)}
.section--dark{background:var(--brand-dark);color:#f4fbf9}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;letter-spacing:.05em;
  color:var(--brand);text-transform:uppercase;
  background:var(--brand-light);
  padding:6px 14px;border-radius:999px;
}
.section-head{
  max-width:820px;
  margin-bottom:44px;
}
.section-head h2{
  font-size:clamp(1.75rem,3vw,2.25rem);
  line-height:1.3;
  letter-spacing:-.02em;
  color:var(--text-deep);
  margin:14px 0 10px;
}
.section-head p{
  color:var(--muted);
  font-size:16px;
}
.section--dark .section-head h2{color:#fff}
.section--dark .section-head p{color:#cfe0dc}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:10px;
  font-weight:600;font-size:15px;line-height:1;
  padding:13px 24px;
  border-radius:999px;
  border:1px solid transparent;
  white-space:nowrap;
  transition:background .2s ease,color .2s ease,box-shadow .2s ease,transform .2s ease,border-color .2s ease;
}
.btn:active{transform:translateY(1px)}
.btn--primary{
  background:var(--brand);
  color:#fff;
  box-shadow:0 4px 0 var(--brand-deep),0 8px 18px rgba(11,112,102,.22);
}
.btn--primary:hover{
  background:var(--brand-dark);
  box-shadow:0 2px 0 var(--brand-deep),0 10px 22px rgba(11,112,102,.26);
  transform:translateY(-1px);
}
.btn--ghost{
  background:rgba(255,255,255,.14);
  color:#fff;
  border-color:rgba(255,255,255,.45);
  backdrop-filter:blur(4px);
}
.btn--ghost:hover{
  background:rgba(255,255,255,.22);
  border-color:rgba(255,255,255,.7);
}
.btn--light{
  background:#fff;
  color:var(--brand-dark);
}
.btn--light:hover{
  background:var(--brand-light);
  color:var(--brand-deep);
}
.btn--outline{
  background:transparent;
  border-color:var(--border);
  color:var(--text);
}
.btn--outline:hover{
  background:var(--brand-light);
  border-color:var(--brand-light);
  color:var(--brand-dark);
}
.btn svg{flex-shrink:0}

.icon-btn{
  display:inline-flex;align-items:center;justify-content:center;
  width:40px;height:40px;
  border-radius:50%;
  color:var(--text);
  background:var(--brand-light);
  transition:background .2s,color .2s,box-shadow .2s;
}
.icon-btn:hover{
  background:var(--brand);
  color:#fff;
  box-shadow:var(--shadow-sm);
}

.site-header{
  position:sticky;
  top:0;
  z-index:100;
  background:rgba(246,245,241,.92);
  border-bottom:1px solid rgba(227,230,222,.9);
  backdrop-filter:blur(12px);
  transition:box-shadow .25s ease,background .25s ease;
}
.site-header.is-scrolled{
  box-shadow:0 6px 22px rgba(20,50,45,.08);
  background:rgba(255,255,255,.96);
}
.header__inner{
  height:72px;
  display:flex;align-items:center;gap:20px;
}
.logo{
  display:inline-flex;align-items:center;gap:10px;
  font-weight:700;font-size:17px;
  letter-spacing:-.01em;
  color:var(--text-deep);
  white-space:nowrap;
}
.logo__mark{
  width:34px;height:34px;
  border-radius:11px;
  background:linear-gradient(135deg,var(--brand),var(--brand-dark));
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 4px 10px rgba(11,112,102,.22);
  flex-shrink:0;
}
.logo__mark svg{width:20px;height:20px;fill:#fff}
.logo__text strong{font-weight:800}
.logo__text span{font-weight:500;color:var(--muted);margin-left:2px}

.site-nav{
  flex:1;
  display:flex;
  margin-left:16px;
}
.site-nav ul{
  display:flex;align-items:center;gap:6px;
}
.nav-link{
  position:relative;
  display:inline-flex;align-items:center;
  height:40px;
  padding:0 15px;
  border-radius:999px;
  font-size:15px;
  font-weight:500;
  color:var(--text);
  transition:background .2s,color .2s;
}
.nav-link:hover{
  color:var(--brand-dark);
  background:rgba(227,239,235,.7);
}
.nav-link.is-active{
  color:var(--brand-dark);
  font-weight:600;
}
.nav-link.is-active::after{
  content:"";
  position:absolute;
  left:50%;
  bottom:0;
  width:5px;height:5px;
  border-radius:50%;
  background:var(--brand);
  transform:translateX(-50%);
}
.header__actions{
  display:flex;align-items:center;gap:10px;
  margin-left:auto;
}
.search{
  position:relative;
  width:220px;
}
.search__icon{
  position:absolute;
  left:14px;top:50%;
  transform:translateY(-50%);
  color:var(--muted);
  display:inline-flex;
}
.search input{
  width:100%;
  height:40px;
  padding:0 14px 0 40px;
  background:var(--surface);
  border:1px solid var(--border);
  border-radius:999px;
  color:var(--text);
  font-size:14px;
  transition:border-color .2s,box-shadow .2s;
}
.search input:focus{
  border-color:var(--brand);
  box-shadow:0 0 0 4px rgba(11,112,102,.1);
}
.search input::placeholder{color:#9aa8a3}
.header__login{
  color:var(--text);
  font-weight:500;
  font-size:14px;
  padding:8px 10px;
  border-radius:8px;
}
.header__login:hover{color:var(--brand-dark);background:var(--brand-light)}
.header__btn{
  padding:11px 20px;
  font-size:14px;
}
.burger{
  display:none;
  width:40px;height:40px;
  border-radius:10px;
  align-items:center;justify-content:center;
}
.burger svg{width:22px;height:22px;stroke:var(--text);fill:none;stroke-width:2;stroke-linecap:round}
.mobile-nav{
  position:fixed;
  top:0;right:0;bottom:0;
  width:min(340px,86vw);
  background:var(--surface);
  box-shadow:var(--shadow-lg);
  transform:translateX(105%);
  transition:transform .3s ease;
  z-index:200;
  overflow-y:auto;
  padding:24px;
  border-radius:20px 0 0 20px;
  display:flex;
  flex-direction:column;
  gap:20px;
}
.mobile-nav.is-open{transform:translateX(0)}
.mobile-nav__head{display:flex;align-items:center;justify-content:space-between}
.mobile-nav__close{
  width:38px;height:38px;border-radius:50%;
  background:var(--brand-light);
  display:flex;align-items:center;justify-content:center;
}
.mobile-nav__link{
  display:block;
  padding:13px 10px;
  border-radius:12px;
  color:var(--text);
  font-weight:500;
  border-bottom:1px solid var(--border);
}
.mobile-nav__link:hover,.mobile-nav__link.is-active{color:var(--brand-dark);background:var(--brand-light)}
.mobile-nav__search{
  display:flex;gap:8px;
}
.mobile-nav__search input{
  flex:1;height:42px;
  border:1px solid var(--border);
  border-radius:999px;
  padding:0 16px;
}
.backdrop{
  position:fixed;inset:0;
  background:rgba(10,33,30,.45);
  opacity:0;
  pointer-events:none;
  transition:opacity .3s;
  z-index:180;
}
.backdrop.is-visible{opacity:1;pointer-events:auto}

.hero{
  position:relative;
  overflow:hidden;
  background:
    linear-gradient(rgba(7,42,38,.82),rgba(10,79,73,.78)),
    url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
  color:#f6fdfb;
}
.hero__inner{
  position:relative;
  z-index:2;
  display:grid;
  grid-template-columns:55fr 45fr;
  gap:56px;
  padding:80px 0 96px;
  align-items:center;
}
.hero__badge{
  display:inline-flex;align-items:center;gap:8px;
  background:rgba(255,255,255,.12);
  border:1px solid rgba(255,255,255,.22);
  padding:7px 14px;
  border-radius:999px;
  font-size:13px;
  font-weight:500;
  color:#eafaf6;
  backdrop-filter:blur(8px);
}
.hero__badge svg{width:15px;height:15px;fill:currentColor}
.hero__title{
  margin-top:24px;
  font-size:clamp(2.2rem,4.2vw,3.6rem);
  line-height:1.16;
  letter-spacing:-.035em;
  color:#fff;
  font-weight:800;
}
.hero__lead{
  margin-top:18px;
  max-width:560px;
  font-size:16.5px;
  line-height:1.85;
  color:#d3e8e3;
}
.hero__actions{
  display:flex;
  flex-wrap:wrap;
  gap:14px;
  margin-top:30px;
  align-items:center;
}
.hero__note{
  display:inline-flex;
  align-items:center;
  gap:6px;
  color:#bcd8d2;
  font-size:14px;
}
.hero__note a{color:#fff;border-bottom:1px solid rgba(255,255,255,.4)}
.hero__note a:hover{border-color:#fff}
.hero__stats{
  display:flex;
  flex-wrap:wrap;
  gap:30px;
  margin-top:38px;
  padding-top:24px;
  border-top:1px solid rgba(255,255,255,.14);
}
.hero__stat strong{
  display:block;
  font-size:22px;
  font-weight:700;
  color:#fff;
}
.hero__stat span{
  font-size:13px;
  color:#b8d4ce;
}
.hero__visual{
  position:relative;
}
.hero__frame{
  background:rgba(255,255,255,.12);
  border:1px solid rgba(255,255,255,.2);
  border-radius:18px;
  padding:10px;
  backdrop-filter:blur(12px);
  box-shadow:0 30px 60px rgba(0,20,17,.32);
  transform:rotate(.2deg);
}
.hero__frame-bar{
  display:flex;gap:7px;
  padding:0 4px 10px;
}
.hero__frame-bar span{
  width:10px;height:10px;
  border-radius:50%;
  background:rgba(255,255,255,.2);
}
.hero__frame-bar span:first-child{background:var(--accent)}
.hero__frame img{
  width:100%;
  aspect-ratio:16/10;
  object-fit:cover;
  border-radius:11px;
  background:#fff;
  opacity:.96;
}
.hero__float-card{
  position:absolute;
  left:-28px;bottom:24px;
  background:#fff;
  color:var(--text);
  border-radius:14px;
  box-shadow:var(--shadow-md);
  padding:12px 16px;
  font-size:13px;
  line-height:1.5;
  display:flex;
  align-items:center;
  gap:10px;
}
.hero__float-card i{
  width:34px;height:34px;
  border-radius:50%;
  background:var(--brand-light);
  display:flex;align-items:center;justify-content:center;
  color:var(--brand);
  font-style:normal;
  font-weight:700;
}
.why__grid{
  display:grid;
  grid-template-columns:5fr 7fr;
  gap:64px;
  align-items:start;
}
.why__intro{
  position:sticky;
  top:110px;
}
.why__intro h2{
  margin-top:18px;
  margin-bottom:14px;
  font-size:clamp(1.8rem,2.8vw,2.4rem);
  line-height:1.32;
  letter-spacing:-.02em;
  color:var(--text-deep);
}
.why__intro p{
  color:var(--muted);
}
.why__list{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:18px;
}
.why__item{
  background:var(--surface);
  border-radius:var(--radius-md);
  padding:24px;
  box-shadow:var(--shadow-sm);
  border:1px solid var(--border);
  display:flex;
  gap:16px;
  transition:box-shadow .25s ease,transform .25s ease,border-color .25s ease;
}
.why__item:hover{
  box-shadow:var(--shadow-md);
  transform:translateY(-2px);
  border-color:#d0ddd6;
}
.why__icon{
  width:44px;height:44px;
  border-radius:13px;
  background:var(--brand-light);
  color:var(--brand-dark);
  display:flex;align-items:center;justify-content:center;
  flex-shrink:0;
}
.why__icon svg{width:22px;height:22px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.why__item h3{
  font-size:16px;
  color:var(--text-deep);
  font-weight:650;
  margin-bottom:8px;
}
.why__item p{
  font-size:14px;
  color:var(--muted);
  line-height:1.7;
}

.section--tint .section-head{margin-bottom:36px}
.carousel{
  position:relative;
}
.carousel__meta{
  display:flex;justify-content:space-between;align-items:center;
  gap:20px;
  margin-bottom:24px;
}
.carousel__label{
  font-size:14px;
  color:var(--muted);
  background:rgba(255,255,255,.7);
  border-radius:999px;
  padding:8px 16px;
  border:1px solid rgba(255,255,255,.8);
}
.carousel__viewport{
  overflow:hidden;
  border-radius:18px;
  background:#fff;
  padding:12px;
  box-shadow:var(--shadow-md);
}
.carousel__track{
  display:flex;
  transition:transform .55s cubic-bezier(.22,.61,.36,1);
}
.carousel__item{
  flex:0 0 100%;
  min-width:0;
}
.carousel__item img{
  width:100%;
  aspect-ratio:16/9;
  object-fit:cover;
  border-radius:12px;
  background:#e9ece8;
}
.carousel__cap{
  text-align:center;
  color:var(--muted);
  font-size:13px;
  padding:12px 10px 2px;
}
.carousel__controls{
  display:flex;
  align-items:center;
  justify-content:center;
  gap:20px;
  margin-top:20px;
}
.carousel__arrows{
  display:flex;
  gap:10px;
}
.carousel__dots{
  display:flex;
  align-items:center;
  gap:8px;
}
.carousel__dot{
  width:8px;height:8px;
  border-radius:50%;
  background:#b9c9c2;
  transition:background .2s,transform .2s;
}
.carousel__dot.is-active{background:var(--brand);transform:scale(1.35)}
.carousel__arrow{
  width:42px;height:42px;
  border-radius:50%;
  background:var(--surface);
  border:1px solid var(--border);
  display:flex;align-items:center;justify-content:center;
  color:var(--text);
  box-shadow:var(--shadow-sm);
  transition:background .2s,color .2s,box-shadow .2s;
}
.carousel__arrow:hover{
  background:var(--brand);
  color:#fff;
  border-color:var(--brand);
  box-shadow:var(--shadow-md);
}

.req__card{
  background:var(--surface);
  border-radius:var(--radius-lg);
  box-shadow:var(--shadow-sm);
  border:1px solid var(--border);
  padding:34px 36px;
}
.req__list{
  display:flex;
  flex-direction:column;
}
.req__row{
  display:grid;
  grid-template-columns:180px 1fr 36px;
  gap:20px;
  align-items:center;
  padding:18px 0;
  border-bottom:1px solid var(--border);
}
.req__row:last-child{border-bottom:none}
.req__row-label{
  display:flex;align-items:center;gap:12px;
  font-size:15px;
  font-weight:600;
  color:var(--text-deep);
}
.req__row-label i{
  width:32px;height:32px;
  border-radius:9px;
  background:var(--brand-light);
  color:var(--brand-dark);
  display:flex;align-items:center;justify-content:center;
  font-style:normal;
  font-weight:700;
  font-size:15px;
}
.req__row-value{
  color:var(--text);
  font-size:15px;
}
.req__row-help{
  color:var(--muted);
  font-size:13px;
}
.req__row-help a{color:var(--brand);border-bottom:1px dashed currentColor}

.reviews__summary{
  display:flex;
  align-items:center;
  gap:24px;
  background:var(--surface);
  padding:18px 24px;
  border-radius:var(--radius-md);
  box-shadow:var(--shadow-sm);
  border:1px solid var(--border);
  width:fit-content;
  margin-bottom:36px;
}
.reviews__score{
  font-size:32px;
  font-weight:800;
  color:var(--brand-dark);
  line-height:1;
}
.reviews__stars{
  display:flex;gap:3px;color:#e8a950;font-size:16px;
}
.review-count{
  font-size:13px;
  color:var(--muted);
}
.reviews__grid{
  column-count:3;
  column-gap:24px;
}
.review-card{
  break-inside:avoid;
  margin-bottom:24px;
  background:var(--surface);
  border-radius:var(--radius-md);
  border:1px solid var(--border);
  box-shadow:var(--shadow-sm);
  padding:22px 24px;
  transition:box-shadow .25s ease,transform .25s ease;
}
.review-card:hover{box-shadow:var(--shadow-md);transform:translateY(-2px)}
.review-card__head{
  display:flex;align-items:center;justify-content:space-between;
  gap:12px;
  margin-bottom:10px;
}
.review-card__user{
  font-weight:600;
  color:var(--text-deep);
  font-size:15px;
  display:flex;align-items:center;gap:8px;
}
.review-card__avatar{
  width:32px;height:32px;
  border-radius:50%;
  background:var(--brand-light);
  color:var(--brand-dark);
  display:flex;align-items:center;justify-content:center;
  font-size:13px;
  font-weight:700;
}
.review-card__stars{color:#e8a950;font-size:14px}
.review-card__text{font-size:14.5px;color:var(--text);line-height:1.8}
.review-card__device{
  margin-top:14px;
  color:var(--muted);
  font-size:12px;
  background:var(--surface-soft);
  display:inline-block;
  border-radius:999px;
  padding:4px 10px;
}

.download-section{
  background:
    linear-gradient(105deg,rgba(7,48,43,.92),rgba(10,79,73,.97)),
    url('/assets/images/backpic/back-3.png') center/cover no-repeat;
  color:#fff;
}
.download-panel__head{
  text-align:center;
  max-width:720px;
  margin:0 auto 40px;
}
.download-panel__head .eyebrow{background:rgba(255,255,255,.12);color:#d8f4ee}
.download-panel__head h2{
  font-size:clamp(1.8rem,2.8vw,2.4rem);
  line-height:1.35;
  margin:14px 0 12px;
  color:#fff;
}
.download-panel__head p{
  color:#cdded9;
  font-size:16px;
}
.platform-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:14px;
}
.platform-btn{
  display:flex;
  flex-direction:column;
  align-items:flex-start;
  gap:8px;
  background:rgba(255,255,255,.12);
  border:1px solid rgba(255,255,255,.18);
  border-radius:18px;
  padding:22px 20px;
  color:#fff;
  text-align:left;
  transition:background .25s,border-color .25s,box-shadow .25s,transform .25s;
}
.platform-btn:hover{
  background:rgba(255,255,255,.22);
  border-color:rgba(255,255,255,.5);
  box-shadow:0 18px 30px rgba(0,20,17,.2);
  transform:translateY(-4px);
}
.platform-btn__icon{
  width:42px;height:42px;
  border-radius:13px;
  background:rgba(255,255,255,.16);
  display:flex;align-items:center;justify-content:center;
}
.platform-btn__icon svg{width:22px;height:22px;fill:none;stroke:currentColor;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}
.platform-btn__name{font-weight:700;font-size:16px}
.platform-btn__desc{font-size:12.5px;line-height:1.5;color:#bcd2cc}
.download-panel__foot{
  display:flex;align-items:center;justify-content:center;flex-wrap:wrap;gap:12px 28px;
  margin-top:30px;
  font-size:13px;
  color:#b3ccc5;
}
.download-panel__foot i{
  display:inline-flex;align-items:center;gap:7px;
}

.news__header{
  display:flex;
  justify-content:space-between;
  align-items:flex-end;
  gap:24px;
  margin-bottom:36px;
}
.news__header h2{
  font-size:clamp(1.7rem,2.6vw,2.2rem);
  color:var(--text-deep);
  line-height:1.3;
  margin:14px 0 8px;
}
.news__header p{color:var(--muted)}
.news__header-more{
  flex-shrink:0;
}
.news__grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:24px;
}
.news-card{
  background:var(--surface);
  border-radius:var(--radius-md);
  border:1px solid var(--border);
  box-shadow:var(--shadow-sm);
  padding:22px 22px 18px;
  display:flex;
  flex-direction:column;
  gap:6px;
  transition:box-shadow .25s,transform .25s,border-color .25s;
}
.news-card:hover{
  box-shadow:var(--shadow-md);
  transform:translateY(-4px);
  border-color:#cfe0d8;
}
.news-card__meta{
  display:flex;align-items:center;gap:8px;
  font-size:12px;
  color:var(--muted);
}
.chip{
  display:inline-flex;
  align-items:center;
  height:24px;
  padding:0 12px;
  background:var(--brand-light);
  color:var(--brand-dark);
  border-radius:999px;
  font-size:12px;
  font-weight:600;
}
.chip--muted{
  background:var(--surface-soft);
  color:var(--muted);
}
.news-card h3{
  font-size:17px;
  line-height:1.55;
  color:var(--text-deep);
  font-weight:650;
  margin:6px 0 2px;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.news-card p{
  font-size:14px;
  color:var(--muted);
  line-height:1.75;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.news-card__foot{
  margin-top:10px;
  display:flex;
  justify-content:space-between;
  align-items:center;
  color:var(--brand);
  font-size:14px;
  font-weight:500;
}
.news__empty{
  grid-column:1/-1;
  display:flex;
  align-items:center;
  justify-content:center;
  text-align:center;
  min-height:160px;
  background:transparent;
  border:1px dashed #c4cfc9;
  border-radius:var(--radius-md);
  color:var(--muted);
  font-size:15px;
}
.news__empty:hover{
  background:#fdfcf9;
}

.faq__wrap{
  max-width:860px;
  margin-left:auto;
  margin-right:auto;
  background:var(--surface);
  border-radius:var(--radius-xl);
  box-shadow:var(--shadow-sm);
  border:1px solid var(--border);
  overflow:hidden;
}
.faq__item{border-bottom:1px solid var(--border)}
.faq__item:last-child{border-bottom:none}
.faq__trigger{
  width:100%;
  display:flex;align-items:center;justify-content:space-between;
  gap:20px;
  text-align:left;
  padding:22px 26px;
  font-size:16px;
  font-weight:600;
  color:var(--text-deep);
  transition:color .2s,background .2s;
}
.faq__trigger:hover{color:var(--brand-dark);background:#fbfdfc}
.faq__icon{
  flex-shrink:0;
  width:30px;height:30px;
  border-radius:50%;
  background:var(--brand-light);
  color:var(--brand-dark);
  position:relative;
  display:flex;align-items:center;justify-content:center;
}
.faq__icon::before,.faq__icon::after{
  content:"";
  position:absolute;
  width:12px;height:2px;
  border-radius:2px;
  background:currentColor;
  transition:transform .25s;
}
.faq__icon::after{transform:rotate(90deg)}
.faq__item.is-open .faq__icon::before{transform:rotate(45deg)}
.faq__item.is-open .faq__icon::after{transform:rotate(0)}
.faq__body{
  max-height:0;
  overflow:hidden;
  transition:max-height .3s ease;
}
.faq__answer{
  padding:0 26px 24px 26px;
  color:var(--muted);
  font-size:15px;
  max-width:720px;
  line-height:1.8;
}
.faq__item.is-open .faq__trigger{color:var(--brand)}

.cta-band{
  background:var(--brand-light);
  border-radius:var(--radius-xl);
  padding:44px 48px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:32px;
  flex-wrap:wrap;
  box-shadow:var(--shadow-sm);
}
.cta-band__title{
  font-size:clamp(1.5rem,2.2vw,1.8rem);
  font-weight:700;
  color:var(--brand-deep);
  line-height:1.4;
  max-width:560px;
}
.cta-band__title span{display:block;margin-top:8px;font-size:15px;font-weight:400;color:var(--muted)}
.cta-band__actions{display:flex;gap:14px;flex-wrap:wrap}

.site-footer{
  background:var(--brand-deep);
  color:#c6d6d1;
  margin-top:88px;
  padding:56px 0 0;
}
.footer__grid{
  display:grid;
  grid-template-columns:2fr 1fr 1fr 1.4fr;
  gap:44px;
  padding-bottom:44px;
}
.footer__brand .logo{
  color:#fff;
  margin-bottom:14px;
}
.footer__brand .logo__text span{color:#b8cdc7}
.footer__desc{
  font-size:14px;
  color:#aec4be;
  max-width:260px;
  line-height:1.85;
}
.footer__head{
  color:#fff;
  font-size:15px;
  font-weight:600;
  margin-bottom:18px;
}
.footer__nav li{margin-bottom:10px}
.footer__nav a{
  font-size:14px;
  color:#aec4be;
  transition:color .2s;
}
.footer__nav a:hover{color:#fff}
.footer__contacts{
  font-size:13px;
  line-height:1.9;
  color:#aec4be;
}
.footer__contacts a{color:#d8e8e3}
.footer__contacts a:hover{color:#fff}
.footer__bottom{
  border-top:1px solid rgba(255,255,255,.1);
  padding:22px 0;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
  font-size:13px;
  color:#8cadA6;
}
.footer__bottom-note{
  display:flex;gap:10px;
}
.footer__bottom a{color:#bcd3cd;border-bottom:1px solid rgba(255,255,255,.15)}
.footer__bottom a:hover{color:#fff;border-color:#fff}

.reveal{
  opacity:0;
  transform:translateY(28px);
  transition:opacity .7s ease,transform .7s ease;
}
.reveal.is-visible{
  opacity:1;
  transform:none;
}
@media (max-width:991px){
  :root{--pad:20px}
  .header__actions .search{width:180px}
  .site-nav{margin-left:6px}
  .nav-link{padding:0 11px;font-size:14px}
  .header__btn{padding:10px 16px}
  .hero__inner{grid-template-columns:1fr;gap:44px;padding:64px 0 72px}
  .hero__visual{order:2}
  .hero__float-card{left:10px}
  .why__grid{grid-template-columns:1fr;gap:44px}
  .why__intro{position:static}
  .reviews__grid{column-count:2}
  .news__grid{grid-template-columns:repeat(2,1fr)}
  .platform-grid{grid-template-columns:repeat(2,1fr)}
  .footer__grid{grid-template-columns:1fr 1fr 1fr;row-gap:34px}
  .footer__brand{grid-column:1/-1}
}
@media (max-width:767px){
  .site-header.is-scrolled .header__inner,.header__inner{height:64px}
  .site-nav{display:none}
  .header__login{display:none}
  .search{display:none}
  .header__actions .icon-btn{display:none}
  .burger{display:inline-flex}
  .mobile-nav{display:flex}
  .section{padding:56px 0}
  .hero__inner{padding:44px 0 56px;gap:36px}
  .hero__title{font-size:2rem}
  .hero__actions .btn{width:100%;justify-content:center}
  .hero__note{margin-left:2px}
  .why__grid{gap:36px}
  .why__list{grid-template-columns:1fr}
  .carousel__item img{aspect-ratio:4/3}
  .carousel__meta{flex-wrap:wrap;justify-content:center;text-align:center}
  .req__card{padding:12px 16px}
  .req__row{grid-template-columns:1fr;gap:8px;padding:16px 2px;position:relative}
  .req__row-help{position:absolute;top:14px;right:0}
  .reviews__grid{column-count:1}
  .reviews__summary{flex-wrap:wrap;width:100%}
  .platform-grid{grid-template-columns:1fr 1fr;gap:12px}
  .platform-btn{flex-direction:row;align-items:center;padding:16px 12px}
  .platform-btn__desc{display:none}
  .platform-btn__name{font-size:15px}
  .news__header{align-items:flex-start;flex-direction:column}
  .news__grid{grid-template-columns:1fr}
  .cta-band{padding:30px 22px;justify-content:center;text-align:left}
  .cta-band__actions{width:100%}
  .cta-band__actions .btn{flex:1;justify-content:center}
  .faq__trigger{padding:18px 16px;font-size:15px}
  .faq__answer{padding:0 16px 20px 16px}
  .site-footer{margin-top:56px}
  .footer__grid{grid-template-columns:1fr 1fr;gap:32px}
  .footer__contacts{grid-column:1/-1}
  .footer__bottom{justify-content:center;text-align:center}
}
@media (max-width:480px){
  :root{--pad:16px}
  .platform-grid{grid-template-columns:1fr}
  .header__btn span{display:none}
  .header__btn svg{display:block;width:18px;height:18px}
  .hero__title{font-size:1.85rem}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
  .reveal{opacity:1;transform:none}
}

/* roulang page: article */
:root {
        --brand: #0B7066;
        --brand-dark: #0A4F49;
        --brand-light: #E3EFEB;
        --bg: #F6F5F1;
        --accent: #C4572B;
        --surface: #ffffff;
        --text: #1F2725;
        --muted: #6D7975;
        --border: #E3E0DA;
        --shadow-sm: 0 1px 2px rgba(30, 40, 38, 0.06);
        --shadow-md: 0 12px 32px rgba(20, 50, 45, 0.12);
        --radius-md: 14px;
        --radius-lg: 16px;
        --radius-pill: 999px;
        --footer-bg: #0A4F49;
    }
    *,
    *:before,
    *:after {
        box-sizing: border-box;
        margin: 0;
        padding: 0;
    }
    html {
        scroll-behavior: smooth;
    }
    body {
        font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
        background-color: var(--bg);
        color: var(--text);
        line-height: 1.75;
        font-size: 15px;
        -webkit-font-smoothing: antialiased;
    }
    img {
        max-width: 100%;
        display: block;
    }
    a {
        color: var(--brand);
        text-decoration: none;
        transition: color 0.2s ease;
    }
    a:hover {
        color: var(--brand-dark);
        text-decoration: underline;
    }
    button {
        border: none;
        background: none;
        cursor: pointer;
        font-family: inherit;
        line-height: 1.5;
    }
    input {
        font-family: inherit;
        border: 1px solid var(--border);
        border-radius: var(--radius-pill);
        padding: 0 16px;
        height: 38px;
        font-size: 14px;
        transition: border-color 0.2s, box-shadow 0.2s;
        background: var(--surface);
        color: var(--text);
        width: 100%;
    }
    input:focus {
        outline: none;
        border-color: var(--brand);
        box-shadow: 0 0 0 2px var(--brand-light);
    }
    .container {
        width: 100%;
        max-width: 1200px;
        margin: 0 auto;
        padding-left: 24px;
        padding-right: 24px;
    }
    .site-header {
        position: sticky;
        top: 0;
        z-index: 100;
        height: 72px;
        background: rgba(246, 245, 241, 0.95);
        border-bottom: 1px solid var(--border);
        transition: box-shadow 0.3s ease;
    }
    .site-header.is-scrolled {
        box-shadow: 0 4px 20px rgba(30, 40, 38, 0.08);
        background: rgba(255, 255, 255, 0.98);
    }
    .header__inner {
        height: 72px;
        display: flex;
        align-items: center;
        gap: 24px;
    }
    .logo {
        display: inline-flex;
        align-items: center;
        gap: 10px;
        flex-shrink: 0;
        color: var(--text);
    }
    .logo:hover {
        color: var(--brand-dark);
        text-decoration: none;
    }
    .logo__mark {
        width: 38px;
        height: 38px;
        border-radius: 12px;
        background: var(--brand-light);
        display: flex;
        align-items: center;
        justify-content: center;
        flex-shrink: 0;
    }
    .logo__mark svg {
        width: 24px;
        height: 24px;
        fill: var(--brand);
    }
    .logo__text {
        line-height: 1.3;
        display: flex;
        flex-direction: column;
    }
    .logo__text strong {
        font-size: 17px;
        font-weight: 700;
        color: var(--text);
        letter-spacing: 0.3px;
    }
    .logo__text span {
        font-size: 12px;
        color: var(--muted);
        letter-spacing: 1.5px;
    }
    .site-nav ul {
        display: flex;
        list-style: none;
        gap: 28px;
    }
    .site-nav .nav-link {
        position: relative;
        color: var(--text);
        font-weight: 500;
        padding: 8px 0;
        white-space: nowrap;
        font-size: 15px;
    }
    .site-nav .nav-link:after {
        content: '';
        position: absolute;
        left: 0;
        bottom: 0;
        width: 100%;
        height: 3px;
        border-radius: 3px;
        background: var(--brand);
        display: none;
    }
    .site-nav .nav-link.is-active {
        color: var(--brand);
        font-weight: 600;
    }
    .site-nav .nav-link.is-active:after {
        display: block;
    }
    .site-nav .nav-link:hover {
        color: var(--brand);
        text-decoration: none;
    }
    .header__actions {
        display: flex;
        align-items: center;
        gap: 16px;
        margin-left: auto;
        flex-shrink: 0;
    }
    .search {
        position: relative;
        display: flex;
        align-items: center;
    }
    .search__icon {
        position: absolute;
        left: 14px;
        display: flex;
        color: var(--muted);
        pointer-events: none;
        z-index: 2;
    }
    .search input {
        padding-left: 38px;
        width: 220px;
        background: rgba(255, 255, 255, 0.7);
        border-color: var(--border);
    }
    .search input:focus {
        background: var(--surface);
    }
    .header__login {
        color: var(--text);
        font-weight: 500;
        white-space: nowrap;
        font-size: 14px;
        padding: 8px 12px;
        transition: color 0.2s;
    }
    .header__login:hover {
        color: var(--brand-dark);
        text-decoration: none;
    }
    .btn {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        gap: 8px;
        border-radius: var(--radius-pill);
        font-weight: 600;
        font-size: 15px;
        padding: 0 24px;
        height: 42px;
        line-height: 1.2;
        transition: all 0.25s ease;
        text-decoration: none;
        cursor: pointer;
    }
    .btn svg {
        width: 16px;
        height: 16px;
    }
    .btn--primary {
        background: var(--brand);
        color: #fff;
        box-shadow: inset 0 -2px 0 rgba(10, 79, 73, 0.55);
    }
    .btn--primary:hover {
        background: var(--brand-dark);
        color: #fff;
        box-shadow: none;
        text-decoration: none;
        transform: translateY(1px);
    }
    .btn--primary:focus {
        outline: 2px solid var(--brand-light);
        outline-offset: 2px;
    }
    .btn--ghost {
        background: transparent;
        border: 1px solid var(--border);
        color: var(--text);
    }
    .btn--ghost:hover {
        background: var(--brand-light);
        color: var(--brand-dark);
        border-color: var(--brand);
        text-decoration: none;
    }
    .header__btn {
        height: 40px;
        padding: 0 20px;
        font-size: 14px;
        white-space: nowrap;
    }
    .burger {
        display: none;
        width: 40px;
        height: 40px;
        border-radius: 10px;
        border: 1px solid var(--border);
        align-items: center;
        justify-content: center;
    }
    .burger svg {
        width: 22px;
        height: 22px;
        fill: none;
        stroke: var(--text);
        stroke-width: 2;
        stroke-linecap: round;
    }
    .site-footer {
        background: var(--footer-bg);
        color: rgba(255, 255, 255, 0.86);
        padding: 64px 0 24px;
    }
    .site-footer .logo__text strong {
        color: #fff;
    }
    .site-footer .logo__text span {
        color: rgba(255, 255, 255, 0.6);
    }
    .site-footer .logo__mark {
        background: rgba(255, 255, 255, 0.12);
    }
    .site-footer .logo__mark svg {
        fill: #7ED5C4;
    }
    .site-footer .logo:hover {
        text-decoration: none;
    }
    .footer__grid {
        display: grid;
        grid-template-columns: 1.6fr 1fr 1fr 1.3fr;
        gap: 60px;
        padding-bottom: 48px;
        border-bottom: 1px solid rgba(255, 255, 255, 0.13);
    }
    .footer__brand .logo {
        margin-bottom: 16px;
    }
    .footer__desc {
        font-size: 14px;
        line-height: 1.75;
        color: rgba(255, 255, 255, 0.7);
    }
    .footer__head {
        font-size: 15px;
        font-weight: 600;
        color: #fff;
        margin: 0 0 16px;
        position: relative;
        padding-bottom: 8px;
    }
    .footer__head:after {
        content: '';
        position: absolute;
        bottom: 0;
        left: 0;
        width: 28px;
        height: 2px;
        background: var(--accent);
        border-radius: 2px;
    }
    .footer__nav {
        list-style: none;
        margin: 0;
        padding: 0;
        display: flex;
        flex-direction: column;
        gap: 10px;
    }
    .footer__nav a {
        color: rgba(255, 255, 255, 0.75);
        font-size: 14px;
        transition: color 0.2s, padding-left 0.2s;
    }
    .footer__nav a:hover {
        color: #fff;
        padding-left: 4px;
        text-decoration: none;
        color: #7ED5C4;
    }
    .footer__contacts p {
        margin-bottom: 10px;
        font-size: 14px;
        color: rgba(255, 255, 255, 0.75);
        line-height: 1.7;
    }
    .footer__cms a {
        color: rgba(255, 255, 255, 0.75);
        font-size: 14px;
    }
    .footer__cms a:hover {
        color: #fff;
    }
    .footer__bottom {
        padding-top: 28px;
        display: flex;
        justify-content: space-between;
        align-items: center;
        font-size: 13px;
        gap: 18px;
        color: rgba(255, 255, 255, 0.7);
        flex-wrap: wrap;
    }
    .footer__bottom a {
        color: #7ED5C4;
    }
    .footer__bottom a:hover {
        color: #fff;
        text-decoration: none;
    }
    .footer__bottom-note span {
        margin-left: 4px;
        color: rgba(255, 255, 255, 0.5);
    }
    .mobile-drawer {
        position: fixed;
        top: 0;
        right: -300px;
        width: 300px;
        height: 100vh;
        background: #fff;
        z-index: 200;
        transition: right 0.3s ease;
        padding: 24px;
        display: flex;
        flex-direction: column;
        gap: 26px;
        box-shadow: -12px 0 40px rgba(20, 50, 45, 0.18);
    }
    .mobile-drawer.open {
        right: 0;
    }
    .mobile-drawer__top {
        display: flex;
        align-items: center;
        justify-content: space-between;
    }
    .mobile-drawer__close {
        width: 36px;
        height: 36px;
        border-radius: 10px;
        border: 1px solid var(--border);
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 20px;
        color: var(--text);
        line-height: 1;
    }
    .mobile-drawer__nav {
        list-style: none;
        display: flex;
        flex-direction: column;
        gap: 4px;
    }
    .mobile-drawer__nav a {
        display: block;
        padding: 12px 14px;
        border-radius: 12px;
        color: var(--text);
        font-weight: 500;
        font-size: 15px;
    }
    .mobile-drawer__nav a:hover {
        background: var(--brand-light);
        color: var(--brand-dark);
        text-decoration: none;
    }
    .mobile-drawer__nav a.is-active {
        color: var(--brand);
        background: var(--brand-light);
        font-weight: 600;
    }
    .drawer-overlay {
        position: fixed;
        inset: 0;
        background: rgba(30, 40, 38, 0.5);
        z-index: 150;
        opacity: 0;
        visibility: hidden;
        transition: opacity 0.3s ease;
    }
    .drawer-overlay.active {
        opacity: 1;
        visibility: visible;
    }
    .mobile-drawer .btn {
        width: 100%;
    }
    .mobile-drawer .header__login {
        display: block;
        text-align: center;
        padding: 10px;
        border: 1px solid var(--border);
        border-radius: var(--radius-pill);
    }
    .article-hero {
        padding-top: 20px;
    }
    .breadcrumb {
        font-size: 13px;
        color: var(--muted);
        margin: 24px 0 10px;
        display: flex;
        align-items: center;
        gap: 8px;
        flex-wrap: wrap;
    }
    .breadcrumb a {
        color: var(--muted);
    }
    .breadcrumb a:hover {
        color: var(--brand-dark);
        text-decoration: none;
    }
    .article-category {
        display: inline-flex;
        background: var(--brand-light);
        color: var(--brand-dark);
        font-size: 12px;
        font-weight: 500;
        padding: 2px 14px;
        border-radius: var(--radius-pill);
        height: 26px;
        align-items: center;
        margin-left: 10px;
    }
    .article-header {
        background: #fff;
        border: 1px solid var(--border);
        border-radius: var(--radius-lg);
        padding: 32px 36px 24px;
        box-shadow: var(--shadow-sm);
        margin-bottom: 28px;
    }
    .article-header h1 {
        font-size: 28px;
        font-weight: 700;
        line-height: 1.45;
        margin: 12px 0;
        letter-spacing: 0.2px;
        color: var(--text);
    }
    .article-meta {
        display: flex;
        align-items: center;
        flex-wrap: wrap;
        gap: 16px;
        font-size: 13px;
        color: var(--muted);
        margin-top: 16px;
        padding-top: 16px;
        border-top: 1px solid var(--border);
    }
    .article-meta svg {
        width: 14px;
        height: 14px;
        display: inline;
    }
    .article-meta-item {
        display: flex;
        align-items: center;
        gap: 6px;
        color: var(--muted);
    }
    .article-meta-item .author-icon svg,
    .article-meta-item .date-icon svg {
        vertical-align: middle;
    }
    .article-meta-author {
        display: flex;
        align-items: center;
        gap: 6px;
    }
    .article-layout {
        display: grid;
        grid-template-columns: 1fr 260px;
        gap: 32px;
        align-items: start;
    }
    .article-body {
        background: #fff;
        border-radius: var(--radius-lg);
        border: 1px solid var(--border);
        padding: 40px 44px 40px 40px;
        box-shadow: var(--shadow-sm);
    }
    .article-body__cover {
        position: relative;
        border-radius: 14px;
        overflow: hidden;
        margin-bottom: 28px;
        background: #f0f0f0;
        aspect-ratio: 16/7;
        border: 1px solid var(--border);
    }
    .article-body__cover img {
        width: 100%;
        height: 100%;
        object-fit: cover;
    }
    .article-content {
        max-width: 720px;
    }
    .article-content p {
        margin-bottom: 1.4em;
        font-size: 16px;
        line-height: 1.85;
        color: #333a3f;
        text-align: justify;
    }
    .article-content h2 {
        font-size: 22px;
        font-weight: 700;
        margin: 40px 0 16px;
        color: var(--text);
        line-height: 1.4;
    }
    .article-content h2:first-of-type {
        margin-top: 0;
    }
    .article-content h3 {
        font-size: 18px;
        font-weight: 600;
        margin: 32px 0 12px;
        color: var(--text);
    }
    .article-content h4 {
        font-size: 16px;
        font-weight: 600;
        margin: 24px 0 10px;
        color: var(--text);
    }
    .article-content blockquote {
        border-left: 4px solid var(--brand);
        background: #f7f7f7;
        padding: 16px 20px;
        border-radius: 0 12px 12px 0;
        margin: 24px 0;
        color: #444d55;
    }
    .article-content blockquote p {
        font-style: normal;
        color: var(--text);
        margin-bottom: 0;
    }
    .article-content ul,
    .article-content ol {
        padding-left: 24px;
        margin: 16px 0 20px;
        font-size: 16px;
        line-height: 1.85;
    }
    .article-content li {
        margin-bottom: 8px;
    }
    .article-content a {
        color: var(--brand);
        text-decoration: none;
        font-weight: 500;
    }
    .article-content a:hover {
        text-decoration: underline;
        color: var(--brand-dark);
    }
    .article-content img {
        border-radius: var(--radius-md);
        margin: 24px 0;
    }
    .article-content hr {
        border: none;
        border-top: 1px solid var(--border);
        margin: 36px 0;
    }
    .article-content code {
        background: #f0f2f0;
        border-radius: 6px;
        padding: 2px 10px;
        font-family: "SF Mono", "Fira Code", "JetBrains Mono", courier, monospace;
        font-size: 0.85em;
    }
    .article-content table {
        width: 100%;
        border-collapse: collapse;
        margin: 24px 0;
        font-size: 15px;
    }
    .article-content th,
    .article-content td {
        border: 1px solid var(--border);
        padding: 12px 16px;
        text-align: left;
    }
    .article-content th {
        background: var(--brand-light);
        color: var(--brand-dark);
        font-weight: 600;
    }
    .article-tags {
        display: flex;
        flex-wrap: wrap;
        gap: 12px;
        margin-top: 40px;
        padding-top: 20px;
        border-top: 1px solid var(--border);
    }
    .tag {
        display: inline-flex;
        align-items: center;
        background: #f0f2f0;
        border-radius: var(--radius-pill);
        padding: 4px 16px;
        font-size: 12px;
        color: var(--muted);
        font-weight: 400;
        min-height: 24px;
    }
    .sidebar {
        position: sticky;
        top: 94px;
        display: flex;
        flex-direction: column;
        gap: 20px;
    }
    .toc {
        background: #fff;
        border: 1px solid var(--border);
        border-radius: var(--radius-md);
        padding: 20px 12px 10px;
        box-shadow: var(--shadow-sm);
    }
    .toc h3 {
        font-size: 15px;
        font-weight: 600;
        margin-bottom: 8px;
        color: var(--text);
        padding: 0 12px;
    }
    .toc ul {
        list-style: none;
        max-height: 320px;
        overflow-y: auto;
        border-left: 1px solid transparent;
    }
    .toc ul li a {
        display: block;
        padding: 7px 10px 7px 14px;
        border-radius: 8px;
        font-size: 13px;
        color: var(--muted);
        line-height: 1.5;
        position: relative;
        transition: color 0.2s, background 0.2s;
    }
    .toc ul li a.toc-active,
    .toc ul li a:hover {
        color: var(--brand);
        font-weight: 500;
        text-decoration: none;
        background: var(--brand-light);
    }
    .article-actions {
        margin: 32px 0 0;
    }
    .post-nav {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 18px;
        background: #fff;
        border-radius: var(--radius-lg);
        border: 1px solid var(--border);
        padding: 24px;
        box-shadow: var(--shadow-sm);
    }
    .post-nav-item {
        display: flex;
        align-items: center;
        color: var(--text);
        gap: 14px;
        border: 1px solid transparent;
        padding: 8px;
        border-radius: 10px;
        transition: border-color 0.2s, background 0.2s;
        min-width: 0;
    }
    .post-nav-item + .post-nav-item {
        border-left: 1px solid var(--border);
    }
    .post-nav-item.nav-next {
        text-align: right;
        justify-content: flex-end;
    }
    .post-nav-item.hidden-nav {
        visibility: hidden;
        pointer-events: none;
    }
    .post-nav-item span {
        display: block;
        font-size: 12px;
        color: var(--muted);
        margin-bottom: 4px;
    }
    .post-nav-item strong {
        display: block;
        white-space: nowrap;
        overflow: hidden;
        text-overflow: ellipsis;
        font-size: 14px;
        color: var(--text);
        font-weight: 500;
    }
    .post-nav-item:hover {
        border-color: var(--brand);
        background: var(--brand-light);
        text-decoration: none;
    }
    .post-nav-item:hover strong {
        color: var(--brand-dark);
    }
    .post-nav-item .nav-arrow svg {
        width: 20px;
        height: 20px;
        fill: var(--brand);
        flex-shrink: 0;
    }
    .nav-next {
        flex-direction: row-reverse;
    }
    .empty-nav-placeholder {
        font-size: 13px;
        padding: 8px;
        font-weight: 600;
        text-align: left;
    }
    .empty-nav-placeholder.next {
        border-left: 1px solid var(--border);
        text-align: right;
    }
    .related-section {
        margin-top: 40px;
        background: #fff;
        border: 1px solid var(--border);
        border-radius: var(--radius-lg);
        padding: 28px 32px;
        box-shadow: var(--shadow-sm);
    }
    .related-section h2 {
        font-size: 20px;
        font-weight: 700;
        margin-bottom: 20px;
        color: var(--text);
    }
    .related-list {
        display: grid;
        grid-template-columns: repeat(3, 1fr);
        gap: 22px;
        list-style: none;
    }
    .related-list .related-item {
        padding: 16px;
        border: 1px solid var(--border);
        border-radius: var(--radius-md);
        transition: box-shadow 0.25s, border-color 0.25s;
        align-items: flex-start;
        background: var(--bg);
    }
    .related-list .related-item:hover {
        box-shadow: var(--shadow-sm);
        border-color: var(--brand);
        text-decoration: none;
    }
    .related-item .related-cat {
        display: inline-flex;
        background: var(--brand-light);
        color: var(--brand-dark);
        font-size: 11px;
        font-weight: 500;
        padding: 1px 12px;
        border-radius: var(--radius-pill);
        margin-bottom: 8px;
        min-height: 20px;
        align-items: center;
    }
    .related-item h3 {
        font-size: 15px;
        font-weight: 600;
        color: var(--text);
        line-height: 1.5;
        margin-bottom: 6px;
        display: -webkit-box;
        -webkit-line-clamp: 2;
        -webkit-box-orient: vertical;
        overflow: hidden;
    }
    .related-item p {
        font-size: 13px;
        color: var(--muted);
        margin-bottom: 6px;
        display: -webkit-box;
        -webkit-line-clamp: 2;
        -webkit-box-orient: vertical;
        overflow: hidden;
        line-height: 1.6;
    }
    .content-not-found {
        display: flex;
        flex-direction: column;
        align-items: center;
        justify-content: center;
        gap: 20px;
        text-align: center;
        padding: 140px 30px;
        background: #fff;
        border: 1px solid var(--border);
        border-radius: var(--radius-lg);
        box-shadow: var(--shadow-sm);
    }
    @media (max-width: 1100px) {
        .search input {
            width: 170px;
        }
        .header__inner {
            gap: 16px;
        }
        .footer__grid {
            grid-template-columns: 1fr 1fr 1fr;
            gap: 40px 28px;
        }
    }
    @media (max-width: 991px) {
        .search {
            display: none;
        }
        .site-nav {
            display: none;
        }
        .burger {
            display: flex;
        }
        .mobile-drawer {
            display: flex;
        }
        .header__actions {
            gap: 12px;
        }
        .content-area {
            padding: 24px 0 40px;
        }
        .article-layout {
            grid-template-columns: 1fr;
        }
        .sidebar {
            display: none;
        }
        .related-list {
            gap: 14px;
        }
    }
    @media (max-width: 767px) {
        .container {
            padding-left: 16px;
            padding-right: 16px;
        }
        .header__inner {
            gap: 10px;
        }
        .logo__text span {
            display: none;
        }
        .header__login {
            display: none;
        }
        .header__btn {
            padding: 0 14px;
            height: 36px;
            font-size: 13px;
        }
        .article-header {
            padding: 24px 20px;
        }
        .article-header h1 {
            font-size: 22px;
        }
        .article-body {
            padding: 24px 20px;
        }
        .article-meta {
            gap: 10px;
            flex-direction: column;
            align-items: flex-start;
        }
        .article-body__cover {
            aspect-ratio: 4/3;
        }
        .article-content p {
            font-size: 15px;
        }
        .article-content h2 {
            font-size: 20px;
        }
        .post-nav {
            grid-template-columns: 1fr;
        }
        .post-nav-item + .post-nav-item {
            border-left: none;
            border-top: 1px solid var(--border);
        }
        .nav-next {
            border-left: none;
            border-top: 1px dashed var(--border);
        }
        .related-list {
            grid-template-columns: 1fr;
        }
        .footer__grid {
            grid-template-columns: 1fr;
            gap: 32px;
        }
        .footer__bottom {
            flex-direction: column;
            align-items: flex-start;
            gap: 10px;
        }
    }
    @media (max-width: 520px) {
        .container {
            padding-left: 14px;
            padding-right: 14px;
        }
        .header__inner {
            height: 64px;
        }
        .site-header {
            height: 64px;
        }
    }
    @media (min-width: 992px) {
        .mobile-drawer {
            display: none;
        }
    }
    @media (min-width: 540px) and (max-width: 767px) {
        .breadcrumb .breadcrumb-sep {
            display: none;
        }
    }
    .drawer-actions {
        display: flex;
        flex-direction: column;
        gap: 10px;
        margin-top: 6px;
    }
    .drawer-actions .btn svg {
        width: 16px;
        height: 16px;
    }

/* roulang page: category1 */
:root {
  --brand: #0B7066;
  --brand-dark: #0A4F49;
  --brand-deep: #063A34;
  --brand-light: #E3EFEB;
  --accent: #C4572B;
  --accent-soft: #F9ECE5;
  --bg: #F6F5F1;
  --surface: #FFFFFF;
  --paper: #EDEBE5;
  --text: #20302B;
  --muted: #5F6F69;
  --border: #D9E2DE;
  --shadow-sm: 0 1px 2px rgba(30, 40, 38, .06);
  --shadow-md: 0 12px 32px rgba(20, 50, 45, .12);
  --shadow-lg: 0 24px 60px rgba(4, 45, 41, .18);
  --radius-md: 14px;
  --radius-lg: 20px;
  --header-h: 72px;
  --container: 1200px;
  --font: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  font-family: var(--font);
  font-size: 15px;
  line-height: 1.75;
  background: var(--bg);
  color: var(--text);
}

body.no-scroll {
  overflow: hidden;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  color: inherit;
  text-decoration: none;
  transition: color .2s ease, background .2s ease, border-color .2s ease, box-shadow .2s ease, transform .2s ease;
}

button,
input {
  font-family: inherit;
  font-size: 100%;
  color: inherit;
}

button {
  border: 0;
  background: none;
  cursor: pointer;
}

a:focus-visible,
button:focus-visible,
input:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

.container {
  width: min(100% - 48px, var(--container));
  margin-inline: auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  height: var(--header-h);
  background: rgba(246, 245, 241, .92);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid transparent;
  transition: box-shadow .25s ease, background .25s ease, border-color .25s ease;
}

.site-header.scrolled {
  background: rgba(255, 255, 255, .98);
  border-bottom-color: rgba(217, 226, 222, .9);
  box-shadow: 0 8px 28px rgba(20, 50, 45, .06);
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  height: var(--header-h);
}

.logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}

.logo__mark {
  width: 38px;
  height: 38px;
  display: grid;
  place-items: center;
  color: #fff;
  background: var(--brand-dark);
  border-radius: 50% 50% 44% 44%;
  box-shadow: inset 0 -3px 0 rgba(0, 0, 0, .16);
}

.logo__mark svg {
  width: 22px;
  height: 22px;
  fill: currentColor;
}

.logo__text {
  display: flex;
  flex-direction: column;
  line-height: 1.12;
}

.logo__text strong {
  font-size: 16px;
  font-weight: 800;
  letter-spacing: .2px;
  color: var(--brand-deep);
}

.logo__text > span:last-child {
  font-size: 11px;
  letter-spacing: .2em;
  color: var(--muted);
}

.site-nav {
  display: flex;
  align-items: center;
}

.site-nav ul {
  display: flex;
  align-items: center;
  list-style: none;
  margin: 0;
  padding: 0;
  gap: clamp(18px, 2.4vw, 30px);
}

.nav-link {
  position: relative;
  display: inline-flex;
  align-items: center;
  padding: 24px 2px 28px;
  font-weight: 500;
  color: var(--text);
}

.nav-link:hover {
  color: var(--brand);
}

.nav-link.is-active {
  font-weight: 700;
  color: var(--brand-dark);
}

.nav-link.is-active::after {
  content: "";
  position: absolute;
  left: calc(50% - 3px);
  bottom: 16px;
  width: 6px;
  height: 6px;
  border-radius: 999px;
  background: var(--brand);
}

.header__actions {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-shrink: 0;
}

.search {
  display: flex;
  align-items: center;
  gap: 8px;
  width: 220px;
  height: 38px;
  padding: 0 14px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 999px;
  transition: border-color .2s ease, box-shadow .2s ease;
}

.search:focus-within {
  border-color: var(--brand);
  box-shadow: 0 0 0 2px rgba(11, 112, 102, .14);
}

.search__icon {
  display: inline-flex;
  color: var(--muted);
  flex-shrink: 0;
}

.search input {
  width: 100%;
  min-width: 0;
  border: 0;
  outline: 0;
  background: none;
  font-size: 13px;
  color: var(--text);
}

.search input::placeholder {
  color: #9CAAA5;
}

.header__login {
  font-size: 14px;
  font-weight: 600;
  color: var(--text);
  padding: 8px 2px;
  white-space: nowrap;
}

.header__login:hover {
  color: var(--brand);
}

.header__btn {
  white-space: nowrap;
}

.nav__mobile-actions {
  display: none;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 40px;
  padding: 0 18px;
  border: 1px solid transparent;
  border-radius: 999px;
  font-weight: 700;
  font-size: 14px;
  line-height: 1;
  transition: transform .2s ease, background .2s ease, color .2s ease, border-color .2s ease, box-shadow .2s ease;
}

.btn--primary {
  background: var(--brand);
  color: #fff;
  box-shadow: inset 0 -2px 0 rgba(0, 0, 0, .18), 0 6px 18px rgba(11, 112, 102, .2);
}

.btn--primary:hover {
  background: var(--brand-dark);
  transform: translateY(-2px);
  box-shadow: inset 0 -1px 0 rgba(0, 0, 0, .08), 0 10px 22px rgba(11, 112, 102, .24);
}

.btn--primary:active {
  transform: translateY(1px);
  box-shadow: inset 0 -2px 0 rgba(0, 0, 0, .3), 0 4px 12px rgba(11, 112, 102, .18);
}

.btn--ghost {
  background: rgba(255, 255, 255, .12);
  border-color: rgba(255, 255, 255, .5);
  color: #fff;
}

.btn--ghost:hover {
  background: rgba(255, 255, 255, .2);
  border-color: #fff;
  color: #fff;
}

.btn--light {
  background: #fff;
  color: var(--brand-dark);
  border-color: #fff;
  box-shadow: 0 8px 18px rgba(0, 0, 0, .12);
}

.btn--light:hover {
  background: var(--brand-light);
  border-color: var(--brand-light);
  color: var(--brand-deep);
  transform: translateY(-2px);
}

.btn--small {
  min-height: 34px;
  padding-inline: 14px;
  font-size: 13px;
}

.burger {
  display: none;
  width: 40px;
  height: 40px;
  place-items: center;
  border-radius: 999px;
  color: var(--text);
  transition: background .2s ease;
}

.burger:hover {
  background: var(--brand-light);
}

.burger svg {
  width: 22px;
  height: 22px;
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
}

main {
  display: block;
}

.section-kicker {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-height: 24px;
  padding: 0 12px;
  border-radius: 999px;
  background: var(--brand-light);
  color: var(--brand-dark);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .08em;
}

.section-kicker--accent {
  background: rgba(196, 87, 43, .14);
  color: #F7D7C9;
}

.category-hero {
  position: relative;
  background:
    linear-gradient(115deg, rgba(6, 48, 45, .94) 0%, rgba(10, 79, 73, .88) 52%, rgba(196, 87, 43, .28) 100%),
    url('/assets/images/backpic/back-1.png') center / cover no-repeat;
  color: #fff;
  padding: 60px 0 84px;
}

.breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 26px;
  font-size: 13px;
  color: rgba(255, 255, 255, .76);
}

.breadcrumb a {
  color: rgba(255, 255, 255, .92);
}

.breadcrumb a:hover {
  color: #fff;
  text-decoration: underline;
}

.breadcrumb svg {
  width: 14px;
  height: 14px;
  vertical-align: -2px;
  margin-right: 4px;
}

.hero__eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  border: 1px solid rgba(255, 255, 255, .35);
  background: rgba(255, 255, 255, .1);
  border-radius: 999px;
  font-size: 13px;
  letter-spacing: .1em;
}

.hero__eyebrow svg {
  width: 15px;
  height: 15px;
  stroke: currentColor;
}

.category-hero h1 {
  max-width: 640px;
  margin: 20px 0 12px;
  font-size: clamp(36px, 5vw, 56px);
  line-height: 1.12;
  letter-spacing: .02em;
}

.hero__lead {
  max-width: 720px;
  margin: 0 0 28px;
  font-size: 16px;
  line-height: 1.8;
  color: rgba(255, 255, 255, .9);
}

.hero__actions {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 14px;
}

.hero__facts {
  display: flex;
  flex-wrap: wrap;
  gap: 18px 28px;
  margin-top: 34px;
  padding-top: 20px;
  border-top: 1px solid rgba(255, 255, 255, .22);
  font-size: 13px;
  color: rgba(255, 255, 255, .82);
}

.hero__facts strong {
  display: block;
  font-size: 15px;
  color: #fff;
}

.section {
  padding: 88px 0;
}

.section--white {
  background: #fff;
}

.section--paper {
  background: var(--paper);
}

.section__head {
  max-width: 760px;
  margin-bottom: 42px;
}

.section__head--center {
  margin-inline: auto;
  text-align: center;
}

.section__head h2,
.section__head .h2-like {
  margin: 14px 0 10px;
  font-size: clamp(26px, 3vw, 34px);
  line-height: 1.28;
  letter-spacing: .01em;
  color: var(--text);
}

.section__head p {
  margin: 0;
  font-size: 15px;
  color: var(--muted);
}

#features {
  scroll-margin-top: 90px;
}

.faq-intro {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: end;
  gap: 24px;
}

.faq-intro .section__head {
  margin-bottom: 0;
}

.feature-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

.feature-card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 32px 32px 26px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  transition: transform .25s ease, box-shadow .25s ease, border-color .25s ease;
  overflow: hidden;
}

.feature-card::before {
  content: "";
  position: absolute;
  inset: 0 auto auto 0;
  width: 100%;
  height: 4px;
  background: linear-gradient(90deg, var(--brand), transparent);
  opacity: 0;
  transition: opacity .25s ease;
}

.feature-card:hover {
  border-color: rgba(11, 112, 102, .35);
  box-shadow: var(--shadow-md);
  transform: translateY(-4px);
}

.feature-card:hover::before {
  opacity: 1;
}

.feature-card--accent::before {
  background: linear-gradient(90deg, var(--accent), transparent);
}

.feature-icon {
  display: grid;
  place-items: center;
  width: 46px;
  height: 46px;
  margin-bottom: 12px;
  border-radius: 14px;
  background: var(--brand-light);
  color: var(--brand);
}

.feature-icon svg {
  width: 22px;
  height: 22px;
  stroke: currentColor;
  fill: none;
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.feature-icon--accent {
  background: var(--accent-soft);
  color: var(--accent);
}

.feature-card h3 {
  margin: 0;
  font-size: 18px;
  line-height: 1.4;
}

.feature-card p {
  margin: 0;
  color: var(--muted);
  font-size: 14.5px;
}

.card-link {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  margin-top: 10px;
  font-weight: 700;
  color: var(--brand);
  font-size: 13.5px;
}

.card-link:hover {
  color: var(--accent);
}

.card-link svg {
  width: 16px;
  height: 16px;
  transition: transform .2s ease;
}

.card-link:hover svg {
  transform: translateX(3px);
}

.process-section {
  position: relative;
  padding: 88px 0;
  background:
    linear-gradient(135deg, rgba(5, 48, 44, .96) 0%, rgba(10, 79, 73, .92) 100%),
    url('/assets/images/backpic/back-3.png') center / cover no-repeat;
  color: #fff;
  overflow: hidden;
}

.process-section .section__head h2,
.process-section .section__head p {
  color: #fff;
}

.process-section .section__head .section-kicker {
  background: rgba(255, 255, 255, .12);
  color: #E6F3EF;
}

.process-section__inner {
  display: grid;
  grid-template-columns: minmax(0, 1.03fr) minmax(300px, .97fr);
  gap: 56px;
  align-items: start;
}

.steps-list {
  position: relative;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0 36px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.steps-list li {
  position: relative;
  margin: 0 0 34px;
  padding: 0 0 8px 64px;
  counter-increment: step;
}

.steps-list li::before {
  content: "";
  position: absolute;
  left: 22px;
  top: 38px;
  bottom: -32px;
  width: 2px;
  background: linear-gradient(180deg, var(--accent), rgba(255, 255, 255, .25));
  border-radius: 2px;
}

.steps-list li:last-child::before {
  display: none;
}

.steps-list__num {
  position: absolute;
  left: 0;
  top: 2px;
  display: grid;
  place-items: center;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--accent);
  color: #fff;
  font-size: 17px;
  font-weight: 800;
  box-shadow: 0 0 0 7px rgba(255, 255, 255, .12), 0 6px 16px rgba(0, 0, 0, .18);
}

.steps-list h3 {
  margin: 0 0 4px;
  font-size: 17px;
  line-height: 1.4;
  color: #fff;
}

.steps-list p {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: rgba(255, 255, 255, .8);
}

.steps-aside {
  position: sticky;
  top: 100px;
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.steps-aside__media {
  margin: 0;
  padding: 12px;
  background: rgba(255, 255, 255, .9);
  border-radius: 16px;
  box-shadow: 0 20px 44px rgba(0, 0, 0, .22);
}

.steps-aside__media img {
  width: 100%;
  aspect-ratio: 5 / 3;
  object-fit: cover;
  border-radius: 10px;
  background: #EDEAE2;
}

.steps-aside__media figcaption {
  margin-top: 10px;
  text-align: center;
  font-size: 13px;
  color: var(--muted);
}

.steps-tip {
  padding: 20px 22px;
  border: 1px solid rgba(255, 255, 255, .22);
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, .1);
}

.steps-tip h3 {
  margin: 0 0 6px;
  font-size: 15px;
  color: #fff;
}

.steps-tip p {
  margin: 0;
  font-size: 13.5px;
  color: rgba(255, 255, 255, .84);
}

.spec-panel {
  border: 1px solid var(--border);
  background: var(--surface);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  padding: 10px 0;
  overflow: hidden;
}

.spec-row {
  display: grid;
  grid-template-columns: 140px 1fr auto;
  align-items: center;
  gap: 24px;
  padding: 20px 28px;
}

.spec-row + .spec-row {
  border-top: 1px solid #E8ECEA;
}

.spec-row__name {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 14.5px;
  color: var(--text);
}

.spec-row__name svg {
  width: 20px;
  height: 20px;
  color: var(--brand);
  stroke: currentColor;
  fill: none;
  stroke-width: 1.8;
}

.spec-row__desc {
  font-size: 14px;
  color: var(--muted);
  line-height: 1.7;
}

.spec-row__desc strong {
  color: var(--text);
  font-weight: 600;
}

.spec-tag {
  display: inline-flex;
  align-items: center;
  min-height: 28px;
  padding: 0 10px;
  border-radius: 999px;
  background: var(--brand-light);
  color: var(--brand-dark);
  font-size: 12px;
  font-weight: 700;
  white-space: nowrap;
}

.spec-tag--accent {
  background: var(--accent-soft);
  color: var(--accent);
}

.spec-footnote {
  display: flex;
  gap: 10px 24px;
  align-items: center;
  flex-wrap: wrap;
  margin-top: 24px;
  padding: 16px 20px;
  background: var(--surface);
  border-radius: var(--radius-md);
  border: 1px dashed #C8D5D0;
  font-size: 13.5px;
  color: var(--muted);
}

.spec-footnote svg {
  flex-shrink: 0;
  width: 20px;
  height: 20px;
  color: var(--brand);
  stroke: var(--brand);
  fill: none;
  stroke-width: 2;
}

.faq-section {
  background: var(--paper);
  padding: 88px 0;
}

.faq-wrap {
  margin-top: 36px;
  background: #fff;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
  padding: 0 28px;
}

.faq-item {
  border-top: 1px solid #E7ECEA;
}

.faq-item:first-of-type {
  border-top: 0;
}

.faq-item summary {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 20px 0;
  cursor: pointer;
  list-style: none;
  color: var(--text);
  font-weight: 600;
  font-size: 15px;
  line-height: 1.5;
}

.faq-item summary::-webkit-details-marker {
  display: none;
}

.faq-item summary:hover {
  color: var(--brand);
}

.faq-item[open] summary {
  color: var(--brand-dark);
}

.faq-icon {
  position: relative;
  flex-shrink: 0;
  width: 24px;
  height: 24px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: var(--brand-light);
  color: var(--brand-dark);
  transition: transform .3s ease, background .3s ease, color .3s ease;
}

.faq-icon::before,
.faq-icon::after {
  content: "";
  position: absolute;
  width: 10px;
  height: 2px;
  background: currentColor;
  border-radius: 2px;
  transition: transform .3s ease;
}

.faq-icon::after {
  transform: rotate(90deg);
}

.faq-item[open] .faq-icon {
  background: var(--brand);
  color: #fff;
  transform: rotate(135deg);
}

.faq-answer {
  padding: 0 0 22px;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.85;
  max-width: 920px;
}

.faq-answer p {
  margin: 0;
}

.download-cta-section {
  position: relative;
  padding: 100px 0;
  background:
    linear-gradient(130deg, rgba(5, 46, 41, .98) 0%, rgba(10, 79, 73, .92) 54%, rgba(196, 87, 43, .35) 100%),
    url('/assets/images/backpic/back-2.webp') center / cover no-repeat;
  color: #fff;
}

.download-cta-section__inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(300px, .8fr);
  gap: 40px;
  align-items: center;
}

.download-cta-section h2 {
  margin: 14px 0 12px;
  font-size: clamp(27px, 3.2vw, 38px);
  line-height: 1.3;
}

.download-cta-section p {
  margin: 0 0 22px;
  color: rgba(255, 255, 255, .88);
  max-width: 560px;
}

.cta-platforms {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}

.cta-platform {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 16px;
  background: rgba(255, 255, 255, .12);
  border: 1px solid rgba(255, 255, 255, .24);
  border-radius: 16px;
  color: #fff;
  transition: background .2s ease, border-color .2s ease, transform .2s ease;
}

.cta-platform:hover {
  background: rgba(255, 255, 255, .22);
  border-color: rgba(255, 255, 255, .46);
  transform: translateY(-2px);
}

.cta-platform svg {
  width: 26px;
  height: 26px;
  flex-shrink: 0;
  color: var(--brand-light);
  fill: none;
  stroke: currentColor;
  stroke-width: 1.7;
}

.cta-platform strong {
  display: block;
  font-size: 14.5px;
  color: #fff;
}

.cta-platform small {
  display: block;
  font-size: 12px;
  color: rgba(255, 255, 255, .72);
}

.cta-links {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 18px;
  margin-top: 26px;
}

.cta-links .btn {
  background: #fff;
  color: var(--brand-dark);
}

.cta-links .btn:hover {
  background: var(--brand-light);
  color: var(--brand-deep);
  border-color: var(--brand-light);
  transform: translateY(-2px);
}

.cta-other {
  color: rgba(255, 255, 255, .8);
  font-size: 13.5px;
}

.cta-other a {
  color: #fff;
  text-decoration: underline;
  text-underline-offset: 4px;
}

.cta-other a:hover {
  color: var(--brand-light);
}

.site-footer {
  background: #17332E;
  color: #C9D9D4;
  padding-top: 64px;
}

.footer__grid {
  display: grid;
  grid-template-columns: 1.35fr 1fr 1fr 1fr;
  gap: 44px 40px;
  padding-bottom: 40px;
}

.footer__brand .logo {
  color: #fff;
}

.footer__brand .logo__text strong {
  color: #fff;
}

.footer__brand .logo__text > span:last-child {
  color: rgba(255, 255, 255, .7);
}

.footer__desc {
  margin: 20px 0 0;
  max-width: 420px;
  font-size: 13.5px;
  line-height: 1.8;
  color: #ABC0BA;
}

.footer__head {
  margin: 0 0 14px;
  font-size: 14px;
  font-weight: 700;
  color: #fff;
  letter-spacing: .06em;
}

.footer__nav {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.footer__nav a {
  color: #ADC1BB;
  font-size: 13.5px;
}

.footer__nav a:hover {
  color: #fff;
  text-decoration: underline;
  text-underline-offset: 4px;
}

.footer__contacts p {
  margin: 0 0 6px;
  font-size: 13px;
  color: #ADC1BB;
}

.footer__bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px 24px;
  flex-wrap: wrap;
  padding: 20px 0;
  border-top: 1px solid rgba(255, 255, 255, .12);
  font-size: 13px;
  color: rgba(255, 255, 255, .6);
}

.footer__bottom a {
  color: rgba(255, 255, 255, .8);
}

.footer__bottom a:hover {
  color: #fff;
  text-decoration: underline;
}

.footer__bottom-note {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

@media (max-width: 991px) {
  .header__inner {
    gap: 12px;
  }

  .logo__text > span:last-child {
    display: none;
  }

  .search {
    justify-content: center;
    width: 36px;
    height: 36px;
    padding: 0;
    border-radius: 50%;
  }

  .search input {
    display: none;
  }

  .search__icon {
    margin: 0;
  }

  .header__login {
    display: none;
  }

  .nav__mobile-actions {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-top: 8px;
  }

  .site-nav {
    position: fixed;
    top: var(--header-h);
    left: 0;
    bottom: 0;
    z-index: 1090;
    width: min(340px, 86%);
    display: block;
    padding: 28px 26px;
    background: #fff;
    border-right: 1px solid var(--border);
    transform: translateX(-100%);
    transition: transform .28s ease, box-shadow .28s ease;
    overflow-y: auto;
    box-shadow: none;
  }

  .site-nav ul {
    flex-direction: column;
    align-items: stretch;
    gap: 4px;
  }

  .site-nav ul li a {
    display: flex;
    padding: 12px 10px;
    border-radius: 10px;
  }

  .nav-link.is-active {
    background: var(--brand-light);
  }

  .nav-link.is-active::after {
    display: none;
  }

  .site-header.nav-open .site-nav {
    transform: translateX(0);
    box-shadow: 24px 0 60px rgba(10, 40, 36, .14);
  }

  .site-header.nav-open::after {
    content: "";
    position: fixed;
    inset: var(--header-h) 0 0 0;
    background: rgba(16, 42, 38, .36);
    z-index: 1080;
  }

  .burger {
    display: grid;
  }

  .header__actions {
    gap: 6px;
  }

  .header__btn {
    min-height: 38px;
    padding-inline: 16px;
    font-size: 13px;
  }

  .process-section__inner {
    grid-template-columns: 1fr;
    gap: 44px;
  }

  .steps-list {
    grid-template-columns: 1fr 1fr;
  }

  .steps-aside {
    position: static;
    max-width: 560px;
  }

  .download-cta-section__inner {
    grid-template-columns: 1fr;
  }

  .footer__grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 767px) {
  :root {
    --header-h: 64px;
  }

  body {
    font-size: 15px;
    line-height: 1.75;
  }

  .container {
    width: min(100% - 32px, var(--container));
  }

  .section {
    padding: 56px 0;
  }

  .section__head {
    margin-bottom: 30px;
  }

  .section__head h2,
  .section__head .h2-like {
    font-size: 24px;
  }

  .category-hero {
    padding: 48px 0 64px;
  }

  .category-hero h1 {
    font-size: 36px;
  }

  .hero__lead {
    font-size: 15px;
  }

  .hero__actions {
    align-items: stretch;
    flex-direction: column;
  }

  .hero__actions .btn {
    width: 100%;
  }

  .btn {
    min-height: 42px;
  }

  .feature-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .feature-card {
    padding: 24px;
  }

  .process-section {
    padding: 56px 0;
  }

  .steps-list {
    grid-template-columns: 1fr;
    gap: 0;
  }

  .steps-list li {
    margin-bottom: 26px;
  }

  .steps-list li::before {
    bottom: -24px;
  }

  .steps-aside__media img {
    aspect-ratio: 4 / 3;
  }

  .spec-panel {
    background: transparent;
    border: 0;
    box-shadow: none;
    padding: 0;
  }

  .spec-row {
    grid-template-columns: 1fr;
    gap: 8px;
    background: #fff;
    border-radius: 14px;
    box-shadow: var(--shadow-sm);
    padding: 20px;
    margin-bottom: 12px;
  }

  .spec-row + .spec-row {
    border-top: 0;
  }

  .spec-tag {
    justify-self: start;
  }

  .faq-section {
    padding: 56px 0;
  }

  .faq-wrap {
    margin-top: 24px;
    padding: 0 18px;
  }

  .download-cta-section {
    padding: 64px 0;
  }

  .cta-platforms {
    grid-template-columns: 1fr;
  }

  .footer__grid {
    grid-template-columns: 1fr;
    gap: 30px;
  }

  .footer__bottom {
    align-items: flex-start;
    flex-direction: column;
  }

  .footer__bottom-note {
    flex-wrap: wrap;
  }

  .header__btn span {
    max-width: 90px;
    overflow: hidden;
    white-space: nowrap;
  }
}

@media (max-width: 520px) {
  .header__btn {
    width: 40px;
    height: 36px;
    padding: 0;
    justify-content: center;
  }

  .header__btn span {
    display: none;
  }

  .header__btn svg {
    width: 18px;
    height: 18px;
  }

  .logo__mark {
    width: 34px;
    height: 34px;
  }

  .logo__text strong {
    font-size: 15px;
  }

  .site-header.nav-open::after {
    inset: var(--header-h) 0 0 0;
  }
}

/* roulang page: category2 */
:root {
    --brand: #0B7066;
    --brand-dark: #0A4F49;
    --brand-deep: #063A35;
    --accent: #C4572B;
    --accent-soft: #F6E3D8;
    --bg: #F6F5F1;
    --surface: #FFFFFF;
    --surface-alt: #EDEBE5;
    --brand-light: #E3EFEB;
    --text: #182421;
    --muted: #5D6C68;
    --border: #E1E0DA;
    --border-strong: #CAD2CF;
    --radius-sm: 10px;
    --radius-md: 14px;
    --radius-lg: 20px;
    --radius-xl: 28px;
    --shadow-sm: 0 1px 2px rgba(30, 40, 38, .06);
    --shadow-md: 0 12px 32px rgba(20, 50, 45, .12);
    --shadow-lg: 0 22px 60px rgba(20, 50, 45, .18);
    --container: 1200px;
  }

  *,
  *::before,
  *::after {
    box-sizing: border-box;
  }

  html {
    scroll-behavior: smooth;
  }

  body {
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    font-size: 15px;
    line-height: 1.75;
    color: var(--text);
    background: var(--bg);
    -webkit-font-smoothing: antialiased;
  }

  body.nav-lock {
    overflow: hidden;
  }

  img {
    display: block;
    max-width: 100%;
    background: #E8E7E1;
  }

  a {
    color: var(--brand);
    text-decoration: none;
    transition: color .18s ease, background-color .18s ease, border-color .18s ease, box-shadow .18s ease, transform .18s ease;
  }

  button,
  input {
    font: inherit;
    color: inherit;
  }

  button {
    border: 0;
    cursor: pointer;
  }

  ul,
  ol {
    list-style: none;
    margin: 0;
    padding: 0;
  }

  h1,
  h2,
  h3,
  h4,
  p {
    margin: 0;
  }

  :focus-visible {
    outline: 2px solid var(--brand);
    outline-offset: 3px;
    border-radius: 4px;
  }

  .container {
    max-width: var(--container);
    margin-left: auto;
    margin-right: auto;
    padding-left: 24px;
    padding-right: 24px;
  }

  .section {
    padding: 88px 0;
  }

  .section--alt {
    background: var(--surface-alt);
  }

  .section--light {
    background: var(--brand-light);
  }

  .eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    font-weight: 700;
    letter-spacing: .06em;
    color: var(--brand);
    margin-bottom: 14px;
    text-transform: uppercase;
  }

  .eyebrow::before {
    content: "";
    width: 20px;
    height: 2px;
    background: var(--accent);
    border-radius: 999px;
  }

  .section-head {
    max-width: 760px;
    margin-bottom: 42px;
  }

  .section-head h2 {
    font-size: 30px;
    line-height: 1.32;
    letter-spacing: .01em;
    margin-bottom: 14px;
    color: var(--brand-deep);
  }

  .section-head p {
    color: var(--muted);
    font-size: 15px;
  }

  .badge {
    display: inline-flex;
    align-items: center;
    min-height: 26px;
    padding: 0 11px;
    border-radius: 999px;
    background: var(--brand-light);
    color: var(--brand-dark);
    font-size: 12px;
    font-weight: 600;
    line-height: 1;
    white-space: nowrap;
  }

  .badge--accent {
    background: var(--accent-soft);
    color: var(--accent);
  }

  /* 按钮 */
  .btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    min-height: 44px;
    padding: 0 22px;
    border-radius: 999px;
    font-weight: 700;
    font-size: 14px;
    line-height: 1;
    transition: background-color .2s ease, box-shadow .2s ease, border-color .2s ease, transform .2s ease;
    border: 1px solid transparent;
  }

  .btn--primary {
    background: var(--brand);
    box-shadow: 0 3px 0 0 var(--brand-dark);
    color: #fff;
  }

  .btn--primary:hover {
    background: var(--brand-dark);
    box-shadow: 0 2px 0 0 var(--brand-deep);
    transform: translateY(-1px);
  }

  .btn--primary:active {
    transform: translateY(1px);
    box-shadow: 0 1px 0 0 var(--brand-deep);
  }

  .btn--ghost {
    background: transparent;
    border-color: #CBD6D3;
    color: var(--brand-dark);
  }

  .btn--ghost:hover {
    background: var(--brand-light);
    border-color: rgba(11, 112, 102, .22);
  }

  .btn--light {
    background: #fff;
    color: var(--brand-dark);
    box-shadow: 0 3px 0 0 rgba(0, 0, 0, .14);
  }

  .btn--light:hover {
    background: var(--brand-light);
    transform: translateY(-1px);
  }

  .btn--outline-light {
    background: rgba(255, 255, 255, .08);
    border-color: rgba(255, 255, 255, .4);
    color: #fff;
  }

  .btn--outline-light:hover {
    background: rgba(255, 255, 255, .18);
    border-color: #fff;
  }

  /* 顶部导航 */
  .site-header {
    position: sticky;
    top: 0;
    z-index: 60;
    height: 72px;
    background: rgba(255, 255, 255, .92);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid transparent;
    transition: box-shadow .2s ease, border-color .2s ease;
  }

  .site-header.is-scrolled {
    border-bottom-color: rgba(218, 222, 218, .55);
    box-shadow: 0 8px 26px rgba(17, 46, 41, .08);
  }

  .header__inner {
    display: flex;
    align-items: center;
    height: 72px;
    gap: 18px;
  }

  .logo {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    flex-shrink: 0;
  }

  .logo__mark {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--brand);
    border-radius: 13px;
    color: #fff;
    box-shadow: 0 4px 10px rgba(11, 112, 102, .2);
  }

  .logo__mark svg {
    width: 23px;
    height: 23px;
    fill: currentColor;
  }

  .logo__text {
    display: flex;
    flex-direction: column;
    line-height: 1.2;
  }

  .logo__text strong {
    font-size: 17px;
    letter-spacing: .02em;
    color: var(--brand-deep);
  }

  .logo__text span {
    font-size: 11px;
    color: var(--muted);
    letter-spacing: .14em;
  }

  .site-nav {
    margin-left: 10px;
    margin-right: auto;
  }

  .site-nav ul {
    display: flex;
    align-items: center;
    gap: 8px;
  }

  .nav-link {
    position: relative;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    height: 72px;
    padding: 0 14px;
    font-weight: 600;
    font-size: 15px;
    color: var(--text);
    transition: color .2s;
  }

  .nav-link:hover {
    color: var(--brand);
  }

  .nav-link::after {
    content: "";
    position: absolute;
    left: 50%;
    bottom: 13px;
    width: 5px;
    height: 5px;
    margin-left: -2.5px;
    border-radius: 50%;
    background: var(--brand);
    opacity: 0;
    transform: translateY(4px);
    transition: opacity .2s, transform .2s;
  }

  .nav-link:hover::after {
    opacity: .35;
    transform: translateY(0);
  }

  .nav-link.is-active {
    color: var(--brand);
  }

  .nav-link.is-active::after {
    opacity: 1;
    transform: translateY(0);
  }

  .header__actions {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-shrink: 0;
  }

  .search {
    display: flex;
    align-items: center;
    gap: 8px;
    width: 220px;
    height: 40px;
    padding: 0 14px;
    border: 1px solid var(--border);
    border-radius: 999px;
    background: #F4F4F1;
    transition: border-color .2s, background .2s, box-shadow .2s;
  }

  .search:focus-within {
    border-color: var(--brand);
    box-shadow: 0 0 0 2px rgba(11, 112, 102, .15);
    background: #fff;
  }

  .search__icon {
    display: flex;
    color: var(--muted);
  }

  .search input {
    width: 100%;
    min-width: 0;
    border: 0;
    outline: 0;
    background: transparent;
    font-size: 13px;
    height: 100%;
    color: var(--text);
  }

  .search input::placeholder {
    color: #98A29F;
  }

  .header__login {
    font-size: 14px;
    font-weight: 700;
    color: var(--brand-dark);
    padding: 0 8px;
    transition: color .2s;
  }

  .header__login:hover {
    color: var(--brand);
  }

  .header__btn {
    min-height: 38px;
    padding: 0 16px;
    font-size: 13px;
  }

  .burger {
    display: none;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: 12px;
    background: var(--brand-light);
    color: var(--brand-dark);
  }

  .burger svg {
    width: 21px;
    height: 21px;
    fill: none;
    stroke: currentColor;
    stroke-width: 2;
    stroke-linecap: round;
  }

  /* 面包屑 */
  .breadcrumb {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 7px;
    padding-top: 18px;
    font-size: 13px;
    color: var(--muted);
  }

  .breadcrumb a {
    color: var(--muted);
    transition: color .2s;
  }

  .breadcrumb a:hover {
    color: var(--brand);
  }

  .breadcrumb span {
    color: #B6BDB9;
  }

  .breadcrumb .current {
    color: var(--brand-dark);
    font-weight: 600;
  }

  /* 分类页首屏 */
  .page-banner {
    position: relative;
    background: linear-gradient(90deg, rgba(246, 245, 241, .97) 35%, rgba(227, 239, 235, .86)), url('/assets/images/backpic/back-1.png') no-repeat center top / cover;
    border-bottom: 1px solid var(--border);
  }

  .page-banner__grid {
    display: grid;
    grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr);
    gap: 46px;
    align-items: center;
    padding: 56px 0 64px;
  }

  .page-banner .eyebrow {
    color: var(--brand);
  }

  .page-banner__text h1 {
    font-size: 44px;
    line-height: 1.16;
    letter-spacing: .01em;
    color: var(--brand-deep);
    margin-top: 4px;
    margin-bottom: 18px;
    font-weight: 800;
  }

  .page-banner__text .lead {
    font-size: 16px;
    color: #44524E;
    max-width: 570px;
    margin-bottom: 24px;
  }

  .page-banner__tags {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
  }

  .page-banner__shot {
    position: relative;
    background: #fff;
    border: 1px solid var(--border);
    border-radius: 18px;
    box-shadow: var(--shadow-md);
    overflow: hidden;
    aspect-ratio: 4 / 3;
  }

  .page-banner__shot img {
    width: 100%;
    height: 100%;
    object-fit: cover;
  }

  /* 概览信息区 */
  .category-overview {
    position: relative;
    background: var(--bg);
  }

  .overview-grid {
    display: grid;
    grid-template-columns: minmax(0, 1.04fr) minmax(0, .96fr);
    gap: 48px;
    align-items: stretch;
  }

  .overview-copy {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
  }

  .overview-copy p {
    color: var(--muted);
    margin-bottom: 16px;
    max-width: 560px;
  }

  .overview-list {
    display: grid;
    gap: 12px;
    margin-top: 10px;
    margin-bottom: 24px;
    width: 100%;
    max-width: 520px;
  }

  .overview-list li {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 15px 16px;
    color: #3B4B46;
    box-shadow: var(--shadow-sm);
  }

  .overview-list .icon {
    flex-shrink: 0;
    width: 22px;
    height: 22px;
    margin-top: 3px;
    border-radius: 6px;
    background: var(--brand-light);
    color: var(--brand);
    display: flex;
    align-items: center;
    justify-content: center;
  }

  .overview-list .icon svg {
    width: 13px;
    height: 13px;
    fill: none;
    stroke: currentColor;
    stroke-width: 3;
    stroke-linecap: round;
    stroke-linejoin: round;
  }

  .overview-panel {
    position: relative;
    border-radius: 18px;
    overflow: hidden;
    border: 1px solid var(--border);
    box-shadow: var(--shadow-md);
    min-height: 380px;
    background: #E7E9E4;
  }

  .overview-panel img {
    width: 100%;
    height: 100%;
    min-height: 380px;
    object-fit: cover;
    transition: transform .4s ease;
  }

  .overview-panel:hover img {
    transform: scale(1.02);
  }

  /* 功能卡片区 */
  .feature-themes {
    background: var(--surface-alt);
  }

  .feature-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 26px;
  }

  .feature-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
    display: flex;
    flex-direction: column;
    transition: transform .2s ease, border-color .2s ease, box-shadow .2s ease;
  }

  .feature-card:hover {
    box-shadow: var(--shadow-md);
    border-color: #CBD9D4;
    transform: translateY(-3px);
  }

  .feature-card:active {
    transform: translateY(0);
  }

  .feature-card__media {
    position: relative;
    aspect-ratio: 16 / 8;
    overflow: hidden;
    background: #E7E7E1;
    border-bottom: 1px solid var(--border);
  }

  .feature-card__media img {
    width: 100%;
    height: 100%;
    object-fit: cover;
  }

  .feature-card__tag {
    position: absolute;
    left: 14px;
    top: 14px;
    background: rgba(255, 255, 255, .92);
    color: var(--brand-dark);
    font-size: 12px;
    font-weight: 700;
    padding: 5px 10px;
    border-radius: 999px;
    box-shadow: 0 4px 12px rgba(20, 50, 45, .1);
  }

  .feature-card__body {
    padding: 22px 24px 24px;
    flex: 1;
  }

  .feature-card__body h3 {
    font-size: 19px;
    color: var(--brand-deep);
    margin-bottom: 10px;
    line-height: 1.5;
  }

  .feature-card__body p {
    font-size: 14px;
    color: var(--muted);
    margin-bottom: 14px;
  }

  .feature-card__list li {
    position: relative;
    padding-left: 22px;
    color: #43514D;
    font-size: 14px;
    line-height: 1.7;
  }

  .feature-card__list li + li {
    margin-top: 5px;
  }

  .feature-card__list li::before {
    content: "";
    position: absolute;
    left: 2px;
    top: 10px;
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: var(--brand);
  }

  /* 使用路径步骤区 */
  .guide-layout {
    display: grid;
    grid-template-columns: minmax(0, .9fr) minmax(0, 1.1fr);
    gap: 54px;
    align-items: center;
  }

  .guide-intro h2,
  .steps-box h2 {
    font-size: 28px;
    line-height: 1.4;
    color: var(--brand-deep);
    margin-bottom: 16px;
  }

  .guide-intro > p,
  .steps-box > p {
    color: var(--muted);
    max-width: 560px;
  }

  .guide-intro .check-note {
    background: var(--brand-light);
    border-radius: var(--radius-md);
    padding: 20px 22px;
    margin-top: 26px;
    color: #2C4A43;
  }

  .guide-steps {
    display: grid;
    gap: 14px;
    counter-reset: step;
  }

  .guide-step {
    display: flex;
    gap: 17px;
    align-items: flex-start;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 20px 22px;
    box-shadow: var(--shadow-sm);
  }

  .step-num {
    flex-shrink: 0;
    width: 38px;
    height: 38px;
    border-radius: 50%;
    background: var(--brand);
    color: #fff;
    font-size: 15px;
    font-weight: 800;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 10px rgba(11, 112, 102, .2);
    line-height: 1;
  }

  .guide-step h3 {
    font-size: 16px;
    color: var(--brand-deep);
    line-height: 1.6;
    margin-bottom: 7px;
  }

  .guide-step p {
    font-size: 14px;
    color: var(--muted);
  }

  .guide-step strong {
    color: var(--brand);
    font-weight: 700;
  }

  /* FAQ */
  .faq-panel {
    background: #fff;
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
    margin-top: 38px;
  }

  .faq-item {
    border-bottom: 1px solid var(--border);
  }

  .faq-item:last-child {
    border-bottom: 0;
  }

  .faq-item summary {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
    cursor: pointer;
    list-style: none;
    padding: 20px 24px;
    font-size: 15px;
    font-weight: 700;
    color: var(--text);
    transition: color .2s;
  }

  .faq-item summary::-webkit-details-marker {
    display: none;
  }

  .faq-item summary:hover {
    background: #FBFAF7;
  }

  .faq-item[open] summary {
    color: var(--brand);
    background: #FBFCFA;
  }

  .faq-item summary::after {
    content: "";
    width: 20px;
    height: 20px;
    flex-shrink: 0;
    border-radius: 50%;
    background: var(--brand-light);
    position: relative;
    display: inline-block;
    transition: transform .2s, background-color .2s;
  }

  .faq-item summary::after {
    content: "+";
    color: var(--brand);
    font-size: 18px;
    font-weight: 700;
    text-align: center;
    line-height: 20px;
  }

  .faq-item[open] summary::after {
    transform: rotate(45deg);
    background: var(--accent-soft);
    color: var(--accent);
  }

  .faq-body {
    padding: 0 26px 22px;
    font-size: 14px;
    color: var(--muted);
    max-width: 1000px;
  }

  /* CTA区 */
  .page-cta {
    background: var(--brand-deep);
    color: #fff;
  }

  .cta-panel {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    border-radius: var(--radius-xl);
    background: radial-gradient(circle at 88% 10%, rgba(255, 255, 255, .12), rgba(255, 255, 255, 0) 40%), var(--brand-dark);
    padding: 54px;
    border: 1px solid rgba(255, 255, 255, .15);
    box-shadow: var(--shadow-lg);
    margin-top: 88px;
    margin-bottom: 88px;
    position: relative;
    overflow: hidden;
  }

  .cta-panel::after {
    content: "";
    position: absolute;
    right: -90px;
    top: -90px;
    width: 240px;
    height: 240px;
    border-radius: 50%;
    background: rgba(196, 87, 43, .26);
    filter: blur(50px);
  }

  .cta-panel .eyebrow {
    color: #BDE0D7;
  }

  .cta-panel .eyebrow::before {
    background: var(--accent);
  }

  .cta-panel h2 {
    font-size: 32px;
    line-height: 1.35;
    max-width: 620px;
    margin-bottom: 16px;
    color: #fff;
  }

  .cta-panel p {
    max-width: 720px;
    color: rgba(255, 255, 255, .82);
    margin-bottom: 28px;
  }

  .cta-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    position: relative;
    z-index: 1;
  }

  /* 页脚 */
  .site-footer {
    background: #0E2522;
    color: #B7C5C1;
    font-size: 13px;
  }

  .site-footer a {
    color: #B7C5C1;
  }

  .site-footer a:hover {
    color: #fff;
  }

  .footer__grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
    gap: 45px;
    padding: 62px 0 42px;
  }

  .footer__brand .logo__text strong {
    color: #fff;
  }

  .footer__brand .logo__text span {
    color: #88A29B;
  }

  .footer__desc {
    margin: 20px 0 0;
    max-width: 310px;
    line-height: 1.8;
    color: #8DAAA3;
  }

  .footer__head {
    color: #fff;
    font-size: 15px;
    font-weight: 700;
    margin-bottom: 18px;
  }

  .footer__nav {
    display: grid;
    gap: 2px;
  }

  .footer__nav a {
    padding: 6px 0;
    display: inline-flex;
    transition: color .18s;
  }

  .footer__contacts p {
    line-height: 1.9;
    padding: 7px 0;
    color: #8DAAA3;
    border-bottom: 1px dashed rgba(255, 255, 255, .08);
  }

  .footer__contacts p:last-child {
    border-bottom: 0;
  }

  .footer__bottom {
    border-top: 1px solid rgba(255, 255, 255, .08);
    display: flex;
    justify-content: space-between;
    gap: 16px;
    padding: 20px 0 26px;
    font-size: 12px;
    color: #718E87;
    flex-wrap: wrap;
  }

  .footer__bottom-note a {
    color: #8DAAA3;
    border-bottom: 1px solid transparent;
  }

  .footer__bottom-note a:hover {
    color: #fff;
    border-bottom-color: rgba(255, 255, 255, .4);
  }

  /* 响应式 */
  @media (max-width: 991px) {
    .header__inner {
      gap: 10px;
    }

    .site-nav {
      position: fixed;
      top: 72px;
      left: 16px;
      right: 16px;
      z-index: 80;
      margin: 0;
      background: #fff;
      border: 1px solid var(--border);
      border-radius: var(--radius-lg);
      box-shadow: var(--shadow-md);
      padding: 12px;
      opacity: 0;
      visibility: hidden;
      transform: translateY(-10px);
      transition: opacity .22s ease, transform .22s ease, visibility .22s ease;
      max-height: calc(100vh - 92px);
      overflow: auto;
    }

    .site-nav ul {
      flex-direction: column;
      align-items: stretch;
      gap: 0;
    }

    .nav-link {
      height: 45px;
      justify-content: flex-start;
      border-radius: var(--radius-sm);
      padding: 0 12px;
    }

    .nav-link::after {
      display: none;
    }

    .nav-link:hover,
    .nav-link.is-active {
      background: var(--brand-light);
      color: var(--brand);
    }

    .site-header.nav-open .site-nav {
      opacity: 1;
      visibility: visible;
      transform: translateY(0);
    }

    .header__actions .search {
      width: 180px;
    }

    .header__login {
      display: none;
    }

    .burger {
      display: inline-flex;
    }

    .overview-grid,
    .guide-layout {
      grid-template-columns: 1fr;
      gap: 34px;
    }

    .page-banner__grid {
      grid-template-columns: 1fr;
      gap: 30px;
      padding: 40px 0 52px;
    }

    .page-banner__text h1 {
      font-size: 36px;
    }

    .feature-grid {
      grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .overflow-grid-holder {
      overflow: hidden;
    }

    .cta-panel {
      padding: 42px;
    }
  }

  @media (max-width: 767px) {
    .container {
      padding-left: 16px;
      padding-right: 16px;
    }

    .section {
      padding: 58px 0;
    }

    .section-head {
      margin-bottom: 30px;
    }

    .section-head h2,
    .guide-intro h2,
    .steps-box h2 {
      font-size: 23px;
    }

    .header__actions {
      gap: 6px;
    }

    .search,
    .header__login {
      display: none;
    }

    .header__btn {
      min-width: 0;
      padding: 0 13px;
    }

    .header__btn span {
      font-size: 0;
    }

    .header__btn svg {
      display: block;
    }

    .site-header .header__btn {
      font-size: 0;
      line-height: 0;
    }

    .page-banner__text h1 {
      font-size: 32px;
    }

    .page-banner__shot {
      aspect-ratio: 16 / 11;
      border-radius: 16px;
    }

    .page-banner__grid {
      padding: 28px 0 44px;
    }

    .breadcrumb {
      font-size: 12px;
    }

    .feature-grid {
      grid-template-columns: 1fr;
      gap: 18px;
    }

    .feature-card__media {
      aspect-ratio: 16 / 9;
    }

    .overview-list {
      gap: 10px;
    }

    .overview-list li {
      padding: 12px 14px;
      font-size: 13px;
    }

    .overview-panel img,
    .overview-panel {
      min-height: 220px;
    }

    .guide-step {
      padding: 16px 16px;
    }

    .step-num {
      width: 32px;
      height: 32px;
      font-size: 13px;
    }

    .faq-item summary {
      padding: 16px 18px;
      font-size: 14px;
      line-height: 1.6;
    }

    .faq-body {
      padding: 0 18px 18px;
    }

    .cta-panel {
      padding: 34px 24px;
      margin-top: 58px;
      margin-bottom: 58px;
    }

    .cta-panel h2 {
      font-size: 24px;
    }

    .cta-actions .btn {
      width: 100%;
    }

    .footer__grid {
      grid-template-columns: 1fr;
      gap: 32px;
      padding: 48px 0 32px;
    }

    .footer__desc {
      max-width: 100%;
    }

    .footer__bottom {
      flex-direction: column;
      gap: 6px;
    }
  }

  @media (max-width: 520px) {
    .logo__text span {
      display: none;
    }

    .page-banner__text .lead {
      font-size: 15px;
    }

    .feature-card__body {
      padding: 18px;
    }

    .feature-card__body h3 {
      font-size: 17px;
    }

    .overview-list li {
      flex-wrap: wrap;
    }

    .cta-panel p {
      font-size: 14px;
    }
  }

/* roulang page: category3 */
:root {
  --brand: #0B7066;
  --brand-dark: #0A4F49;
  --brand-light: #E3EFEB;
  --accent: #C4572B;
  --bg: #F6F5F1;
  --surface: #FFFFFF;
  --surface-2: #FBFCF9;
  --text: #203431;
  --muted: #64746F;
  --border: #E4E2DA;
  --border-strong: #D3DBD6;
  --shadow-sm: 0 1px 2px rgba(30, 40, 38, .06);
  --shadow-md: 0 12px 32px rgba(20, 50, 45, .12);
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-xl: 26px;
  --radius-pill: 999px;
  --section-space: 88px;
  --font-sans: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
}
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-sans);
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}
body.nav-open { overflow: hidden; }
h1, h2, h3, h4, p { margin-top: 0; }
h1, h2, h3 {
  font-weight: 700;
  color: var(--text);
  line-height: 1.35;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
a:hover { color: var(--brand); }
ul, ol { margin: 0; padding: 0; }
button, input { font-family: inherit; font-size: 1rem; }
a:focus-visible, button:focus-visible, input:focus-visible, [tabindex]:focus-visible {
  outline: 2px solid var(--brand);
  outline-offset: 2px;
}
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding-left: 24px;
  padding-right: 24px;
}
main { display: block; }
.section-head {
  margin-bottom: 42px;
}
.section-head .eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--brand);
  font-size: .78rem;
  font-weight: 600;
  letter-spacing: .12em;
  text-transform: uppercase;
  margin-bottom: 10px;
}
.section-head h2 {
  font-size: 1.85rem;
  margin-bottom: 14px;
  letter-spacing: -.01em;
}
.section-head p {
  color: var(--muted);
  max-width: 760px;
  margin-bottom: 0;
}
.pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  min-height: 26px;
  padding: 0 12px;
  border-radius: var(--radius-pill);
  background: var(--brand-light);
  color: var(--brand-dark);
  font-size: .75rem;
  font-weight: 600;
  line-height: 1.6;
  white-space: nowrap;
}
.pill--soft {
  background: rgba(255, 255, 255, .92);
  color: var(--brand-dark);
}
.pill--warn {
  background: #F6E2DC;
  color: #9E4625;
}
.dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent);
  display: inline-block;
}
.btn {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 46px;
  padding: 0 22px;
  border-radius: var(--radius-pill);
  font-weight: 600;
  font-size: .938rem;
  line-height: 1.2;
  border: 1px solid transparent;
  cursor: pointer;
  transition: box-shadow .2s ease, background .2s ease, border-color .2s ease, transform .2s ease;
}
.btn svg {
  width: 17px;
  height: 17px;
  flex: 0 0 auto;
}
.btn--primary {
  background: var(--brand);
  color: #fff;
  border-color: var(--brand);
  box-shadow: inset 0 -3px 0 rgba(0, 0, 0, .12), 0 4px 14px rgba(11, 112, 102, .16);
}
.btn--primary:hover {
  background: #095F57;
  border-color: #095F57;
  color: #fff;
  box-shadow: 0 8px 24px rgba(11, 112, 102, .22);
}
.btn--secondary {
  background: transparent;
  color: var(--brand-dark);
  border-color: #B9CCC6;
}
.btn--secondary:hover {
  background: var(--brand-light);
  border-color: var(--brand-light);
  color: var(--brand-dark);
}
.btn--light {
  background: #fff;
  color: var(--brand-dark);
  border-color: #fff;
}
.btn--light:hover {
  background: #F0F5F1;
  border-color: #F0F5F1;
  color: var(--brand-dark);
  box-shadow: 0 10px 24px rgba(0, 0, 0, .12);
}
.btn--ghost-light {
  background: transparent;
  color: rgba(255, 255, 255, .94);
  border-color: rgba(255, 255, 255, .6);
}
.btn--ghost-light:hover {
  background: rgba(255, 255, 255, .12);
  border-color: #fff;
  color: #fff;
}
.btn--link {
  min-height: 42px;
  padding: 0 8px;
  color: var(--brand-dark);
  background: transparent;
}
.btn--link:hover { text-decoration: underline; }
.tag {
  display: inline-flex;
  align-items: center;
  min-height: 24px;
  padding: 0 10px;
  color: var(--brand-dark);
  background: var(--brand-light);
  border-radius: var(--radius-pill);
  font-size: .74rem;
  font-weight: 500;
  line-height: 1.6;
  white-space: nowrap;
}
.breadcrumb {
  margin: 0 0 24px;
  font-size: .8rem;
  color: var(--muted);
}
.breadcrumb ol {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  list-style: none;
}
.breadcrumb li {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.breadcrumb li::after { content: "/"; color: #A6B3AE; }
.breadcrumb li:last-child::after { display: none; }
.breadcrumb li[aria-current="page"] { color: var(--text); font-weight: 600; }
.breadcrumb a { color: var(--muted); }
.breadcrumb a:hover { color: var(--brand); }

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  height: 72px;
  background: rgba(246, 245, 241, .94);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid transparent;
  transition: box-shadow .25s ease, border-color .25s ease;
}
.site-header.is-scrolled {
  background: rgba(255, 255, 255, .96);
  border-bottom-color: var(--border);
  box-shadow: 0 8px 28px rgba(30, 40, 38, .08);
}
.header__inner {
  height: 72px;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  gap: 22px;
}
.logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  flex: 0 0 auto;
  color: var(--text); 
}
.logo:hover { color: var(--text); }
.logo__mark {
  display: inline-flex;
  width: 38px;
  height: 38px;
  align-items: center;
  justify-content: center;
  border-radius: 12px;
  background: var(--brand-light);
  color: var(--brand-dark);
  box-shadow: inset 0 0 0 1px rgba(11, 112, 102, .12);
}
.logo__mark svg { width: 22px; height: 22px; fill: currentColor; }
.logo__text { display: flex; flex-direction: column; line-height: 1.25; }
.logo__text strong {
  font-size: 1.1rem;
  letter-spacing: -.02em;
  font-weight: 800;
  color: var(--brand-dark);
}
.logo__text span {
  font-size: .7rem;
  color: var(--muted);
  letter-spacing: .08em;
}
.site-nav {
  display: block;
  margin-left: 8px;
}
.site-nav ul {
  list-style: none;
  display: flex;
  align-items: center;
  gap: 2px;
}
.nav-link {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 40px;
  padding: 0 14px;
  font-size: .9rem;
  font-weight: 500;
  color: #40514D;
  border-radius: var(--radius-pill);
  transition: color .2s ease, background .2s ease;
}
.nav-link:hover {
  color: var(--brand-dark);
  background: rgba(227, 239, 235, .7);
}
.nav-link.is-active {
  color: var(--brand-dark);
  font-weight: 700;
}
.nav-link.is-active::after {
  content: "";
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--brand);
  position: absolute;
  bottom: 5px;
  left: 50%;
  transform: translateX(-50%);
}
.header__actions {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-left: auto;
}
.search {
  width: 220px;
  height: 40px;
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 0 14px;
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-pill);
  background: rgba(255, 255, 255, .78);
  transition: border-color .2s ease, box-shadow .2s ease, background .2s ease;
}
.search:focus-within {
  border-color: var(--brand);
  box-shadow: 0 0 0 2px rgba(11, 112, 102, .14);
  background: #fff;
}
.search__icon {
  display: inline-flex;
  color: var(--muted);
  flex: 0 0 auto;
}
.search input {
  border: 0;
  padding: 0;
  background: transparent;
  width: 100%;
  min-width: 0;
  color: var(--text);
  font-size: .85rem;
  outline: none;
}
.search input::placeholder { color: #90A09B; }
.header__login {
  font-size: .88rem;
  font-weight: 500;
  color: var(--text);
  padding: 6px 10px;
  white-space: nowrap;
}
.header__login:hover { color: var(--brand); }
.header__btn {
  min-height: 40px;
  padding: 0 18px;
  font-size: .875rem;
  white-space: nowrap;
  box-shadow: inset 0 -2px 0 rgba(0, 0, 0, .10), 0 2px 8px rgba(11, 112, 102, .12);
}
.burger {
  display: none;
  width: 42px;
  height: 42px;
  border: 0;
  border-radius: 12px;
  background: transparent;
  color: var(--text);
  align-items: center;
  justify-content: center;
  cursor: pointer;
}
.burger:hover { background: var(--brand-light); }
.burger svg { width: 24px; height: 24px; fill: none; stroke: currentColor; stroke-width: 2; stroke-linecap: round; }

/* Footer */
.site-footer {
  background: #F0EFEA;
  border-top: 1px solid var(--border);
  padding-top: 68px;
  padding-bottom: 28px;
  color: var(--text);
}
.footer__grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1.2fr;
  gap: 40px;
}
.footer__brand .logo { margin-bottom: 16px; }
.footer__desc {
  color: var(--muted);
  font-size: .9rem;
  max-width: 320px;
  margin-bottom: 0;
}
.footer__head {
  font-size: .83rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 18px;
  letter-spacing: .06em;
  text-transform: uppercase;
}
.footer__nav {
  list-style: none;
  display: grid;
  gap: 10px;
}
.footer__nav a {
  color: var(--muted);
  font-size: .92rem;
}
.footer__nav a:hover { color: var(--brand); }
.footer__contacts {
  display: grid;
  gap: 8px;
  color: var(--muted);
  font-size: .85rem;
}
.footer__contacts p { margin: 0; }
.footer__bottom {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-top: 52px;
  padding-top: 24px;
  border-top: 1px solid var(--border);
  color: var(--muted);
  font-size: .8rem;
}
.footer__bottom a { color: var(--muted); }
.footer__bottom a:hover { color: var(--brand); }
.footer__bottom-note {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

/* Category hero */
.cat-hero {
  position: relative;
  padding: 48px 0 76px;
  background:
    linear-gradient(105deg, rgba(246,245,241,.98) 0%, rgba(246,245,241,.94) 36%, rgba(227,239,235,.72) 82%),
    url('/assets/images/backpic/back-1.png') center right / cover;
  border-bottom: 1px solid var(--border);
  overflow: hidden;
}
.cat-hero::before {
  content: "";
  position: absolute;
  top: -80px;
  right: -100px;
  width: 330px;
  height: 330px;
  background: radial-gradient(circle, rgba(196, 87, 43, .10), transparent 68%);
  pointer-events: none;
}
.cat-hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(300px, .95fr);
  gap: 60px;
  align-items: center;
  position: relative;
}
.cat-hero__body { max-width: 680px; }
.cat-hero__kicker {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--brand-dark);
  background: rgba(255, 255, 255, .72);
  border: 1px solid rgba(11, 112, 102, .14);
  border-radius: var(--radius-pill);
  padding: 6px 14px;
  font-size: .78rem;
  font-weight: 600;
  margin-bottom: 22px;
}
.cat-hero__body h1 {
  font-size: clamp(2.1rem, 4vw, 3.3rem);
  letter-spacing: -.02em;
  color: var(--brand-dark);
  margin-bottom: 18px;
}
.cat-hero__lead {
  color: #40514D;
  font-size: 1.06rem;
  margin-bottom: 28px;
  max-width: 620px;
}
.cat-hero__actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
  margin-bottom: 20px;
}
.hero-points {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 10px 20px;
  color: var(--muted);
  font-size: .9rem;
}
.hero-points li { position: relative; padding-left: 18px; }
.hero-points li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .68em;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--brand);
}
.cat-hero__visual {}
.info-compact {
  background: rgba(255, 255, 255, .82);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, .9);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-md);
  padding: 8px 26px 26px;
  max-width: 430px;
  margin-left: auto;
}
.info-compact__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 18px 0 8px;
  border-bottom: 1px dashed var(--border-strong);
  font-weight: 700;
  font-size: .9rem;
  color: var(--brand-dark);
}
.info-compact dl {
  margin: 0;
  display: grid;
}
.info-compact dl > div {
  display: grid;
  grid-template-columns: 92px 1fr;
  gap: 16px;
  padding: 14px 0;
  border-bottom: 1px solid var(--border);
}
.info-compact dl > div:last-child { border-bottom: 0; }
.info-compact dt {
  color: var(--muted);
  font-size: .83rem;
  padding-top: 2px;
}
.info-compact dd {
  margin: 0;
  font-size: .9rem;
  font-weight: 600;
  color: var(--text);
  text-align: right;
}
@media (max-width: 800px) {
  .cat-hero__grid { grid-template-columns: 1fr; gap: 32px; }
  .info-compact { margin-left: 0; }
}

/* Topic section */
.topic-section {
  padding: var(--section-space) 0;
}
.topic-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 26px;
}
.topic-card {
  display: flex;
  flex-direction: column;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: box-shadow .25s ease, border-color .25s ease, transform .25s ease;
}
.topic-card:hover {
  border-color: var(--brand);
  box-shadow: var(--shadow-md);
  transform: translateY(-3px);
}
.topic-card__media {
  aspect-ratio: 16 / 8.6;
  background: #E7EAE5;
  overflow: hidden;
}
.topic-card__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.topic-card__content {
  padding: 28px 30px 30px;
  display: flex;
  flex-direction: column;
  flex: 1;
}
.topic-card__content h3 {
  font-size: 1.25rem;
  margin-bottom: 10px;
}
.topic-card__content p {
  color: var(--muted);
  font-size: .95rem;
  margin-bottom: 20px;
}
.topic-card__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin-top: auto;
  padding-top: 10px;
}
.topic-card__cta {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: .88rem;
  font-weight: 600;
  color: var(--brand-dark);
  margin-top: 14px;
}
.topic-card__cta svg {
  width: 15px;
  height: 15px;
  transition: transform .2s ease;
}
.topic-card:hover .topic-card__cta svg { transform: translateX(4px); }

/* Reading guide */
.reading-guide {
  padding: var(--section-space) 0;
  background:
    linear-gradient(120deg, rgba(10,79,73,.98), rgba(11,112,102,.94)),
    url('/assets/images/backpic/back-2.webp') center / cover;
}
.reading-guide__inner {
  display: grid;
  grid-template-columns: minmax(0, .85fr) minmax(0, 1.15fr);
  gap: 70px;
  align-items: start;
}
.reading-guide__head h2 {
  color: #fff;
  font-size: 1.9rem;
  margin-bottom: 18px;
}
.reading-guide__head h2 span { color: #BDE2D6; }
.reading-guide__head p {
  color: rgba(255, 255, 255, .82);
  margin-bottom: 24px;
}
.reading-guide__lead-note {
  border-left: 4px solid #E5A888;
  background: rgba(255, 255, 255, .06);
  padding: 14px 20px;
  border-radius: 0 12px 12px 0;
  color: rgba(255, 255, 255, .92);
  font-size: .9rem;
}
.reading-guide__lead-note strong { color: #fff; }
.step-list {
  list-style: none;
  background: rgba(255, 255, 255, .1);
  border: 1px solid rgba(255, 255, 255, .18);
  border-radius: var(--radius-xl);
  overflow: hidden;
  backdrop-filter: blur(8px);
  box-shadow: 0 18px 40px rgba(0, 0, 0, .14);
}
.step-list li {
  display: grid;
  grid-template-columns: 52px 1fr;
  gap: 16px;
  align-items: start;
  padding: 24px 28px;
  border-bottom: 1px solid rgba(255, 255, 255, .16);
}
.step-list li:last-child { border-bottom: 0; }
.step-num {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--accent);
  color: #fff;
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: .95rem;
  box-shadow: inset 0 -2px 0 rgba(0,0,0,.15);
}
.step-list h3 {
  color: #fff;
  font-size: 1rem;
  margin-bottom: 5px;
}
.step-list p {
  color: rgba(255, 255, 255, .76);
  margin-bottom: 0;
  font-size: .9rem;
}
@media (max-width: 900px) {
  .reading-guide__inner { grid-template-columns: 1fr; gap: 28px; }
}

/* Type cards */
.type-section {
  padding: var(--section-space) 0;
  background: var(--surface-2);
}
.type-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}
.type-card {
  display: flex;
  gap: 18px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 26px 24px;
  box-shadow: var(--shadow-sm);
  transition: box-shadow .25s ease, border-color .25s ease;
}
.type-card:hover {
  box-shadow: var(--shadow-md);
  border-color: var(--brand);
}
.type-card__icon {
  width: 46px;
  height: 46px;
  flex: 0 0 46px;
  border-radius: 14px;
  background: var(--brand-light);
  color: var(--brand-dark);
  display: inline-flex;
  align-items: center;
  justify-content: center;
}
.type-card__icon svg { width: 22px; height: 22px; fill: none; stroke: currentColor; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
.type-card__body h3 {
  font-size: 1.12rem;
  margin-bottom: 8px;
}
.type-card__body p {
  color: var(--muted);
  margin-bottom: 0;
  font-size: .91rem;
}
.type-card__tag {
  margin-top: 12px;
}
@media (max-width: 767px) {
  .type-grid { grid-template-columns: 1fr; }
  .type-card { flex-wrap: wrap; }
}

/* FAQ */
.faq-section {
  padding: var(--section-space) 0;
}
.faq-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-sm);
  padding: 4px 22px;
}
.faq-card details {
  border-bottom: 1px solid var(--border);
  border-radius: 0;
}
.faq-card details:last-child {
  border-bottom: 0;
}
.faq-card summary {
  position: relative;
  list-style: none;
  cursor: pointer;
  font-size: 1rem;
  font-weight: 600;
  color: var(--text);
  padding: 22px 48px 22px 4px;
  transition: color .2s ease;
}
.faq-card summary::-webkit-details-marker { display: none; }
.faq-card summary:hover { color: var(--brand); }
.faq-card summary::before {
  content: "+";
  position: absolute;
  right: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--brand-light);
  color: var(--brand-dark);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  transition: transform .25s ease, background .25s ease;
}
.faq-card details[open] summary { color: var(--brand); }
.faq-card details[open] summary::before {
  transform: translateY(-50%) rotate(135deg);
  background: var(--brand);
  color: #fff;
}
.faq-item__body {
  padding: 0 50px 26px 4px;
  color: var(--muted);
  font-size: .93rem;
}

/* CTA */
.cta-band {
  padding: 0 0 var(--section-space);
}
.cta-band__inner {
  position: relative;
  background: linear-gradient(120deg, #0A4F49, #0B7066);
  border-radius: 30px;
  padding: 46px 52px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 36px;
  overflow: hidden;
  color: #fff;
  box-shadow: 0 16px 38px rgba(10, 79, 73, .22);
}
.cta-band__inner::after {
  content: "";
  position: absolute;
  right: -70px;
  top: -70px;
  width: 230px;
  height: 230px;
  border-radius: 50%;
  border: 42px solid rgba(255, 255, 255, .08);
}
.cta-band__head { position: relative; z-index: 2; }
.cta-band__head .eyebrow {
  color: #BFE1D7;
  text-transform: uppercase;
  letter-spacing: .1em;
  font-weight: 600;
  font-size: .78rem;
  margin-bottom: 8px;
  display: block;
}
.cta-band__head h2 {
  color: #fff;
  font-size: 1.6rem;
  margin-bottom: 10px;
}
.cta-band__head p {
  color: rgba(255, 255, 255, .78);
  margin-bottom: 0;
  max-width: 660px;
  font-size: .92rem;
}
.cta-band__actions {
  position: relative;
  z-index: 2;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  flex: 0 0 auto;
}
@media (max-width: 820px) {
  .cta-band__inner { flex-direction: column; align-items: flex-start; padding: 34px 28px; }
}

/* Section rhythm override */
.topic-section,
.reading-guide,
.type-section,
.faq-section,
.cta-band {
  padding-left: 0;
  padding-right: 0;
}

/* Responsive */
@media (max-width: 1100px) {
  .header__inner { gap: 14px; }
  .site-nav { margin-left: 0; }
  .nav-link { padding: 0 9px; font-size: .86rem; }
  .search { width: 170px; }
}
@media (max-width: 920px) {
  .search { width: 145px; }
  .search input { font-size: .8rem; }
  .header__actions { gap: 6px; }
}
@media (max-width: 820px) {
  .site-nav {
    position: fixed;
    top: 72px;
    left: 0;
    right: 0;
    width: 100%;
    height: calc(100vh - 72px);
    background: rgba(255, 255, 255, .98);
    padding: 16px 24px 28px;
    margin: 0;
    display: block;
    flex-direction: column;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: opacity .22s ease, transform .22s ease, visibility .22s ease;
    border-top: 1px solid var(--border);
    overflow-y: auto;
    z-index: 99;
  }
  body.nav-open .site-nav {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
  }
  .site-nav ul {
    flex-direction: column;
    align-items: flex-start;
    gap: 4px;
  }
  .nav-link {
    width: 100%;
    justify-content: flex-start;
    min-height: 48px;
    font-size: 1rem;
    padding: 0 12px;
  }
  .nav-link.is-active::after {
    display: none;
  }
  .nav-link.is-active {
    background: var(--brand-light);
  }
  .burger {
    display: inline-flex;
  }
  .header__actions {
    gap: 4px;
    margin-left: auto;
  }
  .search {
    width: 44px;
    height: 40px;
    justify-content: center;
    padding: 0;
    border-radius: 50%;
  }
  .search input { display: none; }
  .search__icon { margin: 0; }
}
@media (max-width: 560px) {
  .header__inner {
    padding: 0 16px;
    gap: 8px;
  }
  .logo__mark {
    width: 34px;
    height: 34px;
    border-radius: 10px;
  }
  .logo__text strong {
    font-size: .98rem;
  }
  .logo__text span {
    font-size: .66rem;
  }
  .header__login { display: none; }
  .header__btn {
    width: 42px;
    height: 40px;
    padding: 0;
    gap: 0;
    border-radius: 50%;
    font-size: 0;
  }
  .header__btn svg {
    width: 18px;
    height: 18px;
  }
  .search {
    width: 40px;
    height: 40px;
  }
  .container {
    padding-left: 16px;
    padding-right: 16px;
  }
  .footer__grid {
    grid-template-columns: 1fr;
    gap: 28px;
  }
  .cat-hero {
    padding-top: 28px;
    background:
      linear-gradient(180deg, rgba(246,245,241,.97) 0%, rgba(246,245,241,.92) 55%, rgba(227,239,235,.7) 100%),
      url('/assets/images/backpic/back-1.png') center / cover no-repeat;
  }
  .cat-hero__grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }
  .topic-grid {
    grid-template-columns: 1fr;
  }
  .type-grid {
    grid-template-columns: 1fr;
  }
  .step-list li {
    grid-template-columns: 40px 1fr;
    gap: 12px;
    padding: 18px 16px;
  }
  .faq-card {
    padding: 4px 14px;
  }
  .faq-card summary {
    font-size: .96rem;
  }
  .faq-item__body {
    padding-right: 16px;
  }
}