/* roulang page: index */
:root{
  --primary:#F4621B;
  --primary-h:#D64F0C;
  --primary-a:#B8430A;
  --teal:#12525C;
  --gold:#FFC24B;
  --ink:#171A21;
  --text:#3E4453;
  --muted:#7C8394;
  --line:#ECE6DE;
  --card-line:#EFE9E1;
  --bg:#FAF7F3;
  --card:#FFFFFF;
  --dark:#14161C;
  --ok:#1F9D6B;
  --warn:#E08B00;
  --err:#D2453B;
  --info:#2F7DF6;
  --r-card:14px;
  --r-big:20px;
  --r-btn:10px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(23,26,33,.06);
  --sh-2:0 8px 24px rgba(23,26,33,.08);
  --sh-3:0 14px 34px rgba(23,26,33,.14);
  --s-1:4px; --s-2:8px; --s-3:12px; --s-4:16px; --s-5:24px; --s-6:32px; --s-7:48px; --s-8:64px; --s-9:96px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:-apple-system,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",sans-serif;
  font-size:16px;
  line-height:1.9;
  color:var(--text);
  background:var(--bg);
  overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none;transition:color .18s ease}
button{font-family:inherit;cursor:pointer;border:0;background:none}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p,dl,dd,figure{margin:0}
h1,h2,h3,h4{color:var(--ink);font-weight:800;letter-spacing:.2px}
:focus-visible{outline:3px solid rgba(244,98,27,.30);outline-offset:2px;border-radius:6px}
.num{font-variant-numeric:tabular-nums}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 24px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;line-height:1;
  transition:background-color .18s ease,color .18s ease,border-color .18s ease,transform .18s ease,box-shadow .18s ease;
  white-space:nowrap;
}
.btn--primary{background:var(--primary);color:#fff;box-shadow:var(--sh-1)}
.btn--primary:hover{background:var(--primary-h);transform:translateY(-1px);box-shadow:var(--sh-2)}
.btn--primary:active{background:var(--primary-a);transform:translateY(0)}
.btn--ghost{background:#fff;color:var(--teal);border:1.5px solid var(--teal)}
.btn--ghost:hover{background:rgba(18,82,92,.08);transform:translateY(-1px)}
.btn--sm{height:38px;padding:0 16px;font-size:14px;border-radius:var(--r-btn)}
.btn--block{width:100%}
.btn[disabled],.btn.is-disabled{opacity:.4;cursor:not-allowed;transform:none;box-shadow:none}
.link-cta{display:inline-flex;align-items:center;gap:6px;color:var(--primary);font-weight:600;font-size:15px}
.link-cta span{transition:transform .18s ease}
.link-cta:hover span{transform:translateX(3px)}
.link-cta:hover{text-decoration:underline}

/* ---------- 顶部信息条 ---------- */
.topbar{background:var(--dark);color:#C6C9D2;font-size:13px;line-height:1.7}
.topbar__inner{display:flex;align-items:center;gap:16px;min-height:38px;padding-top:4px;padding-bottom:4px}
.topbar__domain{color:#fff;font-weight:600;letter-spacing:.4px}
.topbar__note{color:#9AA0AE;flex:1;text-align:center}
.topbar__links{display:flex;gap:18px}
.topbar__links a{color:#E4E6EC}
.topbar__links a:hover{color:var(--gold)}

/* ---------- 主导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;background:rgba(250,247,243,.94);
  backdrop-filter:saturate(180%) blur(10px);
  border-bottom:1px solid transparent;transition:box-shadow .2s ease,border-color .2s ease;
}
.site-header.is-stuck{box-shadow:var(--sh-1);border-bottom-color:var(--line)}
.nav__inner{display:flex;align-items:center;gap:24px;min-height:70px}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0}
.brand__mark{
  width:40px;height:40px;border-radius:var(--r-btn);background:var(--primary);color:#fff;
  display:flex;align-items:center;justify-content:center;font-size:19px;font-weight:800;flex-shrink:0;
  box-shadow:var(--sh-1);
}
.brand__text{display:flex;flex-direction:column;line-height:1.25;font-size:17px;font-weight:800;color:var(--ink)}
.brand__text em{font-style:normal;font-size:11.5px;font-weight:400;color:var(--muted);letter-spacing:.3px}
.nav__menu{display:flex;align-items:center;gap:6px;margin-left:8px;flex:1}
.nav__link{
  position:relative;padding:8px 12px;font-size:15px;color:var(--text);font-weight:500;border-radius:8px;
}
.nav__link::after{
  content:"";position:absolute;left:12px;right:12px;bottom:0;height:2px;border-radius:2px;
  background:var(--primary);transform:scaleX(0);transform-origin:center;transition:transform .2s ease;
}
.nav__link:hover{color:var(--primary)}
.nav__link:hover::after{transform:scaleX(1)}
.nav__link.is-active{color:var(--primary);font-weight:700}
.nav__link.is-active::after{transform:scaleX(1)}
.nav__cta{height:42px;padding:0 20px;font-size:14.5px}
.nav__burger{
  display:none;width:44px;height:44px;border-radius:var(--r-btn);
  flex-direction:column;align-items:center;justify-content:center;gap:5px;background:#fff;border:1px solid var(--card-line);
}
.nav__burger span{display:block;width:18px;height:2px;border-radius:2px;background:var(--ink);transition:transform .2s ease}

/* ---------- 抽屉 ---------- */
.drawer{
  position:fixed;inset:0;z-index:90;background:#fff;display:flex;flex-direction:column;
  transform:translateX(100%);transition:transform .26s ease;visibility:hidden;
}
.drawer.is-open{transform:translateX(0);visibility:visible}
.drawer__head{display:flex;align-items:center;justify-content:space-between;padding:14px 20px;border-bottom:1px solid var(--line)}
.drawer__title{font-size:16px;font-weight:800;color:var(--ink)}
.drawer__close{width:44px;height:44px;border-radius:var(--r-btn);font-size:26px;line-height:1;color:var(--muted);display:flex;align-items:center;justify-content:center}
.drawer__close:hover{background:var(--bg);color:var(--primary)}
.drawer__nav{flex:1;overflow-y:auto}
.drawer__nav a{display:flex;align-items:center;min-height:52px;padding:0 20px;font-size:16px;color:var(--ink);border-bottom:1px solid var(--line)}
.drawer__nav a.is-active{color:var(--primary);font-weight:700}
.drawer__foot{padding:16px 20px 28px;border-top:1px solid var(--line)}
.drawer__domain{display:block;margin-top:12px;text-align:center;font-size:13px;color:var(--muted)}

/* ---------- 通用板块 ---------- */
.section{padding:48px 0}
.section--alt{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section__head{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:28px;flex-wrap:wrap}
.section__title{font-size:clamp(21px,2.6vw,30px);line-height:1.35;position:relative;padding-left:14px}
.section__title::before{
  content:"";position:absolute;left:0;top:.22em;bottom:.22em;width:4px;border-radius:3px;background:var(--primary);
}
.section__sub{color:var(--muted);font-size:14px;margin-top:6px;padding-left:14px}
.section__actions{display:flex;align-items:center;gap:16px}

/* ---------- Hero ---------- */
.hero{padding:40px 0 56px;background:
  radial-gradient(900px 380px at 88% -10%, rgba(255,194,75,.20), transparent 62%),
  linear-gradient(180deg,#FAF7F3 0%,#F6F0E9 100%);
  border-bottom:1px solid var(--line);
}
.hero__grid{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;background:#fff;border:1px solid var(--card-line);
  color:var(--teal);font-size:13px;font-weight:600;padding:6px 14px;border-radius:var(--r-pill);box-shadow:var(--sh-1);
}
.eyebrow i{width:7px;height:7px;border-radius:50%;background:var(--primary);display:block}
.hero h1{font-size:clamp(26px,4.2vw,42px);line-height:1.28;margin:18px 0 16px;font-weight:800}
.hero h1 b{color:var(--primary);font-weight:800}
.hero__lead{font-size:17px;color:var(--text);max-width:540px}
.hero__btns{display:flex;gap:14px;margin-top:28px;flex-wrap:wrap}
.hero__trust{display:flex;gap:32px;margin-top:32px;flex-wrap:wrap}
.trust-item{display:flex;align-items:center;gap:9px;font-size:14px;color:var(--ink);font-weight:600}
.trust-item svg{width:20px;height:20px;stroke:var(--primary);fill:none;stroke-width:1.8}
.hero__media{position:relative}
.hero__figure{
  position:relative;aspect-ratio:16/10;border-radius:var(--r-big);overflow:hidden;
  box-shadow:var(--sh-2);background:rgba(244,98,27,.08);
}
.hero__figure img{width:100%;height:100%;object-fit:cover}
.hero__figure::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(to top right,rgba(20,22,28,.72),rgba(20,22,28,.12) 55%,transparent 78%);
}
.hero__figure-text{position:absolute;left:24px;bottom:22px;right:24px;color:#fff;z-index:2}
.hero__figure-text strong{display:block;font-size:19px;font-weight:800;letter-spacing:.3px}
.hero__figure-text span{font-size:13px;color:rgba(255,255,255,.82)}
.hero__card{
  position:absolute;right:-8px;bottom:-22px;width:210px;background:#fff;border:1px solid var(--card-line);
  border-radius:var(--r-card);box-shadow:var(--sh-2);padding:14px 16px;
}
.hero__card b{display:block;font-size:22px;color:var(--primary);line-height:1.3}
.hero__card small{display:block;font-size:12.5px;color:var(--muted);line-height:1.7;margin-top:2px}

/* ---------- 主推大卡 ---------- */
.feature-card{
  display:grid;grid-template-columns:40% 1fr;overflow:hidden;background:var(--card);
  border:1px solid var(--card-line);border-radius:18px;box-shadow:var(--sh-1);
  transition:box-shadow .22s ease,transform .22s ease;
}
.feature-card:hover{box-shadow:var(--sh-3);transform:translateY(-2px)}
.feature-card__media{position:relative;aspect-ratio:4/3;background:rgba(244,98,27,.08);overflow:hidden}
.feature-card__media img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease}
.feature-card:hover .feature-card__media img{transform:scale(1.03)}
.feature-card__body{padding:28px 32px;display:flex;flex-direction:column;gap:16px}
.badges{display:flex;gap:8px;flex-wrap:wrap}
.badge{
  display:inline-flex;align-items:center;gap:5px;font-size:12.5px;font-weight:600;
  padding:4px 12px;border-radius:var(--r-pill);background:rgba(18,82,92,.08);color:var(--teal);
}
.badge--gold{background:rgba(255,194,75,.22);color:#8A5A00}
.badge--primary{background:rgba(244,98,27,.12);color:var(--primary-h)}
.feature-card h3{font-size:22px;line-height:1.45}
.feature-card__desc{font-size:15px;color:var(--text)}
.spec-list{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:16px 0}
.spec-list div{display:flex;flex-direction:column;gap:2px}
.spec-list dt{font-size:12.5px;color:var(--muted)}
.spec-list dd{font-size:15px;font-weight:700;color:var(--ink)}
.feature-card__foot{display:flex;align-items:center;gap:16px;flex-wrap:wrap;margin-top:auto}
.price{font-size:15px;font-weight:700;color:var(--teal);font-variant-numeric:tabular-nums}
.price small{display:block;font-size:12.5px;font-weight:400;color:var(--muted)}

/* ---------- 网格卡 ---------- */
.grid-cards{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.card{
  display:flex;flex-direction:column;background:var(--card);border:1px solid var(--card-line);
  border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-1);
  transition:transform .22s ease,box-shadow .22s ease;
}
.card:hover{transform:translateY(-2px);box-shadow:var(--sh-3)}
.card__media{position:relative;aspect-ratio:4/3;overflow:hidden;background:rgba(244,98,27,.08)}
.card__media img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease}
.card:hover .card__media img{transform:scale(1.03)}
.card__tag{
  position:absolute;left:12px;top:12px;font-size:12px;font-weight:700;color:#fff;
  background:var(--primary);padding:3px 11px;border-radius:var(--r-pill);z-index:2;box-shadow:var(--sh-1);
}
.card__tag--gold{background:var(--gold);color:#5A3A00}
.card__tag--teal{background:var(--teal)}
.card__body{padding:18px;display:flex;flex-direction:column;gap:10px;flex:1}
.card__title{
  font-size:16.5px;font-weight:700;color:var(--ink);line-height:1.5;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.card:hover .card__title{color:var(--primary)}
.card__desc{
  font-size:14px;color:var(--muted);line-height:1.8;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.card__foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:10px;padding-top:12px;border-top:1px solid var(--line)}
.chip{display:inline-flex;align-items:center;font-size:12.5px;padding:3px 11px;border-radius:var(--r-pill);background:var(--bg);color:var(--muted);border:1px solid var(--line)}
.chip--cat{background:rgba(244,98,27,.10);color:var(--primary-h);border-color:transparent;font-weight:600}
.card--wide{grid-column:span 2}
.card--wide .card__media{aspect-ratio:16/9}
.card--wide .card__title{font-size:20px;-webkit-line-clamp:2}

/* ---------- 最新信息（CMS） ---------- */
.news-filters{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:20px}
.news-filters span{
  font-size:13px;padding:5px 14px;border-radius:var(--r-pill);border:1px solid var(--line);
  background:#fff;color:var(--muted);cursor:default;
}
.news-filters span.is-on{background:var(--primary);border-color:var(--primary);color:#fff;font-weight:600}
.news-list{border-top:1px solid var(--line)}
.news-item{display:grid;grid-template-columns:220px 1fr;gap:24px;padding:22px 0;border-bottom:1px solid var(--line)}
.news-item__thumb{aspect-ratio:4/3;border-radius:var(--r-card);overflow:hidden;background:rgba(244,98,27,.08);display:block}
.news-item__thumb img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease}
.news-item__thumb:hover img{transform:scale(1.03)}
.news-item__body{display:flex;flex-direction:column;gap:8px;justify-content:center}
.news-item__title{font-size:18px;font-weight:700;color:var(--ink);line-height:1.55}
.news-item__title:hover{color:var(--primary)}
.news-item__desc{font-size:14.5px;color:var(--muted);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;line-height:1.85}
.news-item__meta{display:flex;align-items:center;gap:14px;font-size:13px;color:var(--muted);flex-wrap:wrap}
.empty-state{
  display:flex;flex-direction:column;align-items:center;gap:12px;padding:56px 20px;text-align:center;
  border:1px dashed var(--line);border-radius:var(--r-card);background:#fff;
}
.empty-state svg{width:40px;height:40px;stroke:var(--muted);fill:none;stroke-width:1.5}
.empty-state p{font-size:15px;color:var(--muted)}
.skeleton-row{display:grid;grid-template-columns:220px 1fr;gap:24px;padding:22px 0;border-bottom:1px solid var(--line)}
.skeleton{background:linear-gradient(90deg,#F1ECE6 25%,#E7E0D8 37%,#F1ECE6 63%);background-size:400% 100%;animation:sk 1.4s ease infinite;border-radius:8px}
@keyframes sk{0%{background-position:100% 50%}100%{background-position:0 50%}}

/* ---------- 评价轮播 ---------- */
.review-wrap{position:relative}
.review-track{display:flex;gap:24px;overflow-x:auto;scroll-snap-type:x mandatory;padding:4px 2px 14px;scrollbar-width:none}
.review-track::-webkit-scrollbar{display:none}
.review-card{
  flex:0 0 calc((100% - 48px)/3);scroll-snap-align:start;background:var(--card);
  border:1px solid var(--card-line);border-radius:var(--r-card);padding:24px;box-shadow:var(--sh-1);
  display:flex;flex-direction:column;gap:12px;
}
.review-card__top{display:flex;align-items:center;gap:12px}
.avatar{
  width:44px;height:44px;border-radius:var(--r-pill);background:rgba(18,82,92,.10);color:var(--teal);
  display:flex;align-items:center;justify-content:center;font-weight:700;font-size:15px;flex-shrink:0;
}
.review-card__name{font-size:15px;font-weight:700;color:var(--ink)}
.review-card__role{font-size:12.5px;color:var(--muted)}
.stars{display:flex;gap:3px}
.stars i{width:14px;height:14px;display:block;background:var(--gold);clip-path:polygon(50% 0,61% 35%,98% 35%,68% 57%,79% 91%,50% 70%,21% 91%,32% 57%,2% 35%,39% 35%)}
.review-card__text{font-size:14.5px;color:var(--text);line-height:1.85}
.review-nav{display:flex;align-items:center;gap:12px;margin-top:20px;justify-content:center}
.review-btn{
  width:40px;height:40px;border-radius:var(--r-pill);border:1px solid var(--card-line);background:#fff;
  display:flex;align-items:center;justify-content:center;color:var(--teal);transition:all .18s ease;
}
.review-btn:hover{background:var(--teal);color:#fff;border-color:var(--teal)}
.dots{display:flex;gap:8px;align-items:center}
.dots i{width:8px;height:8px;border-radius:var(--r-pill);background:var(--line);display:block;transition:all .2s ease}
.dots i.is-on{width:22px;background:var(--primary)}

/* ---------- 保障条 ---------- */
.guarantee{background:var(--dark);color:#D6D8DE;padding:48px 0}
.guarantee__grid{display:grid;grid-template-columns:repeat(4,1fr);gap:32px}
.g-item{display:flex;flex-direction:column;gap:10px}
.g-item svg{width:28px;height:28px;stroke:var(--gold);fill:none;stroke-width:1.6}
.g-item strong{color:#fff;font-size:16px;font-weight:700}
.g-item span{font-size:13.5px;color:#9AA0AE;line-height:1.8}

/* ---------- CTA ---------- */
.cta-band{
  background:#fff;border:1.5px solid rgba(244,98,27,.35);border-radius:var(--r-big);
  padding:36px 40px;display:grid;grid-template-columns:1fr 300px;gap:32px;align-items:center;
  box-shadow:var(--sh-1);
}
.cta-band h2{font-size:clamp(20px,2.4vw,27px);line-height:1.4;margin-bottom:10px}
.cta-band p{font-size:15px;color:var(--text);margin-bottom:20px}
.cta-band__media{aspect-ratio:16/10;border-radius:var(--r-card);overflow:hidden;background:rgba(244,98,27,.08)}
.cta-band__media img{width:100%;height:100%;object-fit:cover}

/* ---------- FAQ ---------- */
.faq{border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 0;text-align:left;font-size:17px;font-weight:600;color:var(--ink);line-height:1.6;
}
.faq-q:hover{color:var(--primary)}
.faq-icon{
  width:26px;height:26px;border-radius:var(--r-pill);border:1.5px solid var(--line);position:relative;flex-shrink:0;
  transition:transform .22s ease,border-color .22s ease,background-color .22s ease;
}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--primary);border-radius:2px;transform:translate(-50%,-50%);
}
.faq-icon::before{width:11px;height:2px}
.faq-icon::after{width:2px;height:11px;transition:opacity .2s ease}
.faq-item.is-open .faq-icon{transform:rotate(180deg);border-color:var(--primary);background:rgba(244,98,27,.08)}
.faq-item.is-open .faq-icon::after{opacity:0}
.faq-a{max-height:0;overflow:hidden;transition:max-height .28s ease}
.faq-a__inner{background:var(--bg);border-radius:var(--r-card);padding:16px;font-size:15px;line-height:1.9;color:var(--text);margin-bottom:18px}
.faq-item.is-open .faq-a{max-height:420px}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--dark);color:#A8ADB9;padding:56px 0 0;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.3fr;gap:32px;padding-bottom:40px}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px}
.footer-brand .brand__mark{box-shadow:none}
.footer-brand span{color:#fff;font-size:16px;font-weight:800}
.footer-grid p{font-size:13.5px;line-height:1.9;color:#9AA0AE}
.footer-grid h4{color:var(--gold);font-size:14px;font-weight:600;margin-bottom:14px}
.footer-links{display:flex;flex-direction:column;gap:2px}
.footer-links a{font-size:14px;line-height:2;color:#A8ADB9}
.footer-links a:hover{color:var(--gold)}
.footer-copy{
  border-top:1px solid rgba(255,255,255,.08);padding:18px 0;font-size:13px;color:#7C8394;
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
}
.footer-copy span{color:#9AA0AE}

/* ---------- 返回顶部 ---------- */
.to-top{
  position:fixed;right:20px;bottom:24px;width:46px;height:46px;border-radius:var(--r-pill);
  background:var(--primary);color:#fff;display:flex;align-items:center;justify-content:center;
  box-shadow:var(--sh-2);opacity:0;visibility:hidden;transform:translateY(8px);transition:all .22s ease;z-index:50;
}
.to-top.is-show{opacity:1;visibility:visible;transform:translateY(0)}
.to-top:hover{background:var(--primary-h)}

/* ---------- 图片兜底 ---------- */
img.is-fallback{background:rgba(244,98,27,.08)}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .grid-cards{grid-template-columns:repeat(3,1fr)}
}
@media (max-width:991px){
  .section{padding:56px 0}
  .nav__menu,.nav__cta{display:none}
  .nav__burger{display:flex}
  .nav__inner{justify-content:space-between}
  .hero__grid{grid-template-columns:1fr;gap:36px}
  .hero__card{position:static;width:100%;margin-top:16px;box-shadow:var(--sh-1)}
  .feature-card{grid-template-columns:1fr}
  .guarantee__grid{grid-template-columns:repeat(2,1fr);gap:24px}
  .cta-band{grid-template-columns:1fr;padding:28px 24px}
  .cta-band__media{display:none}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
  .review-card{flex:0 0 calc((100% - 24px)/2)}
}
@media (max-width:767px){
  .grid-cards{grid-template-columns:repeat(2,1fr);gap:16px}
  .card--wide{grid-column:span 2}
  .news-item,.skeleton-row{grid-template-columns:1fr;gap:14px}
  .news-item__thumb{aspect-ratio:16/9}
  .spec-list{grid-template-columns:1fr 1fr;gap:14px}
  .topbar__note{display:none}
  .topbar__inner{justify-content:space-between}
}
@media (max-width:575px){
  .container{padding:0 16px}
  .section{padding:48px 0}
  .hero{padding:28px 0 44px}
  .grid-cards{grid-template-columns:1fr}
  .card--wide{grid-column:span 1}
  .review-card{flex:0 0 100%}
  .hero__btns .btn{width:100%}
  .hero__trust{gap:16px 24px}
  .footer-grid{grid-template-columns:1fr}
  .footer-copy{flex-direction:column;gap:6px}
  .feature-card__body{padding:20px}
  .guarantee__grid{grid-template-columns:1fr 1fr;gap:20px}
  .brand__text{font-size:15px}
  .brand__text em{display:none}
}

/* roulang page: article */
:root{
  --primary:#F4621B;
  --primary-hover:#D64F0C;
  --primary-active:#B8430A;
  --primary-soft:rgba(244,98,27,.08);
  --secondary:#12525C;
  --secondary-soft:rgba(18,82,92,.08);
  --gold:#FFC24B;
  --ink:#171A21;
  --text:#3E4453;
  --muted:#7C8394;
  --line:#ECE6DE;
  --card-line:#EFE9E1;
  --page:#FAF7F3;
  --card:#FFFFFF;
  --dark:#14161C;
  --success:#1F9D6B;
  --warning:#E08B00;
  --danger:#D2453B;
  --radius-card:14px;
  --radius-big:20px;
  --radius-btn:10px;
  --radius-pill:999px;
  --shadow-1:0 1px 2px rgba(23,26,33,.06);
  --shadow-2:0 8px 24px rgba(23,26,33,.08);
  --shadow-3:0 14px 34px rgba(23,26,33,.14);
  --font:-apple-system,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.9;
  color:var(--text);
  background:var(--page);
  overflow-x:hidden;
}
img{max-width:100%;display:block;border:0}
a{color:var(--primary);text-decoration:none;transition:color .18s ease}
a:hover{color:var(--primary-hover)}
h1,h2,h3,h4{color:var(--ink);margin:0;font-weight:700;line-height:1.35}
p{margin:0 0 1.2em}
ul,ol{margin:0 0 1.2em;padding-left:1.3em}
button{font-family:inherit;font-size:inherit;cursor:pointer}
input,textarea{font-family:inherit}
:focus-visible{outline:3px solid rgba(244,98,27,.35);outline-offset:2px;border-radius:6px}
.skip-link{position:absolute;left:-9999px;top:0;background:var(--primary);color:#fff;padding:10px 16px;z-index:99}
.skip-link:focus{left:12px;top:12px;color:#fff}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}

/* 顶部信息条 */
.topbar{background:var(--dark);color:#B9BEC9;font-size:13px;line-height:1.7}
.topbar__inner{display:flex;align-items:center;gap:16px;min-height:38px;padding-top:4px;padding-bottom:4px}
.topbar__domain{color:#EDEFF3;letter-spacing:.02em;font-variant-numeric:tabular-nums}
.topbar__tip{color:#9AA1AE;flex:1}
.topbar__actions{display:flex;gap:18px}
.topbar__actions a{color:#D8DCE4;font-size:13px}
.topbar__actions a:hover{color:var(--gold)}

/* 主导航 */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(250,247,243,.96);
  border-bottom:1px solid var(--line);
  backdrop-filter:saturate(140%) blur(8px);
}
.site-header.is-stuck{box-shadow:var(--shadow-1)}
.header__inner{display:flex;align-items:center;gap:24px;min-height:68px}
.brand{display:flex;align-items:center;gap:10px;color:var(--ink);flex-shrink:0}
.brand:hover{color:var(--ink)}
.brand__mark{
  width:38px;height:38px;border-radius:12px;
  background:linear-gradient(140deg,var(--primary),#F98A3C);
  color:#fff;font-weight:800;font-size:19px;
  display:flex;align-items:center;justify-content:center;
  box-shadow:var(--shadow-1);
}
.brand__text{display:flex;flex-direction:column;line-height:1.25}
.brand__text strong{font-size:16px;font-weight:800;letter-spacing:.01em}
.brand__text em{font-style:normal;font-size:12px;color:var(--muted)}
.nav__menu{display:flex;align-items:center;gap:4px;flex:1;flex-wrap:wrap}
.nav__link{
  position:relative;display:inline-flex;align-items:center;height:40px;
  padding:0 12px;color:var(--text);font-size:15px;border-radius:8px;
}
.nav__link:hover{color:var(--primary);background:var(--primary-soft)}
.nav__link.is-active{color:var(--primary);font-weight:600}
.nav__link.is-active::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;
  background:var(--primary);border-radius:2px;
}
.header__cta{display:flex;align-items:center;gap:12px;flex-shrink:0}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;border:1.5px solid transparent;
  transition:background .18s ease,color .18s ease,box-shadow .18s ease,transform .18s ease,border-color .18s ease;
  white-space:nowrap;
}
.btn--primary{background:var(--primary);color:#fff;box-shadow:var(--shadow-1)}
.btn--primary:hover{background:var(--primary-hover);color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-2)}
.btn--primary:active{background:var(--primary-active)}
.btn--ghost{background:#fff;border-color:var(--secondary);color:var(--secondary)}
.btn--ghost:hover{background:var(--secondary-soft);color:var(--secondary)}
.btn--sm{height:40px;padding:0 16px;font-size:14px}
.btn--block{width:100%}
.btn[disabled],.btn.is-disabled{opacity:.4;cursor:not-allowed}
.link-cta{display:inline-flex;align-items:center;gap:6px;font-weight:600;font-size:15px;color:var(--primary)}
.link-cta span{transition:transform .18s ease}
.link-cta:hover{text-decoration:underline}
.link-cta:hover span{transform:translateX(3px)}

.nav-toggle{
  display:none;width:44px;height:44px;border:1px solid var(--line);background:#fff;
  border-radius:10px;align-items:center;justify-content:center;flex-direction:column;gap:5px;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--ink);border-radius:2px}

/* 移动抽屉 */
.drawer{
  position:fixed;inset:0;background:rgba(20,22,28,.45);
  opacity:0;visibility:hidden;transition:opacity .2s ease;z-index:80;
}
.drawer.is-open{opacity:1;visibility:visible}
.drawer__panel{
  position:absolute;right:0;top:0;bottom:0;width:min(86vw,360px);background:#fff;
  padding:16px 20px 32px;overflow-y:auto;transform:translateX(100%);
  transition:transform .24s ease;display:flex;flex-direction:column;
}
.drawer.is-open .drawer__panel{transform:translateX(0)}
.drawer__head{display:flex;align-items:center;justify-content:space-between;margin-bottom:8px}
.drawer__close{width:44px;height:44px;border:1px solid var(--line);background:#fff;border-radius:10px;font-size:20px;color:var(--ink);line-height:1}
.drawer__list{display:flex;flex-direction:column;margin:8px 0 16px}
.drawer__list a{display:flex;align-items:center;height:52px;border-bottom:1px solid var(--line);color:var(--ink);font-size:16px}
.drawer__list a.is-active{color:var(--primary);font-weight:600}

/* 面包屑与页头 */
.page-head{padding:24px 0 8px}
.breadcrumb{font-size:13px;color:var(--muted);display:flex;flex-wrap:wrap;align-items:center;gap:6px}
.breadcrumb a{color:var(--muted)}
.breadcrumb a:hover{color:var(--primary);text-decoration:underline}
.breadcrumb .sep{color:#C6C0B6}
.breadcrumb .current{color:var(--primary)}

/* 文章布局 */
.article-layout{
  display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:32px;
  padding:24px 0 64px;align-items:start;
}
.article-main{min-width:0}
.article-head{
  background:var(--card);border:1px solid var(--card-line);border-radius:var(--radius-big);
  padding:32px;box-shadow:var(--shadow-1);margin-bottom:24px;
}
.article-head h1{
  font-size:clamp(26px,4.2vw,40px);line-height:1.28;font-weight:800;
  letter-spacing:-.01em;margin-bottom:16px;
}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px;font-size:13px;color:var(--muted)}
.article-meta .dot{color:#C6C0B6}
.chip{
  display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:var(--radius-pill);
  background:var(--secondary-soft);color:var(--secondary);font-size:13px;font-weight:600;
}
.chip--primary{background:var(--primary-soft);color:var(--primary-hover)}
.chip--gold{background:rgba(255,194,75,.18);color:#8A6414}

.article-card{
  background:var(--card);border:1px solid var(--card-line);border-radius:var(--radius-big);
  padding:32px;box-shadow:var(--shadow-1);
}
.article-cover{border-radius:var(--radius-card);overflow:hidden;margin-bottom:28px;box-shadow:var(--shadow-1)}
.article-cover img{width:100%;aspect-ratio:16/9;object-fit:cover}
.article-cover figcaption{font-size:13px;color:var(--muted);text-align:center;padding:10px 0 0}

/* 正文排版 */
.entry-content{font-size:17px;line-height:1.95;color:var(--text)}
.entry-content>*:first-child{margin-top:0}
.entry-content p{margin:0 0 1.2em}
.entry-content h2{
  position:relative;font-size:clamp(21px,2.6vw,28px);line-height:1.4;
  margin:44px 0 16px;padding-left:16px;font-weight:800;
}
.entry-content h2::before{
  content:"";position:absolute;left:0;top:.22em;bottom:.22em;width:4px;
  border-radius:2px;background:var(--primary);
}
.entry-content h3{font-size:19px;line-height:1.5;margin:30px 0 12px;font-weight:700}
.entry-content h4{font-size:17px;margin:24px 0 10px;font-weight:700}
.entry-content ul,.entry-content ol{margin:0 0 1.3em;padding-left:1.4em}
.entry-content li{margin-bottom:.5em}
.entry-content ul li::marker{color:var(--primary)}
.entry-content ol li::marker{color:var(--secondary);font-weight:600}
.entry-content blockquote{
  margin:24px 0;padding:20px;background:#FDF6F0;border-left:4px solid var(--primary);
  border-radius:0 var(--radius-card) var(--radius-card) 0;color:#4A4136;
}
.entry-content blockquote p:last-child{margin-bottom:0}
.entry-content img{border-radius:12px;margin:24px auto;box-shadow:var(--shadow-1)}
.entry-content a{color:var(--primary);text-decoration:underline;text-underline-offset:3px}
.entry-content a:hover{color:var(--primary-hover)}
.entry-content table{
  width:100%;border-collapse:separate;border-spacing:0;margin:24px 0;font-size:15px;
  border:1px solid var(--line);border-radius:var(--radius-card);overflow:hidden;
}
.entry-content thead th{background:#F4EFE9;color:var(--ink);font-weight:700;text-align:left}
.entry-content th,.entry-content td{padding:12px 14px;border-bottom:1px solid var(--line)}
.entry-content tbody tr:nth-child(even){background:#FBF8F5}
.entry-content tbody tr:last-child td{border-bottom:0}
.entry-content code{
  background:#F4EFE9;padding:2px 6px;border-radius:6px;font-size:14px;color:var(--secondary);
  font-variant-numeric:tabular-nums;
}

/* 文末区 */
.article-foot{margin-top:36px;padding-top:28px;border-top:1px solid var(--line)}
.tag-row{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:24px}
.share-row{display:flex;align-items:center;gap:12px;font-size:13px;color:var(--muted);margin-bottom:28px}
.share-btn{
  width:42px;height:42px;border-radius:var(--radius-pill);border:1px solid var(--line);
  background:#fff;display:flex;align-items:center;justify-content:center;color:var(--secondary);
  transition:border-color .18s ease,color .18s ease,transform .18s ease;
}
.share-btn:hover{border-color:var(--primary);color:var(--primary);transform:translateY(-1px)}
.share-btn svg{width:18px;height:18px}
.post-nav{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-bottom:28px}
.post-nav a{
  display:block;background:#fff;border:1px solid var(--card-line);border-radius:var(--radius-card);
  padding:18px;color:var(--ink);box-shadow:var(--shadow-1);transition:box-shadow .18s ease,transform .18s ease;
}
.post-nav a:hover{box-shadow:var(--shadow-2);transform:translateY(-2px);color:var(--primary)}
.post-nav small{display:block;font-size:12px;color:var(--muted);margin-bottom:6px}
.post-nav strong{display:block;font-size:15px;font-weight:600;line-height:1.5}
.post-nav .align-right{text-align:right}

.related-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}
.card{
  background:#fff;border:1px solid var(--card-line);border-radius:var(--radius-card);
  overflow:hidden;display:flex;flex-direction:column;box-shadow:var(--shadow-1);
  transition:box-shadow .18s ease,transform .18s ease;
}
.card:hover{box-shadow:var(--shadow-2);transform:translateY(-2px)}
.card__media{position:relative;overflow:hidden;aspect-ratio:4/3;background:var(--primary-soft)}
.card__media img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease}
.card:hover .card__media img{transform:scale(1.03)}
.card__badge{
  position:absolute;left:10px;top:10px;background:rgba(20,22,28,.78);color:#fff;
  font-size:12px;padding:3px 10px;border-radius:var(--radius-pill);
}
.card__body{padding:16px;display:flex;flex-direction:column;gap:8px;flex:1}
.card__body h3{font-size:16px;line-height:1.5;font-weight:700}
.card__body p{font-size:14px;color:var(--muted);margin:0;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card__foot{display:flex;align-items:center;justify-content:space-between;margin-top:auto;padding-top:8px}

/* 侧栏 */
.sidebar{display:flex;flex-direction:column;gap:20px;position:sticky;top:96px}
.side-card{background:#fff;border:1px solid var(--card-line);border-radius:var(--radius-card);padding:20px;box-shadow:var(--shadow-1)}
.side-card h3{font-size:16px;margin-bottom:14px;display:flex;align-items:center;gap:8px}
.side-card h3::before{content:"";width:4px;height:16px;border-radius:2px;background:var(--primary);display:inline-block}
.side-list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column}
.side-list li{border-bottom:1px solid var(--line)}
.side-list li:last-child{border-bottom:0}
.side-list a{display:block;padding:11px 0;font-size:14px;color:var(--text)}
.side-list a:hover{color:var(--primary)}
.side-cta{background:linear-gradient(155deg,#FFF3EA,#FFF9F4);border:1px solid rgba(244,98,27,.28);border-radius:var(--radius-card);padding:20px}
.side-cta strong{display:block;font-size:16px;color:var(--ink);margin-bottom:6px}
.side-cta p{font-size:13px;color:var(--muted);margin-bottom:14px}
.side-note{font-size:13px;color:var(--muted);background:#fff;border:1px dashed var(--line);border-radius:var(--radius-card);padding:16px}

/* 空态 */
.empty{padding:48px 20px;text-align:center;background:#fff;border:1px dashed var(--line);border-radius:var(--radius-card)}
.empty__icon{width:52px;height:52px;border-radius:var(--radius-pill);background:var(--primary-soft);color:var(--primary);display:flex;align-items:center;justify-content:center;margin:0 auto 16px;font-size:22px}
.empty h3{margin-bottom:8px}
.empty p{color:var(--muted);margin-bottom:20px}

/* 底部CTA */
.cta-band{padding:0 0 72px}
.cta-inner{
  background:#FFF6EF;border:1px solid rgba(244,98,27,.3);border-radius:var(--radius-big);
  padding:32px;display:grid;grid-template-columns:1.4fr 1fr;gap:28px;align-items:center;
  box-shadow:var(--shadow-1);
}
.cta-inner h2{font-size:clamp(21px,2.6vw,28px);margin-bottom:10px}
.cta-inner p{color:var(--muted);margin-bottom:20px;font-size:15px}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px}
.cta-figure{border-radius:var(--radius-card);overflow:hidden}
.cta-figure img{width:100%;aspect-ratio:16/10;object-fit:cover}

/* 页脚 */
.site-footer{background:var(--dark);color:#AFB5C1;padding:56px 0 0;font-size:14px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:32px;padding-bottom:36px}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff;font-weight:700;font-size:16px;margin-bottom:14px}
.site-footer h4{color:#fff;font-size:14px;font-weight:600;margin-bottom:14px}
.site-footer p{color:#9AA1AE;line-height:1.9;margin:0}
.footer-links{display:flex;flex-direction:column}
.footer-links a{color:#AFB5C1;line-height:2}
.footer-links a:hover{color:var(--gold)}
.footer-copy{
  border-top:1px solid rgba(255,255,255,.1);padding:18px 0 24px;
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px;
  font-size:13px;color:#8E95A3;font-variant-numeric:tabular-nums;
}

/* 返回顶部 */
.back-top{
  position:fixed;right:20px;bottom:24px;width:46px;height:46px;border-radius:var(--radius-pill);
  background:var(--primary);color:#fff;border:0;box-shadow:var(--shadow-2);
  display:flex;align-items:center;justify-content:center;opacity:0;visibility:hidden;
  transition:opacity .2s ease,transform .2s ease;z-index:70;font-size:18px;
}
.back-top.is-show{opacity:1;visibility:visible}
.back-top:hover{background:var(--primary-hover);transform:translateY(-2px)}

@media (max-width:1199px){
  .article-layout{grid-template-columns:minmax(0,1fr) 280px;gap:24px}
}
@media (max-width:991px){
  .nav__menu{display:none}
  .nav-toggle{display:flex}
  .article-layout{grid-template-columns:1fr}
  .sidebar{position:static;order:2}
  .related-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .cta-inner{grid-template-columns:1fr;padding:26px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:24px}
  .brand__text em{display:none}
}
@media (max-width:767px){
  .topbar__tip{display:none}
  .topbar__actions a:not(:first-child){display:none}
  .article-head,.article-card{padding:20px}
  .post-nav{grid-template-columns:1fr}
  .related-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
}
@media (max-width:519px){
  .header__inner{min-height:62px;gap:12px}
  .brand__text strong{font-size:15px}
  .header__cta .btn{display:none}
  .entry-content{font-size:16px}
  .article-head h1{font-size:26px}
  .cta-actions .btn{width:100%}
}

/* roulang page: category1 */
:root{
  --c-primary:#F4621B;
  --c-primary-hover:#D64F0C;
  --c-primary-active:#B8430A;
  --c-primary-soft:rgba(244,98,27,.08);
  --c-secondary:#12525C;
  --c-secondary-soft:rgba(18,82,92,.08);
  --c-gold:#FFC24B;
  --c-ink:#171A21;
  --c-text:#3E4453;
  --c-muted:#7C8394;
  --c-line:#ECE6DE;
  --c-border:#EFE9E1;
  --c-bg:#FAF7F3;
  --c-card:#FFFFFF;
  --c-dark:#14161C;
  --c-success:#1F9D6B;
  --c-warning:#E08B00;
  --c-error:#D2453B;
  --c-info:#2F7DF6;
  --r-card:14px;
  --r-large:20px;
  --r-btn:10px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(23,26,33,.06);
  --sh-2:0 8px 24px rgba(23,26,33,.08);
  --sh-3:0 14px 34px rgba(23,26,33,.14);
  --sp-4:4px; --sp-8:8px; --sp-12:12px; --sp-16:16px; --sp-24:24px;
  --sp-32:32px; --sp-48:48px; --sp-64:64px; --sp-96:96px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:-apple-system,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",sans-serif;
  font-size:17px;
  line-height:1.9;
  color:var(--c-text);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0;}
a{color:var(--c-primary);text-decoration:none;transition:color .18s ease,opacity .18s ease;}
a:hover{color:var(--c-primary-hover);}
button,input{font-family:inherit;font-size:inherit;}
h1,h2,h3,h4{margin:0;color:var(--c-ink);font-weight:800;letter-spacing:.2px;}
p{margin:0 0 1.2em;}
p:last-child{margin-bottom:0;}
ul{margin:0;padding:0;list-style:none;}
:focus-visible{outline:3px solid rgba(244,98,27,.30);outline-offset:2px;border-radius:6px;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px;}
.section{padding:56px 0;}
.section--tight{padding:48px 0;}
.section__head{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;flex-wrap:wrap;margin-bottom:32px;}
.section__title{font-size:clamp(21px,2.6vw,30px);line-height:1.35;position:relative;padding-left:16px;}
.section__title::before{content:"";position:absolute;left:0;top:.28em;width:4px;height:1em;border-radius:2px;background:var(--c-primary);}
.section__desc{margin-top:12px;color:var(--c-muted);font-size:15px;max-width:760px;}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;color:var(--c-secondary);background:var(--c-secondary-soft);border-radius:var(--r-pill);padding:6px 14px;}

/* 顶部信息条 */
.topbar{background:var(--c-dark);color:#B9BDC7;font-size:13px;line-height:1.7;}
.topbar__inner{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:38px;}
.topbar__domain{color:#E7E9EE;font-weight:600;letter-spacing:.3px;}
.topbar__tip{flex:1;text-align:center;color:#9BA1AD;}
.topbar__actions{display:flex;align-items:center;gap:18px;}
.topbar__actions a{color:#D7DAE1;font-size:13px;}
.topbar__actions a:hover{color:var(--c-gold);}

/* 主导航 */
.site-header{position:sticky;top:0;z-index:60;background:rgba(250,247,243,.96);backdrop-filter:blur(8px);border-bottom:1px solid transparent;transition:box-shadow .2s ease,border-color .2s ease;}
.site-header.is-scrolled{background:#fff;box-shadow:var(--sh-1);border-bottom-color:var(--c-line);}
.nav{display:flex;align-items:center;justify-content:space-between;gap:24px;min-height:70px;}
.brand{display:flex;align-items:center;gap:10px;color:var(--c-ink);font-weight:800;font-size:18px;letter-spacing:.3px;}
.brand:hover{color:var(--c-ink);}
.brand__mark{display:inline-flex;align-items:center;justify-content:center;width:36px;height:36px;border-radius:var(--r-btn);background:var(--c-primary);color:#fff;font-size:17px;font-weight:800;box-shadow:var(--sh-1);flex:none;}
.brand__text small{display:block;font-size:12px;font-weight:400;color:var(--c-muted);letter-spacing:0;}
.nav__menu{display:flex;align-items:center;gap:6px;}
.nav__link{position:relative;display:inline-flex;align-items:center;height:70px;padding:0 14px;font-size:15px;font-weight:600;color:var(--c-text);}
.nav__link::after{content:"";position:absolute;left:14px;right:14px;bottom:16px;height:2px;border-radius:2px;background:transparent;transition:background .18s ease;}
.nav__link:hover{color:var(--c-primary);}
.nav__link.is-active{color:var(--c-primary);}
.nav__link.is-active::after{background:var(--c-primary);}
.nav__right{display:flex;align-items:center;gap:12px;}
.nav__toggle{display:none;width:44px;height:44px;border-radius:var(--r-btn);border:1px solid var(--c-border);background:#fff;align-items:center;justify-content:center;cursor:pointer;}
.nav__toggle span{display:block;width:18px;height:2px;background:var(--c-ink);border-radius:2px;position:relative;}
.nav__toggle span::before,.nav__toggle span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:var(--c-ink);border-radius:2px;}
.nav__toggle span::before{top:-6px;}
.nav__toggle span::after{top:6px;}

.drawer{position:fixed;inset:0;z-index:120;background:var(--c-dark);color:#fff;display:flex;flex-direction:column;padding:20px;transform:translateX(100%);transition:transform .28s ease;visibility:hidden;}
.drawer.is-open{transform:translateX(0);visibility:visible;}
.drawer__head{display:flex;align-items:center;justify-content:space-between;margin-bottom:8px;}
.drawer__brand{display:flex;align-items:center;gap:10px;font-weight:700;font-size:17px;color:#fff;}
.drawer__close{width:44px;height:44px;border-radius:var(--r-btn);border:1px solid rgba(255,255,255,.24);background:transparent;color:#fff;font-size:20px;line-height:1;cursor:pointer;}
.drawer__list{margin-top:12px;border-top:1px solid rgba(255,255,255,.12);}
.drawer__list a{display:flex;align-items:center;justify-content:space-between;height:52px;padding:0 4px;color:#E7E9EE;font-size:16px;font-weight:600;border-bottom:1px solid rgba(255,255,255,.12);}
.drawer__list a.is-active{color:var(--c-gold);}
.drawer__foot{margin-top:auto;padding-top:24px;border-top:1px solid rgba(255,255,255,.12);font-size:13px;color:#9BA1AD;display:flex;flex-direction:column;gap:10px;}
.drawer__foot a{color:var(--c-gold);}

/* 按钮 */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:46px;padding:0 22px;border-radius:var(--r-btn);border:1.5px solid transparent;font-size:15px;font-weight:700;cursor:pointer;transition:all .18s ease;white-space:nowrap;}
.btn--primary{background:var(--c-primary);color:#fff;box-shadow:var(--sh-1);}
.btn--primary:hover{background:var(--c-primary-hover);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-3);}
.btn--primary:active{background:var(--c-primary-active);transform:translateY(0);}
.btn--ghost{background:#fff;color:var(--c-secondary);border-color:var(--c-secondary);}
.btn--ghost:hover{background:var(--c-secondary-soft);color:var(--c-secondary);}
.btn--sm{min-height:38px;padding:0 16px;font-size:14px;}
.btn--block{width:100%;}
.btn--disabled,.btn[disabled]{opacity:.4;cursor:not-allowed;transform:none;box-shadow:none;}
.link-cta{display:inline-flex;align-items:center;gap:6px;font-weight:600;font-size:15px;color:var(--c-primary);}
.link-cta .arw{transition:transform .18s ease;}
.link-cta:hover{text-decoration:underline;}
.link-cta:hover .arw{transform:translateX(3px);}

/* 面包屑 */
.crumb{font-size:13px;color:var(--c-muted);padding:18px 0 0;}
.crumb a{color:var(--c-muted);}
.crumb a:hover{color:var(--c-primary);text-decoration:underline;}
.crumb span.sep{margin:0 8px;color:#C9CFDA;}
.crumb .current{color:var(--c-primary);font-weight:600;}

/* 分类页头 */
.cat-hero{position:relative;overflow:hidden;background:var(--c-secondary);color:#fff;border-radius:var(--r-large);margin-top:18px;}
.cat-hero__bg{position:absolute;inset:0;background-image:url('/assets/images/backpic/back-1.png');background-size:cover;background-position:center;opacity:.30;}
.cat-hero__mask{position:absolute;inset:0;background:linear-gradient(120deg,rgba(18,82,92,.94) 0%,rgba(18,82,92,.72) 48%,rgba(20,22,28,.55) 100%);}
.cat-hero__inner{position:relative;padding:48px 32px 44px;display:grid;grid-template-columns:1.6fr 1fr;gap:32px;align-items:center;}
.cat-hero h1{color:#fff;font-size:clamp(26px,4.2vw,42px);line-height:1.28;}
.cat-hero__sub{margin-top:16px;font-size:17px;line-height:1.9;color:rgba(255,255,255,.88);max-width:620px;}
.cat-hero__actions{margin-top:24px;display:flex;gap:12px;flex-wrap:wrap;}
.cat-hero__card{background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.28);border-radius:var(--r-card);padding:20px;backdrop-filter:blur(2px);}
.cat-hero__card h3{color:#fff;font-size:16px;margin-bottom:12px;}
.cat-hero__card li{display:flex;gap:10px;font-size:14px;line-height:1.8;color:rgba(255,255,255,.9);padding:6px 0;border-bottom:1px dashed rgba(255,255,255,.2);}
.cat-hero__card li:last-child{border-bottom:0;}
.cat-hero__card b{color:var(--c-gold);font-weight:700;}

/* 图文交错行 */
.row-media{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center;padding:32px 0;}
.row-media--rev .row-media__media{order:2;}
.row-media__media{border-radius:var(--r-large);overflow:hidden;background:var(--c-primary-soft);box-shadow:var(--sh-2);aspect-ratio:16/10;}
.row-media__media img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease;}
.row-media:hover .row-media__media img{transform:scale(1.03);}
.row-media__body h3{font-size:20px;line-height:1.5;margin-bottom:14px;}
.row-media__body p{color:var(--c-text);}
.checks{margin-top:16px;display:grid;gap:10px;}
.checks li{position:relative;padding-left:26px;font-size:15px;color:var(--c-text);}
.checks li::before{content:"";position:absolute;left:6px;top:.62em;width:8px;height:8px;border-radius:50%;background:var(--c-primary);}
.divider{height:1px;background:var(--c-line);}

/* 对比表 */
.table-wrap{overflow-x:auto;border:1px solid var(--c-border);border-radius:var(--r-card);background:#fff;box-shadow:var(--sh-1);}
table.compare{width:100%;border-collapse:collapse;min-width:680px;font-size:15px;}
table.compare caption{text-align:left;padding:18px 20px 0;color:var(--c-muted);font-size:13px;}
table.compare th,table.compare td{padding:16px 20px;text-align:left;border-bottom:1px solid var(--c-line);}
table.compare thead th{background:#FBF8F4;color:var(--c-ink);font-weight:700;font-size:14px;white-space:nowrap;}
table.compare tbody tr:nth-child(even){background:#FCFAF7;}
table.compare tbody tr:last-child td{border-bottom:0;}
table.compare td:first-child{font-weight:700;color:var(--c-ink);}
.tag{display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:var(--r-pill);font-size:12px;font-weight:600;background:var(--c-primary-soft);color:var(--c-primary-active);}
.tag--teal{background:var(--c-secondary-soft);color:var(--c-secondary);}
.tag--gold{background:rgba(255,194,75,.20);color:#8A5A00;}

/* 三步流程条 */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;counter-reset:step;}
.step{position:relative;background:var(--c-card);border:1px solid var(--c-border);border-radius:var(--r-card);padding:28px 24px 24px;box-shadow:var(--sh-1);transition:transform .18s ease,box-shadow .18s ease;}
.step:hover{transform:translateY(-2px);box-shadow:var(--sh-2);}
.step__no{display:inline-flex;align-items:center;justify-content:center;width:40px;height:40px;border-radius:var(--r-pill);background:var(--c-primary);color:#fff;font-weight:800;font-size:17px;margin-bottom:16px;font-variant-numeric:tabular-nums;}
.step h3{font-size:18px;margin-bottom:10px;}
.step p{font-size:15px;color:var(--c-text);}
.step__meta{margin-top:16px;padding-top:14px;border-top:1px dashed var(--c-line);font-size:13px;color:var(--c-muted);}

/* 要点卡片墙（内页使用，版式不等高） */
.notes{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.note{background:var(--c-card);border:1px solid var(--c-border);border-radius:var(--r-card);padding:24px;box-shadow:var(--sh-1);transition:transform .18s ease,box-shadow .18s ease;}
.note:hover{transform:translateY(-2px);box-shadow:var(--sh-2);}
.note h3{font-size:17px;margin-bottom:10px;}
.note p{font-size:15px;}
.note--accent{background:#FFF6F0;border-color:#F7D9C8;}
.note--dark{background:var(--c-dark);border-color:var(--c-dark);}
.note--dark h3{color:#fff;}
.note--dark p{color:#B9BDC7;}
.note__ico{width:38px;height:38px;border-radius:var(--r-btn);display:flex;align-items:center;justify-content:center;background:var(--c-primary-soft);color:var(--c-primary);font-weight:800;margin-bottom:14px;}
.note--dark .note__ico{background:rgba(244,98,27,.18);color:var(--c-gold);}

/* 提示条 */
.alert{display:flex;gap:12px;align-items:flex-start;padding:16px 18px;border-radius:var(--r-card);font-size:15px;background:#fff;border:1px solid var(--c-border);box-shadow:var(--sh-1);}
.alert--warn{background:#FFF8EA;border-color:#F4DFB2;color:#7A5200;}
.alert--ok{background:#EFFAF5;border-color:#BFE7D6;color:#0F6B49;}
.alert__ico{font-weight:800;flex:none;}

/* FAQ */
.faq{max-width:900px;margin:0 auto;}
.faq__item{border:1px solid var(--c-border);border-radius:var(--r-card);background:#fff;margin-bottom:12px;overflow:hidden;box-shadow:var(--sh-1);}
.faq__q{width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;padding:18px 20px;background:transparent;border:0;text-align:left;font-size:17px;font-weight:600;color:var(--c-ink);cursor:pointer;transition:color .18s ease;}
.faq__q:hover{color:var(--c-primary);}
.faq__sign{flex:none;width:26px;height:26px;border-radius:50%;background:var(--c-primary-soft);color:var(--c-primary);font-size:16px;line-height:1;display:flex;align-items:center;justify-content:center;transition:transform .25s ease;}
.faq__item.is-open .faq__sign{transform:rotate(180deg);background:var(--c-primary);color:#fff;}
.faq__a{display:none;padding:0 20px 20px;font-size:15px;line-height:1.9;color:var(--c-text);background:#FCFAF7;}
.faq__item.is-open .faq__a{display:block;padding-top:16px;}

/* CTA */
.cta-band{background:#FFF6F0;border-top:1px solid #F7D9C8;border-bottom:1px solid #F7D9C8;}
.cta-band__inner{display:grid;grid-template-columns:1.4fr 1fr;gap:32px;align-items:center;padding:48px 0;}
.cta-band h2{font-size:clamp(21px,2.6vw,30px);line-height:1.35;}
.cta-band p{margin-top:12px;color:var(--c-text);font-size:16px;}
.cta-band__actions{margin-top:24px;display:flex;gap:12px;flex-wrap:wrap;}
.cta-band__art{border-radius:var(--r-large);overflow:hidden;aspect-ratio:16/10;background:var(--c-primary-soft);box-shadow:var(--sh-2);}
.cta-band__art img{width:100%;height:100%;object-fit:cover;}

/* 深色保障带 */
.dark-band{background:var(--c-dark);color:#C7CBD4;}
.dark-band__grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;padding:48px 0;}
.db-item{display:flex;gap:14px;align-items:flex-start;}
.db-item__ico{width:40px;height:40px;flex:none;border-radius:var(--r-btn);border:1.5px solid rgba(255,194,75,.55);color:var(--c-gold);display:flex;align-items:center;justify-content:center;font-weight:800;}
.db-item h3{color:#fff;font-size:16px;margin-bottom:6px;}
.db-item p{font-size:14px;line-height:1.8;color:#9BA1AD;}

/* 页脚 */
.site-footer{background:#101216;color:#9BA1AD;padding:56px 0 0;font-size:14px;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:32px;}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff;font-weight:800;font-size:17px;margin-bottom:16px;}
.site-footer h4{color:#fff;font-size:14px;font-weight:600;margin-bottom:16px;}
.footer-links{display:flex;flex-direction:column;gap:10px;}
.footer-links a{color:#9BA1AD;font-size:14px;}
.footer-links a:hover{color:var(--c-gold);}
.footer-copy{margin-top:40px;border-top:1px solid rgba(255,255,255,.10);padding:20px 0 28px;display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;font-size:13px;color:#7C8394;}

/* 返回顶部 */
.to-top{position:fixed;right:20px;bottom:24px;width:46px;height:46px;border-radius:var(--r-pill);border:1px solid var(--c-border);background:#fff;color:var(--c-primary);font-size:18px;box-shadow:var(--sh-2);cursor:pointer;display:flex;align-items:center;justify-content:center;opacity:0;visibility:hidden;transition:all .22s ease;z-index:80;}
.to-top.is-show{opacity:1;visibility:visible;}
.to-top:hover{background:var(--c-primary);color:#fff;border-color:var(--c-primary);transform:translateY(-2px);}

.img-fallback{background:var(--c-primary-soft);}

@media (max-width:1199px){
  .nav__link{padding:0 10px;}
}
@media (max-width:991px){
  .nav__menu{display:none;}
  .nav__toggle{display:flex;}
  .cat-hero__inner{grid-template-columns:1fr;padding:40px 24px 36px;}
  .row-media{grid-template-columns:1fr;gap:24px;}
  .row-media--rev .row-media__media{order:0;}
  .steps{grid-template-columns:1fr 1fr;}
  .notes{grid-template-columns:1fr 1fr;}
  .dark-band__grid{grid-template-columns:1fr 1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;}
  .cta-band__inner{grid-template-columns:1fr;padding:44px 0;}
}
@media (max-width:767px){
  body{font-size:16px;}
  .topbar__tip{display:none;}
  .steps{grid-template-columns:1fr;}
  .notes{grid-template-columns:1fr;}
  .section{padding:52px 0;}
}
@media (max-width:575px){
  .container{padding:0 20px;}
  .brand__text small{display:none;}
  .brand{font-size:16px;}
  .topbar__actions a:last-child{display:none;}
  .dark-band__grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;}
  .cat-hero__inner{padding:32px 20px 30px;}
  .section__head{margin-bottom:24px;}
  .to-top{right:14px;bottom:16px;}
}

/* roulang page: category2 */
:root{
  --brand:#F4621B;
  --brand-hover:#D64F0C;
  --brand-active:#B8430A;
  --teal:#12525C;
  --gold:#FFC24B;
  --ink:#171A21;
  --text:#3E4453;
  --muted:#7C8394;
  --line:#ECE6DE;
  --card-line:#EFE9E1;
  --bg:#FAF7F3;
  --card:#FFFFFF;
  --dark:#14161C;
  --ok:#1F9D6B;
  --warn:#E08B00;
  --err:#D2453B;
  --r-card:14px;
  --r-lg:20px;
  --r-btn:10px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(23,26,33,.06);
  --sh-2:0 8px 24px rgba(23,26,33,.08);
  --sh-3:0 14px 34px rgba(23,26,33,.14);
  --s1:4px; --s2:8px; --s3:12px; --s4:16px; --s5:24px; --s6:32px; --s7:48px; --s8:64px; --s9:96px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:-apple-system,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",sans-serif;
  font-size:16px;
  line-height:1.9;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border:0}
a{color:var(--brand);text-decoration:none;transition:color .18s ease}
a:hover{color:var(--brand-hover)}
button{font-family:inherit}
h1,h2,h3,h4{color:var(--ink);margin:0;line-height:1.35;font-weight:800}
h1{font-size:clamp(26px,4.2vw,42px);line-height:1.28;font-weight:800}
h2{font-size:clamp(21px,2.6vw,30px);line-height:1.35;font-weight:800}
h3{font-size:19px;line-height:1.5;font-weight:700}
p{margin:0 0 1.2em}
p:last-child{margin-bottom:0}
ul,ol{margin:0 0 1.2em;padding-left:1.2em}
li{margin-bottom:.5em}
:focus-visible{outline:3px solid rgba(244,98,27,.35);outline-offset:2px;border-radius:6px}
.container{max-width:1200px;margin:0 auto;padding:0 20px}
.section{padding:52px 0}
.section--alt{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section__head{display:flex;align-items:flex-end;justify-content:space-between;gap:var(--s5);margin-bottom:var(--s6);flex-wrap:wrap}
.section__title{position:relative;padding-left:16px}
.section__title::before{content:"";position:absolute;left:0;top:.18em;bottom:.18em;width:4px;border-radius:2px;background:var(--brand)}
.section__desc{max-width:640px;color:var(--muted);font-size:15px;margin-top:var(--s3);margin-bottom:0}

/* 顶部信息条 */
.topbar{background:var(--dark);color:#C9CDD6;font-size:13px;height:38px;display:flex;align-items:center}
.topbar .container{display:flex;align-items:center;justify-content:space-between;gap:var(--s4);width:100%}
.topbar__domain{letter-spacing:.02em;color:#9EA5B2}
.topbar__tip{color:#C9CDD6}
.topbar__acts{display:flex;align-items:center;gap:var(--s5)}
.topbar__acts a{color:#EDEFF3;font-size:13px;padding:6px 0}
.topbar__acts a:hover{color:var(--gold)}

/* 主导航 */
.site-header{position:sticky;top:0;z-index:60;background:rgba(250,247,243,.94);backdrop-filter:blur(8px);border-bottom:1px solid transparent;transition:box-shadow .2s ease,border-color .2s ease}
.site-header.is-scrolled{border-bottom-color:var(--line);box-shadow:var(--sh-1)}
.nav{display:flex;align-items:center;justify-content:space-between;gap:var(--s5);height:68px}
.brand{display:flex;align-items:center;gap:10px;color:var(--ink);font-weight:800;font-size:17px;letter-spacing:.01em}
.brand:hover{color:var(--ink)}
.brand__mark{width:34px;height:34px;flex:0 0 34px;border-radius:10px;background:var(--brand);color:#fff;display:flex;align-items:center;justify-content:center;font-size:17px;font-weight:800;box-shadow:var(--sh-1)}
.nav__menu{display:flex;align-items:center;gap:var(--s5);flex-wrap:wrap}
.nav__link{color:var(--text);font-size:15px;font-weight:600;padding:22px 0;position:relative}
.nav__link::after{content:"";position:absolute;left:0;right:0;bottom:14px;height:2px;border-radius:2px;background:var(--brand);transform:scaleX(0);transform-origin:center;transition:transform .2s ease}
.nav__link:hover{color:var(--brand)}
.nav__link:hover::after{transform:scaleX(1)}
.nav__link.is-active{color:var(--brand)}
.nav__link.is-active::after{transform:scaleX(1)}
.nav__actions{display:flex;align-items:center;gap:var(--s3)}
.nav__toggle{display:none;width:44px;height:44px;border:1px solid var(--card-line);border-radius:var(--r-btn);background:#fff;cursor:pointer;align-items:center;justify-content:center}
.nav__toggle span{display:block;width:18px;height:2px;background:var(--ink);border-radius:2px;position:relative}
.nav__toggle span::before,.nav__toggle span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:var(--ink);border-radius:2px}
.nav__toggle span::before{top:-6px}
.nav__toggle span::after{top:6px}

/* 按钮 */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:46px;padding:0 22px;border-radius:var(--r-btn);font-size:15px;font-weight:700;border:1.5px solid transparent;cursor:pointer;transition:transform .18s ease,background .18s ease,box-shadow .18s ease,color .18s ease;white-space:nowrap}
.btn--primary{background:var(--brand);color:#fff;box-shadow:var(--sh-1)}
.btn--primary:hover{background:var(--brand-hover);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-2)}
.btn--primary:active{background:var(--brand-active);transform:translateY(0)}
.btn--ghost{background:#fff;color:var(--teal);border-color:var(--teal)}
.btn--ghost:hover{background:rgba(18,82,92,.08);color:var(--teal);transform:translateY(-1px)}
.btn--sm{height:40px;padding:0 16px;font-size:14px}
.btn--block{width:100%}
.btn[disabled]{opacity:.4;cursor:not-allowed}
.link-cta{display:inline-flex;align-items:center;gap:6px;font-weight:700;color:var(--brand)}
.link-cta::after{content:"→";transition:transform .18s ease}
.link-cta:hover::after{transform:translateX(3px)}
.link-cta:hover{text-decoration:underline}

/* 徽章与标签 */
.badge{display:inline-flex;align-items:center;gap:6px;height:26px;padding:0 12px;border-radius:var(--r-pill);font-size:12.5px;font-weight:700;background:rgba(18,82,92,.08);color:var(--teal)}
.badge--brand{background:rgba(244,98,27,.1);color:var(--brand-active)}
.badge--gold{background:rgba(255,194,75,.24);color:#8A5A00}
.chip{display:inline-flex;align-items:center;height:30px;padding:0 14px;border-radius:var(--r-pill);border:1px solid var(--card-line);background:#fff;color:var(--text);font-size:13.5px;font-weight:600}
.chip--active{background:var(--brand);border-color:var(--brand);color:#fff}

/* 面包屑 */
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:#C6D3D6;margin-bottom:var(--s4)}
.crumb a{color:#E4EDEE;font-weight:600}
.crumb a:hover{color:var(--gold);text-decoration:underline}
.crumb__sep{opacity:.55}
.crumb__now{color:var(--gold);font-weight:700}

/* 分类页头 */
.cat-hero{position:relative;background:var(--teal);color:#DDEAEC;overflow:hidden}
.cat-hero::before{content:"";position:absolute;inset:0;background-image:url('/assets/images/backpic/back-2.webp');background-size:cover;background-position:center;opacity:.28}
.cat-hero::after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(18,82,92,.94) 0%,rgba(18,82,92,.82) 52%,rgba(18,82,92,.62) 100%)}
.cat-hero .container{position:relative;z-index:2;padding-top:var(--s6);padding-bottom:var(--s7)}
.cat-hero__grid{display:grid;grid-template-columns:minmax(0,1.55fr) minmax(0,1fr);gap:var(--s7);align-items:center}
.cat-hero h1{color:#fff;margin-bottom:var(--s4)}
.cat-hero__lead{font-size:17px;line-height:1.8;color:#D5E6E8;max-width:620px;margin-bottom:var(--s5)}
.cat-hero__acts{display:flex;flex-wrap:wrap;gap:var(--s3)}
.cat-hero__btn{display:inline-flex;align-items:center;justify-content:center;height:46px;padding:0 22px;border-radius:var(--r-btn);font-weight:700;font-size:15px;background:var(--brand);color:#fff;transition:transform .18s ease,background .18s ease}
.cat-hero__btn:hover{background:var(--brand-hover);color:#fff;transform:translateY(-1px)}
.cat-hero__btn--outline{background:transparent;border:1.5px solid rgba(255,255,255,.6);color:#fff}
.cat-hero__btn--outline:hover{background:rgba(255,255,255,.14);color:#fff}
.cat-hero__figure{margin:0;border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--sh-3);position:relative;aspect-ratio:16/10;background:rgba(255,255,255,.08)}
.cat-hero__figure img{width:100%;height:100%;object-fit:cover}
.cat-hero__stats{display:flex;flex-wrap:wrap;gap:var(--s5);margin-top:var(--s5);padding-top:var(--s5);border-top:1px solid rgba(255,255,255,.2)}
.cat-hero__stat b{display:block;font-size:22px;color:#fff;font-variant-numeric:tabular-nums;line-height:1.4}
.cat-hero__stat span{font-size:13px;color:#BED4D7}

/* 卡片墙（不等高） */
.wall{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:var(--s5);align-items:start}
.wall__card{background:var(--card);border:1px solid var(--card-line);border-radius:var(--r-card);box-shadow:var(--sh-1);overflow:hidden;transition:transform .2s ease,box-shadow .2s ease;display:flex;flex-direction:column}
.wall__card:hover{transform:translateY(-2px);box-shadow:var(--sh-2)}
.wall__card figure{margin:0;aspect-ratio:16/10;overflow:hidden;background:rgba(244,98,27,.08)}
.wall__card figure img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease}
.wall__card:hover figure img{transform:scale(1.03)}
.wall__body{padding:var(--s5);display:flex;flex-direction:column;gap:var(--s3);flex:1}
.wall__body h3{margin:0}
.wall__body p{margin:0;font-size:15px;color:var(--text)}
.wall__meta{display:flex;flex-wrap:wrap;gap:8px;margin-top:auto}
.wall__card--wide{grid-column:span 2}
.wall__card--tall .wall__body{padding-bottom:var(--s6)}

/* 要点清单 */
.points{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:var(--s5)}
.point{background:#fff;border:1px solid var(--card-line);border-radius:var(--r-card);padding:var(--s5);display:flex;gap:var(--s4);box-shadow:var(--sh-1)}
.point__ico{flex:0 0 40px;width:40px;height:40px;border-radius:12px;border:1.5px solid var(--brand);color:var(--brand);display:flex;align-items:center;justify-content:center;font-weight:800;font-size:16px}
.point h3{font-size:17px;margin-bottom:6px}
.point p{font-size:14.5px;color:var(--text);margin:0}

/* 时间轴 */
.timeline{position:relative;padding-left:34px;max-width:860px}
.timeline::before{content:"";position:absolute;left:11px;top:8px;bottom:8px;width:2px;background:var(--line)}
.tl-item{position:relative;padding-bottom:var(--s6)}
.tl-item:last-child{padding-bottom:0}
.tl-item::before{content:"";position:absolute;left:-29px;top:6px;width:14px;height:14px;border-radius:50%;background:#fff;border:3px solid var(--brand)}
.tl-item h3{font-size:17px;margin-bottom:6px}
.tl-item p{margin:0;font-size:15px}
.tl-step{display:inline-block;font-size:12.5px;font-weight:700;color:var(--brand-active);background:rgba(244,98,27,.1);border-radius:var(--r-pill);padding:2px 10px;margin-bottom:8px}

/* 深色保障条 */
.guard{background:var(--dark);color:#C9CDD6;padding:var(--s7) 0}
.guard__grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:var(--s5)}
.guard__item{display:flex;gap:var(--s3);align-items:flex-start}
.guard__ico{flex:0 0 38px;width:38px;height:38px;border-radius:12px;border:1.5px solid var(--gold);color:var(--gold);display:flex;align-items:center;justify-content:center;font-weight:800}
.guard__item b{display:block;color:#fff;font-size:15px;font-weight:700;margin-bottom:4px}
.guard__item span{font-size:13.5px;line-height:1.7;color:#A9B0BD}

/* FAQ */
.faq{max-width:900px}
.faq__item{border:1px solid var(--card-line);border-radius:var(--r-card);background:#fff;box-shadow:var(--sh-1);margin-bottom:var(--s3);overflow:hidden}
.faq__q{width:100%;background:none;border:0;text-align:left;padding:18px 20px;font-size:17px;font-weight:600;color:var(--ink);display:flex;align-items:center;justify-content:space-between;gap:var(--s4);cursor:pointer}
.faq__q:hover{color:var(--brand)}
.faq__ico{flex:0 0 26px;width:26px;height:26px;border-radius:50%;background:rgba(244,98,27,.12);color:var(--brand-active);display:flex;align-items:center;justify-content:center;font-weight:800;font-size:16px;transition:transform .25s ease}
.faq__item.is-open .faq__ico{transform:rotate(180deg)}
.faq__a{display:none;padding:0 20px 18px;font-size:15px;line-height:1.9;color:var(--text);border-top:1px solid var(--line);padding-top:16px}
.faq__item.is-open .faq__a{display:block}

/* CTA */
.cta-band{background:rgba(244,98,27,.06);border-top:1px solid rgba(244,98,27,.25);border-bottom:1px solid rgba(244,98,27,.25);padding:var(--s8) 0}
.cta-band__inner{display:grid;grid-template-columns:minmax(0,1.4fr) minmax(0,1fr);gap:var(--s7);align-items:center}
.cta-band h2{margin-bottom:var(--s3)}
.cta-band p{color:var(--text);font-size:15.5px;max-width:560px}
.cta-band__acts{display:flex;flex-wrap:wrap;gap:var(--s3);margin-top:var(--s5)}
.cta-band__figure{margin:0;border-radius:var(--r-lg);overflow:hidden;aspect-ratio:16/10;box-shadow:var(--sh-2);background:rgba(244,98,27,.08)}
.cta-band__figure img{width:100%;height:100%;object-fit:cover}

/* 表格 */
.table-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:var(--r-card);background:#fff;box-shadow:var(--sh-1)}
table.compare{width:100%;border-collapse:collapse;min-width:640px}
table.compare th,table.compare td{padding:14px 18px;text-align:left;font-size:14.5px;border-bottom:1px solid var(--line)}
table.compare th{background:#F5F1EC;color:var(--ink);font-weight:700}
table.compare tbody tr:nth-child(even){background:#FCFAF7}
table.compare tbody tr:last-child td{border-bottom:0}

/* 表单 */
.form-card{background:#fff;border:1px solid var(--card-line);border-radius:var(--r-card);padding:var(--s5);box-shadow:var(--sh-2);max-width:420px}
.form-card h3{margin-bottom:var(--s3)}
.form-field{margin-bottom:var(--s4)}
.form-field label{display:block;font-size:13.5px;font-weight:600;color:var(--ink);margin-bottom:6px}
.form-field input{width:100%;height:44px;border:1px solid var(--line);border-radius:var(--r-btn);padding:0 14px;font-size:15px;color:var(--ink);background:#fff;transition:border-color .18s ease,box-shadow .18s ease}
.form-field input:focus{outline:0;border-color:var(--brand);box-shadow:0 0 0 3px rgba(244,98,27,.18)}
.form-hint{font-size:13px;color:var(--muted);margin-top:6px}

/* 页脚 */
.site-footer{background:var(--dark);color:#A9B0BD;padding:var(--s8) 0 var(--s5);font-size:14px}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:var(--s6)}
.site-footer h4{color:#fff;font-size:14px;font-weight:600;margin-bottom:var(--s4)}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff;font-weight:800;font-size:16px;margin-bottom:var(--s4)}
.footer-links{display:flex;flex-direction:column;gap:10px}
.footer-links a{color:#C9CDD6;line-height:2}
.footer-links a:hover{color:var(--gold)}
.site-footer p{font-size:13.5px;line-height:1.85;color:#959CAA}
.footer-copy{margin-top:var(--s7);padding-top:var(--s5);border-top:1px solid rgba(255,255,255,.1);display:flex;justify-content:space-between;gap:var(--s4);flex-wrap:wrap;font-size:13px;color:#8B93A1}

/* 返回顶部 */
.to-top{position:fixed;right:20px;bottom:24px;width:46px;height:46px;border-radius:50%;background:#fff;border:1px solid var(--card-line);box-shadow:var(--sh-2);color:var(--teal);font-size:18px;font-weight:800;display:none;align-items:center;justify-content:center;cursor:pointer;z-index:70}
.to-top.is-show{display:flex}
.to-top:hover{background:var(--brand);color:#fff;border-color:var(--brand)}

/* 移动抽屉 */
.drawer{position:fixed;inset:0;background:#fff;z-index:90;transform:translateX(100%);transition:transform .25s ease;display:flex;flex-direction:column;padding:20px}
.drawer.is-open{transform:translateX(0)}
.drawer__head{display:flex;align-items:center;justify-content:space-between;margin-bottom:var(--s4)}
.drawer__close{width:44px;height:44px;border-radius:var(--r-btn);border:1px solid var(--card-line);background:#fff;font-size:20px;color:var(--ink);cursor:pointer}
.drawer__list{list-style:none;margin:0;padding:0}
.drawer__list li{border-bottom:1px solid var(--line)}
.drawer__list a{display:flex;align-items:center;height:52px;color:var(--ink);font-weight:600;font-size:16px}
.drawer__list a.is-active{color:var(--brand)}
.drawer__acts{margin-top:auto;display:flex;flex-direction:column;gap:var(--s3);padding-top:var(--s5)}

@media (max-width:1199px){
  .wall{grid-template-columns:repeat(2,minmax(0,1fr))}
  .wall__card--wide{grid-column:span 2}
  .guard__grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:var(--s6)}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr;gap:var(--s6)}
}
@media (max-width:991px){
  .nav__menu{display:none}
  .nav__toggle{display:flex}
  .nav{gap:var(--s3)}
  .cat-hero__grid{grid-template-columns:1fr;gap:var(--s6)}
  .cat-hero .container{padding-top:var(--s5);padding-bottom:var(--s7)}
  .cta-band__inner{grid-template-columns:1fr}
  .points{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:767px){
  .section{padding:48px 0}
  .wall{grid-template-columns:1fr}
  .wall__card--wide{grid-column:span 1}
  .topbar{height:auto;padding:8px 0}
  .topbar .container{flex-wrap:wrap;gap:var(--s2);justify-content:flex-start}
  .topbar__tip{display:none}
  .topbar__acts{gap:var(--s4)}
  .nav{height:62px}
  .brand{font-size:15px}
  .guard__grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .footer-copy{flex-direction:column;gap:6px}
  .cta-band{padding:var(--s7) 0}
}
@media (max-width:575px){
  .container{padding:0 16px}
  .nav__actions .btn{display:none}
  .cat-hero__stats{gap:var(--s5)}
  .timeline{padding-left:28px}
  .to-top{right:14px;bottom:16px}
}