/* roulang page: index */
:root{
  --brand:#FF6A2A;
  --brand-dark:#E85A1E;
  --brand-soft:rgba(255,106,42,.08);
  --cyan:#2ED3B7;
  --ink:#0E0F12;
  --ink-2:#17181C;
  --text:#17181C;
  --muted:#5A6068;
  --weak:#8A8F98;
  --bg:#F7F5F0;
  --bg-2:#EFEBE3;
  --line:#DDD8CE;
  --line-2:#E6E1D8;
  --radius-sm:12px;
  --radius:18px;
  --radius-lg:20px;
  --shadow-1:0 1px 2px rgba(16,18,22,.06);
  --shadow-2:0 18px 44px rgba(16,18,22,.12);
  --sp-8:8px;--sp-16:16px;--sp-24:24px;--sp-32:32px;--sp-48:48px;--sp-64:64px;--sp-96:96px;
  --font-cn:system-ui,-apple-system,"PingFang SC","Noto Sans SC","Microsoft YaHei",sans-serif;
  --font-num:"Inter","SFMono-Regular",Consolas,"Liberation Mono",monospace;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;background:var(--bg);color:var(--text);
  font-family:var(--font-cn);font-size:17px;line-height:1.85;
  font-weight:400;letter-spacing:0;overflow-x:hidden;
}
h1,h2,h3,h4{margin:0;color:var(--ink-2);font-weight:800;letter-spacing:-.02em;}
p{margin:0 0 1em;}
a{color:var(--ink-2);text-decoration:none;transition:color .2s ease,border-color .2s ease;}
a:hover{color:var(--brand);}
img{max-width:100%;height:auto;display:block;}
button,input,select,textarea{font-family:inherit;font-size:inherit;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px;}
ul{margin:0;padding:0;list-style:none;}
[hidden]{display:none !important;}

.grid-container{max-width:1280px;padding-left:24px;padding-right:24px;margin:0 auto;}
.site-main{display:block;}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:120;background:var(--bg);
  border-bottom:1px solid var(--line);transition:box-shadow .2s ease;
}
.site-header.is-stuck{box-shadow:0 6px 20px rgba(16,18,22,.08);}
.brand-bar{display:flex;align-items:center;gap:24px;height:64px;}
.site-header.is-stuck .brand-bar{height:56px;}
.brand-logo{display:flex;align-items:center;gap:10px;flex:0 0 auto;font-weight:900;font-size:19px;letter-spacing:-.02em;color:var(--ink);}
.brand-logo:hover{color:var(--ink);}
.brand-mark{
  width:32px;height:32px;border-radius:10px;flex:0 0 auto;
  background:linear-gradient(140deg,var(--brand),#FF9257);
  color:#fff;display:flex;align-items:center;justify-content:center;font-size:15px;font-weight:900;
  box-shadow:0 6px 16px rgba(255,106,42,.32);
}
.brand-text em{font-style:normal;color:var(--brand);}
.search-form{flex:1 1 auto;max-width:420px;position:relative;display:flex;align-items:center;}
.search-form input{
  width:100%;height:42px;border:1px solid var(--line);border-radius:var(--radius-sm);
  background:#fff;padding:0 44px 0 16px;color:var(--text);font-size:15px;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.search-form input::placeholder{color:var(--weak);}
.search-form input:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(255,106,42,.18);}
.search-form button{
  position:absolute;right:6px;top:6px;width:30px;height:30px;border:0;border-radius:9px;
  background:transparent;color:var(--muted);cursor:pointer;display:flex;align-items:center;justify-content:center;
}
.search-form button:hover{background:var(--brand-soft);color:var(--brand);}
.hot-chips{display:flex;gap:8px;align-items:center;flex:0 1 auto;overflow:hidden;}
.chip{
  display:inline-flex;align-items:center;gap:6px;height:30px;padding:0 12px;border-radius:999px;
  background:#fff;border:1px solid var(--line);font-size:13px;color:var(--muted);white-space:nowrap;
  transition:all .2s ease;
}
.chip:hover{border-color:var(--brand);color:var(--brand);background:var(--brand-soft);}
.chip i{font-size:11px;color:var(--cyan);}
.brand-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 22px;border-radius:var(--radius-sm);
  font-weight:700;font-size:16px;border:1.5px solid transparent;cursor:pointer;
  transition:transform .2s ease,background-color .2s ease,box-shadow .2s ease,border-color .2s ease,color .2s ease;
  white-space:nowrap;
}
.btn i{transition:transform .2s ease;}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 6px 18px rgba(255,106,42,.24);}
.btn-primary:hover{background:var(--brand-dark);color:#fff;transform:translateY(-2px);box-shadow:0 10px 24px rgba(255,106,42,.28);}
.btn-primary:hover i{transform:translateX(4px);}
.btn-primary:active{transform:translateY(1px);}
.btn-ghost{background:transparent;border-color:var(--ink);color:var(--ink);}
.btn-ghost:hover{background:var(--brand-soft);border-color:var(--brand);color:var(--brand);transform:translateY(-2px);}
.btn-sm{height:38px;padding:0 16px;font-size:14px;border-radius:10px;}
.btn-block{width:100%;}
.channel-bar{border-top:1px solid var(--line-2);overflow-x:auto;scrollbar-width:none;}
.channel-bar::-webkit-scrollbar{display:none;}
.channel-inner{display:flex;align-items:center;gap:28px;height:44px;min-width:max-content;}
.channel-link{
  position:relative;font-size:15px;font-weight:600;color:var(--muted);padding:0 2px;
  height:44px;display:inline-flex;align-items:center;white-space:nowrap;
}
.channel-link::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:3px;border-radius:3px 3px 0 0;
  background:var(--brand);transform:scaleX(0);transform-origin:center;transition:transform .2s ease;
}
.channel-link:hover{color:var(--ink);}
.channel-link:hover::after{transform:scaleX(1);}
.channel-link.is-active{color:var(--brand);}
.channel-link.is-active::after{transform:scaleX(1);}
.nav-toggle{
  display:none;width:42px;height:42px;border:1px solid var(--line);background:#fff;border-radius:var(--radius-sm);
  color:var(--ink);cursor:pointer;align-items:center;justify-content:center;font-size:17px;
}
.nav-toggle:hover{border-color:var(--brand);color:var(--brand);}

/* 抽屉 */
.drawer-mask{position:fixed;inset:0;background:rgba(14,15,18,.45);opacity:0;pointer-events:none;transition:opacity .25s ease;z-index:130;}
.drawer-mask.is-open{opacity:1;pointer-events:auto;}
.drawer{
  position:fixed;top:0;right:0;height:100%;width:320px;max-width:88vw;background:var(--bg);
  z-index:140;transform:translateX(102%);transition:transform .28s ease;
  display:flex;flex-direction:column;padding:20px 20px 28px;overflow-y:auto;border-left:1px solid var(--line);
}
.drawer.is-open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:20px;}
.drawer-close{width:38px;height:38px;border-radius:10px;border:1px solid var(--line);background:#fff;cursor:pointer;color:var(--ink);}
.drawer-close:hover{border-color:var(--brand);color:var(--brand);}
.drawer-nav{display:flex;flex-direction:column;gap:4px;margin-bottom:22px;}
.drawer-nav a{padding:12px 14px;border-radius:var(--radius-sm);font-weight:600;color:var(--ink-2);}
.drawer-nav a:hover,.drawer-nav a.is-active{background:var(--brand-soft);color:var(--brand);}
.drawer-label{font-size:13px;color:var(--weak);letter-spacing:.08em;margin:0 0 10px;}
.drawer-chips{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:24px;}

/* ============ Hero ============ */
.hero{position:relative;overflow:hidden;padding:72px 0 64px;background:var(--bg);}
.hero-bg{
  position:absolute;inset:0;background-image:url('/assets/images/backpic/back-1.png');
  background-size:cover;background-position:center;opacity:.10;pointer-events:none;
}
.hero-inner{position:relative;display:grid;grid-template-columns:minmax(0,1.05fr) minmax(0,.95fr);gap:56px;align-items:center;}
.hero-copy .eyebrow{margin-bottom:18px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;height:30px;padding:0 14px;border-radius:999px;
  background:#fff;border:1px solid var(--line);font-size:13px;font-weight:600;color:var(--muted);
}
.eyebrow .dot{width:7px;height:7px;border-radius:50%;background:var(--cyan);box-shadow:0 0 0 4px rgba(46,211,183,.18);}
.hero h1{font-size:clamp(34px,5vw,60px);line-height:1.12;letter-spacing:-.02em;margin-bottom:20px;font-weight:900;}
.hero h1 .hl{color:var(--brand);}
.hero-lead{font-size:18px;line-height:1.85;color:var(--muted);max-width:600px;margin-bottom:28px;}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:34px;}
.stat-bar{
  display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:1px;background:var(--line);
  border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;
}
.stat-item{background:#fff;padding:16px 18px;}
.stat-item .k{font-size:13px;color:var(--weak);margin-bottom:2px;}
.stat-item .v{font-family:var(--font-num);font-size:20px;font-weight:800;color:var(--ink-2);}
.stat-item .v small{font-size:12px;font-weight:600;color:var(--muted);margin-left:2px;}
.hero-art{position:relative;}
.hero-art .art-frame{
  position:relative;border-radius:24px;overflow:hidden;border:1px solid var(--line);background:#fff;
  box-shadow:var(--shadow-2);animation:floaty 7s ease-in-out infinite;
}
.hero-art .art-frame img{width:100%;aspect-ratio:16/11;object-fit:cover;}
.hero-art .art-tag{
  position:absolute;left:18px;bottom:18px;background:rgba(14,15,18,.86);color:#F7F5F0;
  border-radius:12px;padding:10px 14px;font-size:13px;line-height:1.5;backdrop-filter:blur(2px);
}
.hero-art .art-tag strong{display:block;font-size:15px;color:#fff;font-family:var(--font-num);}
.hero-art::after{
  content:"";position:absolute;right:-36px;top:-36px;width:180px;height:180px;border-radius:50%;
  background:radial-gradient(circle,rgba(255,106,42,.20),transparent 68%);pointer-events:none;
}
@keyframes floaty{0%,100%{transform:translateY(0);}50%{transform:translateY(-10px);}}

/* ============ 通用板块 ============ */
.section{padding:96px 0;}
.section.tight{padding:72px 0;}
.section.alt{background:var(--bg-2);}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:32px;margin-bottom:44px;}
.section-head .lead{max-width:660px;}
.section-title{font-size:clamp(26px,3.2vw,40px);line-height:1.18;letter-spacing:-.02em;margin-bottom:12px;font-weight:900;}
.section-sub{font-size:17px;color:var(--muted);line-height:1.8;margin:0;max-width:660px;}
.section-link{font-weight:700;font-size:15px;color:var(--brand);display:inline-flex;align-items:center;gap:6px;white-space:nowrap;}
.section-link:hover i{transform:translateX(4px);}
.section-link i{transition:transform .2s ease;}

.card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow-1);
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;overflow:hidden;
}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:rgba(255,106,42,.35);}
.card-body{padding:22px 24px 24px;}
.badge{
  display:inline-flex;align-items:center;gap:6px;height:26px;padding:0 10px;border-radius:8px;
  background:var(--brand-soft);color:var(--brand);font-size:12px;font-weight:700;
}
.badge.cyan{background:rgba(46,211,183,.14);color:#1B9C86;}
.meta{font-size:13px;color:var(--weak);display:flex;align-items:center;gap:12px;flex-wrap:wrap;}

/* ============ 功能截图轮播 ============ */
.shots{position:relative;}
.shot-track{
  display:flex;gap:20px;overflow-x:auto;scroll-snap-type:x mandatory;padding-bottom:8px;
  scrollbar-width:none;
}
.shot-track::-webkit-scrollbar{display:none;}
.shot-item{
  flex:0 0 calc((100% - 40px)/3);scroll-snap-align:start;background:#fff;border:1px solid var(--line);
  border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow-1);
}
.shot-item img{width:100%;aspect-ratio:16/10;object-fit:cover;}
.shot-cap{padding:16px 18px 20px;}
.shot-cap h3{font-size:17px;margin-bottom:6px;font-weight:800;}
.shot-cap p{font-size:14px;color:var(--muted);line-height:1.7;margin:0;}
.shot-nav{display:flex;align-items:center;justify-content:space-between;margin-top:24px;gap:16px;}
.shot-arrows{display:flex;gap:10px;}
.shot-arrow{
  width:44px;height:44px;border-radius:50%;border:1px solid var(--line);background:#fff;color:var(--ink);
  display:flex;align-items:center;justify-content:center;cursor:pointer;transition:all .2s ease;
}
.shot-arrow:hover{border-color:var(--brand);color:var(--brand);transform:translateY(-2px);}
.shot-dots{display:flex;gap:8px;}
.shot-dot{width:8px;height:8px;border-radius:50%;background:var(--line);border:0;padding:0;cursor:pointer;transition:all .2s ease;}
.shot-dot.is-active{background:var(--brand);width:22px;border-radius:999px;}

/* ============ 系统要求 ============ */
.spec-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px;}
.spec-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:24px;box-shadow:var(--shadow-1);transition:all .25s ease;}
.spec-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:rgba(255,106,42,.35);}
.spec-icon{
  width:44px;height:44px;border-radius:12px;background:var(--bg-2);color:var(--ink);
  display:flex;align-items:center;justify-content:center;font-size:18px;margin-bottom:16px;
}
.spec-card .k{font-size:14px;color:var(--muted);margin-bottom:6px;}
.spec-card .v{font-family:var(--font-num);font-size:24px;font-weight:800;color:var(--ink-2);line-height:1.3;}
.spec-card .f{font-size:13px;color:var(--weak);margin-top:10px;line-height:1.7;}
.update-badge{
  display:inline-flex;align-items:center;gap:8px;height:32px;padding:0 14px;border-radius:999px;
  background:#fff;border:1px solid var(--line);font-size:13px;color:var(--muted);font-weight:600;
}
.update-badge i{color:var(--cyan);}

/* ============ 评价墙 ============ */
.review-wrap{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:32px;align-items:start;}
.review-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;align-items:start;}
.review-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:22px;box-shadow:var(--shadow-1);transition:all .25s ease;}
.review-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:rgba(255,106,42,.35);}
.review-card:nth-child(2){margin-top:24px;}
.review-head{display:flex;align-items:center;gap:12px;margin-bottom:12px;}
.avatar{
  width:40px;height:40px;border-radius:50%;background:var(--bg-2);color:var(--ink-2);
  display:flex;align-items:center;justify-content:center;font-weight:800;font-size:15px;flex:0 0 auto;
}
.review-name{font-weight:700;font-size:15px;}
.stars{color:var(--brand);font-size:12px;letter-spacing:2px;}
.review-text{font-size:15px;line-height:1.8;color:var(--muted);margin:0;}
.review-panel{background:var(--ink);color:#F7F5F0;border-radius:var(--radius-lg);padding:26px;position:sticky;top:120px;}
.review-panel .big{font-family:var(--font-num);font-size:44px;font-weight:900;color:#fff;line-height:1;}
.review-panel .desc{font-size:14px;color:rgba(247,245,240,.72);margin:10px 0 20px;line-height:1.7;}
.bar-row{margin-bottom:14px;}
.bar-row .row-top{display:flex;justify-content:space-between;font-size:13px;color:rgba(247,245,240,.8);margin-bottom:6px;}
.bar{height:6px;border-radius:999px;background:rgba(255,255,255,.14);overflow:hidden;}
.bar span{display:block;height:100%;border-radius:999px;background:var(--cyan);}
.bar span.orange{background:var(--brand);}

/* ============ 下载面板 ============ */
.download-panel{
  background:var(--ink);color:#F7F5F0;border-radius:24px;padding:56px;
  background-image:url('/assets/images/backpic/back-3.png');background-size:cover;background-position:center;
  position:relative;overflow:hidden;
}
.download-panel::before{content:"";position:absolute;inset:0;background:rgba(14,15,18,.90);}
.download-inner{position:relative;display:grid;grid-template-columns:minmax(0,1.4fr) minmax(0,.7fr);gap:48px;align-items:center;}
.download-panel h2{color:#fff;font-size:clamp(26px,3vw,38px);margin-bottom:14px;line-height:1.2;}
.download-panel p{color:rgba(247,245,240,.72);font-size:16px;line-height:1.8;max-width:620px;}
.dl-buttons{display:flex;flex-wrap:wrap;gap:14px;margin:26px 0 20px;}
.btn-outline-light{background:transparent;border:1.5px solid rgba(247,245,240,.5);color:#F7F5F0;}
.btn-outline-light:hover{border-color:#fff;color:#fff;background:rgba(255,255,255,.08);transform:translateY(-2px);}
.dl-note{font-size:13px;color:rgba(247,245,240,.55);line-height:1.8;}
.qr-box{background:#fff;border-radius:var(--radius);padding:18px;text-align:center;color:var(--ink-2);}
.qr-box .qr{
  width:100%;aspect-ratio:1/1;border-radius:12px;background:
   repeating-linear-gradient(45deg,#0E0F12 0 6px,#fff 6px 12px),
   #fff;
  border:1px solid var(--line);opacity:.92;
}
.qr-box .qr-cap{font-size:13px;color:var(--muted);margin-top:12px;}
.dl-version{display:flex;gap:28px;flex-wrap:wrap;font-size:13px;color:rgba(247,245,240,.6);font-family:var(--font-num);}

/* ============ 最新信息 ============ */
.news-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px;}
.news-card{display:flex;gap:0;flex-direction:column;background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow-1);transition:all .25s ease;}
.news-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:rgba(255,106,42,.35);}
.news-card .news-body{padding:22px 24px 24px;display:flex;flex-direction:column;gap:10px;height:100%;}
.news-card h3{font-size:19px;line-height:1.5;font-weight:800;}
.news-card h3 a{color:var(--ink-2);}
.news-card h3 a:hover{color:var(--brand);}
.news-card .excerpt{font-size:15px;color:var(--muted);line-height:1.75;margin:0;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:12px;}
.news-more{font-size:14px;font-weight:700;color:var(--brand);display:inline-flex;align-items:center;gap:6px;}
.news-more i{transition:transform .2s ease;}
.news-card:hover .news-more i{transform:translateX(4px);}
.empty-state{
  grid-column:1/-1;background:#fff;border:1px dashed var(--line);border-radius:var(--radius);
  padding:48px 24px;text-align:center;color:var(--muted);
}
.empty-state i{font-size:26px;color:var(--brand);display:block;margin-bottom:12px;}
.empty-state strong{display:block;font-size:17px;color:var(--ink-2);margin-bottom:6px;}

/* ============ 分类入口 ============ */
.cat-grid{display:grid;grid-template-columns:repeat(12,minmax(0,1fr));gap:20px;}
.cat-card{
  border-radius:var(--radius-lg);overflow:hidden;position:relative;border:1px solid var(--line);
  background:#fff;box-shadow:var(--shadow-1);transition:all .25s ease;display:flex;flex-direction:column;
}
.cat-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:rgba(255,106,42,.35);}
.cat-card.lg{grid-column:span 6;}
.cat-card.sm{grid-column:span 3;}
.cat-card img{width:100%;aspect-ratio:16/9;object-fit:cover;}
.cat-body{padding:22px 24px 26px;}
.cat-body h3{font-size:20px;margin-bottom:10px;font-weight:800;}
.cat-body p{font-size:15px;color:var(--muted);line-height:1.75;margin:0 0 16px;}
.tag-cloud{display:flex;flex-wrap:wrap;gap:10px;margin-top:28px;}
.tag-cloud .chip{height:34px;font-size:14px;}

/* ============ FAQ ============ */
.faq-layout{display:grid;grid-template-columns:minmax(0,.8fr) minmax(0,1.6fr);gap:56px;align-items:start;}
.faq-list{border-top:1px solid var(--line);}
.faq-item{border-bottom:1px solid var(--line);}
.faq-item summary{
  list-style:none;cursor:pointer;padding:22px 44px 22px 0;position:relative;
  font-size:17px;font-weight:700;color:var(--ink-2);line-height:1.6;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{
  content:"\f054";font-family:"Font Awesome 6 Free";font-weight:900;font-size:13px;color:var(--brand);
  position:absolute;right:8px;top:28px;transition:transform .25s ease;
}
.faq-item[open] summary::after{transform:rotate(90deg);}
.faq-item summary:hover{color:var(--brand);}
.faq-answer{padding:0 40px 24px 0;font-size:15px;line-height:1.85;color:var(--muted);}
.faq-answer p{margin:0 0 10px;}

/* ============ 底部 CTA ============ */
.cta-band{
  background:var(--bg-2);border:1px solid var(--line);border-radius:24px;padding:52px;
  display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;
}
.cta-band h2{font-size:clamp(24px,3vw,34px);margin-bottom:10px;line-height:1.2;}
.cta-band p{color:var(--muted);margin:0;font-size:16px;max-width:620px;}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;}

/* ============ 页脚 ============ */
.site-footer{background:var(--ink);color:rgba(247,245,240,.78);padding:64px 0 28px;margin-top:0;}
.footer-grid{display:grid;grid-template-columns:minmax(0,1.6fr) repeat(3,minmax(0,1fr));gap:40px;padding-bottom:40px;border-bottom:1px solid rgba(247,245,240,.14);}
.footer-brand .brand-logo{color:#fff;margin-bottom:16px;}
.footer-brand .brand-logo:hover{color:#fff;}
.footer-brand p{font-size:14px;line-height:1.85;color:rgba(247,245,240,.62);max-width:340px;}
.footer-col h4{color:#fff;font-size:15px;margin-bottom:16px;font-weight:800;}
.footer-col li{margin-bottom:10px;}
.footer-col a{font-size:14px;color:rgba(247,245,240,.66);}
.footer-col a:hover{color:var(--brand);}
.footer-bottom{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;padding-top:24px;font-size:13px;color:rgba(247,245,240,.5);}
.footer-bottom .num{font-family:var(--font-num);}

/* ============ 响应式 ============ */
@media screen and (max-width:1024px){
  .hero{padding:56px 0 48px;}
  .hero-inner{grid-template-columns:1fr;gap:40px;}
  .section{padding:72px 0;}
  .spec-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .review-wrap{grid-template-columns:1fr;}
  .review-panel{position:static;}
  .review-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .review-card:nth-child(2){margin-top:0;}
  .shot-item{flex:0 0 calc((100% - 20px)/2);}
  .cat-card.lg{grid-column:span 12;}
  .cat-card.sm{grid-column:span 6;}
  .faq-layout{grid-template-columns:1fr;gap:32px;}
  .download-panel{padding:40px;}
  .download-inner{grid-template-columns:1fr;gap:32px;}
  .cta-band{padding:40px;}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:32px;}
  .search-form{display:none;}
  .hot-chips{display:none;}
  .nav-toggle{display:inline-flex;}
  .brand-actions .btn-ghost{display:none;}
}
@media screen and (max-width:768px){
  .grid-container{padding-left:18px;padding-right:18px;}
  .news-list{grid-template-columns:1fr;}
  .review-grid{grid-template-columns:1fr;}
  .stat-bar{grid-template-columns:repeat(2,minmax(0,1fr));}
  .section-head{flex-direction:column;align-items:flex-start;gap:16px;}
  .brand-logo{font-size:17px;}
}
@media screen and (max-width:520px){
  body{font-size:16px;}
  .hero h1{font-size:32px;}
  .hero-lead{font-size:16px;}
  .spec-grid{grid-template-columns:1fr;}
  .shot-item{flex:0 0 100%;}
  .cat-card.sm{grid-column:span 12;}
  .download-panel{padding:28px 20px;}
  .cta-band{padding:28px 20px;}
  .footer-grid{grid-template-columns:1fr;}
  .btn{height:46px;padding:0 18px;font-size:15px;}
  .brand-actions .btn-primary{padding:0 14px;font-size:14px;height:42px;}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;}
  .hero-art .art-frame{animation:none;}
}

/* roulang page: article */
:root{
  --ink:#0E0F12;
  --ink-2:#17181C;
  --orange:#FF6A2A;
  --orange-dark:#E85A1E;
  --orange-soft:rgba(255,106,42,.10);
  --cyan:#2ED3B7;
  --bg:#F7F5F0;
  --bg-2:#EFEBE3;
  --white:#FFFFFF;
  --border:#DDD8CE;
  --line:#E6E1D8;
  --text:#17181C;
  --text-2:#5A6068;
  --text-3:#8A8F98;
  --danger:#D94A3A;
  --radius-sm:12px;
  --radius:18px;
  --radius-lg:20px;
  --shadow:0 1px 2px rgba(16,18,22,.06);
  --shadow-hover:0 18px 44px rgba(16,18,22,.12);
  --ease:cubic-bezier(.2,.7,.3,1);
  --font:system-ui,-apple-system,"PingFang SC","Noto Sans SC","Microsoft YaHei",sans-serif;
  --mono:"Inter",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  --sp-1:8px;--sp-2:16px;--sp-3:24px;--sp-4:32px;--sp-5:48px;--sp-6:64px;--sp-7:96px;
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font);
  font-size:17px;
  line-height:1.75;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block;}
a{color:inherit;text-decoration:none;transition:color .2s var(--ease),background-color .2s var(--ease),border-color .2s var(--ease);}
a:hover{color:var(--orange);}
button{font-family:inherit;}
h1,h2,h3,h4{margin:0;font-weight:800;letter-spacing:-.02em;color:var(--ink-2);}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--orange);outline-offset:2px;border-radius:4px;}

.grid-container{max-width:1280px;margin:0 auto;padding-left:24px;padding-right:24px;}
.grid-container.full{max-width:100%;padding-left:0;padding-right:0;}

/* ============ 顶栏与导航 ============ */
.site-header{
  position:sticky;top:0;z-index:80;
  background:var(--bg);
  border-bottom:1px solid var(--line);
  transition:box-shadow .2s var(--ease),background-color .2s var(--ease);
}
.site-header.is-stuck{box-shadow:0 8px 24px rgba(16,18,22,.08);background:var(--bg);}
.brand-bar{
  display:flex;align-items:center;gap:20px;
  height:64px;
  transition:height .2s var(--ease);
}
.site-header.is-stuck .brand-bar{height:56px;}
.brand-logo{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.brand-mark{
  width:34px;height:34px;border-radius:10px;
  background:var(--ink);color:var(--orange);
  display:flex;align-items:center;justify-content:center;
  font-weight:900;font-size:18px;letter-spacing:0;
}
.brand-text{font-size:18px;font-weight:900;color:var(--ink-2);letter-spacing:-.01em;white-space:nowrap;}
.brand-text em{font-style:normal;color:var(--orange);}
.search-form{
  flex:1 1 auto;max-width:420px;position:relative;display:flex;align-items:center;
}
.search-form input[type="search"]{
  width:100%;height:42px;border-radius:12px;
  border:1px solid var(--border);background:var(--white);
  padding:0 46px 0 16px;font-size:14px;color:var(--text);
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
  margin:0;
}
.search-form input[type="search"]::placeholder{color:var(--text-3);}
.search-form input[type="search"]:focus{
  outline:none;border-color:var(--orange);box-shadow:0 0 0 3px rgba(255,106,42,.18);
}
.search-form button{
  position:absolute;right:4px;top:4px;width:34px;height:34px;border:0;border-radius:9px;
  background:var(--ink);color:var(--white);cursor:pointer;display:flex;align-items:center;justify-content:center;
  transition:background-color .2s var(--ease),transform .2s var(--ease);
}
.search-form button:hover{background:var(--orange);}
.hot-chips{display:flex;align-items:center;gap:8px;flex:0 0 auto;}
.chip{
  display:inline-flex;align-items:center;gap:6px;
  height:32px;padding:0 12px;border-radius:999px;
  background:var(--bg-2);color:var(--text-2);
  font-size:13px;font-weight:600;white-space:nowrap;
  transition:background-color .2s var(--ease),color .2s var(--ease),transform .2s var(--ease);
}
.chip i{color:var(--orange);font-size:12px;}
.chip:hover{background:var(--orange-soft);color:var(--orange-dark);transform:translateY(-1px);}
.brand-actions{display:flex;align-items:center;gap:10px;margin-left:auto;flex:0 0 auto;}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:52px;padding:0 26px;border-radius:12px;border:1.5px solid transparent;
  font-size:16px;font-weight:700;cursor:pointer;white-space:nowrap;
  transition:background-color .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease),transform .2s var(--ease),box-shadow .2s var(--ease);
}
.btn i{transition:transform .2s var(--ease);}
.btn:hover i{transform:translateX(4px);}
.btn-primary{background:var(--orange);color:#fff;box-shadow:0 6px 18px rgba(255,106,42,.24);}
.btn-primary:hover{background:var(--orange-dark);color:#fff;transform:translateY(-2px);box-shadow:0 10px 24px rgba(255,106,42,.28);}
.btn-primary:active{transform:translateY(1px);}
.btn-ghost{background:transparent;color:var(--ink-2);border-color:var(--ink);}
.btn-ghost:hover{background:var(--orange-soft);border-color:var(--orange);color:var(--orange-dark);transform:translateY(-2px);}
.btn-sm{height:40px;padding:0 16px;font-size:14px;border-radius:10px;}
.btn-lg{height:56px;padding:0 32px;font-size:17px;}
.btn-light{background:transparent;color:#F7F5F0;border-color:rgba(247,245,240,.45);}
.btn-light:hover{background:rgba(255,106,42,.16);border-color:var(--orange);color:#fff;}

.nav-toggle{
  display:none;width:40px;height:40px;border-radius:10px;border:1px solid var(--border);
  background:var(--white);color:var(--ink-2);cursor:pointer;align-items:center;justify-content:center;font-size:16px;
}
.nav-toggle:hover{border-color:var(--orange);color:var(--orange);}

.channel-bar{border-top:1px solid var(--line);}
.channel-inner{display:flex;align-items:center;gap:28px;height:44px;overflow-x:auto;scrollbar-width:none;}
.channel-inner::-webkit-scrollbar{display:none;}
.channel-link{
  position:relative;height:44px;display:inline-flex;align-items:center;
  font-size:15px;font-weight:600;color:var(--text-2);white-space:nowrap;
}
.channel-link::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:3px;border-radius:3px 3px 0 0;
  background:var(--orange);transform:scaleX(0);transform-origin:center;transition:transform .2s var(--ease);
}
.channel-link:hover{color:var(--ink-2);}
.channel-link:hover::after{transform:scaleX(1);}
.channel-link.is-active{color:var(--ink-2);font-weight:800;}
.channel-link.is-active::after{transform:scaleX(1);}

.mobile-panel{display:none;border-top:1px solid var(--line);padding:16px 0 22px;}
.mobile-panel .search-form{max-width:100%;margin-bottom:14px;}
.mobile-panel .hot-chips{flex-wrap:wrap;margin-bottom:14px;}
.mobile-panel .channel-inner{flex-direction:column;align-items:flex-start;height:auto;gap:2px;overflow:visible;}
.mobile-panel .channel-link{height:auto;padding:11px 0;width:100%;border-bottom:1px solid var(--line);}
.mobile-panel .channel-link::after{display:none;}
.mobile-panel .btn{width:100%;margin-top:14px;}

/* ============ 阅读进度 ============ */
.read-progress{position:fixed;top:0;left:0;height:3px;width:0;background:var(--orange);z-index:120;transition:width .1s linear;}

/* ============ 文章头部 ============ */
.article-hero{
  position:relative;background:var(--ink);color:#F7F5F0;overflow:hidden;
  padding:64px 0 72px;
}
.article-hero::before{
  content:"";position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-1.png');
  background-size:cover;background-position:center;
  opacity:.20;mix-blend-mode:luminosity;
}
.article-hero::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(100deg,rgba(14,15,18,.94) 0%,rgba(14,15,18,.78) 46%,rgba(14,15,18,.42) 100%);
}
.article-hero .grid-container{position:relative;z-index:2;}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:rgba(247,245,240,.66);margin-bottom:22px;}
.breadcrumb a{color:rgba(247,245,240,.66);}
.breadcrumb a:hover{color:var(--orange);}
.breadcrumb .sep{opacity:.5;}
.breadcrumb .current{color:#F7F5F0;font-weight:600;}
.hero-badge{
  display:inline-flex;align-items:center;gap:8px;height:30px;padding:0 14px;border-radius:999px;
  background:rgba(255,106,42,.16);border:1px solid rgba(255,106,42,.42);
  color:#FFD8C6;font-size:13px;font-weight:700;margin-bottom:18px;
}
.hero-badge i{color:var(--orange);}
.article-hero h1{
  color:#F7F5F0;font-size:clamp(30px,4.2vw,52px);line-height:1.14;letter-spacing:-.02em;
  max-width:900px;
}
.hero-sub{
  margin-top:20px;max-width:760px;font-size:17px;line-height:1.85;color:rgba(247,245,240,.76);
}
.meta-bar{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px 22px;margin-top:28px;
  font-size:13.5px;color:rgba(247,245,240,.66);
}
.meta-bar .meta-item{display:inline-flex;align-items:center;gap:7px;}
.meta-bar i{color:var(--orange);font-size:13px;}
.meta-bar .num{font-family:var(--mono);letter-spacing:.02em;}

/* ============ 主体布局 ============ */
.page-main{padding:56px 0 88px;}
.layout{display:grid;grid-template-columns:minmax(0,1fr) 332px;gap:56px;align-items:start;}

.article-shell{
  background:var(--white);border:1px solid var(--border);border-radius:var(--radius-lg);
  box-shadow:var(--shadow);padding:44px 48px 40px;
}
.lead{
  font-size:18px;line-height:1.9;color:var(--text-2);
  padding-left:18px;border-left:4px solid var(--orange);margin-bottom:32px;
}
.article-body{max-width:760px;font-size:17.5px;line-height:1.92;color:#24262B;}
.article-body p{margin:0 0 1.25em;}
.article-body h2{
  font-size:clamp(22px,2.4vw,28px);line-height:1.3;margin:2.4em 0 .8em;
  padding-left:16px;border-left:5px solid var(--orange);scroll-margin-top:120px;
}
.article-body h3{font-size:20px;line-height:1.4;margin:1.9em 0 .7em;color:var(--ink-2);scroll-margin-top:120px;}
.article-body h4{font-size:17.5px;margin:1.5em 0 .6em;color:var(--ink-2);}
.article-body ul,.article-body ol{margin:0 0 1.3em;padding-left:1.35em;list-style:disc;}
.article-body ol{list-style:decimal;}
.article-body li{margin:.45em 0;}
.article-body li::marker{color:var(--orange);font-weight:700;}
.article-body a{color:var(--orange-dark);border-bottom:1px solid rgba(255,106,42,.35);font-weight:600;}
.article-body a:hover{color:var(--orange);border-bottom-color:var(--orange);}
.article-body strong{font-weight:800;color:var(--ink-2);}
.article-body blockquote{
  margin:1.7em 0;padding:20px 24px;background:var(--bg-2);
  border-left:4px solid var(--orange);border-radius:0 var(--radius-sm) var(--radius-sm) 0;
  color:var(--text-2);font-size:16.5px;
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body img{
  border-radius:16px;margin:1.8em 0;border:1px solid var(--line);
  box-shadow:0 10px 30px rgba(16,18,22,.08);
}
.article-body figure{margin:1.8em 0;}
.article-body figcaption{font-size:13px;color:var(--text-3);text-align:center;margin-top:10px;}
.article-body table{
  width:100%;border-collapse:collapse;margin:1.6em 0;font-size:15px;
  background:var(--bg-2);border-radius:var(--radius-sm);overflow:hidden;
}
.article-body th,.article-body td{padding:12px 16px;border-bottom:1px solid var(--border);text-align:left;}
.article-body th{background:#E7E2D8;font-weight:800;color:var(--ink-2);}
.article-body tr:last-child td{border-bottom:0;}
.article-body code{
  font-family:var(--mono);font-size:14.5px;background:var(--bg-2);
  padding:2px 7px;border-radius:6px;color:var(--orange-dark);
}
.article-body pre{
  background:var(--ink);color:#E9E6E0;padding:20px 22px;border-radius:var(--radius-sm);
  overflow-x:auto;font-size:14px;line-height:1.7;margin:1.6em 0;
}
.article-body pre code{background:none;color:inherit;padding:0;}
.article-body hr{border:0;border-top:1px solid var(--line);margin:2.6em 0;}

.empty-state{
  text-align:center;padding:56px 24px;border:1px dashed var(--border);border-radius:var(--radius);
  background:var(--bg-2);
}
.empty-state .empty-icon{
  width:58px;height:58px;border-radius:16px;margin:0 auto 18px;
  background:var(--white);border:1px solid var(--border);color:var(--orange);
  display:flex;align-items:center;justify-content:center;font-size:22px;
}
.empty-state h2{font-size:22px;margin-bottom:10px;}
.empty-state p{color:var(--text-2);max-width:520px;margin:0 auto 22px;font-size:15.5px;}

/* ============ 标签与操作 ============ */
.tag-row{display:flex;flex-wrap:wrap;gap:10px;align-items:center;margin-top:40px;padding-top:28px;border-top:1px solid var(--line);}
.tag-row .tag-label{font-size:13.5px;color:var(--text-3);font-weight:700;margin-right:2px;}
.tag{
  display:inline-flex;align-items:center;gap:6px;height:32px;padding:0 14px;border-radius:999px;
  background:var(--bg-2);border:1px solid var(--border);color:var(--text-2);font-size:13.5px;font-weight:600;
}
.tag:hover{background:var(--orange-soft);border-color:rgba(255,106,42,.42);color:var(--orange-dark);}
.tag.is-cyan{background:rgba(46,211,183,.12);border-color:rgba(46,211,183,.4);color:#188C79;}

.article-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px;}

/* ============ 上下篇 ============ */
.pager{display:grid;grid-template-columns:1fr 1fr;gap:18px;margin-top:44px;}
.pager a{
  display:block;padding:20px 22px;border:1px solid var(--border);border-radius:var(--radius);
  background:var(--bg-2);transition:transform .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease);
}
.pager a:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:rgba(255,106,42,.35);}
.pager .pager-dir{font-size:12.5px;color:var(--text-3);font-weight:700;letter-spacing:.06em;display:block;margin-bottom:8px;}
.pager .pager-title{font-size:16px;font-weight:800;color:var(--ink-2);line-height:1.5;}
.pager .next{text-align:right;}

/* ============ 侧栏 ============ */
.side-col{display:flex;flex-direction:column;gap:22px;}
.side-card{
  background:var(--white);border:1px solid var(--border);border-radius:var(--radius);
  box-shadow:var(--shadow);padding:24px;
}
.side-card.sticky{position:sticky;top:104px;}
.side-title{
  display:flex;align-items:center;gap:9px;font-size:15.5px;font-weight:800;color:var(--ink-2);
  margin-bottom:16px;padding-bottom:14px;border-bottom:1px solid var(--line);
}
.side-title i{color:var(--orange);font-size:14px;}

.toc-list{display:flex;flex-direction:column;gap:2px;max-height:420px;overflow-y:auto;}
.toc-list a{
  display:block;font-size:14px;line-height:1.6;color:var(--text-2);
  padding:8px 12px;border-radius:9px;border-left:2px solid transparent;
}
.toc-list a:hover{background:var(--bg-2);color:var(--orange-dark);border-left-color:var(--orange);}
.toc-list a.is-current{background:var(--orange-soft);color:var(--orange-dark);font-weight:700;border-left-color:var(--orange);}
.toc-list a.lv3{padding-left:26px;font-size:13.5px;color:var(--text-3);}
.toc-empty{font-size:13.5px;color:var(--text-3);line-height:1.7;}

.quick-list{display:flex;flex-direction:column;gap:12px;}
.quick-list a{
  display:flex;gap:12px;align-items:flex-start;padding:12px;border-radius:var(--radius-sm);
  border:1px solid transparent;
}
.quick-list a:hover{background:var(--bg-2);border-color:var(--border);}
.quick-list .q-index{
  flex:0 0 auto;width:24px;height:24px;border-radius:8px;background:var(--ink);color:var(--orange);
  font-size:12px;font-weight:800;display:flex;align-items:center;justify-content:center;font-family:var(--mono);
}
.quick-list .q-title{font-size:14.5px;font-weight:700;color:var(--ink-2);line-height:1.55;}
.quick-list .q-desc{font-size:12.5px;color:var(--text-3);margin-top:4px;}

.dark-card{
  background:var(--ink);color:#F7F5F0;border:0;position:relative;overflow:hidden;
}
.dark-card::before{
  content:"";position:absolute;inset:0;background-image:url('/assets/images/backpic/back-3.png');
  background-size:cover;background-position:center;opacity:.16;
}
.dark-card > *{position:relative;z-index:2;}
.dark-card .side-title{color:#F7F5F0;border-bottom-color:rgba(247,245,240,.18);}
.dark-card .side-title i{color:var(--orange);}
.dark-card p{font-size:14px;line-height:1.8;color:rgba(247,245,240,.74);margin-bottom:16px;}
.dark-card .btn{width:100%;}
.dark-card .btn + .btn{margin-top:10px;}
.dark-meta{display:flex;justify-content:space-between;font-size:12.5px;color:rgba(247,245,240,.6);margin-top:16px;padding-top:14px;border-top:1px solid rgba(247,245,240,.16);}
.dark-meta .num{font-family:var(--mono);color:var(--orange);}

/* ============ 相关推荐 ============ */
.related-section{margin-top:72px;padding-top:56px;border-top:1px solid var(--line);}
.section-head{margin-bottom:32px;max-width:760px;}
.section-kicker{
  display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:800;color:var(--orange-dark);
  letter-spacing:.08em;margin-bottom:12px;
}
.section-kicker::before{content:"";width:20px;height:2px;background:var(--orange);border-radius:2px;}
.section-head h2{font-size:clamp(24px,3vw,34px);line-height:1.24;margin-bottom:12px;}
.section-head p{color:var(--text-2);font-size:16px;line-height:1.8;}

.related-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px;}
.related-card{
  display:flex;flex-direction:column;background:var(--white);border:1px solid var(--border);
  border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);
  transition:transform .24s var(--ease),box-shadow .24s var(--ease),border-color .24s var(--ease);
}
.related-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:rgba(255,106,42,.35);}
.related-card .thumb{position:relative;aspect-ratio:16/9;overflow:hidden;background:var(--bg-2);}
.related-card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .5s var(--ease);}
.related-card:hover .thumb img{transform:scale(1.05);}
.related-card .thumb .badge{
  position:absolute;left:12px;top:12px;height:26px;padding:0 11px;border-radius:999px;
  background:rgba(14,15,18,.82);color:#F7F5F0;font-size:12px;font-weight:700;display:inline-flex;align-items:center;
}
.related-card .body{padding:20px 22px 22px;display:flex;flex-direction:column;flex:1 1 auto;}
.related-card h3{font-size:17px;line-height:1.5;margin-bottom:10px;transition:color .2s var(--ease);}
.related-card:hover h3{color:var(--orange-dark);}
.related-card p{font-size:14px;color:var(--text-2);line-height:1.75;flex:1 1 auto;}
.related-card .meta{display:flex;align-items:center;gap:12px;font-size:12.5px;color:var(--text-3);margin-top:16px;padding-top:14px;border-top:1px solid var(--line);}
.related-card .meta .go{margin-left:auto;color:var(--orange);font-weight:700;display:inline-flex;align-items:center;gap:6px;}
.related-card:hover .meta .go i{transform:translateX(4px);}
.related-card .meta .go i{transition:transform .2s var(--ease);}

/* ============ 底部 CTA ============ */
.cta-band{
  margin-top:80px;background:var(--ink);color:#F7F5F0;border-radius:var(--radius-lg);
  padding:52px 48px;position:relative;overflow:hidden;
}
.cta-band::before{
  content:"";position:absolute;inset:0;background-image:url('/assets/images/backpic/back-2.webp');
  background-size:cover;background-position:center;opacity:.18;
}
.cta-band > *{position:relative;z-index:2;}
.cta-grid{display:grid;grid-template-columns:minmax(0,1.25fr) minmax(0,1fr);gap:40px;align-items:center;}
.cta-band h2{color:#fff;font-size:clamp(24px,3vw,34px);line-height:1.24;margin-bottom:14px;}
.cta-band p{color:rgba(247,245,240,.76);font-size:16px;line-height:1.85;max-width:560px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;justify-content:flex-end;}
.cta-facts{display:flex;flex-wrap:wrap;gap:14px 28px;margin-top:24px;font-size:13.5px;color:rgba(247,245,240,.68);}
.cta-facts .num{font-family:var(--mono);color:var(--orange);font-weight:700;}

/* ============ FAQ ============ */
.faq-section{margin-top:72px;}
.faq-grid{display:grid;grid-template-columns:minmax(0,.85fr) minmax(0,1.15fr);gap:48px;align-items:start;}
.faq-list{border-top:1px solid var(--line);}
.faq-item{border-bottom:1px solid var(--line);}
.faq-item summary{
  display:flex;align-items:center;gap:16px;list-style:none;cursor:pointer;
  padding:20px 0;font-size:17px;font-weight:700;color:var(--ink-2);
  transition:color .2s var(--ease);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary:hover{color:var(--orange-dark);}
.faq-item summary .q-icon{
  margin-left:auto;flex:0 0 auto;width:26px;height:26px;border-radius:8px;
  background:var(--bg-2);color:var(--ink-2);display:flex;align-items:center;justify-content:center;
  font-size:12px;transition:transform .24s var(--ease),background-color .2s var(--ease),color .2s var(--ease);
}
.faq-item[open] summary .q-icon{transform:rotate(90deg);background:var(--orange);color:#fff;}
.faq-item .answer{padding:0 0 22px;font-size:15.5px;line-height:1.85;color:var(--text-2);}

/* ============ 页脚 ============ */
.site-footer{background:var(--ink);color:#F7F5F0;padding:72px 0 0;margin-top:0;}
.footer-grid{display:grid;grid-template-columns:minmax(0,1.6fr) repeat(3,minmax(0,1fr));gap:40px;padding-bottom:48px;}
.footer-brand .brand-logo{margin-bottom:18px;}
.footer-brand .brand-text{color:#F7F5F0;}
.footer-brand p{font-size:14.5px;line-height:1.85;color:rgba(247,245,240,.66);max-width:420px;}
.footer-col h4{font-size:15px;color:#F7F5F0;margin-bottom:18px;font-weight:800;}
.footer-col ul{display:flex;flex-direction:column;gap:11px;}
.footer-col a{font-size:14.5px;color:rgba(247,245,240,.68);}
.footer-col a:hover{color:var(--orange);}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;align-items:center;
  padding:22px 0;border-top:1px solid rgba(247,245,240,.16);
  font-size:13px;color:rgba(247,245,240,.55);
}
.footer-bottom .num{font-family:var(--mono);letter-spacing:.02em;}

/* ============ 响应式 ============ */
@media (max-width:1120px){
  .layout{grid-template-columns:1fr;gap:40px;}
  .side-card.sticky{position:static;}
  .related-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
}
@media (max-width:1024px){
  .hot-chips{display:none;}
  .brand-bar .search-form{max-width:300px;}
  .cta-grid{grid-template-columns:1fr;gap:28px;}
  .cta-actions{justify-content:flex-start;}
  .faq-grid{grid-template-columns:1fr;gap:28px;}
}
@media (max-width:860px){
  .brand-bar .search-form{display:none;}
  .brand-actions .btn{display:none;}
  .nav-toggle{display:flex;}
  .site-header.nav-open .mobile-panel{display:block;}
  .channel-bar{display:none;}
  .page-main{padding:36px 0 64px;}
  .article-hero{padding:40px 0 48px;}
  .article-shell{padding:28px 22px 26px;}
  .article-body{font-size:16.5px;}
  .cta-band{padding:36px 24px;}
  .pager{grid-template-columns:1fr;}
  .pager .next{text-align:left;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .footer-brand{grid-column:1 / -1;}
}
@media (max-width:640px){
  .grid-container{padding-left:16px;padding-right:16px;}
  body{font-size:16px;}
  .brand-text{font-size:16px;}
  .article-hero h1{font-size:26px;}
  .hero-sub{font-size:15.5px;}
  .meta-bar{font-size:12.5px;gap:8px 16px;}
  .related-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;}
  .article-shell{padding:22px 16px;}
  .cta-band h2{font-size:22px;}
  .btn-lg{height:50px;padding:0 22px;font-size:16px;width:100%;}
  .cta-actions .btn{width:100%;}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;scroll-behavior:auto !important;}
}

/* roulang page: category1 */
/* ============ 设计变量 ============ */
:root{
  --ink:#0E0F12;
  --ink-soft:#17181C;
  --orange:#FF6A2A;
  --orange-dark:#E85A1E;
  --cyan:#2ED3B7;
  --bg:#F7F5F0;
  --bg-2:#EFEBE3;
  --line:#DDD8CE;
  --line-2:#E6E1D8;
  --text:#17181C;
  --text-2:#5A6068;
  --text-3:#8A8F98;
  --white:#FFFFFF;
  --radius:18px;
  --radius-lg:20px;
  --radius-sm:12px;
  --shadow-1:0 1px 2px rgba(16,18,22,.06);
  --shadow-2:0 18px 44px rgba(16,18,22,.12);
  --shadow-orange:0 10px 24px rgba(255,106,42,.28);
  --font:"system-ui","-apple-system","PingFang SC","Noto Sans SC","Microsoft YaHei",sans-serif;
  --mono:"Inter","SFMono-Regular","Menlo","Consolas",monospace;
  --sp-1:8px; --sp-2:16px; --sp-3:24px; --sp-4:32px; --sp-5:48px; --sp-6:64px; --sp-7:96px;
}

/* ============ reset / base ============ */
*,*::before,*::after{ box-sizing:border-box; }
html{ -webkit-text-size-adjust:100%; scroll-behavior:smooth; }
body{
  margin:0; padding:0;
  font-family:var(--font);
  font-size:17px; line-height:1.8;
  color:var(--text);
  background:var(--bg);
  counter-reset:none;
}
h1,h2,h3,h4,h5{ margin:0; color:var(--text); font-weight:800; letter-spacing:-.01em; }
h1{ font-size:clamp(34px,5vw,64px); line-height:1.12; letter-spacing:-.02em; font-weight:900; }
h2{ font-size:clamp(26px,3.2vw,42px); line-height:1.18; font-weight:800; }
h3{ font-size:clamp(19px,1.6vw,24px); line-height:1.35; font-weight:800; }
h4{ font-size:17px; line-height:1.4; font-weight:800; }
p{ margin:0 0 1.1em; color:var(--text-2); }
p:last-child{ margin-bottom:0; }
a{ color:var(--ink); text-decoration:none; transition:color .2s ease, opacity .2s ease; }
a:hover{ color:var(--orange); }
img{ max-width:100%; height:auto; display:block; border-radius:0; }
ul,ol{ margin:0; padding:0; list-style:none; }
button{ font-family:inherit; cursor:pointer; }
strong{ color:var(--text); font-weight:800; }
em{ font-style:normal; }
:focus-visible{ outline:2px solid var(--orange); outline-offset:2px; border-radius:4px; }

.grid-container{ max-width:1280px; padding-left:24px; padding-right:24px; margin-left:auto; margin-right:auto; }
.grid-container.full{ padding-left:0; padding-right:0; }

.grid-x.grid-margin-x{ margin-left:-12px; margin-right:-12px; margin-bottom:-24px; }
.grid-x.grid-margin-x > .cell{ padding-left:12px; padding-right:12px; margin-bottom:24px; }

/* ============ 按钮 ============ */
.btn{
  display:inline-flex; align-items:center; justify-content:center; gap:8px;
  height:52px; padding:0 26px; border-radius:var(--radius-sm);
  font-size:16px; font-weight:700; letter-spacing:.01em;
  border:1.5px solid transparent; background:transparent; color:var(--ink);
  transition:background .2s ease, color .2s ease, border-color .2s ease, transform .2s ease, box-shadow .2s ease;
  white-space:nowrap;
}
.btn i{ transition:transform .2s ease; font-size:14px; }
.btn-primary{ background:var(--orange); color:#fff; border-color:var(--orange); }
.btn-primary:hover{ background:var(--orange-dark); border-color:var(--orange-dark); color:#fff; transform:translateY(-2px); box-shadow:var(--shadow-orange); }
.btn-primary:hover i{ transform:translateX(4px); }
.btn-primary:active{ transform:translateY(1px); box-shadow:none; }
.btn-ghost{ border-color:var(--ink); color:var(--ink); }
.btn-ghost:hover{ background:rgba(255,106,42,.08); border-color:var(--orange); color:var(--orange-dark); }
.btn-outline{ border-color:rgba(247,245,240,.45); color:var(--bg); }
.btn-outline:hover{ border-color:#fff; background:rgba(255,255,255,.1); color:#fff; }
.btn-sm{ height:42px; padding:0 18px; font-size:14px; border-radius:10px; }
.btn-lg{ height:56px; padding:0 34px; font-size:17px; }
.btn-block{ width:100%; }
.btn-row{ display:flex; flex-wrap:wrap; gap:14px; }

/* ============ 标签 / 徽章 ============ */
.tag{
  display:inline-flex; align-items:center; gap:6px;
  height:30px; padding:0 12px; border-radius:999px;
  font-size:13px; font-weight:600; color:var(--text-2);
  background:var(--bg-2); border:1px solid var(--line-2); white-space:nowrap;
}
.tag-cyan{ color:#0E7C6B; background:rgba(46,211,183,.14); border-color:rgba(46,211,183,.35); }
.tag-orange{ color:#B4431A; background:rgba(255,106,42,.12); border-color:rgba(255,106,42,.32); }
.badge-live{
  display:inline-flex; align-items:center; gap:7px;
  font-size:13px; font-weight:700; color:#0E7C6B;
  background:rgba(46,211,183,.14); border:1px solid rgba(46,211,183,.35);
  padding:5px 12px; border-radius:999px;
}
.badge-live::before{
  content:""; width:7px; height:7px; border-radius:50%; background:var(--cyan);
  box-shadow:0 0 0 4px rgba(46,211,183,.18); animation:pulse 2s infinite ease-in-out;
}
@keyframes pulse{ 0%,100%{ opacity:1 } 50%{ opacity:.35 } }

.eyebrow{
  display:inline-flex; align-items:center; gap:8px;
  font-size:13px; font-weight:700; letter-spacing:.08em;
  color:var(--orange); text-transform:uppercase; margin-bottom:14px;
}
.eyebrow::before{ content:""; width:22px; height:2px; background:var(--orange); display:block; }

/* ============ 页头导航 ============ */
.site-header{
  position:sticky; top:0; z-index:60;
  background:var(--bg); border-bottom:1px solid var(--line-2);
  transition:box-shadow .2s ease, background .2s ease;
}
.site-header.is-stuck{ box-shadow:0 6px 20px rgba(16,18,22,.07); }
.brand-bar{ display:flex; align-items:center; gap:20px; height:64px; transition:height .2s ease; }
.site-header.is-stuck .brand-bar{ height:56px; }

.brand-logo{ display:inline-flex; align-items:center; gap:10px; flex:0 0 auto; }
.brand-mark{
  width:36px; height:36px; border-radius:11px; background:var(--ink); color:#fff;
  display:inline-flex; align-items:center; justify-content:center;
  font-size:17px; font-weight:900; letter-spacing:0;
}
.brand-text{ font-size:18px; font-weight:900; color:var(--ink); letter-spacing:-.01em; line-height:1.1; }
.brand-text em{ color:var(--orange); }
footer .brand-text{ color:var(--bg); }
footer .brand-mark{ background:var(--orange); }

.search-form{
  flex:1 1 auto; max-width:360px; position:relative; display:flex; align-items:center;
  background:#fff; border:1px solid var(--line); border-radius:var(--radius-sm);
  height:44px; padding:0 6px 0 14px; transition:border-color .2s ease, box-shadow .2s ease;
}
.search-form:focus-within{ border-color:var(--orange); box-shadow:0 0 0 3px rgba(255,106,42,.18); }
.search-form input{
  flex:1 1 auto; border:0; outline:0; background:transparent; height:100%;
  font-family:inherit; font-size:15px; color:var(--text);
}
.search-form input::placeholder{ color:var(--text-3); }
.search-form button{
  width:34px; height:34px; border:0; border-radius:9px; background:var(--ink); color:#fff;
  display:inline-flex; align-items:center; justify-content:center; font-size:13px;
  transition:background .2s ease;
}
.search-form button:hover{ background:var(--orange); }

.hot-chips{ display:flex; align-items:center; gap:8px; flex:0 0 auto; }
.chip{
  display:inline-flex; align-items:center; gap:6px;
  height:32px; padding:0 13px; border-radius:999px;
  font-size:13px; font-weight:600; color:var(--text-2);
  border:1px solid var(--line); background:#fff; transition:all .2s ease;
}
.chip i{ color:var(--orange); font-size:11px; }
.chip:hover{ color:var(--orange-dark); border-color:rgba(255,106,42,.45); background:rgba(255,106,42,.06); }

.brand-actions{ display:flex; align-items:center; gap:10px; margin-left:auto; flex:0 0 auto; }
.nav-toggle{
  display:none; width:44px; height:44px; border-radius:11px;
  border:1px solid var(--line); background:#fff; color:var(--ink); font-size:16px;
}
.nav-toggle:hover{ border-color:var(--orange); color:var(--orange); }

.channel-bar{ border-top:1px solid var(--line-2); }
.channel-inner{
  display:flex; align-items:center; gap:6px;
  height:44px; overflow-x:auto; scrollbar-width:none;
}
.channel-inner::-webkit-scrollbar{ display:none; }
.channel-link{
  position:relative; display:inline-flex; align-items:center;
  height:44px; padding:0 16px; font-size:15px; font-weight:600; color:var(--text-2);
  white-space:nowrap; transition:color .2s ease;
}
.channel-link::after{
  content:""; position:absolute; left:16px; right:16px; bottom:0; height:3px;
  background:var(--orange); border-radius:3px 3px 0 0; transform:scaleX(0);
  transform-origin:left; transition:transform .2s ease;
}
.channel-link:hover{ color:var(--ink); }
.channel-link:hover::after{ transform:scaleX(1); }
.channel-link.is-active{ color:var(--ink); font-weight:800; }
.channel-link.is-active::after{ transform:scaleX(1); }

/* ============ 移动抽屉 ============ */
.drawer-mask{
  position:fixed; inset:0; background:rgba(14,15,18,.5); opacity:0; visibility:hidden;
  transition:opacity .25s ease, visibility .25s ease; z-index:80;
}
.drawer-mask.is-open{ opacity:1; visibility:visible; }
.mobile-drawer{
  position:fixed; top:0; right:0; bottom:0; width:min(88vw,360px);
  background:var(--bg); z-index:90; transform:translateX(100%);
  transition:transform .28s cubic-bezier(.4,0,.2,1);
  display:flex; flex-direction:column; padding:18px 20px 28px; overflow-y:auto;
  border-left:1px solid var(--line);
}
.mobile-drawer.is-open{ transform:translateX(0); }
.drawer-head{ display:flex; align-items:center; justify-content:space-between; margin-bottom:20px; }
.drawer-close{
  width:40px; height:40px; border-radius:11px; border:1px solid var(--line);
  background:#fff; color:var(--ink); font-size:15px;
}
.drawer-search{ display:flex; align-items:center; background:#fff; border:1px solid var(--line); border-radius:var(--radius-sm); height:46px; padding:0 6px 0 14px; margin-bottom:22px; }
.drawer-search input{ flex:1 1 auto; border:0; outline:0; background:transparent; font-family:inherit; font-size:15px; }
.drawer-search button{ width:34px; height:34px; border:0; border-radius:9px; background:var(--ink); color:#fff; }
.drawer-label{ font-size:12px; font-weight:800; letter-spacing:.1em; color:var(--text-3); margin:18px 0 10px; }
.drawer-nav{ display:flex; flex-direction:column; gap:2px; }
.drawer-nav a{
  display:flex; align-items:center; justify-content:space-between;
  padding:13px 14px; border-radius:12px; font-size:16px; font-weight:600; color:var(--text);
}
.drawer-nav a:hover{ background:var(--bg-2); color:var(--orange-dark); }
.drawer-nav a.is-active{ background:rgba(255,106,42,.1); color:var(--orange-dark); }
.drawer-chips{ display:flex; flex-wrap:wrap; gap:8px; }
.drawer-actions{ margin-top:26px; display:flex; flex-direction:column; gap:10px; }

/* ============ 分类页首屏 ============ */
.page-hero{
  position:relative; overflow:hidden;
  background-color:var(--ink);
  background-image:linear-gradient(115deg, rgba(14,15,18,.94) 0%, rgba(14,15,18,.82) 45%, rgba(14,15,18,.62) 100%),
                   url('/assets/images/backpic/back-1.png');
  background-size:cover; background-position:center;
  color:var(--bg); padding:56px 0 60px;
}
.page-hero::after{
  content:""; position:absolute; inset:0;
  background-image:radial-gradient(rgba(247,245,240,.14) 1px, transparent 1px);
  background-size:26px 26px; opacity:.5; pointer-events:none;
}
.page-hero .grid-container{ position:relative; z-index:2; }
.breadcrumb{ display:flex; flex-wrap:wrap; align-items:center; gap:9px; font-size:13.5px; color:rgba(247,245,240,.62); margin-bottom:22px; }
.breadcrumb a{ color:rgba(247,245,240,.82); }
.breadcrumb a:hover{ color:var(--orange); }
.breadcrumb span.sep{ opacity:.45; }
.breadcrumb .current{ color:var(--orange); font-weight:700; }

.page-hero h1{ color:#fff; max-width:900px; }
.page-hero h1 em{ color:var(--orange); }
.hero-lead{ max-width:720px; margin-top:20px; font-size:18px; line-height:1.85; color:rgba(247,245,240,.78); }
.hero-meta{ display:flex; flex-wrap:wrap; align-items:center; gap:10px; margin-top:26px; }
.hero-meta .tag{ background:rgba(247,245,240,.08); border-color:rgba(247,245,240,.22); color:rgba(247,245,240,.85); }

.filter-tags{ display:flex; flex-wrap:wrap; gap:9px; margin-top:30px; padding-top:26px; border-top:1px solid rgba(247,245,240,.14); }
.filter-tags .fchip{
  display:inline-flex; align-items:center; gap:7px; height:36px; padding:0 15px; border-radius:999px;
  font-size:14px; font-weight:600; color:rgba(247,245,240,.82);
  border:1px solid rgba(247,245,240,.22); background:rgba(247,245,240,.04);
  transition:all .2s ease; cursor:pointer;
}
.filter-tags .fchip:hover{ border-color:rgba(255,106,42,.7); color:#fff; background:rgba(255,106,42,.16); }
.filter-tags .fchip.is-on{ background:var(--orange); border-color:var(--orange); color:#fff; }

/* ============ 板块基础 ============ */
.section{ padding:96px 0; }
.section-tight{ padding:64px 0; }
.section-alt{ background:var(--bg-2); }
.section-dark{ background:var(--ink); color:var(--bg); }
.section-dark h2,.section-dark h3{ color:#fff; }
.section-dark p{ color:rgba(247,245,240,.72); }
.section-head{ max-width:760px; margin-bottom:44px; }
.section-head.center{ margin-left:auto; margin-right:auto; text-align:center; }
.section-head p{ font-size:17px; margin-top:14px; }
.section-head-row{ display:flex; align-items:flex-end; justify-content:space-between; gap:24px; margin-bottom:44px; }
.section-head-row .section-head{ margin-bottom:0; }

/* ============ 卡片 ============ */
.card{
  background:#fff; border:1px solid var(--line); border-radius:var(--radius);
  box-shadow:var(--shadow-1); padding:26px;
  transition:transform .28s ease, box-shadow .28s ease, border-color .28s ease;
  height:100%;
}
.card:hover{ transform:translateY(-4px); box-shadow:var(--shadow-2); border-color:rgba(255,106,42,.28); }
.card h3{ margin-bottom:10px; }
.card p{ font-size:15.5px; line-height:1.8; }
.card-lg{ border-radius:var(--radius-lg); padding:32px; }
.card-flat{ box-shadow:none; }
.card-index{
  font-family:var(--mono); font-size:13px; font-weight:700; color:var(--orange);
  letter-spacing:.06em; margin-bottom:12px; display:block;
}
.card-icon{
  width:46px; height:46px; border-radius:13px; display:inline-flex; align-items:center; justify-content:center;
  background:rgba(255,106,42,.1); color:var(--orange); font-size:18px; margin-bottom:18px;
}
.card-icon.cyan{ background:rgba(46,211,183,.14); color:#0E7C6B; }
.card-media{ border-radius:14px; overflow:hidden; margin-bottom:20px; border:1px solid var(--line-2); background:var(--bg-2); }
.card-media img{ width:100%; aspect-ratio:16/9; object-fit:cover; transition:transform .4s ease; }
.card:hover .card-media img{ transform:scale(1.04); }
.card-link{ display:inline-flex; align-items:center; gap:8px; font-size:14.5px; font-weight:700; color:var(--orange-dark); margin-top:16px; }
.card-link i{ transition:transform .2s ease; font-size:12px; }
.card:hover .card-link i{ transform:translateX(4px); }
.card-list{ margin-top:16px; display:flex; flex-direction:column; gap:9px; }
.card-list li{ display:flex; gap:10px; font-size:15px; color:var(--text-2); line-height:1.7; }
.card-list li i{ color:var(--cyan); font-size:12px; margin-top:8px; flex:0 0 auto; }

/* ============ 侧栏 / 目录 ============ */
.side-sticky{ position:sticky; top:132px; display:flex; flex-direction:column; gap:20px; }
.side-card{
  background:#fff; border:1px solid var(--line); border-radius:var(--radius);
  padding:24px; box-shadow:var(--shadow-1);
}
.side-card h4{ font-size:15px; letter-spacing:.02em; margin-bottom:16px; display:flex; align-items:center; gap:8px; }
.side-card h4 i{ color:var(--orange); font-size:13px; }
.toc-list{ display:flex; flex-direction:column; gap:2px; }
.toc-list a{
  display:flex; align-items:center; gap:12px; padding:10px 12px; border-radius:10px;
  font-size:15px; font-weight:600; color:var(--text-2);
}
.toc-list a:hover{ background:var(--bg-2); color:var(--orange-dark); }
.toc-list .num{ font-family:var(--mono); font-size:12px; color:var(--text-3); }
.side-cta{
  background:var(--ink); color:var(--bg); border-radius:var(--radius);
  padding:26px; background-image:linear-gradient(150deg, rgba(255,106,42,.22), transparent 60%);
}
.side-cta h4{ color:#fff; font-size:17px; margin-bottom:10px; }
.side-cta p{ font-size:14.5px; color:rgba(247,245,240,.7); margin-bottom:18px; }
.hot-words{ display:flex; flex-wrap:wrap; gap:8px; }
.hot-words a{
  font-size:13px; font-weight:600; color:var(--text-2); background:var(--bg-2);
  border:1px solid var(--line-2); padding:6px 12px; border-radius:999px;
}
.hot-words a:hover{ color:var(--orange-dark); border-color:rgba(255,106,42,.4); background:rgba(255,106,42,.08); }

/* ============ 数据条 ============ */
.stat-strip{
  display:grid; grid-template-columns:repeat(4,1fr); gap:1px; background:var(--line-2);
  border:1px solid var(--line-2); border-radius:var(--radius); overflow:hidden;
}
.stat-item{ background:#fff; padding:24px 22px; }
.stat-item .val{ font-family:var(--mono); font-size:26px; font-weight:800; color:var(--ink); line-height:1.25; }
.stat-item .val small{ font-size:14px; font-weight:600; color:var(--text-3); margin-left:3px; }
.stat-item .lbl{ font-size:13.5px; color:var(--text-3); margin-top:6px; }

/* ============ 时间轴 ============ */
.timeline{ position:relative; padding-left:36px; }
.timeline::before{
  content:""; position:absolute; left:9px; top:10px; bottom:10px; width:2px;
  background:linear-gradient(180deg, var(--orange), rgba(255,106,42,.12));
}
.tl-item{ position:relative; padding-bottom:30px; }
.tl-item:last-child{ padding-bottom:0; }
.tl-item::before{
  content:""; position:absolute; left:-36px; top:6px;
  width:20px; height:20px; border-radius:50%; background:#fff; border:3px solid var(--orange);
}
.tl-item h3{ font-size:19px; margin-bottom:8px; }
.tl-item p{ font-size:15.5px; }
.tl-note{ display:inline-flex; align-items:center; gap:8px; margin-top:10px; font-size:13.5px; color:var(--text-3); }
.tl-note i{ color:var(--cyan); font-size:12px; }

/* ============ 列表项 ============ */
.info-list{ display:flex; flex-direction:column; gap:14px; }
.info-row{
  display:flex; gap:18px; padding:22px 24px; background:#fff;
  border:1px solid var(--line); border-radius:var(--radius); box-shadow:var(--shadow-1);
  transition:transform .25s ease, box-shadow .25s ease, border-color .25s ease;
}
.info-row:hover{ transform:translateY(-3px); box-shadow:var(--shadow-2); border-color:rgba(255,106,42,.28); }
.info-row .row-ic{
  flex:0 0 auto; width:42px; height:42px; border-radius:12px;
  background:rgba(255,106,42,.1); color:var(--orange);
  display:inline-flex; align-items:center; justify-content:center; font-size:16px;
}
.info-row .row-body h4{ margin-bottom:6px; }
.info-row .row-body p{ font-size:15px; margin:0; }

/* ============ 规格小卡 ============ */
.spec-mini{ display:grid; grid-template-columns:repeat(2,1fr); gap:14px; }
.spec-mini .spec{
  background:var(--bg-2); border:1px solid var(--line-2); border-radius:14px; padding:16px 18px;
}
.spec-mini .spec .k{ font-size:13px; color:var(--text-3); margin-bottom:4px; }
.spec-mini .spec .v{ font-family:var(--mono); font-size:17px; font-weight:800; color:var(--ink); }

/* ============ 数据面板（深色） ============ */
.dark-panel{
  background:var(--ink); border-radius:var(--radius-lg); padding:40px;
  background-image:linear-gradient(130deg, rgba(255,106,42,.16), transparent 55%);
  color:var(--bg);
}
.dark-panel h3{ color:#fff; }
.dark-panel p{ color:rgba(247,245,240,.7); }
.metric-grid{ display:grid; grid-template-columns:repeat(3,1fr); gap:24px; margin-top:28px; }
.metric{ border-left:2px solid var(--orange); padding-left:18px; }
.metric .m-val{ font-family:var(--mono); font-size:30px; font-weight:800; color:#fff; line-height:1.2; }
.metric .m-lbl{ font-size:13.5px; color:rgba(247,245,240,.62); margin-top:6px; }

/* ============ FAQ ============ */
.faq-layout{ display:grid; grid-template-columns:340px 1fr; gap:56px; align-items:start; }
.faq-list{ border-top:1px solid var(--line-2); }
.faq-item{ border-bottom:1px solid var(--line-2); }
.faq-item summary{
  list-style:none; cursor:pointer; display:flex; align-items:flex-start; justify-content:space-between; gap:20px;
  padding:22px 0; font-size:17px; font-weight:700; color:var(--text); line-height:1.6;
}
.faq-item summary::-webkit-details-marker{ display:none; }
.faq-item summary:hover{ color:var(--orange-dark); }
.faq-item .faq-ic{
  flex:0 0 auto; width:28px; height:28px; border-radius:8px; margin-top:2px;
  background:var(--bg-2); color:var(--text-2);
  display:inline-flex; align-items:center; justify-content:center; font-size:13px;
  transition:transform .25s ease, background .25s ease, color .25s ease;
}
.faq-item[open] .faq-ic{ transform:rotate(90deg); background:var(--orange); color:#fff; }
.faq-item[open] summary{ color:var(--orange-dark); }
.faq-body{ padding:0 46px 24px 0; font-size:15.5px; line-height:1.85; color:var(--text-2); }

/* ============ CTA ============ */
.cta-panel{
  position:relative; overflow:hidden; border-radius:var(--radius-lg);
  background-color:var(--ink); color:var(--bg);
  background-image:linear-gradient(120deg, rgba(14,15,18,.94), rgba(14,15,18,.72)), url('/assets/images/backpic/back-3.png');
  background-size:cover; background-position:center;
  padding:56px 48px; display:flex; align-items:center; gap:40px; justify-content:space-between;
}
.cta-panel h2{ color:#fff; max-width:560px; }
.cta-panel p{ color:rgba(247,245,240,.74); max-width:560px; margin-top:14px; }
.cta-panel .cta-actions{ display:flex; flex-wrap:wrap; gap:14px; flex:0 0 auto; }

/* ============ 页脚 ============ */
.site-footer{ background:var(--ink); color:rgba(247,245,240,.7); padding:64px 0 26px; }
.footer-grid{ display:grid; grid-template-columns:1.6fr 1fr 1fr 1fr; gap:40px; }
.footer-brand p{ font-size:15px; margin-top:18px; max-width:360px; color:rgba(247,245,240,.62); }
.footer-col h4{ color:#fff; font-size:15px; margin-bottom:18px; letter-spacing:.02em; }
.footer-col ul{ display:flex; flex-direction:column; gap:11px; }
.footer-col a{ font-size:15px; color:rgba(247,245,240,.7); }
.footer-col a:hover{ color:var(--orange); }
.footer-bottom{
  margin-top:48px; padding-top:22px; border-top:1px solid rgba(247,245,240,.14);
  display:flex; flex-wrap:wrap; gap:12px; justify-content:space-between;
  font-size:13.5px; color:rgba(247,245,240,.55);
}
.footer-bottom .num{ font-family:var(--mono); }

/* ============ 入场动效 ============ */
.reveal{ opacity:0; transform:translateY(12px); transition:opacity .45s ease, transform .45s ease; }
.reveal.is-in{ opacity:1; transform:none; }

/* ============ 响应式 ============ */
@media (max-width:1024px){
  .grid-container{ padding-left:22px; padding-right:22px; }
  .section{ padding:72px 0; }
  .section-tight{ padding:56px 0; }
  .hot-chips{ display:none; }
  .search-form{ max-width:260px; }
  .faq-layout{ grid-template-columns:1fr; gap:32px; }
  .stat-strip{ grid-template-columns:repeat(2,1fr); }
  .footer-grid{ grid-template-columns:1fr 1fr; gap:32px; }
  .side-sticky{ position:static; }
  .cta-panel{ flex-direction:column; align-items:flex-start; gap:28px; padding:44px 32px; }
  .metric-grid{ grid-template-columns:repeat(3,1fr); gap:18px; }
}
@media (max-width:768px){
  body{ font-size:16px; }
  .search-form{ display:none; }
  .brand-actions .btn-ghost{ display:none; }
  .nav-toggle{ display:inline-flex; align-items:center; justify-content:center; }
  .brand-bar{ height:60px; gap:12px; }
  .site-header.is-stuck .brand-bar{ height:56px; }
  .section{ padding:56px 0; }
  .section-head{ margin-bottom:32px; }
  .section-head-row{ flex-direction:column; align-items:flex-start; gap:18px; }
  .page-hero{ padding:40px 0 44px; }
  .hero-lead{ font-size:16.5px; }
  .card{ padding:22px; }
  .card-lg{ padding:24px; }
  .dark-panel{ padding:28px 22px; }
  .metric-grid{ grid-template-columns:1fr; gap:18px; }
  .cta-panel{ padding:36px 22px; border-radius:var(--radius); }
  .footer-grid{ grid-template-columns:1fr; gap:30px; }
  .footer-bottom{ flex-direction:column; gap:8px; }
  .info-row{ padding:18px 18px; gap:14px; }
}
@media (max-width:640px){
  .grid-container{ padding-left:16px; padding-right:16px; }
  .hero-meta{ gap:8px; }
  .filter-tags .fchip{ height:34px; padding:0 13px; font-size:13px; }
  .stat-strip{ grid-template-columns:1fr; }
  .spec-mini{ grid-template-columns:1fr; }
  .btn{ width:100%; }
  .btn-row{ flex-direction:column; }
  .card .card-link{ margin-top:12px; }
  .timeline{ padding-left:30px; }
  .tl-item::before{ left:-30px; width:18px; height:18px; }
  .faq-body{ padding-right:0; }
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{ animation-duration:.001ms !important; animation-iteration-count:1 !important; transition-duration:.001ms !important; scroll-behavior:auto !important; }
  .reveal{ opacity:1; transform:none; }
}

/* roulang page: category2 */
:root{
  --ink:#0E0F12;
  --ink-2:#17181C;
  --orange:#FF6A2A;
  --orange-dark:#E85A1E;
  --cyan:#2ED3B7;
  --bg:#F7F5F0;
  --bg-alt:#EFEBE3;
  --line:#DDD8CE;
  --line-soft:#E6E1D8;
  --text:#17181C;
  --text-sub:#5A6068;
  --text-weak:#8A8F98;
  --white:#FFFFFF;
  --radius-sm:12px;
  --radius:18px;
  --radius-lg:20px;
  --radius-xl:24px;
  --shadow-1:0 1px 2px rgba(16,18,22,.06);
  --shadow-2:0 18px 44px rgba(16,18,22,.12);
  --shadow-3:0 10px 24px rgba(255,106,42,.28);
  --font-sans:system-ui,-apple-system,"PingFang SC","Noto Sans SC","Microsoft YaHei",sans-serif;
  --font-num:"Inter",ui-monospace,"SFMono-Regular",Menlo,Consolas,monospace;
  --container:1280px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.8;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{max-width:100%;display:block;height:auto;}
a{color:inherit;text-decoration:none;transition:color .18s ease,border-color .18s ease,background-color .18s ease;}
ul,ol{margin:0;padding:0;list-style:none;}
p{margin:0 0 16px;}
h1,h2,h3,h4{margin:0;font-weight:800;letter-spacing:-.01em;color:var(--text);}
button,input,textarea,select{font-family:inherit;font-size:inherit;color:inherit;}
button{cursor:pointer;}
a:focus-visible,button:focus-visible,summary:focus-visible,input:focus-visible{
  outline:2px solid var(--orange);
  outline-offset:2px;
}
.num{font-family:var(--font-num);font-variant-numeric:tabular-nums;letter-spacing:.01em;}
.grid-container{max-width:var(--container);padding-left:24px;padding-right:24px;margin-left:auto;margin-right:auto;}
.grid-x{display:flex;flex-wrap:wrap;}
.layout-row{margin-left:-12px;margin-right:-12px;}
.layout-row>.cell{padding-left:12px;padding-right:12px;}
@media screen and (max-width:640px){
  .grid-container{padding-left:18px;padding-right:18px;}
  .layout-row{margin-left:-8px;margin-right:-8px;}
  .layout-row>.cell{padding-left:8px;padding-right:8px;}
}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:80;
  background:var(--bg);
  border-bottom:1px solid var(--line);
  transition:box-shadow .2s ease;
}
.site-header.is-scrolled{box-shadow:0 6px 22px rgba(16,18,22,.09);}
.brand-bar{display:flex;align-items:center;gap:20px;height:64px;transition:height .2s ease;}
.site-header.is-scrolled .brand-bar{height:56px;}
.brand-logo{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto;}
.brand-mark{
  width:34px;height:34px;border-radius:10px;background:var(--ink);color:var(--orange);
  display:grid;place-items:center;font-size:18px;font-weight:800;line-height:1;
}
.brand-text{font-size:18px;font-weight:800;letter-spacing:-.01em;color:var(--ink);white-space:nowrap;}
.brand-text em{font-style:normal;color:var(--orange);}
.search-form{
  display:flex;align-items:center;flex:1 1 auto;max-width:360px;height:40px;
  background:var(--white);border:1px solid var(--line);border-radius:var(--radius-sm);
  overflow:hidden;transition:border-color .18s ease,box-shadow .18s ease;
}
.search-form:focus-within{border-color:var(--orange);box-shadow:0 0 0 3px rgba(255,106,42,.18);}
.search-form input{flex:1;height:100%;border:0;outline:0;background:transparent;padding:0 14px;font-size:14px;}
.search-form input::placeholder{color:var(--text-weak);}
.search-form button{width:44px;height:100%;border:0;background:transparent;color:var(--text-sub);}
.search-form button:hover{color:var(--orange);}
.hot-chips{display:flex;align-items:center;gap:8px;flex:0 0 auto;}
.chip{
  display:inline-flex;align-items:center;gap:6px;height:32px;padding:0 14px;
  border-radius:999px;border:1px solid var(--line);background:var(--white);
  font-size:13px;color:var(--text-sub);white-space:nowrap;
}
.chip i{color:var(--orange);font-size:12px;}
.chip:hover{border-color:var(--orange);color:var(--orange);background:rgba(255,106,42,.06);}
.brand-actions{display:flex;align-items:center;gap:10px;margin-left:auto;flex:0 0 auto;}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:var(--radius-sm);
  border:1px solid var(--line);background:var(--white);color:var(--ink);font-size:16px;
}
.nav-toggle:hover{border-color:var(--orange);color:var(--orange);}
.channel-bar{border-top:1px solid var(--line-soft);height:44px;display:flex;align-items:center;}
.channel-inner{display:flex;gap:28px;overflow-x:auto;scrollbar-width:none;height:44px;}
.channel-inner::-webkit-scrollbar{display:none;}
.channel-link{
  position:relative;display:inline-flex;align-items:center;height:44px;
  font-size:15px;font-weight:500;color:var(--text-sub);white-space:nowrap;
}
.channel-link:hover{color:var(--orange);}
.channel-link.is-active{color:var(--ink);font-weight:700;}
.channel-link.is-active::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:3px;
  border-radius:3px 3px 0 0;background:var(--orange);
}

/* ---------- 移动端抽屉 ---------- */
.drawer-mask{
  position:fixed;inset:0;background:rgba(14,15,18,.5);z-index:190;
  opacity:0;visibility:hidden;transition:opacity .25s ease,visibility .25s ease;
}
.drawer-mask.is-open{opacity:1;visibility:visible;}
.nav-drawer{
  position:fixed;top:0;right:0;z-index:200;width:min(360px,86vw);height:100%;
  background:var(--bg);box-shadow:-20px 0 44px rgba(16,18,22,.2);
  transform:translateX(102%);transition:transform .28s ease;
  padding:22px;overflow-y:auto;display:flex;flex-direction:column;gap:24px;
}
.nav-drawer.is-open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;gap:12px;}
.drawer-close{width:40px;height:40px;border-radius:var(--radius-sm);border:1px solid var(--line);background:var(--white);color:var(--ink);}
.drawer-close:hover{border-color:var(--orange);color:var(--orange);}
.drawer-title{font-size:13px;font-weight:700;color:var(--text-weak);letter-spacing:.06em;margin-bottom:10px;}
.drawer-nav a{
  display:flex;align-items:center;justify-content:space-between;
  padding:13px 0;font-size:16px;font-weight:600;border-bottom:1px solid var(--line-soft);
}
.drawer-nav a:hover{color:var(--orange);}
.drawer-nav a.is-active{color:var(--orange);}
.drawer-chips{display:flex;flex-wrap:wrap;gap:8px;}
.drawer-actions{display:flex;flex-direction:column;gap:10px;margin-top:auto;padding-top:16px;}
body.no-scroll{overflow:hidden;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 22px;border-radius:var(--radius-sm);
  font-size:16px;font-weight:700;border:1.5px solid transparent;
  transition:transform .18s ease,background-color .18s ease,box-shadow .18s ease,border-color .18s ease,color .18s ease;
}
.btn i{transition:transform .18s ease;}
.btn-primary{background:var(--orange);color:#fff;box-shadow:var(--shadow-1);}
.btn-primary:hover{background:var(--orange-dark);color:#fff;transform:translateY(-2px);box-shadow:var(--shadow-3);}
.btn-primary:hover i{transform:translateX(4px);}
.btn-primary:active{transform:translateY(1px);box-shadow:var(--shadow-1);}
.btn-ghost{background:transparent;border-color:var(--ink);color:var(--ink);}
.btn-ghost:hover{background:rgba(255,106,42,.08);border-color:var(--orange);color:var(--orange);}
.btn-ghost:active{transform:translateY(1px);}
.btn-outline-light{background:transparent;border-color:rgba(247,245,240,.42);color:var(--bg);}
.btn-outline-light:hover{border-color:var(--orange);color:var(--orange);background:rgba(255,106,42,.1);}
.btn-white{background:var(--white);color:var(--ink);border-color:var(--white);}
.btn-white:hover{background:var(--bg-alt);color:var(--ink);transform:translateY(-2px);}
.btn-sm{height:40px;padding:0 16px;font-size:14px;border-radius:10px;}
.btn-lg{height:56px;padding:0 30px;font-size:17px;border-radius:14px;}

/* ---------- 页面头图 ---------- */
.page-hero{position:relative;overflow:hidden;background:var(--ink);padding:56px 0 52px;}
.page-hero-bg{
  position:absolute;inset:0;background-image:url('/assets/images/backpic/back-2.webp');
  background-size:cover;background-position:center;opacity:.3;
}
.page-hero::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(14,15,18,.68) 0%,rgba(14,15,18,.9) 100%);
}
.page-hero .grid-container{position:relative;z-index:2;}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:rgba(247,245,240,.66);margin-bottom:22px;}
.breadcrumb a:hover{color:var(--orange);}
.breadcrumb .sep{opacity:.5;}
.page-hero .eyebrow{color:var(--orange);}
.page-hero h1{
  color:var(--bg);font-size:clamp(30px,4.2vw,52px);line-height:1.14;font-weight:900;
  letter-spacing:-.02em;margin:14px 0 18px;max-width:900px;
}
.page-hero-lead{max-width:720px;font-size:17px;line-height:1.85;color:rgba(247,245,240,.78);margin:0 0 26px;}
.page-hero .chip{background:rgba(247,245,240,.08);border-color:rgba(247,245,240,.2);color:#EDE9E1;}
.page-hero .chip:hover{background:rgba(255,106,42,.16);border-color:var(--orange);color:var(--orange);}
.hero-chip-row{display:flex;flex-wrap:wrap;gap:10px;}

/* ---------- 通用板块 ---------- */
.section{padding:88px 0;}
.section-tight{padding:64px 0;}
.section-alt{background:var(--bg-alt);}
.section-head{margin-bottom:34px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:700;
  letter-spacing:.06em;color:var(--orange);
}
.section-title{font-size:clamp(24px,2.8vw,36px);line-height:1.2;font-weight:800;margin:12px 0 12px;}
.section-desc{max-width:720px;font-size:16px;color:var(--text-sub);margin:0;}

/* ---------- 主体两栏 ---------- */
.content-layout{align-items:flex-start;}
.main-col{margin-bottom:48px;}
@media screen and (min-width:1024px){
  .main-col{margin-bottom:0;}
}
.block{margin-bottom:56px;}
.block:last-child{margin-bottom:0;}
.block-head{margin-bottom:24px;}
.block-head h2{font-size:clamp(22px,2.2vw,30px);line-height:1.24;}
.block-head p{margin:10px 0 0;color:var(--text-sub);font-size:15.5px;max-width:680px;}

/* ---------- 时间轴 ---------- */
.timeline{position:relative;padding-left:0;}
.timeline::before{
  content:"";position:absolute;left:11px;top:8px;bottom:8px;width:2px;
  background:linear-gradient(180deg,var(--orange) 0%,var(--line) 90%);
}
.timeline-item{position:relative;padding-left:40px;padding-bottom:26px;}
.timeline-item:last-child{padding-bottom:0;}
.timeline-dot{
  position:absolute;left:4px;top:6px;width:16px;height:16px;border-radius:50%;
  background:var(--white);border:3px solid var(--orange);
}
.timeline-stamp{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-bottom:10px;}
.timeline-stamp .date{font-size:13px;color:var(--text-weak);font-family:var(--font-num);}
.badge{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:999px;
  font-size:12px;font-weight:700;background:rgba(255,106,42,.12);color:var(--orange-dark);
}
.badge-cyan{background:rgba(46,211,183,.16);color:#128D79;}
.badge-ink{background:rgba(14,15,18,.08);color:var(--ink);}
.tl-card{
  display:flex;gap:20px;background:var(--white);border:1px solid var(--line);
  border-radius:var(--radius);padding:20px;box-shadow:var(--shadow-1);
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.tl-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:rgba(255,106,42,.35);}
.tl-thumb{flex:0 0 200px;width:200px;border-radius:var(--radius-sm);overflow:hidden;background:var(--bg-alt);}
.tl-thumb img{width:100%;height:100%;object-fit:cover;aspect-ratio:16/10;}
.tl-body{flex:1;min-width:0;}
.tl-body h3{font-size:19px;line-height:1.4;margin:10px 0 8px;}
.tl-body p{margin:0 0 12px;font-size:15px;color:var(--text-sub);}
.link-more{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:700;color:var(--ink);}
.link-more i{font-size:12px;transition:transform .18s ease;}
.link-more:hover{color:var(--orange);}
.link-more:hover i{transform:translateX(4px);}

/* ---------- 步骤 ---------- */
.steps{display:flex;flex-direction:column;gap:14px;}
.step{
  display:flex;gap:18px;align-items:flex-start;background:var(--white);
  border:1px solid var(--line);border-radius:var(--radius);padding:20px 22px;
  box-shadow:var(--shadow-1);transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.step:hover{transform:translateY(-3px);box-shadow:var(--shadow-2);border-color:rgba(46,211,183,.45);}
.step-index{
  flex:0 0 40px;width:40px;height:40px;border-radius:12px;background:var(--ink);color:var(--orange);
  display:grid;place-items:center;font-weight:800;font-size:16px;font-family:var(--font-num);
}
.step-body h3{font-size:18px;margin-bottom:6px;}
.step-body p{margin:0;font-size:15px;color:var(--text-sub);}

/* ---------- 排查纵向列表 ---------- */
.check-list{border-top:1px solid var(--line);}
.check-item{
  display:flex;gap:18px;align-items:flex-start;padding:20px 4px;border-bottom:1px solid var(--line);
  transition:background-color .2s ease;
}
.check-item:hover{background:rgba(255,106,42,.04);}
.check-icon{
  flex:0 0 36px;width:36px;height:36px;border-radius:10px;display:grid;place-items:center;
  background:rgba(46,211,183,.16);color:#128D79;font-size:15px;
}
.check-body h3{font-size:17px;margin-bottom:6px;}
.check-body p{margin:0;font-size:15px;color:var(--text-sub);}
.check-body .tag-row{display:flex;flex-wrap:wrap;gap:8px;margin-top:10px;}
.tag{
  display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:8px;
  font-size:12.5px;font-weight:600;background:var(--bg-alt);color:var(--text-sub);
}

/* ---------- 平台卡片 ---------- */
.platform-card{
  background:var(--white);border:1px solid var(--line);border-radius:var(--radius);
  overflow:hidden;box-shadow:var(--shadow-1);height:100%;
  display:flex;flex-direction:column;
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.platform-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:rgba(255,106,42,.35);}
.platform-card img{width:100%;aspect-ratio:16/9;object-fit:cover;background:var(--bg-alt);}
.platform-body{padding:20px 22px 24px;display:flex;flex-direction:column;flex:1;}
.platform-body h3{font-size:18px;margin-bottom:8px;}
.platform-body p{font-size:14.5px;color:var(--text-sub);margin:0 0 14px;}
.platform-body .link-more{margin-top:auto;}

/* ---------- 侧栏 ---------- */
.sticky-stack{display:flex;flex-direction:column;gap:20px;}
@media screen and (min-width:1024px){
  .sticky-stack{position:sticky;top:112px;}
}
.info-card{
  background:var(--white);border:1px solid var(--line);border-radius:var(--radius);
  padding:22px;box-shadow:var(--shadow-1);
}
.info-card h3{font-size:16px;margin-bottom:14px;display:flex;align-items:center;gap:8px;}
.info-card h3 i{color:var(--orange);font-size:14px;}
.info-card.dark{background:var(--ink);border-color:var(--ink);color:rgba(247,245,240,.76);}
.info-card.dark h3{color:var(--bg);}
.info-card.dark h3 i{color:var(--orange);}
.spec-list li{
  display:flex;align-items:baseline;justify-content:space-between;gap:12px;
  padding:10px 0;font-size:14px;border-bottom:1px dashed var(--line-soft);
}
.spec-list li:last-child{border-bottom:0;}
.spec-list li strong{font-size:16px;font-weight:700;color:var(--ink);}
.info-card.dark .spec-list li{border-color:rgba(247,245,240,.16);color:rgba(247,245,240,.7);}
.info-card.dark .spec-list li strong{color:#fff;}
.card-note{font-size:13px;color:var(--text-weak);margin:12px 0 0;}
.info-card.dark .card-note{color:rgba(247,245,240,.55);}
.card-actions{display:flex;flex-direction:column;gap:10px;margin-top:18px;}
.card-actions .btn{width:100%;}
.word-chips{display:flex;flex-wrap:wrap;gap:8px;}
.side-links li{padding:9px 0;border-bottom:1px solid var(--line-soft);font-size:14.5px;}
.side-links li:last-child{border-bottom:0;}
.side-links a{display:inline-flex;align-items:center;gap:8px;color:var(--text-sub);}
.side-links a:hover{color:var(--orange);}
.side-links a i{font-size:11px;color:var(--orange);}

/* ---------- FAQ ---------- */
.faq-layout{align-items:flex-start;}
.faq-side h2{font-size:clamp(24px,2.6vw,34px);line-height:1.22;margin:12px 0 14px;}
.faq-side p{color:var(--text-sub);font-size:15.5px;max-width:340px;}
.faq-list{border-top:1px solid var(--line);}
.faq-item{border-bottom:1px solid var(--line);}
.faq-item summary{
  display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:20px 2px;font-size:17px;font-weight:700;cursor:pointer;list-style:none;color:var(--ink);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary i{font-size:13px;color:var(--orange);transition:transform .22s ease;flex:0 0 auto;}
.faq-item[open] summary i{transform:rotate(90deg);}
.faq-item summary:hover{color:var(--orange);}
.faq-answer{padding:0 2px 22px;font-size:15px;line-height:1.85;color:var(--text-sub);max-width:760px;}
.faq-answer p:last-child{margin-bottom:0;}

/* ---------- 底部 CTA ---------- */
.cta-wrap{padding:0 0 88px;}
.cta-panel{
  position:relative;overflow:hidden;background:var(--ink);color:var(--bg);
  border-radius:var(--radius-xl);padding:56px 48px;
}
.cta-panel::before{
  content:"";position:absolute;inset:0;background-image:url('/assets/images/backpic/back-3.png');
  background-size:cover;background-position:center;opacity:.16;
}
.cta-inner{position:relative;z-index:2;display:flex;flex-wrap:wrap;gap:32px;align-items:center;justify-content:space-between;}
.cta-inner h2{font-size:clamp(24px,2.8vw,36px);color:var(--bg);line-height:1.22;margin-bottom:12px;}
.cta-inner p{color:rgba(247,245,240,.72);font-size:16px;margin:0;max-width:620px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink);color:rgba(247,245,240,.72);padding:64px 0 28px;}
.footer-grid{display:flex;flex-wrap:wrap;gap:40px;padding-bottom:40px;}
.footer-brand{flex:1 1 320px;max-width:420px;}
.footer-brand .brand-text{color:var(--bg);}
.footer-brand .brand-text em{color:var(--orange);}
.footer-brand p{margin:18px 0 0;font-size:14.5px;line-height:1.85;color:rgba(247,245,240,.62);}
.footer-col{flex:0 1 180px;}
.footer-col h4{color:var(--bg);font-size:15px;margin-bottom:16px;}
.footer-col li{margin-bottom:11px;font-size:14.5px;}
.footer-col a{color:rgba(247,245,240,.68);}
.footer-col a:hover{color:var(--orange);}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  border-top:1px solid rgba(247,245,240,.14);padding-top:22px;font-size:13px;color:rgba(247,245,240,.55);
}

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

/* ---------- 响应式 ---------- */
@media screen and (max-width:1100px){
  .hot-chips{display:none;}
}
@media screen and (max-width:992px){
  .section{padding:68px 0;}
  .section-tight{padding:52px 0;}
  .search-form{display:none;}
  .nav-toggle{display:grid;place-items:center;}
  .channel-bar{display:none;}
  .brand-actions .btn{display:none;}
  .brand-actions .btn.btn-primary{display:inline-flex;}
  .page-hero{padding:44px 0 40px;}
  .cta-panel{padding:44px 28px;}
  .cta-wrap{padding-bottom:68px;}
}
@media screen and (max-width:768px){
  body{font-size:15.5px;}
  .tl-card{flex-direction:column;}
  .tl-thumb{flex:none;width:100%;}
  .tl-thumb img{aspect-ratio:16/9;}
  .block{margin-bottom:44px;}
  .footer-grid{gap:32px;}
  .footer-col{flex:1 1 140px;}
}
@media screen and (max-width:520px){
  .section{padding:48px 0;}
  .brand-text{font-size:16px;}
  .brand-text em{display:inline;}
  .step{flex-direction:row;padding:18px 16px;gap:14px;}
  .check-item{padding:18px 0;gap:14px;}
  .timeline-item{padding-left:32px;}
  .timeline::before{left:9px;}
  .timeline-dot{left:2px;width:14px;height:14px;}
  .cta-panel{padding:34px 22px;border-radius:18px;}
  .cta-actions .btn{width:100%;}
  .page-hero h1{font-size:clamp(26px,7.4vw,34px);}
  .brand-actions .btn.btn-primary span{display:none;}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;}
  .js .reveal{opacity:1;transform:none;}
}