/* roulang page: index */
:root{
  --c-primary:#FF5A2B;
  --c-primary-d:#E0431A;
  --c-primary-soft:#FFE7DE;
  --c-second:#12B5A6;
  --c-second-d:#0E8F83;
  --c-second-soft:#DFF7F3;
  --c-accent:#FFC93C;
  --c-ink:#16141B;
  --c-ink-2:#26222E;
  --c-body:#4A4653;
  --c-muted:#7C7787;
  --c-bg:#F7F5F2;
  --c-surface:#FFFFFF;
  --c-line:#E7E2DA;
  --grad-heat:linear-gradient(120deg,#FF5A2B 0%,#FFC93C 100%);
  --r-8:8px;--r-12:12px;--r-16:16px;--r-24:24px;--r-999:999px;
  --sh-1:0 1px 2px rgba(22,20,27,.06),0 8px 24px rgba(22,20,27,.06);
  --sh-2:0 12px 32px rgba(22,20,27,.10);
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{margin:0;background:var(--c-bg);color:var(--c-body);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",-apple-system,BlinkMacSystemFont,sans-serif;
  font-size:16px;line-height:1.75;-webkit-font-smoothing:antialiased;}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
button{font:inherit;cursor:pointer;border:0;background:none;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
:focus-visible{outline:2px solid var(--c-second);outline-offset:2px;border-radius:6px;}
.container{width:100%;max-width:1264px;margin:0 auto;padding:0 32px;}

/* ---------- 左侧 App Shell ---------- */
.sidebar{position:fixed;top:0;left:0;bottom:0;width:240px;background:var(--c-surface);
  border-right:1px solid var(--c-line);display:flex;flex-direction:column;
  padding:22px 14px 18px;z-index:70;transition:transform .22s ease-out;}
.brand{display:flex;align-items:center;gap:10px;padding:4px 8px 22px;}
.brand-mark{width:38px;height:38px;flex:0 0 auto;border-radius:12px;background:var(--grad-heat);
  color:#fff;font-weight:800;font-size:17px;display:flex;align-items:center;justify-content:center;
  box-shadow:0 6px 16px rgba(255,90,43,.32);}
.brand-text{display:flex;flex-direction:column;min-width:0;}
.brand-name{font-size:15px;font-weight:800;color:var(--c-ink);line-height:1.3;white-space:nowrap;}
.brand-sub{font-size:11px;color:var(--c-muted);letter-spacing:1px;line-height:1.4;}
.side-nav{display:flex;flex-direction:column;gap:4px;flex:1;overflow-y:auto;padding-bottom:8px;}
.nav-item{position:relative;display:flex;align-items:center;gap:10px;height:44px;
  padding:0 12px;border-radius:12px;font-size:14px;font-weight:500;color:var(--c-body);
  transition:background .18s ease,color .18s ease;}
.nav-item i{width:18px;font-size:15px;color:var(--c-muted);transition:color .18s ease;}
.nav-item:hover{background:#F1EDE8;}
.nav-item.active{background:var(--c-primary-soft);color:var(--c-primary-d);font-weight:700;}
.nav-item.active i{color:var(--c-primary-d);}
.nav-item.active::before{content:"";position:absolute;left:0;top:10px;bottom:10px;width:4px;
  border-radius:0 4px 4px 0;background:var(--c-primary);}
.side-foot{margin-top:12px;padding-top:16px;border-top:1px solid var(--c-line);}

/* ---------- 按钮体系 ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;border-radius:12px;font-size:15px;font-weight:600;
  white-space:nowrap;transition:background .2s ease,color .2s ease,transform .2s ease,box-shadow .2s ease;}
.btn-primary{background:var(--c-primary);color:#fff;box-shadow:0 6px 18px rgba(255,90,43,.28);}
.btn-primary:hover{background:var(--c-primary-d);transform:translateY(-1px);box-shadow:var(--sh-2);}
.btn-primary:active{transform:translateY(0);}
.btn-outline{background:#fff;color:var(--c-primary);border:1px solid var(--c-primary);}
.btn-outline:hover{background:var(--c-primary-soft);transform:translateY(-1px);box-shadow:var(--sh-1);}
.btn-ghost{background:transparent;color:#fff;border:1px solid rgba(255,255,255,.45);}
.btn-ghost:hover{background:rgba(255,255,255,.14);transform:translateY(-1px);}
.btn-block{width:100%;}
.btn-sm{height:40px;padding:0 16px;font-size:14px;border-radius:10px;}
.link-more{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;
  color:var(--c-primary);transition:color .2s ease,gap .2s ease;}
.link-more:hover{color:var(--c-primary-d);gap:11px;}

/* ---------- 徽章 ---------- */
.badge{display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:999px;
  font-size:12px;font-weight:600;line-height:1;white-space:nowrap;}
.badge-cat{background:var(--c-second-soft);color:var(--c-second-d);}
.badge-rare{background:#FFF3D1;color:#94670A;}
.badge-time{background:#F1EDE8;color:var(--c-muted);}

/* ---------- 主区域 ---------- */
.main{margin-left:240px;min-height:100vh;}
.section{padding:72px 0;}
.section--alt{background:#FDFBF9;}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;flex-wrap:wrap;margin-bottom:36px;}
.sec-tag{display:inline-block;font-size:12px;font-weight:700;letter-spacing:.6px;
  color:var(--c-primary-d);background:var(--c-primary-soft);padding:5px 12px;border-radius:999px;margin-bottom:14px;}
.sec-title{font-size:32px;line-height:1.3;font-weight:700;color:var(--c-ink);}
.sec-desc{font-size:15px;line-height:1.8;color:var(--c-muted);margin-top:10px;max-width:46em;}

/* ---------- Hero ---------- */
.hero{position:relative;overflow:hidden;min-height:620px;display:flex;align-items:center;
  background:#0E0C12 url('/assets/images/backpic/back-1.png') center/cover no-repeat;}
.hero::before{content:"";position:absolute;inset:0;
  background:radial-gradient(120% 110% at 18% 34%,rgba(10,8,14,.94) 0%,rgba(10,8,14,.78) 42%,rgba(10,8,14,.42) 100%);}
.hero::after{content:"";position:absolute;inset:0;
  background:linear-gradient(45deg,rgba(255,90,43,.14) 0%,rgba(255,201,60,.08) 46%,rgba(255,90,43,0) 100%);}
.hero-inner{position:relative;z-index:2;display:grid;grid-template-columns:minmax(0,58%) minmax(0,42%);
  gap:52px;align-items:center;padding-top:72px;padding-bottom:72px;}
.hero-eyebrow{display:inline-flex;align-items:center;gap:8px;height:30px;padding:0 14px;
  border-radius:999px;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.2);
  color:#FFD8C9;font-size:13px;font-weight:600;margin-bottom:20px;}
.hero h1{color:#fff;font-size:44px;line-height:1.2;font-weight:800;letter-spacing:0;margin-bottom:18px;}
.hero-sub{color:rgba(255,255,255,.8);font-size:17px;line-height:1.75;margin-bottom:26px;max-width:30em;}
.hero-facts{display:flex;flex-wrap:wrap;gap:18px;margin-bottom:30px;}
.hero-fact{display:flex;align-items:center;gap:7px;font-size:13px;font-weight:500;color:rgba(255,255,255,.78);}
.hero-fact i{color:var(--c-accent);font-size:13px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;}
.hero-visual{position:relative;}
.hero-visual img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:24px;
  border:1px solid rgba(255,255,255,.18);transform:rotate(-1.5deg);
  box-shadow:0 26px 64px rgba(0,0,0,.45);}

/* ---------- 玩法步骤 ---------- */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}
.step{background:var(--c-surface);border:1px solid var(--c-line);border-radius:16px;
  padding:26px 22px 24px;transition:border-color .2s ease,box-shadow .2s ease,transform .2s ease;}
.step:hover{border-color:var(--c-primary-soft);box-shadow:var(--sh-1);transform:translateY(-3px);}
.step-num{display:block;font-size:32px;font-weight:800;line-height:1;color:var(--c-primary);
  letter-spacing:1px;margin-bottom:16px;}
.step h3{font-size:19px;line-height:1.4;font-weight:700;color:var(--c-ink);margin-bottom:10px;}
.step p{font-size:14px;line-height:1.8;color:var(--c-muted);}

/* ---------- 奖励 bento ---------- */
.bento{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;}
.bento-card{position:relative;background:var(--c-surface);border:1px solid var(--c-line);
  border-radius:16px;overflow:hidden;display:flex;flex-direction:column;
  transition:border-color .2s ease,box-shadow .2s ease,transform .2s ease;}
.bento-card:hover{border-color:var(--c-primary-soft);box-shadow:var(--sh-2);transform:translateY(-3px);}
.bento-card--lg{grid-column:span 2;min-height:268px;justify-content:flex-end;background:var(--c-ink);}
.bento-card--lg img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:.88;
  transition:transform .25s ease-out;}
.bento-card--lg:hover img{transform:scale(1.04);}
.ribbon{position:absolute;top:16px;left:16px;z-index:3;display:inline-flex;align-items:center;
  height:26px;padding:0 12px;border-radius:999px;background:var(--grad-heat);color:#fff;
  font-size:12px;font-weight:700;}
.bento-body-lg{position:relative;z-index:2;padding:52px 24px 24px;
  background:linear-gradient(180deg,rgba(10,8,14,0) 0%,rgba(10,8,14,.86) 100%);}
.bento-body-lg h3{font-size:20px;font-weight:700;color:#fff;margin-bottom:8px;}
.bento-body-lg p{font-size:14px;line-height:1.75;color:rgba(255,255,255,.76);}
.bento-card--sm{padding:22px 20px;gap:14px;align-items:flex-start;}
.reward-icon{width:44px;height:44px;border-radius:12px;background:var(--c-second-soft);
  color:var(--c-second-d);display:flex;align-items:center;justify-content:center;font-size:18px;}
.bento-card--sm h3{font-size:17px;font-weight:700;color:var(--c-ink);margin-bottom:6px;}
.bento-card--sm p{font-size:13px;line-height:1.7;color:var(--c-muted);}
.reward-qty{display:inline-flex;align-items:baseline;gap:4px;margin-top:12px;}
.reward-qty b{font-size:20px;font-weight:800;color:var(--c-primary);}
.reward-qty span{font-size:12px;color:var(--c-muted);}

/* ---------- 任务进度 ---------- */
.progress-panel{background:var(--c-surface);border:1px solid var(--c-line);border-radius:24px;padding:34px 32px;box-shadow:var(--sh-1);}
.pp-head{display:flex;align-items:center;justify-content:space-between;gap:20px;flex-wrap:wrap;margin-bottom:30px;}
.pp-head h3{font-size:22px;font-weight:700;color:var(--c-ink);}
.pp-head .pp-note{font-size:14px;color:var(--c-muted);margin-top:6px;}
.pp-count{font-size:14px;font-weight:600;color:var(--c-muted);}
.pp-count b{font-size:24px;font-weight:800;color:var(--c-primary);margin:0 3px;}
.rail-line{position:relative;height:8px;border-radius:999px;background:#EDE8E1;margin-bottom:24px;overflow:hidden;}
.rail-line i{position:absolute;left:0;top:0;bottom:0;width:60%;display:block;border-radius:999px;
  background:linear-gradient(90deg,#FF5A2B 0%,#FFC93C 100%);}
.rail-nodes{display:grid;grid-template-columns:repeat(5,1fr);gap:12px;}
.rail-node{display:flex;flex-direction:column;gap:9px;align-items:flex-start;}
.rail-node .nd{position:relative;width:28px;height:28px;border-radius:50%;display:flex;
  align-items:center;justify-content:center;font-size:12px;font-weight:700;
  border:2px solid var(--c-line);background:#fff;color:var(--c-muted);}
.rail-node.done .nd{background:var(--c-primary);border-color:var(--c-primary);color:#fff;}
.rail-node.now .nd{border-color:var(--c-primary);color:var(--c-primary);background:#fff;}
.rail-node.now .nd::after{content:"";position:absolute;inset:-6px;border-radius:50%;
  border:2px solid rgba(255,90,43,.35);animation:pls 1.8s infinite;}
@keyframes pls{0%{transform:scale(.85);opacity:.9}70%{transform:scale(1.18);opacity:0}100%{opacity:0}}
.rail-node b{font-size:14px;font-weight:600;color:var(--c-ink);line-height:1.4;}
.rail-node .st{font-size:12px;color:var(--c-muted);}
.rail-node.now .st{color:var(--c-primary-d);font-weight:600;}
.rail-node.done .st{color:var(--c-second-d);font-weight:600;}

/* ---------- CTA 条 ---------- */
.cta-band{position:relative;overflow:hidden;border-radius:24px;padding:46px 42px;
  background:var(--c-ink);
  background-image:repeating-linear-gradient(45deg,rgba(255,255,255,.045) 0 8px,transparent 8px 16px);
  display:flex;align-items:center;justify-content:space-between;gap:34px;flex-wrap:wrap;}
.cta-band::after{content:"";position:absolute;right:-90px;top:-90px;width:300px;height:300px;
  border-radius:50%;background:radial-gradient(circle,rgba(255,90,43,.36) 0%,rgba(255,90,43,0) 66%);}
.cta-text{position:relative;z-index:2;max-width:44em;}
.cta-text h2{font-size:28px;line-height:1.35;font-weight:700;color:#fff;margin-bottom:12px;}
.cta-text p{font-size:15px;line-height:1.8;color:rgba(255,255,255,.72);}
.cta-actions{position:relative;z-index:2;display:flex;gap:14px;flex-wrap:wrap;}

/* ---------- 资讯列表 ---------- */
.news-wrap{display:grid;grid-template-columns:1.15fr 1fr;gap:24px;}
.news-wrap--single{grid-template-columns:1fr;}
.news-main{display:flex;flex-direction:column;background:var(--c-surface);
  border:1px solid var(--c-line);border-radius:16px;overflow:hidden;
  transition:border-color .2s ease,box-shadow .2s ease;}
.news-main:hover{border-color:var(--c-primary-soft);box-shadow:var(--sh-2);}
.news-main .thumb{aspect-ratio:16/9;overflow:hidden;background:#EFEAE3;}
.news-main .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .25s ease-out;}
.news-main:hover .thumb img{transform:scale(1.03);}
.news-main .nbody{display:flex;flex-direction:column;gap:12px;padding:24px;flex:1;}
.news-main h3{font-size:20px;line-height:1.5;font-weight:700;color:var(--c-ink);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-main p{font-size:14px;line-height:1.8;color:var(--c-muted);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-meta{display:flex;align-items:center;justify-content:space-between;gap:12px;
  margin-top:auto;padding-top:6px;flex-wrap:wrap;}
.news-side{display:flex;flex-direction:column;gap:14px;}
.news-item{display:flex;gap:14px;background:var(--c-surface);border:1px solid var(--c-line);
  border-radius:14px;padding:16px;transition:border-color .2s ease,box-shadow .2s ease,transform .2s ease;}
.news-item:hover{border-color:var(--c-primary-soft);box-shadow:var(--sh-1);transform:translateX(3px);}
.news-item .num{flex:0 0 34px;height:34px;border-radius:10px;background:var(--c-primary-soft);
  color:var(--c-primary-d);font-size:14px;font-weight:800;display:flex;align-items:center;justify-content:center;}
.news-item .ni-body{display:flex;flex-direction:column;min-width:0;flex:1;}
.news-item h4{font-size:15px;line-height:1.5;font-weight:600;color:var(--c-ink);margin-bottom:8px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-item .meta{display:flex;gap:8px;align-items:center;flex-wrap:wrap;}
.empty-state{background:var(--c-surface);border:1px dashed var(--c-line);border-radius:16px;
  padding:58px 24px;text-align:center;color:var(--c-muted);font-size:15px;}
.empty-state i{display:block;font-size:32px;color:#D9D2C8;margin-bottom:14px;}

/* ---------- FAQ ---------- */
.faq-list{max-width:960px;margin:0 auto;border-top:1px solid var(--c-line);}
.faq-item{border-bottom:1px solid var(--c-line);}
.faq-item summary{list-style:none;cursor:pointer;display:flex;align-items:center;
  justify-content:space-between;gap:20px;padding:22px 4px;font-size:16px;font-weight:600;
  color:var(--c-ink);transition:color .18s ease;}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary:hover{color:var(--c-primary-d);}
.faq-item summary .ic{flex:0 0 26px;height:26px;border-radius:50%;border:1px solid var(--c-line);
  display:flex;align-items:center;justify-content:center;font-size:12px;color:var(--c-muted);
  transition:background .2s ease,color .2s ease,border-color .2s ease,transform .2s ease;}
.faq-item[open] summary .ic{background:var(--c-primary);border-color:var(--c-primary);
  color:#fff;transform:rotate(45deg);}
.faq-body{padding:0 4px 24px;font-size:15px;line-height:1.9;color:var(--c-body);max-width:64em;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--c-ink);color:rgba(255,255,255,.68);}
.footer-grid{display:grid;grid-template-columns:1.7fr 1fr 1fr 1.2fr;gap:40px;padding:64px 0 48px;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:18px;}
.footer-brand .brand-mark{width:36px;height:36px;font-size:16px;}
.footer-brand strong{color:#fff;font-size:17px;font-weight:800;}
.footer-desc{font-size:14px;line-height:1.9;max-width:26em;color:rgba(255,255,255,.62);}
.footer-col h4{color:#fff;font-size:14px;font-weight:600;margin-bottom:18px;}
.footer-col a{display:block;font-size:14px;line-height:2;color:rgba(255,255,255,.64);
  transition:color .18s ease,padding-left .18s ease;}
.footer-col a:hover{color:#fff;padding-left:4px;}
.footer-col p{font-size:14px;line-height:2;color:rgba(255,255,255,.64);}
.footer-bottom{border-top:1px solid rgba(255,255,255,.1);padding:22px 0 30px;
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:rgba(255,255,255,.45);}

/* ---------- 移动端壳层 ---------- */
.topbar{display:none;position:fixed;top:0;left:0;right:0;height:56px;z-index:80;
  align-items:center;justify-content:space-between;padding:0 14px;
  background:rgba(255,255,255,.97);border-bottom:1px solid var(--c-line);}
.topbar-btn{width:44px;height:44px;border-radius:12px;display:flex;align-items:center;
  justify-content:center;font-size:18px;color:var(--c-ink);transition:background .18s ease;}
.topbar-btn:hover{background:#F1EDE8;}
.topbar-brand{font-size:15px;font-weight:800;color:var(--c-ink);}
.mask{position:fixed;inset:0;background:rgba(20,16,25,.55);opacity:0;visibility:hidden;
  transition:opacity .22s ease;z-index:65;}
.mask.show{opacity:1;visibility:visible;}

/* ---------- 断点 ---------- */
@media (max-width:1279px){
  .sidebar{width:216px;}
  .main{margin-left:216px;}
  .container{padding:0 24px;}
  .hero h1{font-size:38px;}
  .hero-inner{grid-template-columns:minmax(0,56%) minmax(0,44%);gap:36px;}
  .steps{grid-template-columns:repeat(2,1fr);}
  .bento{grid-template-columns:repeat(2,1fr);}
  .news-wrap{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:1023px){
  .topbar{display:flex;}
  .sidebar{width:280px;transform:translateX(-100%);box-shadow:var(--sh-2);}
  .sidebar.open{transform:translateX(0);}
  .main{margin-left:0;padding-top:56px;}
  .section{padding:56px 0;}
  .hero{min-height:0;}
  .hero-inner{grid-template-columns:1fr;gap:34px;padding-top:48px;padding-bottom:52px;}
  .hero-visual{order:2;}
  .hero h1{font-size:34px;}
  .rail-nodes{grid-template-columns:repeat(3,1fr);gap:18px;}
  .rail-line{margin-bottom:20px;}
}
@media (max-width:767px){
  .container{padding:0 16px;}
  .section{padding:40px 0;}
  .hero{padding-bottom:8px;}
  .hero h1{font-size:30px;}
  .hero-sub{font-size:15px;}
  .sec-title{font-size:24px;}
  .sec-head{margin-bottom:26px;}
  .cta-band{padding:32px 22px;border-radius:18px;}
  .cta-text h2{font-size:22px;}
  .progress-panel{padding:24px 20px;border-radius:18px;}
  .steps{grid-template-columns:1fr;}
  .bento{grid-template-columns:1fr;}
  .bento-card--lg{grid-column:span 1;min-height:230px;}
  .rail-nodes{grid-template-columns:1fr;gap:14px;}
  .rail-node{flex-direction:row;align-items:center;gap:12px;}
  .rail-node .nd{flex:0 0 auto;}
  .footer-grid{grid-template-columns:1fr;gap:28px;padding:44px 0 32px;}
  .news-main h3{font-size:18px;}
  .faq-item summary{font-size:15px;padding:18px 2px;}
  .btn{height:44px;padding:0 18px;}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms !important;animation-iteration-count:1 !important;
    transition-duration:.001ms !important;scroll-behavior:auto !important;}
}

/* roulang page: category1 */
:root{
  --c-primary:#FF5A2B;
  --c-primary-d:#E0431A;
  --c-primary-soft:#FFE7DE;
  --c-second:#12B5A6;
  --c-second-soft:#DFF7F3;
  --c-accent:#FFC93C;
  --c-ink:#16141B;
  --c-ink-2:#26222E;
  --c-body:#4A4653;
  --c-muted:#7C7787;
  --c-bg:#F7F5F2;
  --c-surface:#FFFFFF;
  --c-line:#E7E2DA;
  --grad-heat:linear-gradient(120deg,#FF5A2B,#FFC93C);
  --r-8:8px;
  --r-12:12px;
  --r-16:16px;
  --r-24:24px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(22,20,27,.06),0 8px 24px rgba(22,20,27,.06);
  --sh-2:0 12px 32px rgba(22,20,27,.10);
  --sidebar-w:240px;
  --ease:200ms ease-out;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--c-body);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;transition:color var(--ease),background-color var(--ease),border-color var(--ease),transform var(--ease),box-shadow var(--ease);}
a.text-link{color:var(--c-primary);text-decoration:underline;text-underline-offset:3px;text-decoration-thickness:1px;}
a.text-link:hover{color:var(--c-primary-d);}
button{font:inherit;color:inherit;border:0;background:none;cursor:pointer;}
h1,h2,h3,h4{margin:0;color:var(--c-ink);font-weight:700;letter-spacing:0;line-height:1.28;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--c-second);outline-offset:2px;border-radius:4px;}
::selection{background:var(--c-primary-soft);color:var(--c-primary-d);}

/* ---------- 布局骨架 ---------- */
.app{display:flex;min-height:100vh;}
.sidebar{
  position:fixed;top:0;left:0;width:var(--sidebar-w);height:100vh;
  background:var(--c-surface);border-right:1px solid var(--c-line);
  display:flex;flex-direction:column;gap:24px;padding:24px 16px;z-index:40;
}
.main{margin-left:var(--sidebar-w);flex:1;min-width:0;display:flex;flex-direction:column;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px;}

/* ---------- 侧栏 ---------- */
.brand{display:flex;align-items:center;gap:10px;padding:4px 8px;}
.brand-mark{
  width:38px;height:38px;flex:0 0 38px;border-radius:var(--r-12);
  background:var(--grad-heat);color:#fff;font-weight:800;font-size:18px;
  display:flex;align-items:center;justify-content:center;box-shadow:var(--sh-1);
}
.brand-text{display:flex;flex-direction:column;line-height:1.25;min-width:0;}
.brand-text strong{font-size:15px;color:var(--c-ink);font-weight:800;white-space:nowrap;}
.brand-text small{font-size:11px;color:var(--c-muted);}
.side-nav{display:flex;flex-direction:column;gap:6px;}
.nav-item{
  display:flex;align-items:center;gap:10px;height:44px;padding:0 12px;
  border-radius:var(--r-12);font-size:14px;font-weight:500;color:var(--c-body);
  border-left:4px solid transparent;
}
.nav-item i{font-size:15px;width:18px;text-align:center;color:var(--c-muted);transition:color var(--ease);}
.nav-item:hover{background:#F1EDE8;color:var(--c-ink);}
.nav-item:hover i{color:var(--c-primary);}
.nav-item.active{
  background:var(--c-primary-soft);color:var(--c-primary-d);font-weight:600;
  border-left-color:var(--c-primary);
}
.nav-item.active i{color:var(--c-primary-d);}
.sidebar-cta{margin-top:auto;display:flex;flex-direction:column;gap:10px;}
.sidebar-tip{font-size:12px;color:var(--c-muted);line-height:1.6;padding:0 4px;}

/* ---------- 移动端顶部栏与抽屉 ---------- */
.topbar{
  display:none;position:fixed;top:0;left:0;right:0;height:56px;z-index:50;
  align-items:center;gap:12px;padding:0 16px;
  background:rgba(255,255,255,.94);backdrop-filter:blur(6px);
  border-bottom:1px solid var(--c-line);
}
.hamburger{
  width:44px;height:44px;border-radius:var(--r-12);display:flex;align-items:center;justify-content:center;
  font-size:18px;color:var(--c-ink);background:var(--c-bg);
}
.hamburger:hover{background:var(--c-primary-soft);color:var(--c-primary-d);}
.topbar-brand{font-size:15px;font-weight:800;color:var(--c-ink);flex:1;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
.topbar-cta{
  width:40px;height:40px;border-radius:var(--r-12);background:var(--c-primary);color:#fff;
  display:flex;align-items:center;justify-content:center;box-shadow:var(--sh-1);
}
.topbar-cta:hover{background:var(--c-primary-d);}
.drawer-mask{
  position:fixed;inset:0;background:rgba(20,16,25,.55);z-index:55;
  opacity:0;visibility:hidden;transition:opacity var(--ease),visibility var(--ease);
}
.drawer-mask.open{opacity:1;visibility:visible;}
.drawer{
  position:fixed;top:0;left:0;width:280px;max-width:86vw;height:100%;z-index:60;
  background:var(--c-surface);padding:20px 16px;overflow-y:auto;
  transform:translateX(-100%);transition:transform 220ms ease-out;
  display:flex;flex-direction:column;gap:20px;
}
.drawer.open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;}
.drawer-close{width:40px;height:40px;border-radius:var(--r-12);display:flex;align-items:center;justify-content:center;background:var(--c-bg);font-size:16px;}
.drawer-close:hover{background:var(--c-primary-soft);color:var(--c-primary-d);}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 22px;border-radius:var(--r-12);
  font-size:15px;font-weight:600;white-space:nowrap;
  transition:background-color var(--ease),color var(--ease),border-color var(--ease),transform var(--ease),box-shadow var(--ease);
}
.btn-primary{background:var(--c-primary);color:#fff;box-shadow:var(--sh-1);}
.btn-primary:hover{background:var(--c-primary-d);transform:translateY(-1px);box-shadow:var(--sh-2);}
.btn-primary:active{transform:translateY(0);box-shadow:var(--sh-1);}
.btn-ghost{border:1px solid var(--c-primary);color:var(--c-primary);background:#fff;}
.btn-ghost:hover{background:var(--c-primary-soft);color:var(--c-primary-d);border-color:var(--c-primary-d);transform:translateY(-1px);}
.btn-on-dark{background:transparent;border:1px solid rgba(255,255,255,.55);color:#fff;}
.btn-on-dark:hover{background:rgba(255,255,255,.12);transform:translateY(-1px);}
.btn-block{width:100%;}
.btn-sm{height:40px;padding:0 16px;font-size:14px;border-radius:var(--r-12);}
.link-more{
  display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--c-primary);
}
.link-more:hover{color:var(--c-primary-d);gap:10px;}

/* ---------- 徽章与标签 ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;height:24px;padding:0 10px;
  border-radius:var(--r-pill);font-size:12px;font-weight:600;line-height:1;
}
.badge-second{background:var(--c-second-soft);color:var(--c-second);}
.badge-accent{background:rgba(255,201,60,.22);color:#9A6A00;}
.badge-muted{background:#EFEBE5;color:var(--c-muted);}
.badge-primary{background:var(--c-primary-soft);color:var(--c-primary-d);}

/* ---------- 面包屑 ---------- */
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;font-weight:500;color:var(--c-muted);padding:24px 0 0;}
.breadcrumb a{color:var(--c-muted);}
.breadcrumb a:hover{color:var(--c-primary);}
.breadcrumb .sep{color:#C9C3BB;}
.breadcrumb .current{color:var(--c-second);font-weight:600;}

/* ---------- 页头 Hero ---------- */
.page-hero{position:relative;overflow:hidden;color:#fff;padding-bottom:56px;}
.page-hero .hero-bg{
  position:absolute;inset:0;
  background:url('/assets/images/backpic/back-1.png') center/cover no-repeat;
}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background:radial-gradient(120% 100% at 15% 0%,rgba(22,20,27,.94) 0%,rgba(22,20,27,.72) 45%,rgba(22,20,27,.42) 100%);
}
.page-hero::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(120deg,rgba(255,90,43,.14),rgba(255,201,60,.10) 55%,transparent 85%);
}
.page-hero .container{position:relative;z-index:2;}
.page-hero .breadcrumb{color:rgba(255,255,255,.66);}
.page-hero .breadcrumb a{color:rgba(255,255,255,.66);}
.page-hero .breadcrumb a:hover{color:#fff;}
.page-hero .breadcrumb .current{color:var(--c-accent);}
.hero-body{padding-top:36px;max-width:780px;}
.hero-body .badge{margin-bottom:16px;}
.page-hero h1{
  color:#fff;font-size:44px;line-height:1.2;font-weight:800;letter-spacing:0;
}
.hero-sub{
  margin-top:14px;font-size:17px;font-weight:600;color:var(--c-accent);letter-spacing:.2px;
}
.hero-lead{margin-top:18px;font-size:16px;line-height:1.85;color:rgba(255,255,255,.82);max-width:680px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px;}
.hero-meta{
  display:flex;flex-wrap:wrap;gap:12px 28px;margin-top:34px;
  padding-top:22px;border-top:1px solid rgba(255,255,255,.14);
}
.hero-meta li{display:flex;align-items:center;gap:8px;font-size:14px;color:rgba(255,255,255,.86);}
.hero-meta li i{color:var(--c-accent);font-size:14px;}

/* ---------- 板块通用 ---------- */
.section{padding:72px 0 0;}
.section:last-of-type{padding-bottom:0;}
.section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:32px;}
.section-head h2{font-size:32px;line-height:1.3;font-weight:700;}
.section-head .section-sub{margin-top:10px;font-size:15px;color:var(--c-muted);max-width:640px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:700;
  color:var(--c-primary);letter-spacing:1px;margin-bottom:10px;
}
.eyebrow::before{content:"";width:18px;height:2px;border-radius:2px;background:var(--grad-heat);}

/* ---------- 简介 ---------- */
.intro-panel{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-16);
  box-shadow:var(--sh-1);padding:36px 40px;display:grid;grid-template-columns:1.5fr 1fr;gap:40px;
}
.intro-panel p{font-size:16px;line-height:1.9;color:var(--c-body);}
.intro-panel p + p{margin-top:16px;}
.intro-side{border-left:1px solid var(--c-line);padding-left:32px;display:flex;flex-direction:column;gap:18px;}
.intro-figure{border-radius:var(--r-16);overflow:hidden;border:1px solid var(--c-line);}
.intro-figure img{width:100%;aspect-ratio:16/10;object-fit:cover;transition:transform var(--ease);}
.intro-figure:hover img{transform:scale(1.03);}
.intro-figure figcaption{font-size:13px;color:var(--c-muted);padding:12px 14px;background:var(--c-bg);}

/* ---------- 时间线 ---------- */
.timeline{position:relative;display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}
.timeline::before{
  content:"";position:absolute;top:26px;left:26px;right:26px;height:2px;
  background:linear-gradient(90deg,var(--c-primary),var(--c-accent));opacity:.28;
}
.tl-step{position:relative;padding-top:64px;}
.tl-num{
  position:absolute;top:0;left:0;width:52px;height:52px;border-radius:50%;
  background:var(--c-surface);border:2px solid var(--c-primary);color:var(--c-primary-d);
  display:flex;align-items:center;justify-content:center;font-size:17px;font-weight:800;
  box-shadow:var(--sh-1);z-index:2;
}
.tl-step h3{font-size:19px;font-weight:700;margin-bottom:10px;}
.tl-step p{font-size:14.5px;line-height:1.8;color:var(--c-body);}
.tl-tag{display:inline-block;margin-top:12px;font-size:12px;font-weight:600;color:var(--c-second);}

/* ---------- 卡片网格 ---------- */
.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.card{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-16);
  overflow:hidden;box-shadow:var(--sh-1);display:flex;flex-direction:column;
  transition:border-color var(--ease),box-shadow var(--ease),transform var(--ease);
}
.card:hover{border-color:var(--c-primary-soft);box-shadow:var(--sh-2);transform:translateY(-2px);}
.card-media{overflow:hidden;background:#EFEBE5;}
.card-media img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform var(--ease);}
.card:hover .card-media img{transform:scale(1.03);}
.card-body{padding:22px 22px 24px;display:flex;flex-direction:column;gap:10px;flex:1;}
.card-body h3{font-size:18px;font-weight:700;line-height:1.45;}
.card-body p{font-size:14.5px;line-height:1.8;color:var(--c-muted);}
.card-foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:12px;padding-top:12px;border-top:1px dashed var(--c-line);}
.card-foot .meta{font-size:12.5px;color:var(--c-muted);}

/* ---------- 检查清单 ---------- */
.check-wrap{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-16);
  box-shadow:var(--sh-1);padding:36px 40px;display:grid;grid-template-columns:.85fr 1.15fr;gap:40px;
}
.check-wrap h2{font-size:28px;line-height:1.35;}
.check-wrap .check-sub{margin-top:12px;font-size:15px;color:var(--c-muted);line-height:1.85;}
.check-list{display:flex;flex-direction:column;}
.check-list li{display:flex;gap:14px;padding:16px 0;border-bottom:1px solid var(--c-line);}
.check-list li:first-child{padding-top:0;}
.check-list li:last-child{border-bottom:0;padding-bottom:0;}
.check-list .ico{
  width:30px;height:30px;flex:0 0 30px;border-radius:var(--r-8);
  background:var(--c-second-soft);color:var(--c-second);
  display:flex;align-items:center;justify-content:center;font-size:13px;margin-top:2px;
}
.check-list strong{display:block;font-size:15.5px;color:var(--c-ink);font-weight:700;margin-bottom:4px;}
.check-list span{font-size:14px;line-height:1.8;color:var(--c-body);}

/* ---------- FAQ ---------- */
.faq{max-width:900px;}
.faq-item{border-bottom:1px solid var(--c-line);}
.faq-item:first-child{border-top:1px solid var(--c-line);}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:20px 4px;font-size:16px;font-weight:600;color:var(--c-ink);
  transition:color var(--ease);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary:hover{color:var(--c-primary-d);}
.faq-item summary .sign{
  flex:0 0 26px;width:26px;height:26px;border-radius:50%;
  border:1px solid var(--c-line);color:var(--c-muted);
  display:flex;align-items:center;justify-content:center;font-size:13px;
  transition:background-color var(--ease),color var(--ease),border-color var(--ease),transform var(--ease);
}
.faq-item[open] summary{color:var(--c-primary-d);}
.faq-item[open] summary .sign{background:var(--c-primary);border-color:var(--c-primary);color:#fff;transform:rotate(180deg);}
.faq-item .answer{padding:0 4px 22px;font-size:15px;line-height:1.85;color:var(--c-body);max-width:760px;}

/* ---------- CTA 条 ---------- */
.cta-band{
  margin-top:72px;background:var(--c-ink);border-radius:var(--r-24);
  padding:44px 48px;display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:28px;
  position:relative;overflow:hidden;border:1px solid rgba(255,255,255,.10);
}
.cta-band::before{
  content:"";position:absolute;inset:0;opacity:.5;
  background-image:radial-gradient(rgba(255,255,255,.14) 1px,transparent 1px);
  background-size:16px 16px;
}
.cta-band > *{position:relative;z-index:2;}
.cta-band h2{color:#fff;font-size:28px;line-height:1.35;}
.cta-band p{margin-top:10px;font-size:15px;color:rgba(255,255,255,.72);max-width:520px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;}

/* ---------- 页脚 ---------- */
.site-footer{margin-top:72px;background:var(--c-ink-2);color:rgba(255,255,255,.72);padding:56px 0 0;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:36px;padding-bottom:40px;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-brand .brand-mark{width:34px;height:34px;flex:0 0 34px;font-size:16px;}
.footer-brand strong{color:#fff;font-size:16px;font-weight:800;}
.footer-desc{font-size:14px;line-height:1.9;color:rgba(255,255,255,.6);max-width:340px;}
.footer-col h4{font-size:14px;font-weight:600;color:#fff;margin-bottom:14px;}
.footer-col a{display:block;font-size:14px;line-height:1.9;color:rgba(255,255,255,.66);padding:3px 0;}
.footer-col a:hover{color:#fff;}
.footer-col p{font-size:14px;line-height:1.9;color:rgba(255,255,255,.6);}
.footer-col p + p{margin-top:10px;}
.footer-bottom{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;
  border-top:1px solid rgba(255,255,255,.10);padding:20px 0 26px;
  font-size:13px;color:rgba(255,255,255,.5);
}

/* ---------- 状态样式 ---------- */
.skeleton{background:#EFEBE5;border-radius:var(--r-8);animation:breathe 1.6s ease-in-out infinite;}
@keyframes breathe{0%,100%{opacity:1;}50%{opacity:.55;}}
.state-error{border-color:#E0431A;color:#E0431A;}
.state-ok{color:var(--c-second);}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  :root{--sidebar-w:216px;}
  .container{padding:0 24px;}
  .page-hero h1{font-size:38px;}
  .card-grid{grid-template-columns:repeat(2,1fr);}
  .intro-panel{grid-template-columns:1fr;gap:28px;}
  .intro-side{border-left:0;padding-left:0;border-top:1px solid var(--c-line);padding-top:26px;}
  .check-wrap{grid-template-columns:1fr;gap:28px;}
}
@media (max-width:1023px){
  .sidebar{display:none;}
  .topbar{display:flex;}
  .main{margin-left:0;padding-top:56px;}
  .section{padding-top:56px;}
  .timeline{grid-template-columns:repeat(2,1fr);}
  .timeline::before{display:none;}
  .section-head h2{font-size:26px;}
  .cta-band{padding:36px 28px;border-radius:var(--r-16);}
  .cta-band h2{font-size:24px;}
}
@media (max-width:767px){
  .container{padding:0 16px;}
  .section{padding-top:40px;}
  .page-hero{padding-bottom:40px;}
  .page-hero h1{font-size:30px;line-height:1.3;}
  .hero-sub{font-size:15px;}
  .hero-lead{font-size:15px;}
  .hero-actions{gap:12px;}
  .hero-actions .btn{flex:1 1 auto;}
  .hero-meta{gap:10px 18px;margin-top:26px;}
  .card-grid{grid-template-columns:1fr;}
  .timeline{grid-template-columns:1fr;gap:28px;}
  .timeline::before{display:block;left:26px;right:auto;top:26px;width:2px;height:calc(100% - 60px);}
  .tl-step{padding-top:0;padding-left:70px;min-height:56px;}
  .tl-num{position:absolute;top:0;left:0;}
  .intro-panel{padding:24px 20px;border-radius:var(--r-12);}
  .check-wrap{padding:24px 20px;border-radius:var(--r-12);}
  .check-wrap h2{font-size:22px;}
  .section-head h2{font-size:24px;}
  .faq-item summary{font-size:15px;padding:16px 2px;}
  .cta-band{margin-top:40px;padding:28px 20px;}
  .footer-grid{grid-template-columns:1fr;gap:28px;padding-bottom:28px;}
  .site-footer{margin-top:48px;padding-top:40px;}
  .site-footer .footer-bottom{flex-direction:column;align-items:flex-start;}
  .btn{min-height:44px;}
}
@media (max-width:520px){
  .page-hero h1{font-size:26px;}
  .hero-actions .btn{width:100%;}
  .cta-actions .btn{width:100%;}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;}
}

/* roulang page: category2 */
:root{
  --c-primary:#FF5A2B;
  --c-primary-d:#E0431A;
  --c-primary-soft:#FFE7DE;
  --c-second:#12B5A6;
  --c-second-soft:#DFF7F3;
  --c-accent:#FFC93C;
  --c-ink:#16141B;
  --c-ink-2:#26222E;
  --c-body:#4A4653;
  --c-muted:#7C7787;
  --c-bg:#F7F5F2;
  --c-surface:#FFFFFF;
  --c-line:#E7E2DA;
  --grad-heat:linear-gradient(120deg,#FF5A2B,#FFC93C);
  --sh-1:0 1px 2px rgba(22,20,27,.06),0 8px 24px rgba(22,20,27,.06);
  --sh-2:0 12px 32px rgba(22,20,27,.10);
  --r-8:8px; --r-12:12px; --r-16:16px; --r-24:24px; --r-999:999px;
  --sidebar-w:240px;
  --font:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.75;
  color:var(--c-body);
  background:var(--c-bg);
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
button{font-family:inherit;}
h1,h2,h3,h4{margin:0;color:var(--c-ink);letter-spacing:0;}
p{margin:0;}
ul,ol{margin:0;padding:0;}

/* ---------- App Shell ---------- */
.app-shell{min-height:100vh;}
.sidebar{
  position:fixed;
  top:0;left:0;bottom:0;
  width:var(--sidebar-w);
  background:var(--c-surface);
  border-right:1px solid var(--c-line);
  display:flex;
  flex-direction:column;
  padding:22px 16px 20px;
  z-index:60;
}
.side-brand{
  display:flex;align-items:center;gap:10px;
  padding:6px 8px 18px;
  border-bottom:1px solid var(--c-line);
  margin-bottom:16px;
}
.brand-mark{
  width:36px;height:36px;flex:0 0 36px;
  border-radius:var(--r-12);
  background:var(--grad-heat);
  color:#fff;font-weight:800;font-size:18px;
  display:flex;align-items:center;justify-content:center;
}
.brand-text{display:flex;flex-direction:column;line-height:1.25;}
.brand-text strong{font-size:15px;color:var(--c-ink);font-weight:700;}
.brand-text span{font-size:11px;color:var(--c-muted);letter-spacing:.04em;}
.side-nav{display:flex;flex-direction:column;gap:4px;}
.nav-item{
  display:flex;align-items:center;gap:10px;
  height:44px;padding:0 12px;
  border-radius:var(--r-12);
  font-size:14px;font-weight:500;color:var(--c-body);
  transition:background .2s ease-out,color .2s ease-out;
  position:relative;
}
.nav-item i{width:16px;text-align:center;font-size:15px;color:var(--c-muted);transition:color .2s ease-out;}
.nav-item:hover{background:#F1EDE8;color:var(--c-ink);}
.nav-item:hover i{color:var(--c-primary);}
.nav-item.active{
  background:var(--c-primary-soft);
  color:var(--c-primary-d);
  font-weight:600;
}
.nav-item.active i{color:var(--c-primary-d);}
.nav-item.active::before{
  content:"";position:absolute;left:-16px;top:10px;bottom:10px;width:4px;
  border-radius:0 4px 4px 0;background:var(--c-primary);
}
.side-sep{height:1px;background:var(--c-line);margin:18px 8px;}
.side-cta{margin-top:auto;display:flex;flex-direction:column;gap:8px;}
.side-cta .hint{font-size:12px;color:var(--c-muted);padding:0 8px;line-height:1.6;}

.topbar{
  display:none;
  position:fixed;top:0;left:0;right:0;height:56px;
  background:var(--c-surface);
  border-bottom:1px solid var(--c-line);
  align-items:center;
  padding:0 14px;
  gap:12px;
  z-index:70;
}
.topbar .burger{
  width:40px;height:40px;border-radius:var(--r-12);
  border:1px solid var(--c-line);background:var(--c-surface);
  color:var(--c-ink);font-size:16px;cursor:pointer;
}
.topbar .top-brand{
  display:flex;align-items:center;gap:8px;font-weight:700;font-size:15px;color:var(--c-ink);
  flex:1;min-width:0;
}
.topbar .top-brand .brand-mark{width:30px;height:30px;flex:0 0 30px;font-size:15px;}
.topbar .top-cta{
  height:36px;padding:0 14px;border-radius:var(--r-999);
  background:var(--c-primary);color:#fff;font-size:13px;font-weight:600;
  display:inline-flex;align-items:center;gap:6px;
}
.overlay{
  display:none;position:fixed;inset:0;background:rgba(20,16,25,.55);z-index:55;
}
.overlay.show{display:block;}

.app-main{padding-left:var(--sidebar-w);}
.container{
  width:100%;max-width:1200px;margin:0 auto;
  padding:0 32px;
}

/* ---------- 面包屑 ---------- */
.breadcrumb{
  font-size:13px;color:var(--c-muted);
  padding:28px 0 0;
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
}
.breadcrumb a{color:var(--c-muted);transition:color .18s ease-out;}
.breadcrumb a:hover{color:var(--c-primary);}
.breadcrumb .sep{color:#C9C3BA;}
.breadcrumb .current{color:var(--c-ink);font-weight:600;}

/* ---------- Hero ---------- */
.hero{
  position:relative;
  margin-top:24px;
  border-radius:var(--r-24);
  overflow:hidden;
  padding:52px 48px 46px;
  background-image:
    linear-gradient(135deg,rgba(255,90,43,.10) 0%,rgba(255,201,60,.10) 45%,rgba(255,90,43,0) 75%),
    radial-gradient(120% 120% at 12% 0%,rgba(12,10,16,.90) 0%,rgba(12,10,16,.66) 42%,rgba(12,10,16,.30) 100%),
    url('/assets/images/backpic/back-1.png');
  background-size:cover,cover,cover;
  background-position:center,center,center;
  color:#fff;
  box-shadow:var(--sh-2);
}
.hero-inner{position:relative;z-index:2;max-width:760px;}
.hero .eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  height:28px;padding:0 12px;border-radius:var(--r-999);
  background:rgba(255,255,255,.12);
  border:1px solid rgba(255,255,255,.20);
  font-size:12px;font-weight:600;letter-spacing:.03em;
  color:#fff;
}
.hero h1{
  margin-top:18px;
  font-size:44px;line-height:1.18;font-weight:800;color:#fff;
  max-width:19em;
}
.hero .sub{
  margin-top:14px;font-size:17px;line-height:1.6;color:rgba(255,255,255,.86);
  max-width:34em;
}
.hero-facts{
  margin-top:26px;display:flex;flex-wrap:wrap;gap:12px;
}
.fact-chip{
  display:inline-flex;align-items:center;gap:8px;
  height:34px;padding:0 14px;border-radius:var(--r-999);
  background:rgba(255,255,255,.10);
  border:1px solid rgba(255,255,255,.16);
  font-size:13px;font-weight:500;color:rgba(255,255,255,.94);
}
.fact-chip i{color:var(--c-accent);font-size:12px;}
.hero-actions{
  margin-top:30px;display:flex;flex-wrap:wrap;gap:12px;
}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 26px;
  border-radius:var(--r-12);
  font-size:15px;font-weight:600;
  border:1px solid transparent;
  cursor:pointer;
  transition:background .2s ease-out,color .2s ease-out,transform .2s ease-out,box-shadow .2s ease-out,border-color .2s ease-out;
}
.btn i{font-size:14px;}
.btn-primary{background:var(--c-primary);color:#fff;box-shadow:var(--sh-1);}
.btn-primary:hover{background:var(--c-primary-d);transform:translateY(-1px);box-shadow:var(--sh-2);}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.45);}
.btn-ghost:hover{background:rgba(255,255,255,.12);border-color:#fff;transform:translateY(-1px);}
.btn-outline{background:var(--c-surface);color:var(--c-primary-d);border-color:var(--c-primary);}
.btn-outline:hover{background:var(--c-primary-soft);transform:translateY(-1px);box-shadow:var(--sh-1);}
.btn-dark{background:var(--c-ink);color:#fff;}
.btn-dark:hover{background:#000;transform:translateY(-1px);box-shadow:var(--sh-2);}
.btn:focus-visible,a:focus-visible,summary:focus-visible,button:focus-visible{
  outline:2px solid var(--c-second);outline-offset:2px;
}
.btn:disabled{opacity:.4;cursor:not-allowed;transform:none;box-shadow:none;}

/* ---------- 板块基础 ---------- */
.section{padding-top:72px;}
.section-head{
  display:flex;align-items:flex-end;justify-content:space-between;gap:20px;
  margin-bottom:26px;
}
.section-head h2{
  font-size:32px;line-height:1.3;font-weight:700;
}
.section-head p{
  margin-top:8px;font-size:15px;color:var(--c-muted);max-width:46em;
}
.text-link{
  font-size:14px;font-weight:600;color:var(--c-primary);
  display:inline-flex;align-items:center;gap:6px;white-space:nowrap;
  transition:color .18s ease-out,gap .18s ease-out;
}
.text-link:hover{color:var(--c-primary-d);gap:10px;}

/* ---------- 简介 ---------- */
.intro-box{
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-16);
  padding:34px 36px;
  box-shadow:var(--sh-1);
}
.intro-box p{font-size:16px;line-height:1.85;color:var(--c-body);}
.intro-box p + p{margin-top:16px;}
.intro-box strong{color:var(--c-ink);}

/* ---------- Bento ---------- */
.bento{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:20px;
}
.bento-card{
  position:relative;
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-16);
  padding:24px;
  box-shadow:var(--sh-1);
  transition:border-color .2s ease-out,transform .2s ease-out,box-shadow .2s ease-out;
  display:flex;flex-direction:column;gap:12px;
  overflow:hidden;
}
.bento-card:hover{border-color:var(--c-primary-soft);transform:translateY(-2px);box-shadow:var(--sh-2);}
.bento-card.span-2{grid-column:span 2;}
.bento-card .thumb{
  border-radius:var(--r-12);
  overflow:hidden;
  aspect-ratio:16/9;
  background:#EFEBE5;
}
.bento-card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .25s ease-out;}
.bento-card:hover .thumb img{transform:scale(1.03);}
.bento-card h3{font-size:20px;font-weight:600;line-height:1.4;}
.bento-card p{font-size:14px;line-height:1.75;color:var(--c-muted);}
.bento-icon{
  width:44px;height:44px;border-radius:var(--r-12);
  background:var(--c-second-soft);color:var(--c-second);
  display:flex;align-items:center;justify-content:center;font-size:18px;
}
.ribbon{
  position:absolute;top:16px;right:16px;
  height:24px;padding:0 10px;border-radius:var(--r-999);
  background:rgba(22,20,27,.78);color:#fff;
  font-size:12px;font-weight:600;display:inline-flex;align-items:center;
}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  height:24px;padding:0 10px;border-radius:var(--r-999);
  font-size:12px;font-weight:600;
}
.badge-cat{background:var(--c-second-soft);color:var(--c-second);}
.badge-hot{background:var(--c-accent);color:#4A3606;}
.badge-time{background:#EFEBE5;color:var(--c-muted);}

/* ---------- 编号列表 ---------- */
.steps{
  display:grid;
  grid-template-columns:repeat(2,1fr);
  gap:18px 24px;
}
.step{
  display:flex;gap:16px;
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-16);
  padding:22px 24px;
  box-shadow:var(--sh-1);
  transition:border-color .2s ease-out,box-shadow .2s ease-out,transform .2s ease-out;
}
.step:hover{border-color:var(--c-primary-soft);box-shadow:var(--sh-2);transform:translateY(-2px);}
.step-num{
  flex:0 0 46px;width:46px;height:46px;border-radius:var(--r-999);
  background:var(--grad-heat);color:#fff;
  font-size:16px;font-weight:800;
  display:flex;align-items:center;justify-content:center;
  letter-spacing:.02em;
}
.step h3{font-size:17px;font-weight:600;margin-bottom:6px;}
.step p{font-size:14px;line-height:1.75;color:var(--c-muted);}
.step-tags{margin-top:10px;display:flex;flex-wrap:wrap;gap:8px;}

/* ---------- FAQ ---------- */
.faq-wrap{
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-16);
  padding:8px 28px;
  box-shadow:var(--sh-1);
}
.faq-item{border-bottom:1px solid var(--c-line);}
.faq-item:last-child{border-bottom:none;}
.faq-item summary{
  list-style:none;cursor:pointer;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 0;
  font-size:16px;font-weight:600;color:var(--c-ink);
  transition:color .18s ease-out;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary:hover{color:var(--c-primary-d);}
.faq-item summary .ico{
  flex:0 0 26px;width:26px;height:26px;border-radius:var(--r-999);
  border:1px solid var(--c-line);color:var(--c-primary);
  display:flex;align-items:center;justify-content:center;font-size:12px;
  transition:transform .2s ease-out,background .2s ease-out,color .2s ease-out;
}
.faq-item[open] summary .ico{background:var(--c-primary);border-color:var(--c-primary);color:#fff;transform:rotate(45deg);}
.faq-item .answer{padding:0 0 20px;font-size:15px;line-height:1.8;color:var(--c-body);max-width:52em;}

/* ---------- CTA ---------- */
.cta-band{
  margin-top:72px;
  border-radius:var(--r-24);
  background:
    radial-gradient(circle at 1px 1px,rgba(255,255,255,.07) 1px,transparent 0) 0 0/14px 14px,
    var(--c-ink);
  color:#fff;
  padding:42px 44px;
  display:flex;align-items:center;justify-content:space-between;gap:28px;
  flex-wrap:wrap;
}
.cta-band h2{color:#fff;font-size:28px;line-height:1.35;font-weight:700;}
.cta-band p{margin-top:10px;font-size:15px;color:rgba(255,255,255,.72);max-width:38em;}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap;}

/* ---------- 页脚 ---------- */
.site-footer{
  margin-top:72px;
  background:var(--c-ink-2);
  color:rgba(255,255,255,.72);
  padding:56px 0 0;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.2fr;
  gap:32px;
  padding-bottom:40px;
}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px;}
.footer-brand strong{color:#fff;font-size:16px;font-weight:700;}
.footer-desc{font-size:14px;line-height:1.85;color:rgba(255,255,255,.62);}
.footer-col h4{color:#fff;font-size:14px;font-weight:600;margin-bottom:14px;}
.footer-col a{
  display:block;font-size:14px;line-height:1.9;
  color:rgba(255,255,255,.66);
  transition:color .18s ease-out;
}
.footer-col a:hover{color:var(--c-primary);}
.footer-col p{font-size:14px;line-height:1.9;color:rgba(255,255,255,.62);}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.10);
  padding:18px 0 24px;
  display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;
  font-size:13px;color:rgba(255,255,255,.5);
}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  :root{--sidebar-w:216px;}
  .hero{padding:46px 38px 40px;}
  .hero h1{font-size:38px;}
  .section-head h2{font-size:28px;}
  .bento{grid-template-columns:repeat(2,1fr);}
  .bento-card.span-2{grid-column:span 2;}
  .steps{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;}
}
@media (max-width:1023px){
  .topbar{display:flex;}
  .sidebar{
    transform:translateX(-100%);
    transition:transform .24s ease-out;
    width:280px;
    top:0;padding-top:20px;
    box-shadow:var(--sh-2);
  }
  .sidebar.open{transform:translateX(0);}
  .app-main{padding-left:0;padding-top:56px;}
  .container{padding:0 24px;}
  .section{padding-top:56px;}
  .cta-band{margin-top:56px;}
  .site-footer{margin-top:56px;}
  .hero h1{font-size:34px;}
}
@media (max-width:767px){
  .container{padding:0 16px;}
  .breadcrumb{padding-top:20px;}
  .hero{margin-top:18px;padding:34px 22px 32px;border-radius:var(--r-16);}
  .hero h1{font-size:30px;line-height:1.25;}
  .hero .sub{font-size:15px;}
  .hero-actions .btn{width:100%;}
  .section{padding-top:40px;}
  .section-head{flex-direction:column;align-items:flex-start;gap:12px;}
  .section-head h2{font-size:24px;}
  .intro-box{padding:24px 20px;}
  .bento{grid-template-columns:1fr;}
  .bento-card.span-2{grid-column:span 1;}
  .bento-card{padding:20px;}
  .step{padding:18px 18px;gap:14px;}
  .step-num{flex:0 0 40px;width:40px;height:40px;font-size:15px;}
  .faq-wrap{padding:4px 18px;}
  .faq-item summary{font-size:15px;padding:17px 0;}
  .cta-band{padding:30px 22px;border-radius:var(--r-16);}
  .cta-band h2{font-size:22px;}
  .cta-actions{width:100%;}
  .cta-actions .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;gap:26px;}
  .footer-bottom{flex-direction:column;gap:6px;}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important;}
}

/* roulang page: article */
:root{
  --c-primary:#FF5A2B;
  --c-primary-d:#E0431A;
  --c-primary-soft:#FFE7DE;
  --c-second:#12B5A6;
  --c-second-soft:#DFF7F3;
  --c-accent:#FFC93C;
  --c-ink:#16141B;
  --c-ink-2:#26222E;
  --c-body:#4A4653;
  --c-muted:#7C7787;
  --c-bg:#F7F5F2;
  --c-surface:#FFFFFF;
  --c-line:#E7E2DA;
  --grad-heat:linear-gradient(120deg,#FF5A2B,#FFC93C);
  --sh-1:0 1px 2px rgba(22,20,27,.06),0 8px 24px rgba(22,20,27,.06);
  --sh-2:0 12px 32px rgba(22,20,27,.10);
  --r-xs:8px;--r-sm:12px;--r-md:16px;--r-lg:24px;--r-pill:999px;
  --sidebar-w:240px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
  background:var(--c-bg);color:var(--c-body);
  font-size:16px;line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,h5{margin:0;color:var(--c-ink);line-height:1.32;font-weight:700}
p{margin:0}
ul,ol{margin:0}
img{display:block;max-width:100%}
a{color:var(--c-primary-d);text-decoration:none}
button{font-family:inherit}
:focus-visible{outline:2px solid var(--c-second);outline-offset:2px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px}

/* ============ 侧边导航（App Shell） ============ */
.sidebar{
  position:fixed;top:0;left:0;z-index:60;
  width:var(--sidebar-w);height:100vh;
  background:var(--c-surface);
  border-right:1px solid var(--c-line);
  display:flex;flex-direction:column;
  padding:22px 16px 18px;
  overflow-y:auto;
}
.brand{display:flex;align-items:center;gap:10px;padding:0 6px 20px;border-bottom:1px solid var(--c-line);margin-bottom:14px}
.brand-mark{
  width:38px;height:38px;flex:0 0 38px;border-radius:12px;
  background:var(--grad-heat);color:#fff;
  display:grid;place-items:center;font-size:18px;font-weight:800;
  box-shadow:0 6px 16px rgba(255,90,43,.32);
}
.brand-text{display:flex;flex-direction:column;min-width:0}
.brand-text strong{font-size:15px;color:var(--c-ink);font-weight:800;letter-spacing:0;white-space:nowrap}
.brand-text small{font-size:11px;color:var(--c-muted);line-height:1.5}
.side-nav{display:flex;flex-direction:column;gap:6px}
.nav-item{
  position:relative;display:flex;align-items:center;gap:12px;
  height:44px;padding:0 12px;border-radius:var(--r-sm);
  color:var(--c-body);font-size:14.5px;font-weight:500;
  transition:background .18s ease-out,color .18s ease-out;
}
.nav-item i{width:16px;font-size:15px;color:var(--c-muted);transition:color .18s ease-out}
.nav-item:hover{background:#F1EDE8;color:var(--c-ink)}
.nav-item:hover i{color:var(--c-primary)}
.nav-item.active{background:var(--c-primary-soft);color:var(--c-primary-d);font-weight:700}
.nav-item.active i{color:var(--c-primary-d)}
.nav-item.active::before{
  content:"";position:absolute;left:0;top:10px;bottom:10px;width:4px;
  border-radius:0 4px 4px 0;background:var(--c-primary);
}
.side-foot{margin-top:auto;padding-top:22px}
.side-card-tip{
  background:#FBF8F5;border:1px solid var(--c-line);border-radius:var(--r-md);
  padding:14px;margin-bottom:12px;
}
.side-card-tip p{font-size:12.5px;line-height:1.7;color:var(--c-muted)}

/* ============ 移动端顶栏 ============ */
.topbar{
  display:none;position:fixed;top:0;left:0;right:0;height:56px;z-index:70;
  background:rgba(255,255,255,.96);backdrop-filter:blur(8px);
  border-bottom:1px solid var(--c-line);
  align-items:center;justify-content:space-between;padding:0 14px;
}
.topbar-brand{display:flex;align-items:center;gap:8px;font-weight:800;color:var(--c-ink);font-size:15px}
.topbar-brand .brand-mark{width:30px;height:30px;flex:0 0 30px;border-radius:9px;font-size:15px}
.icon-btn{
  width:44px;height:44px;border-radius:var(--r-sm);border:1px solid var(--c-line);
  background:#fff;color:var(--c-ink);display:grid;place-items:center;font-size:16px;cursor:pointer;
  transition:background .18s ease-out,color .18s ease-out;
}
.icon-btn:hover{background:var(--c-primary-soft);color:var(--c-primary-d)}
.drawer-mask{
  position:fixed;inset:0;background:rgba(20,16,25,.55);z-index:55;
  opacity:0;visibility:hidden;transition:opacity .22s ease-out,visibility .22s ease-out;
}
.drawer-mask.show{opacity:1;visibility:visible}

/* ============ 主区域 ============ */
.main{margin-left:var(--sidebar-w);min-height:100vh;display:flex;flex-direction:column}
.article-page{flex:1 1 auto;padding:32px 0 72px;width:100%}

/* ============ 文章头部 ============ */
.article-hero{
  position:relative;overflow:hidden;border-radius:var(--r-lg);
  padding:44px 40px 40px;
  background:linear-gradient(135deg,#1A1720,#26222E);
  box-shadow:var(--sh-2);
}
.article-hero::before{
  content:"";position:absolute;inset:0;
  background:url('/assets/images/backpic/back-3.png') center/cover no-repeat;
  opacity:.3;
}
.article-hero::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(120deg,#FF5A2B 0%,#FFC93C 100%);
  opacity:.12;
}
.article-hero-inner{position:relative;z-index:2;max-width:840px}
.article-hero h1{
  color:#fff;font-size:40px;line-height:1.3;font-weight:800;
  margin:16px 0 18px;letter-spacing:0;
}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  height:24px;padding:0 11px;border-radius:var(--r-pill);
  font-size:12px;font-weight:600;line-height:1;
}
.badge-cat{background:var(--c-second-soft);color:var(--c-second)}
.badge-on-dark{background:rgba(255,255,255,.14);color:#FFD9CB;border:1px solid rgba(255,255,255,.18)}
.article-meta{display:flex;flex-wrap:wrap;gap:10px 22px;font-size:13px;color:#B9B2C4}
.article-meta span{display:inline-flex;align-items:center;gap:7px}
.article-meta i{color:var(--c-accent);font-size:12px}

/* ============ 面包屑 ============ */
.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:9px;
  font-size:13px;color:var(--c-muted);margin:20px 0 0;padding:0 2px;
}
.breadcrumb a{color:var(--c-muted);transition:color .18s ease-out}
.breadcrumb a:hover{color:var(--c-primary-d)}
.breadcrumb .sep{color:#C9C3CC}
.breadcrumb .current{color:var(--c-ink);font-weight:500;max-width:340px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

/* ============ 文章栅格 ============ */
.article-grid{
  display:grid;grid-template-columns:minmax(0,1fr);gap:48px;
  margin-top:32px;
}
.article-main{max-width:820px;width:100%;margin:0 auto;min-width:0}
.entry-card{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-lg);
  padding:40px;box-shadow:var(--sh-1);
}

/* ============ 正文排版 ============ */
.entry-content{max-width:760px;font-size:16px;line-height:1.85;color:var(--c-body);word-wrap:break-word}
.entry-content > *:first-child{margin-top:0}
.entry-content p{margin:0 0 1.2em}
.entry-content h2{
  font-size:32px;line-height:1.35;font-weight:700;color:var(--c-ink);
  margin:40px 0 18px;padding-left:16px;border-left:4px solid var(--c-primary);
}
.entry-content h3{font-size:20px;line-height:1.5;font-weight:600;color:var(--c-ink);margin:30px 0 12px}
.entry-content h4{font-size:17px;font-weight:600;color:var(--c-ink);margin:24px 0 10px}
.entry-content ul,.entry-content ol{margin:0 0 1.2em;padding-left:1.5em}
.entry-content li{margin-bottom:.5em}
.entry-content blockquote{
  margin:24px 0;padding:16px 20px;
  background:var(--c-primary-soft);border-left:3px solid var(--c-primary);
  border-radius:0 var(--r-sm) var(--r-sm) 0;color:var(--c-ink);
}
.entry-content blockquote p:last-child{margin-bottom:0}
.entry-content img{border-radius:var(--r-md);margin:24px auto;height:auto}
.entry-content a{color:var(--c-primary-d);text-decoration:underline;text-underline-offset:3px}
.entry-content a:hover{color:var(--c-primary)}
.entry-content hr{border:0;border-top:1px solid var(--c-line);margin:32px 0}
.entry-content table{
  display:block;width:100%;overflow-x:auto;border-collapse:collapse;
  font-size:15px;margin:24px 0;
}
.entry-content th,.entry-content td{border:1px solid var(--c-line);padding:11px 15px;text-align:left;white-space:nowrap}
.entry-content th{background:#F3EFE9;color:var(--c-ink);font-weight:600}
.entry-content tbody tr:nth-child(even){background:#FAF8F5}
.entry-content code{background:#F3EFE9;border-radius:6px;padding:2px 6px;font-size:14px}

/* ============ 空态 ============ */
.entry-empty{
  text-align:center;padding:56px 24px;
  border:1px dashed var(--c-line);border-radius:var(--r-lg);
  background:#FBF9F6;
}
.entry-empty i{font-size:34px;color:#CFC8BF;margin-bottom:14px;display:block}
.entry-empty h2{font-size:22px;margin-bottom:10px;padding:0;border:0}
.entry-empty p{font-size:14.5px;color:var(--c-muted);max-width:420px;margin:0 auto 20px}

/* ============ 相关推荐 ============ */
.related{margin-top:56px}
.section-head{
  display:flex;align-items:flex-end;justify-content:space-between;gap:16px;
  margin-bottom:22px;
}
.section-head h2{font-size:24px;font-weight:700}
.section-head p{font-size:13px;color:var(--c-muted);margin-top:6px}
.link-more{font-size:13.5px;font-weight:600;color:var(--c-primary-d);display:inline-flex;align-items:center;gap:6px}
.link-more:hover{color:var(--c-primary)}
.link-more i{font-size:11px;transition:transform .18s ease-out}
.link-more:hover i{transform:translateX(3px)}
.card-grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.card{
  display:flex;flex-direction:column;overflow:hidden;
  background:var(--c-surface);border:1px solid var(--c-line);
  border-radius:var(--r-md);box-shadow:var(--sh-1);
  transition:border-color .2s ease-out,box-shadow .2s ease-out,transform .2s ease-out;
}
.card:hover{border-color:var(--c-primary-soft);box-shadow:var(--sh-2);transform:translateY(-2px)}
.card-media{aspect-ratio:16/9;overflow:hidden;background:#EFEAE4}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform .24s ease-out}
.card:hover .card-media img{transform:scale(1.03)}
.card-body{padding:16px 18px 18px;display:flex;flex-direction:column;flex:1 1 auto}
.card-title{
  font-size:16px;font-weight:700;color:var(--c-ink);line-height:1.5;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.card-desc{
  font-size:13.5px;line-height:1.75;color:var(--c-muted);margin-top:8px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.card-foot{
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  margin-top:auto;padding-top:14px;border-top:1px solid var(--c-line);margin-top:16px;
}
.card-time{font-size:12.5px;color:var(--c-muted)}

/* ============ 返回入口 ============ */
.back-row{margin-top:36px;display:flex;justify-content:center}
.link-back{
  display:inline-flex;align-items:center;gap:8px;
  height:44px;padding:0 22px;border-radius:var(--r-sm);
  background:#fff;border:1px solid var(--c-line);color:var(--c-ink);
  font-size:14px;font-weight:600;
  transition:border-color .18s ease-out,color .18s ease-out,transform .18s ease-out;
}
.link-back:hover{border-color:var(--c-primary);color:var(--c-primary-d);transform:translateY(-1px)}

/* ============ 文章侧栏 ============ */
.article-side{display:none}
@media (min-width:1280px){
  .article-grid{grid-template-columns:minmax(0,1fr) 260px}
  .article-side{display:block;position:sticky;top:28px;align-self:start}
}
.side-panel{
  background:var(--c-surface);border:1px solid var(--c-line);
  border-radius:var(--r-md);padding:18px;box-shadow:var(--sh-1);margin-bottom:20px;
}
.side-panel h3{font-size:15px;font-weight:700;margin-bottom:12px}
.side-panel a.side-link{
  display:flex;align-items:center;gap:9px;
  height:40px;padding:0 10px;border-radius:10px;
  font-size:13.5px;color:var(--c-body);
  transition:background .18s ease-out,color .18s ease-out;
}
.side-panel a.side-link i{font-size:13px;color:var(--c-muted)}
.side-panel a.side-link:hover{background:#F1EDE8;color:var(--c-primary-d)}
.side-panel a.side-link:hover i{color:var(--c-primary-d)}
.side-panel.heat{background:linear-gradient(135deg,#1A1720,#26222E);border-color:rgba(255,255,255,.1)}
.side-panel.heat h3{color:#fff}
.side-panel.heat p{font-size:13px;line-height:1.75;color:#B9B2C4;margin-bottom:14px}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 22px;border-radius:var(--r-sm);
  font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;
  transition:background .18s ease-out,color .18s ease-out,transform .18s ease-out,box-shadow .18s ease-out,border-color .18s ease-out;
}
.btn-primary{background:var(--c-primary);color:#fff;box-shadow:0 6px 16px rgba(255,90,43,.28)}
.btn-primary:hover{background:var(--c-primary-d);transform:translateY(-1px);box-shadow:var(--sh-2)}
.btn-primary:active{transform:translateY(0)}
.btn-block{width:100%}

/* ============ 页脚 ============ */
.site-footer{background:var(--c-ink);color:#CFC9D6;padding:56px 0 24px;margin-top:auto}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:32px}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px}
.footer-brand strong{color:#fff;font-size:16px;font-weight:800}
.footer-brand .brand-mark{width:34px;height:34px;flex:0 0 34px;border-radius:10px;font-size:16px;box-shadow:none}
.footer-desc{font-size:14px;line-height:1.9;color:#9E98A8;max-width:330px}
.footer-col h4{color:#fff;font-size:14px;font-weight:600;margin-bottom:14px}
.footer-col a{display:block;color:#B7B1C0;font-size:14px;line-height:1.9;transition:color .18s ease-out}
.footer-col a:hover{color:#fff}
.footer-col p{font-size:14px;line-height:1.9;color:#9E98A8;margin-bottom:8px}
.footer-bottom{
  display:flex;justify-content:space-between;align-items:center;gap:12px;flex-wrap:wrap;
  border-top:1px solid rgba(255,255,255,.1);
  margin-top:40px;padding-top:18px;font-size:13px;color:#8B8595;
}

/* ============ 响应式 ============ */
@media (min-width:1024px){
  .topbar{display:none!important}
}
@media (max-width:1279px){
  :root{--sidebar-w:216px}
}
@media (max-width:1023px){
  .sidebar{
    width:280px;padding-top:18px;
    transform:translateX(-100%);
    transition:transform .24s ease-out;
    box-shadow:none;
  }
  .sidebar.open{transform:translateX(0);box-shadow:var(--sh-2)}
  .topbar{display:flex}
  .main{margin-left:0;padding-top:56px}
  .container{padding:0 24px}
  .article-hero{padding:36px 28px 32px}
  .article-hero h1{font-size:32px}
  .card-grid-3{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
  .footer-desc{max-width:100%}
}
@media (max-width:767px){
  .container{padding:0 16px}
  .article-page{padding:20px 0 48px}
  .article-hero{padding:28px 20px 26px;border-radius:var(--r-md)}
  .article-hero h1{font-size:26px;margin:12px 0 14px}
  .article-meta{gap:8px 16px;font-size:12.5px}
  .breadcrumb{margin-top:16px}
  .breadcrumb .current{max-width:180px}
  .article-grid{margin-top:22px;gap:36px}
  .entry-card{padding:22px 18px;border-radius:var(--r-md)}
  .entry-content{font-size:16px;line-height:1.85}
  .entry-content h2{font-size:24px;margin:32px 0 14px}
  .entry-content h3{font-size:18px}
  .card-grid-3{grid-template-columns:1fr}
  .section-head{flex-direction:column;align-items:flex-start;gap:8px}
  .section-head h2{font-size:21px}
  .footer-grid{grid-template-columns:1fr;gap:24px}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:6px}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;scroll-behavior:auto!important}
}

/* roulang page: category3 */
:root{
  --c-primary:#FF5A2B;
  --c-primary-d:#E0431A;
  --c-primary-soft:#FFE7DE;
  --c-second:#12B5A6;
  --c-second-soft:#DFF7F3;
  --c-accent:#FFC93C;
  --c-ink:#16141B;
  --c-ink-2:#26222E;
  --c-body:#4A4653;
  --c-muted:#7C7787;
  --c-bg:#F7F5F2;
  --c-surface:#FFFFFF;
  --c-line:#E7E2DA;
  --grad-heat:linear-gradient(120deg,#FF5A2B,#FFC93C);
  --sh-1:0 1px 2px rgba(22,20,27,.06),0 8px 24px rgba(22,20,27,.06);
  --sh-2:0 12px 32px rgba(22,20,27,.10);
  --r-8:8px;--r-12:12px;--r-16:16px;--r-24:24px;--r-pill:999px;
  --sidebar-w:240px;
  --sec-gap:72px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
  font-size:16px;line-height:1.75;color:var(--c-body);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0;}
a{color:var(--c-primary-d);text-decoration:none;transition:color .18s ease-out;}
a:hover{color:var(--c-primary);}
button,input,textarea,select{font:inherit;color:inherit;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{margin:0;color:var(--c-ink);letter-spacing:0;}
p{margin:0;}
:focus-visible{outline:2px solid var(--c-second);outline-offset:2px;border-radius:6px;}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px;}

/* ---------- 布局骨架 ---------- */
.app-body{min-height:100vh;}
.sidebar{
  position:fixed;top:0;left:0;bottom:0;width:var(--sidebar-w);
  background:var(--c-surface);border-right:1px solid var(--c-line);
  display:flex;flex-direction:column;padding:24px 16px 20px;z-index:80;
  transition:transform .22s ease-out;
}
.app-main{margin-left:var(--sidebar-w);min-height:100vh;display:flex;flex-direction:column;}
.app-main > main{flex:1;}

/* ---------- 侧栏 ---------- */
.brand{
  display:flex;align-items:center;gap:10px;padding:4px 8px 20px;
  border-bottom:1px solid var(--c-line);margin-bottom:16px;
}
.brand-mark{
  width:38px;height:38px;flex:0 0 38px;border-radius:12px;
  background:var(--grad-heat);color:#fff;font-weight:800;font-size:19px;
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 6px 16px rgba(255,90,43,.28);
}
.brand-text{display:flex;flex-direction:column;line-height:1.25;}
.brand-text strong{font-size:15px;font-weight:800;color:var(--c-ink);}
.brand-text span{font-size:11px;color:var(--c-muted);letter-spacing:.4px;}

.side-nav{display:flex;flex-direction:column;gap:4px;}
.nav-item{
  display:flex;align-items:center;gap:10px;height:44px;padding:0 12px;
  border-radius:var(--r-12);color:var(--c-body);font-size:14px;font-weight:500;
  position:relative;transition:background .18s ease-out,color .18s ease-out;
}
.nav-item i{width:16px;font-size:15px;color:var(--c-muted);transition:color .18s ease-out;}
.nav-item:hover{background:#F1EDE8;color:var(--c-ink);}
.nav-item:hover i{color:var(--c-primary);}
.nav-item.active{
  background:var(--c-primary-soft);color:var(--c-primary-d);font-weight:700;
}
.nav-item.active::before{
  content:"";position:absolute;left:0;top:9px;bottom:9px;width:4px;
  border-radius:var(--r-pill);background:var(--c-primary);
}
.nav-item.active i{color:var(--c-primary-d);}

.side-divider{height:1px;background:var(--c-line);margin:16px 4px;}
.side-foot{margin-top:auto;padding-top:16px;border-top:1px solid var(--c-line);}
.side-foot p{font-size:12px;color:var(--c-muted);line-height:1.7;margin-bottom:12px;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;border-radius:var(--r-12);border:1px solid transparent;
  font-size:15px;font-weight:700;cursor:pointer;text-decoration:none;
  transition:background .18s ease-out,color .18s ease-out,transform .18s ease-out,box-shadow .18s ease-out,border-color .18s ease-out;
  white-space:nowrap;
}
.btn-primary{background:var(--c-primary);color:#fff;box-shadow:0 6px 16px rgba(255,90,43,.24);}
.btn-primary:hover{background:var(--c-primary-d);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-2);}
.btn-primary:active{transform:translateY(0);}
.btn-outline{background:var(--c-surface);color:var(--c-primary-d);border-color:var(--c-primary);}
.btn-outline:hover{background:var(--c-primary-soft);color:var(--c-primary-d);transform:translateY(-1px);box-shadow:var(--sh-2);}
.btn-outline:active{transform:translateY(0);}
.btn-ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.5);}
.btn-ghost:hover{background:rgba(255,255,255,.12);color:#fff;transform:translateY(-1px);}
.btn-ghost:active{transform:translateY(0);}
.btn-block{width:100%;}
.btn-sm{height:38px;padding:0 16px;font-size:13px;border-radius:var(--r-8);}
.link-more{
  font-size:14px;font-weight:700;color:var(--c-primary-d);
  display:inline-flex;align-items:center;gap:6px;
}
.link-more:hover{color:var(--c-primary);}

/* ---------- 顶部移动栏 ---------- */
.topbar{
  display:none;position:sticky;top:0;z-index:90;height:56px;
  background:var(--c-surface);border-bottom:1px solid var(--c-line);
  align-items:center;justify-content:space-between;padding:0 14px;
}
.topbar .tb-left{display:flex;align-items:center;gap:10px;}
.tb-toggle{
  width:40px;height:40px;border-radius:var(--r-12);border:1px solid var(--c-line);
  background:var(--c-surface);display:flex;align-items:center;justify-content:center;
  color:var(--c-ink);font-size:16px;cursor:pointer;
}
.tb-toggle:hover{background:#F1EDE8;}
.tb-brand{font-size:15px;font-weight:800;color:var(--c-ink);}
.tb-cta{
  width:40px;height:40px;border-radius:var(--r-12);background:var(--c-primary);
  color:#fff;display:flex;align-items:center;justify-content:center;font-size:15px;
}
.tb-cta:hover{background:var(--c-primary-d);color:#fff;}
.drawer-mask{
  display:none;position:fixed;inset:0;background:rgba(20,16,25,.55);z-index:95;
  opacity:0;transition:opacity .2s ease-out;
}
.drawer-mask.show{display:block;opacity:1;}

/* ---------- 面包屑 ---------- */
.crumb{
  font-size:13px;font-weight:500;display:flex;align-items:center;gap:8px;flex-wrap:wrap;
}
.crumb span.sep{opacity:.55;}

/* ---------- 页头 ---------- */
.page-hero{
  position:relative;overflow:hidden;color:#fff;
  background:var(--c-ink) url(/assets/images/backpic/back-1.png) center/cover no-repeat;
  padding:32px 0 64px;
}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background:radial-gradient(120% 110% at 18% 0%,rgba(22,20,27,.94) 0%,rgba(22,20,27,.72) 42%,rgba(22,20,27,.9) 100%);
}
.page-hero::after{
  content:"";position:absolute;inset:-20% -10%;
  background:linear-gradient(45deg,rgba(255,90,43,.14),rgba(255,201,60,.10) 45%,rgba(255,90,43,0) 75%);
  pointer-events:none;
}
.page-hero .container{position:relative;z-index:2;}
.page-hero .crumb{color:rgba(255,255,255,.72);margin-bottom:26px;}
.page-hero .crumb a{color:rgba(255,255,255,.72);}
.page-hero .crumb a:hover{color:#fff;}
.page-hero .crumb .current{color:#fff;}

.hero-inner{max-width:780px;}
.hero-tag{
  display:inline-flex;align-items:center;gap:8px;height:28px;padding:0 14px;
  border-radius:var(--r-pill);background:rgba(255,255,255,.12);
  border:1px solid rgba(255,255,255,.18);font-size:12px;font-weight:600;color:#fff;
  margin-bottom:18px;
}
.hero-tag i{color:var(--c-accent);}
.page-hero h1{
  color:#fff;font-size:44px;line-height:1.18;font-weight:800;
}
.page-hero .hero-sub{
  margin-top:14px;font-size:17px;color:rgba(255,255,255,.82);font-weight:500;
}
.hero-meta{
  display:flex;flex-wrap:wrap;gap:10px 26px;margin-top:24px;
}
.hero-meta li{
  display:flex;align-items:center;gap:8px;font-size:13px;font-weight:600;
  color:rgba(255,255,255,.86);
}
.hero-meta li i{color:var(--c-second);font-size:14px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:30px;}

/* ---------- 通用板块 ---------- */
.section{padding:var(--sec-gap) 0 0;}
.section:last-of-type{padding-bottom:var(--sec-gap);}
.section-head{max-width:760px;margin-bottom:32px;}
.section-head h2{font-size:32px;line-height:1.25;font-weight:700;}
.section-head p{margin-top:12px;font-size:16px;color:var(--c-muted);}
.section-head .eyebrow{
  display:inline-block;font-size:12px;font-weight:700;letter-spacing:1px;
  color:var(--c-primary-d);background:var(--c-primary-soft);
  padding:4px 12px;border-radius:var(--r-pill);margin-bottom:14px;
}
.head-row{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;flex-wrap:wrap;}

/* ---------- 简介 ---------- */
.intro-grid{display:grid;grid-template-columns:1.35fr 1fr;gap:40px;align-items:start;}
.intro-text p{
  font-size:16px;line-height:1.9;color:var(--c-body);margin-bottom:18px;
}
.intro-text p:last-child{margin-bottom:0;}
.intro-panel{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-16);
  padding:26px;box-shadow:var(--sh-1);
}
.intro-panel h3{font-size:18px;font-weight:700;margin-bottom:16px;}
.intro-list li{
  display:flex;gap:12px;padding:12px 0;border-bottom:1px dashed var(--c-line);font-size:14px;
}
.intro-list li:last-child{border-bottom:0;padding-bottom:0;}
.intro-list i{color:var(--c-second);font-size:15px;margin-top:3px;}

/* ---------- 数据条 ---------- */
.stats{
  display:grid;grid-template-columns:repeat(4,1fr);gap:20px;
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-16);
  padding:26px 24px;box-shadow:var(--sh-1);
}
.stat b{
  display:block;font-size:30px;line-height:1.2;font-weight:800;
  background:var(--grad-heat);-webkit-background-clip:text;background-clip:text;color:transparent;
}
.stat span{display:block;margin-top:6px;font-size:13px;color:var(--c-muted);font-weight:500;}

/* ---------- 图文交替 ---------- */
.feature{
  display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center;
}
.feature + .feature{margin-top:64px;}
.feature-media{
  border-radius:var(--r-24);overflow:hidden;border:1px solid var(--c-line);
  box-shadow:var(--sh-1);background:var(--c-surface);
}
.feature-media img{width:100%;aspect-ratio:16/11;object-fit:cover;transition:transform .24s ease-out;}
.feature-media:hover img{transform:scale(1.03);}
.feature-body .badge{margin-bottom:16px;}
.feature-body h2{font-size:30px;line-height:1.3;font-weight:700;margin-bottom:14px;}
.feature-body > p{font-size:16px;line-height:1.9;margin-bottom:18px;}
.feature--reverse .feature-media{order:2;}
.feature--reverse .feature-body{order:1;}

.check-list li{
  display:flex;gap:12px;font-size:15px;padding:9px 0;color:var(--c-body);
}
.check-list i{
  flex:0 0 22px;width:22px;height:22px;border-radius:var(--r-pill);
  background:var(--c-second-soft);color:var(--c-second);font-size:11px;
  display:flex;align-items:center;justify-content:center;margin-top:4px;
}

/* ---------- 徽章 ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;height:24px;padding:0 11px;
  border-radius:var(--r-pill);font-size:12px;font-weight:700;
}
.badge-second{background:var(--c-second-soft);color:var(--c-second);}
.badge-heat{background:var(--c-primary-soft);color:var(--c-primary-d);}
.badge-accent{background:rgba(255,201,60,.22);color:#9A6B00;}
.badge-muted{background:#F1EDE8;color:var(--c-muted);}

/* ---------- 卡片网格 ---------- */
.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.card{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-16);
  overflow:hidden;box-shadow:var(--sh-1);display:flex;flex-direction:column;
  transition:border-color .2s ease-out,box-shadow .2s ease-out,transform .2s ease-out;
}
.card:hover{border-color:var(--c-primary-soft);box-shadow:var(--sh-2);transform:translateY(-2px);}
.card-media{overflow:hidden;background:#EFEAE4;}
.card-media img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .2s ease-out;}
.card:hover .card-media img{transform:scale(1.03);}
.card-body{padding:20px 20px 18px;display:flex;flex-direction:column;flex:1;}
.card-body h3{font-size:18px;font-weight:700;line-height:1.45;margin-bottom:10px;}
.card-body p{font-size:14px;line-height:1.8;color:var(--c-muted);flex:1;}
.card-foot{
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  margin-top:16px;padding-top:14px;border-top:1px solid var(--c-line);
  font-size:12px;color:var(--c-muted);font-weight:600;
}
.card-top{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-bottom:12px;}

/* ---------- FAQ ---------- */
.faq-wrap{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-16);
  box-shadow:var(--sh-1);overflow:hidden;
}
.faq-item{border-bottom:1px solid var(--c-line);}
.faq-item:last-child{border-bottom:0;}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;
  gap:16px;padding:20px 24px;font-size:16px;font-weight:600;color:var(--c-ink);
  transition:background .16s ease-out;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary:hover{background:#FBF9F6;}
.faq-icon{
  flex:0 0 26px;width:26px;height:26px;border-radius:var(--r-pill);
  background:var(--c-primary-soft);color:var(--c-primary-d);
  display:flex;align-items:center;justify-content:center;font-size:12px;
  transition:transform .2s ease-out;
}
.faq-item[open] .faq-icon{transform:rotate(45deg);background:var(--c-primary);color:#fff;}
.faq-answer{padding:0 24px 22px;font-size:15px;line-height:1.85;color:var(--c-body);}

/* ---------- CTA 条 ---------- */
.cta-band{
  position:relative;overflow:hidden;border-radius:var(--r-24);
  background:var(--c-ink);color:#fff;padding:44px 40px;
  display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;
}
.cta-band::after{
  content:"";position:absolute;inset:0;
  background-image:repeating-linear-gradient(135deg,rgba(255,255,255,.05) 0 1px,transparent 1px 14px);
  pointer-events:none;
}
.cta-band > *{position:relative;z-index:2;}
.cta-band h2{color:#fff;font-size:28px;line-height:1.3;font-weight:700;}
.cta-band p{margin-top:10px;font-size:15px;color:rgba(255,255,255,.75);max-width:560px;}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--c-ink);color:rgba(255,255,255,.72);margin-top:var(--sec-gap);}
.footer-grid{
  display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:36px;
  padding:56px 0 40px;
}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px;}
.footer-brand .brand-mark{width:34px;height:34px;flex:0 0 34px;font-size:17px;}
.footer-brand strong{color:#fff;font-size:16px;font-weight:800;}
.footer-desc{font-size:13px;line-height:1.85;color:rgba(255,255,255,.62);max-width:320px;}
.footer-col h4{
  color:#fff;font-size:14px;font-weight:600;margin:0 0 14px;
}
.footer-col a{
  display:block;font-size:14px;line-height:1.9;color:rgba(255,255,255,.66);
  transition:color .16s ease-out;
}
.footer-col a:hover{color:#fff;}
.footer-col p{font-size:13px;line-height:1.9;color:rgba(255,255,255,.6);margin-bottom:8px;}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:14px;flex-wrap:wrap;
  border-top:1px solid rgba(255,255,255,.1);padding:20px 0 26px;
  font-size:13px;color:rgba(255,255,255,.55);
}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  :root{--sidebar-w:216px;--sec-gap:56px;}
  .card-grid{grid-template-columns:repeat(2,1fr);}
  .page-hero h1{font-size:38px;}
  .feature-body h2{font-size:26px;}
}
@media (max-width:1023px){
  :root{--sec-gap:56px;}
  .topbar{display:flex;}
  .sidebar{transform:translateX(-100%);width:280px;box-shadow:var(--sh-2);}
  .sidebar.open{transform:translateX(0);}
  .app-main{margin-left:0;}
  .container{padding:0 24px;}
  .intro-grid{grid-template-columns:1fr;gap:28px;}
  .stats{grid-template-columns:repeat(2,1fr);}
  .feature{grid-template-columns:1fr;gap:26px;}
  .feature--reverse .feature-media{order:1;}
  .feature--reverse .feature-body{order:2;}
  .page-hero{padding:24px 0 52px;}
  .page-hero h1{font-size:32px;}
  .section-head h2{font-size:26px;}
  .features-stack .feature + .feature{margin-top:48px;}
}
@media (max-width:767px){
  :root{--sec-gap:40px;}
  .container{padding:0 16px;}
  .card-grid{grid-template-columns:1fr;}
  .page-hero h1{font-size:30px;line-height:1.28;}
  .page-hero .hero-sub{font-size:15px;}
  .section-head h2{font-size:24px;}
  .feature-body h2{font-size:22px;}
  .stats{grid-template-columns:1fr 1fr;gap:16px;padding:20px 18px;}
  .stat b{font-size:25px;}
  .faq-item summary{padding:16px 18px;font-size:15px;}
  .faq-answer{padding:0 18px 18px;font-size:14px;}
  .cta-band{padding:30px 22px;border-radius:var(--r-16);}
  .cta-band h2{font-size:22px;}
  .cta-actions{width:100%;}
  .cta-actions .btn{flex:1 1 100%;}
  .footer-grid{grid-template-columns:1fr;gap:26px;padding:40px 0 28px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .btn{min-height:44px;}
  .hero-actions .btn{flex:1 1 100%;}
  .intro-panel{padding:20px;}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important;}
  html{scroll-behavior:auto;}
}

/* roulang page: category4 */
:root{
  --c-primary:#FF5A2B;
  --c-primary-d:#E0431A;
  --c-primary-soft:#FFE7DE;
  --c-second:#12B5A6;
  --c-second-soft:#DFF7F3;
  --c-accent:#FFC93C;
  --c-ink:#16141B;
  --c-ink-2:#26222E;
  --c-body:#4A4653;
  --c-muted:#7C7787;
  --c-bg:#F7F5F2;
  --c-surface:#FFFFFF;
  --c-line:#E7E2DA;
  --c-hover:#F1EDE8;
  --grad-heat:linear-gradient(120deg,#FF5A2B,#FFC93C);
  --r-8:8px;--r-12:12px;--r-16:16px;--r-24:24px;--r-pill:999px;
  --sh-1:0 1px 2px rgba(22,20,27,.06),0 8px 24px rgba(22,20,27,.06);
  --sh-2:0 12px 32px rgba(22,20,27,.10);
  --sidebar-w:240px;
  --sec-gap:72px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
  font-size:16px;line-height:1.75;color:var(--c-body);background:var(--c-bg);
}
img{max-width:100%;display:block;}
a{color:var(--c-primary);text-decoration:none;transition:color .2s ease-out;}
a:hover{color:var(--c-primary-d);}
button{font-family:inherit;cursor:pointer;}
h1,h2,h3,h4{color:var(--c-ink);margin:0;font-weight:700;}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--c-second);outline-offset:2px;border-radius:6px;}

/* ---------- 布局骨架 ---------- */
.app{min-height:100vh;}
.sidebar{
  position:fixed;top:0;left:0;bottom:0;width:var(--sidebar-w);
  background:var(--c-surface);border-right:1px solid var(--c-line);
  display:flex;flex-direction:column;padding:24px 16px 20px;z-index:80;
  transition:transform .24s ease-out;
}
.side-brand{display:flex;align-items:center;gap:10px;padding:0 8px 20px;border-bottom:1px solid var(--c-line);margin-bottom:18px;}
.brand-mark{
  width:38px;height:38px;flex:0 0 38px;border-radius:var(--r-12);
  background:var(--grad-heat);color:#fff;font-weight:800;font-size:18px;
  display:flex;align-items:center;justify-content:center;
}
.brand-text{display:flex;flex-direction:column;line-height:1.25;}
.brand-text strong{font-size:15px;color:var(--c-ink);font-weight:800;}
.brand-text span{font-size:11px;color:var(--c-muted);letter-spacing:.04em;}
.side-nav{display:flex;flex-direction:column;gap:6px;}
.nav-item{
  display:flex;align-items:center;gap:10px;height:44px;padding:0 12px;
  border-radius:var(--r-12);color:var(--c-body);font-size:14.5px;font-weight:500;
  position:relative;transition:background .18s ease-out,color .18s ease-out;
}
.nav-item i{width:18px;text-align:center;font-size:15px;color:var(--c-muted);transition:color .18s ease-out;}
.nav-item:hover{background:var(--c-hover);color:var(--c-ink);}
.nav-item:hover i{color:var(--c-primary);}
.nav-item.active{background:var(--c-primary-soft);color:var(--c-primary-d);font-weight:600;}
.nav-item.active i{color:var(--c-primary-d);}
.nav-item.active::before{
  content:"";position:absolute;left:0;top:10px;bottom:10px;width:4px;
  border-radius:var(--r-pill);background:var(--c-primary);
}
.side-foot{margin-top:auto;padding-top:18px;border-top:1px solid var(--c-line);}
.side-foot p{font-size:12px;color:var(--c-muted);line-height:1.7;margin-bottom:12px;}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 20px;border-radius:var(--r-12);border:1px solid transparent;
  font-size:15px;font-weight:600;transition:transform .18s ease-out,box-shadow .18s ease-out,background .18s ease-out,color .18s ease-out;
}
.btn-primary{background:var(--c-primary);color:#fff;box-shadow:var(--sh-1);}
.btn-primary:hover{background:var(--c-primary-d);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-2);}
.btn-primary:active{transform:translateY(0);}
.btn-outline{background:var(--c-surface);color:var(--c-primary);border-color:var(--c-primary);}
.btn-outline:hover{background:var(--c-primary-soft);color:var(--c-primary-d);transform:translateY(-1px);}
.btn-ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.45);}
.btn-ghost:hover{background:rgba(255,255,255,.12);color:#fff;transform:translateY(-1px);}
.btn-block{width:100%;}
.btn-text{
  display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;
  color:var(--c-primary);background:none;border:none;padding:4px 2px;
}
.btn-text:hover{color:var(--c-primary-d);}
.btn-text i{font-size:12px;}

.topbar{
  display:none;position:fixed;top:0;left:0;right:0;height:56px;z-index:90;
  background:rgba(255,255,255,.96);backdrop-filter:blur(8px);
  border-bottom:1px solid var(--c-line);align-items:center;gap:12px;padding:0 14px;
}
.topbar .hamburger{
  width:40px;height:40px;border-radius:var(--r-12);border:1px solid var(--c-line);
  background:var(--c-surface);color:var(--c-ink);font-size:16px;display:flex;align-items:center;justify-content:center;
}
.topbar .topbar-brand{font-size:15px;font-weight:800;color:var(--c-ink);display:flex;align-items:center;gap:8px;}
.topbar .topbar-cta{
  margin-left:auto;width:40px;height:40px;border-radius:var(--r-12);
  background:var(--c-primary);color:#fff;display:flex;align-items:center;justify-content:center;font-size:15px;
}
.overlay{
  display:none;position:fixed;inset:0;background:rgba(20,16,25,.55);z-index:70;
}
.overlay.show{display:block;}

.main{margin-left:var(--sidebar-w);}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px;}
.section{padding:var(--sec-gap) 0 0;}

/* ---------- 面包屑 ---------- */
.breadcrumb{padding:28px 0 0;font-size:13px;color:var(--c-muted);display:flex;flex-wrap:wrap;gap:6px;align-items:center;}
.breadcrumb a{color:var(--c-muted);}
.breadcrumb a:hover{color:var(--c-primary);}
.breadcrumb .sep{color:#C6C0B8;}
.breadcrumb .current{color:var(--c-ink);font-weight:500;}

/* ---------- 页头 ---------- */
.page-hero{
  position:relative;margin-top:20px;border-radius:var(--r-24);overflow:hidden;
  background-image:url("/assets/images/backpic/back-1.png");
  background-size:cover;background-position:center;
  border:1px solid var(--c-line);
}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background:
    linear-gradient(45deg,rgba(255,90,43,.14),rgba(255,201,60,.14)),
    radial-gradient(120% 120% at 12% 20%,rgba(22,20,27,.94),rgba(22,20,27,.72) 55%,rgba(22,20,27,.55));
}
.page-hero-inner{position:relative;z-index:2;padding:56px 48px 52px;max-width:760px;}
.hero-tag{
  display:inline-flex;align-items:center;gap:8px;height:26px;padding:0 12px;border-radius:var(--r-pill);
  background:rgba(255,90,43,.22);border:1px solid rgba(255,255,255,.22);
  color:#FFD9CB;font-size:12px;font-weight:600;letter-spacing:.04em;margin-bottom:18px;
}
.page-hero h1{
  color:#fff;font-size:44px;line-height:1.18;font-weight:800;letter-spacing:0;margin-bottom:14px;
}
.page-hero h1 em{font-style:normal;color:var(--c-accent);}
.hero-sub{font-size:17px;color:rgba(255,255,255,.86);line-height:1.7;margin-bottom:26px;}
.hero-chips{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:30px;}
.hero-chip{
  display:inline-flex;align-items:center;gap:7px;height:30px;padding:0 13px;border-radius:var(--r-pill);
  background:rgba(255,255,255,.10);border:1px solid rgba(255,255,255,.18);
  color:rgba(255,255,255,.9);font-size:13px;font-weight:500;
}
.hero-chip i{color:var(--c-accent);font-size:12px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;}

/* ---------- 简介 ---------- */
.intro-grid{display:grid;grid-template-columns:1.35fr 1fr;gap:32px;align-items:start;margin-top:44px;}
.intro-text p{font-size:16px;line-height:1.85;color:var(--c-body);margin-bottom:16px;max-width:40em;}
.intro-text p:last-child{margin-bottom:0;}
.intro-figure{
  border-radius:var(--r-24);overflow:hidden;border:1px solid var(--c-line);
  box-shadow:var(--sh-1);background:var(--c-surface);
}
.intro-figure img{width:100%;aspect-ratio:16/10;object-fit:cover;}
.intro-figure figcaption{
  padding:14px 18px;font-size:13px;color:var(--c-muted);border-top:1px solid var(--c-line);
}

/* ---------- 通用板块头 ---------- */
.sec-head{margin-bottom:34px;}
.sec-head .kicker{
  display:inline-block;font-size:12px;font-weight:700;letter-spacing:.14em;
  color:var(--c-second);text-transform:uppercase;margin-bottom:10px;
}
.sec-head h2{font-size:32px;line-height:1.3;font-weight:700;margin-bottom:10px;}
.sec-head p{font-size:15px;color:var(--c-muted);max-width:46em;}
.sec-head-row{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;flex-wrap:wrap;}

/* ---------- 编号要点 ---------- */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;}
.step{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-16);
  padding:26px 22px 24px;box-shadow:var(--sh-1);position:relative;
  transition:border-color .2s ease-out,transform .2s ease-out,box-shadow .2s ease-out;
}
.step:hover{border-color:var(--c-primary-soft);transform:translateY(-2px);box-shadow:var(--sh-2);}
.step-num{
  font-size:26px;font-weight:800;letter-spacing:.02em;margin-bottom:14px;
  background:var(--grad-heat);-webkit-background-clip:text;background-clip:text;color:transparent;
  display:block;line-height:1;
}
.step h3{font-size:18px;font-weight:600;margin-bottom:10px;}
.step p{font-size:14.5px;line-height:1.8;color:var(--c-muted);}

/* ---------- 对比表 ---------- */
.table-card{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-16);
  box-shadow:var(--sh-1);overflow:hidden;
}
.table-scroll{overflow-x:auto;}
table{width:100%;border-collapse:collapse;min-width:820px;}
caption{
  caption-side:top;text-align:left;padding:20px 24px 0;font-size:13px;color:var(--c-muted);
}
th,td{padding:16px 20px;text-align:left;font-size:14.5px;border-bottom:1px solid var(--c-line);vertical-align:top;}
th{background:#F1EDE8;color:var(--c-ink);font-weight:600;font-size:14px;white-space:nowrap;}
tbody tr:nth-child(even){background:#FBFAF8;}
tbody tr:last-child td{border-bottom:none;}
td strong{color:var(--c-ink);font-weight:600;}
.table-note{padding:16px 24px 20px;font-size:13px;color:var(--c-muted);border-top:1px solid var(--c-line);background:#FBFAF8;}

/* ---------- 卡片网格 ---------- */
.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.card{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-16);
  overflow:hidden;box-shadow:var(--sh-1);display:flex;flex-direction:column;
  transition:border-color .2s ease-out,transform .2s ease-out,box-shadow .2s ease-out;
}
.card:hover{border-color:var(--c-primary-soft);transform:translateY(-2px);box-shadow:var(--sh-2);}
.card-media{overflow:hidden;background:#EFEBE5;}
.card-media img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .2s ease-out;}
.card:hover .card-media img{transform:scale(1.03);}
.card-body{padding:22px 22px 20px;display:flex;flex-direction:column;flex:1;}
.badge{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:var(--r-pill);
  font-size:12px;font-weight:600;line-height:1;
}
.badge-cat{background:var(--c-second-soft);color:var(--c-second);}
.badge-rare{background:#FFF3D6;color:#A97400;}
.badge-time{background:#F1EDE8;color:var(--c-muted);}
.card-body h3{font-size:18px;font-weight:600;line-height:1.45;margin:12px 0 10px;}
.card-body p{font-size:14.5px;line-height:1.8;color:var(--c-muted);flex:1;}
.card-foot{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding:14px 22px;border-top:1px solid var(--c-line);
}
.card-foot span{font-size:13px;color:var(--c-muted);}

/* ---------- FAQ ---------- */
.faq-wrap{background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-16);box-shadow:var(--sh-1);overflow:hidden;}
.faq-item{border-bottom:1px solid var(--c-line);}
.faq-item:last-child{border-bottom:none;}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 24px;font-size:16px;font-weight:600;color:var(--c-ink);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary:hover{background:#FBFAF8;}
.faq-icon{
  flex:0 0 26px;width:26px;height:26px;border-radius:50%;background:#F1EDE8;color:var(--c-ink);
  display:flex;align-items:center;justify-content:center;font-size:12px;transition:background .2s ease-out,color .2s ease-out;
}
.faq-item[open] .faq-icon{background:var(--c-primary);color:#fff;}
.faq-answer{padding:0 24px 22px;font-size:15px;line-height:1.85;color:var(--c-body);}

/* ---------- CTA ---------- */
.cta-band{
  margin-top:var(--sec-gap);border-radius:var(--r-24);overflow:hidden;position:relative;
  background:var(--c-ink);border:1px solid rgba(255,255,255,.10);
}
.cta-band::before{
  content:"";position:absolute;inset:0;opacity:.5;
  background-image:radial-gradient(rgba(255,255,255,.14) 1px,transparent 1px);
  background-size:16px 16px;
}
.cta-inner{
  position:relative;z-index:2;padding:46px 48px;display:flex;align-items:center;
  justify-content:space-between;gap:32px;flex-wrap:wrap;
}
.cta-inner h2{color:#fff;font-size:28px;line-height:1.35;margin-bottom:10px;}
.cta-inner p{color:rgba(255,255,255,.72);font-size:15px;max-width:44em;}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap;}

/* ---------- 页脚 ---------- */
.site-footer{margin-top:var(--sec-gap);background:var(--c-ink-2);color:rgba(255,255,255,.72);}
.site-footer .container{padding-top:56px;padding-bottom:0;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:32px;padding-bottom:40px;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-brand .brand-mark{width:34px;height:34px;flex:0 0 34px;border-radius:var(--r-12);font-size:16px;}
.footer-brand strong{color:#fff;font-size:16px;font-weight:800;}
.footer-desc{font-size:13.5px;line-height:1.85;color:rgba(255,255,255,.6);}
.footer-col h4{color:#fff;font-size:14px;font-weight:600;margin-bottom:14px;}
.footer-col a{display:block;font-size:14px;line-height:1.9;color:rgba(255,255,255,.66);margin-bottom:6px;}
.footer-col a:hover{color:var(--c-accent);}
.footer-col p{font-size:13.5px;line-height:1.9;color:rgba(255,255,255,.6);margin-bottom:10px;}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:14px;flex-wrap:wrap;
  border-top:1px solid rgba(255,255,255,.10);padding:20px 0 26px;font-size:13px;color:rgba(255,255,255,.48);
}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  :root{--sidebar-w:216px;--sec-gap:60px;}
  .container{padding:0 26px;}
  .card-grid{grid-template-columns:repeat(2,1fr);}
  .steps{grid-template-columns:repeat(2,1fr);}
  .page-hero h1{font-size:38px;}
  .intro-grid{grid-template-columns:1fr 1fr;}
}
@media (max-width:1023px){
  :root{--sec-gap:56px;}
  .page-hero h1{font-size:34px;}
  .sec-head h2{font-size:28px;}
  .page-hero-inner{padding:44px 34px 42px;}
  .cta-inner{padding:38px 32px;}
  .footer-grid{grid-template-columns:1fr 1fr;}
}
@media (max-width:767px){
  :root{--sec-gap:40px;}
  .topbar{display:flex;}
  .sidebar{transform:translateX(-100%);width:280px;box-shadow:var(--sh-2);}
  .sidebar.open{transform:translateX(0);}
  .main{margin-left:0;padding-top:56px;}
  .container{padding:0 16px;}
  .breadcrumb{padding:20px 0 0;}
  .page-hero{margin-top:14px;border-radius:var(--r-16);}
  .page-hero h1{font-size:30px;line-height:1.26;}
  .hero-sub{font-size:15.5px;}
  .page-hero-inner{padding:32px 20px 34px;}
  .sec-head h2{font-size:24px;}
  .steps,.card-grid,.intro-grid,.footer-grid{grid-template-columns:1fr;}
  .card-body h3{font-size:17px;}
  .cta-inner{padding:32px 20px;flex-direction:column;align-items:flex-start;}
  .cta-inner h2{font-size:23px;}
  .cta-actions{width:100%;}
  .cta-actions .btn{flex:1 1 100%;}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px;}
  .faq-item summary{padding:18px 18px;font-size:15.5px;}
  .faq-answer{padding:0 18px 20px;}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important;scroll-behavior:auto !important;}
}