/* roulang page: index */
:root{
  --shell:#0B0C10;
  --shell-2:#14161C;
  --line-dark:rgba(255,255,255,.08);
  --bg:#FBF8F4;
  --card:#FFFFFF;
  --ink:#24262E;
  --muted:#5B6070;
  --border:#ECEAE5;
  --soft:#F7F5F1;
  --primary:#FF6A2B;
  --primary-hover:#E8551A;
  --primary-active:#D1480F;
  --link:#C2410C;
  --teal:#21D4B4;
  --teal-deep:#0E7C69;
  --amber:#FFC53D;
  --success:#2FA36B;
  --danger:#E5484D;
  --r-btn:10px;
  --r-card:14px;
  --r-img:12px;
  --sh-1:0 1px 2px rgba(11,12,16,.06);
  --sh-2:0 1px 2px rgba(11,12,16,.06),0 10px 28px -14px rgba(11,12,16,.20);
  --nav-w:236px;
}
*,*::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","Noto Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  background:var(--bg);
  color:var(--ink);
  font-size:16px;
  line-height:1.85;
  letter-spacing:.01em;
}
img{max-width:100%;display:block;border:0}
a{color:var(--link);text-decoration:none;transition:color .18s ease}
a:hover{color:var(--primary-hover)}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
h1,h2,h3,h4{margin:0;color:var(--ink);font-weight:700;letter-spacing:.01em}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--teal);outline-offset:2px;border-radius:6px}
.container{width:100%;max-width:1280px;margin:0 auto;padding:0 32px}
.section{padding:96px 0}
.section--soft{background:#FFFFFF;border-top:1px solid var(--border);border-bottom:1px solid var(--border)}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:36px;flex-wrap:wrap}
.section-title{font-size:30px;line-height:1.35}
.section-desc{color:var(--muted);font-size:15px;margin-top:8px;max-width:640px}
.more-link{font-size:14px;font-weight:600;color:var(--link);display:inline-flex;align-items:center;gap:6px}
.more-link:hover{color:var(--primary-hover);gap:10px}

/* 按钮 */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:48px;padding:0 24px;border-radius:var(--r-btn);font-size:16px;font-weight:600;transition:transform .16s ease,background .18s ease,box-shadow .18s ease,color .18s ease,border-color .18s ease;white-space:nowrap}
.btn-lg{height:52px;padding:0 28px}
.btn-sm{height:40px;padding:0 18px;font-size:14px;border-radius:9px}
.btn-primary{background:linear-gradient(135deg,#FF7B3F,#FF6A2B);color:#fff;box-shadow:0 10px 22px -12px rgba(255,106,43,.9)}
.btn-primary:hover{background:linear-gradient(135deg,#E8551A,#E8551A);color:#fff;transform:translateY(-1px)}
.btn-primary:active{background:var(--primary-active);transform:scale(.98)}
.btn-ghost{background:rgba(255,255,255,.04);border:1px solid rgba(255,255,255,.28);color:#fff}
.btn-ghost:hover{background:rgba(255,255,255,.10);color:#fff}
.btn-outline{background:#fff;border:1px solid var(--border);color:var(--ink)}
.btn-outline:hover{background:var(--soft);color:var(--link)}
.btn[disabled]{opacity:.45;pointer-events:none}

/* 标签与徽章 */
.chip{display:inline-flex;align-items:center;gap:6px;height:26px;padding:0 12px;border-radius:999px;background:rgba(255,106,43,.10);color:var(--link);font-size:13px;font-weight:500;line-height:1}
.chip--teal{background:rgba(33,212,180,.16);color:var(--teal-deep)}
.chip--plain{background:var(--soft);color:var(--muted)}
.stars{display:inline-flex;gap:2px;color:var(--amber);font-size:13px}

/* 侧栏 App Shell */
.app{display:flex;min-height:100vh}
.sidebar{
  position:fixed;top:0;left:0;bottom:0;width:var(--nav-w);
  background:var(--shell);display:flex;flex-direction:column;
  padding:0 14px 18px;z-index:90;
}
.sidebar-brand{height:72px;display:flex;align-items:center;padding:0 8px;border-bottom:1px solid var(--line-dark);margin-bottom:14px}
.logo{display:flex;align-items:center;gap:10px;color:#fff;font-weight:700;font-size:15px;letter-spacing:.02em}
.logo:hover{color:#fff}
.logo-mark{width:32px;height:32px;border-radius:9px;background:linear-gradient(135deg,#FF8A4C,#FF6A2B);display:flex;align-items:center;justify-content:center;color:#fff;font-size:16px;font-weight:800;flex:0 0 auto}
.logo-text{white-space:nowrap}
.side-nav{display:flex;flex-direction:column;gap:4px}
.nav-item{position:relative;display:flex;align-items:center;gap:12px;height:44px;padding:0 14px;border-radius:var(--r-btn);color:#9AA0AE;font-size:14px;font-weight:500;transition:background .18s ease,color .18s ease}
.nav-item i{width:18px;text-align:center;font-size:15px;flex:0 0 auto}
.nav-item:hover{color:#fff;background:rgba(255,255,255,.06)}
.nav-item.active{color:#fff;background:rgba(255,106,43,.12)}
.nav-item.active::before{content:"";position:absolute;left:0;top:10px;bottom:10px;width:3px;border-radius:0 3px 3px 0;background:var(--primary)}
.sidebar-cta{margin-top:auto;padding-top:18px}
.sidebar-cta .btn{width:100%}
.sidebar-foot{padding-top:14px;margin-top:14px;border-top:1px solid var(--line-dark);color:#6C7180;font-size:12px;line-height:1.7}
.main{flex:1;min-width:0;margin-left:var(--nav-w)}

/* 顶部栏 + 抽屉 */
.topbar{display:none;position:fixed;top:0;left:0;right:0;height:56px;background:rgba(11,12,16,.96);backdrop-filter:blur(10px);border-bottom:1px solid var(--line-dark);z-index:100;align-items:center;justify-content:space-between;gap:12px;padding:0 16px}
.topbar .logo-text{font-size:14px}
.icon-btn{width:40px;height:40px;display:inline-flex;align-items:center;justify-content:center;border-radius:10px;color:#fff;font-size:17px}
.icon-btn:hover{background:rgba(255,255,255,.08)}
.drawer{position:fixed;top:0;left:0;bottom:0;width:280px;background:var(--shell);z-index:130;transform:translateX(-100%);transition:transform .24s ease;display:flex;flex-direction:column;padding:18px 14px}
.drawer.is-open{transform:none}
.drawer .side-nav{margin-top:8px;gap:4px}
.drawer .nav-item{height:48px}
.drawer-mask{position:fixed;inset:0;background:rgba(0,0,0,.55);z-index:120;opacity:0;pointer-events:none;transition:opacity .24s ease}
.drawer-mask.is-open{opacity:1;pointer-events:auto}
.dock{display:none;position:fixed;left:0;right:0;bottom:0;z-index:95;background:rgba(11,12,16,.97);border-top:1px solid var(--line-dark);padding:8px 16px calc(8px + env(safe-area-inset-bottom));align-items:center;justify-content:space-between;gap:12px;transform:translateY(110%);transition:transform .26s ease}
.dock.is-visible{transform:none}
.dock-title{color:#fff;font-size:13px;font-weight:600}
.dock-sub{color:#8C92A0;font-size:12px}

/* Hero */
.hero{position:relative;overflow:hidden;isolation:isolate;background:var(--shell)}
.hero::before{
  content:"";position:absolute;inset:0;z-index:-1;
  background-image:linear-gradient(100deg,rgba(11,12,16,.95) 0%,rgba(11,12,16,.82) 48%,rgba(11,12,16,.66) 100%),url('/assets/images/backpic/back-1.webp');
  background-size:cover;background-position:center;
}
.hero-inner{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center;padding:104px 0 96px;min-height:560px}
.hero-eyebrow{display:inline-flex;align-items:center;gap:8px;height:30px;padding:0 14px;border-radius:999px;background:rgba(33,212,180,.14);color:#7DF0DA;font-size:13px;font-weight:500}
.hero-title{color:#fff;font-size:46px;line-height:1.25;margin:20px 0 0;letter-spacing:.01em}
.hero-title-sub{display:block;font-size:20px;font-weight:500;color:#B9BECC;margin-top:12px;letter-spacing:.02em}
.hero-sub{color:#C6CAD6;font-size:16px;margin-top:16px;max-width:520px}
.hero-actions{display:flex;gap:14px;margin-top:32px;flex-wrap:wrap}
.hero-facts{display:flex;gap:36px;margin-top:40px;flex-wrap:wrap}
.hero-facts li{color:#fff}
.hero-facts strong{display:block;font-size:22px;line-height:1.2}
.hero-facts span{font-size:13px;color:#9AA0AE}
.hero-cats{display:flex;flex-wrap:wrap;gap:10px;margin-top:30px}
.hero-cats a{display:inline-flex;align-items:center;gap:8px;height:34px;padding:0 14px;border-radius:999px;border:1px solid rgba(255,255,255,.18);background:rgba(255,255,255,.04);color:#E8E9EE;font-size:14px}
.hero-cats a:hover{background:rgba(255,106,43,.18);border-color:rgba(255,106,43,.55);color:#fff}
.hero-media img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:var(--r-img);border:1px solid rgba(255,255,255,.12);box-shadow:0 30px 60px -30px rgba(0,0,0,.9)}
.hero-media figcaption{color:#9AA0AE;font-size:13px;margin-top:12px}

/* 价值点条 */
.value-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.value-item{background:#fff;border:1px solid var(--border);border-radius:var(--r-card);padding:26px 24px;box-shadow:var(--sh-1);transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease}
.value-item:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:#E3DFD7}
.value-icon{width:44px;height:44px;border-radius:12px;background:rgba(255,106,43,.10);color:var(--primary);display:flex;align-items:center;justify-content:center;font-size:18px;margin-bottom:16px}
.value-item h3{font-size:17px;margin-bottom:6px}
.value-item p{color:var(--muted);font-size:14px;line-height:1.7}

/* 截图轨道 */
.shot-wrap{position:relative}
.shot-track{display:flex;gap:20px;overflow-x:auto;scroll-snap-type:x mandatory;padding:4px 4px 12px;scrollbar-width:none}
.shot-track::-webkit-scrollbar{display:none}
.shot-card{flex:0 0 340px;scroll-snap-align:start;background:#fff;border:1px solid var(--border);border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-1);transition:transform .18s ease,box-shadow .18s ease}
.shot-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2)}
.shot-card img{width:100%;aspect-ratio:16/10;object-fit:cover}
.shot-body{padding:16px 18px 18px}
.shot-body h3{font-size:16px}
.shot-body p{color:var(--muted);font-size:13px;margin-top:4px}
.shot-nav{display:flex;gap:10px}
.shot-nav button{width:40px;height:40px;border-radius:50%;border:1px solid var(--border);background:#fff;color:var(--ink);display:inline-flex;align-items:center;justify-content:center;transition:background .18s ease,color .18s ease,border-color .18s ease}
.shot-nav button:hover{background:var(--primary);border-color:var(--primary);color:#fff}

/* 系统要求 */
.spec-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.spec-card{background:#fff;border:1px solid var(--border);border-radius:var(--r-card);padding:28px;box-shadow:var(--sh-1)}
.spec-card h3{font-size:19px;display:flex;align-items:center;gap:10px}
.spec-card h3 i{color:var(--primary);font-size:16px}
.spec-card--rec h3 i{color:var(--teal-deep)}
.spec-rows{margin-top:18px}
.spec-row{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:13px 0;border-bottom:1px dashed var(--border)}
.spec-row:last-child{border-bottom:0}
.spec-label{color:var(--muted);font-size:14px}
.spec-value{background:var(--soft);border-radius:8px;padding:3px 12px;font-size:14px;font-weight:600}

/* 评价墙 */
.review-wall{columns:3;column-gap:24px}
.review{break-inside:avoid;background:#fff;border:1px solid var(--border);border-radius:var(--r-card);padding:22px;margin-bottom:24px;box-shadow:var(--sh-1);transition:transform .18s ease,box-shadow .18s ease}
.review:hover{transform:translateY(-2px);box-shadow:var(--sh-2)}
.review-head{display:flex;align-items:center;gap:12px}
.avatar{width:40px;height:40px;border-radius:999px;background:linear-gradient(135deg,#FFE3D3,#FFC9A8);color:var(--link);font-weight:700;display:flex;align-items:center;justify-content:center;flex:0 0 auto}
.review-name{font-size:14px;font-weight:600}
.review-meta{font-size:12px;color:#8B90A0}
.review-text{margin-top:14px;font-size:14px;color:#3C3F4A;line-height:1.8}
.review .stars{margin-top:12px}

/* 内容列表 */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.news-card{display:flex;flex-direction:column;background:#fff;border:1px solid var(--border);border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-1);transition:transform .18s ease,box-shadow .18s ease;color:inherit}
.news-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);color:inherit}
.news-card img{width:100%;aspect-ratio:16/10;object-fit:cover}
.news-body{padding:18px;display:flex;flex-direction:column;flex:1}
.news-body h3{font-size:17px;line-height:1.5;margin-top:12px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-card:hover h3{color:var(--link)}
.news-summary{color:var(--muted);font-size:14px;margin-top:8px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-foot{margin-top:auto;padding-top:14px;display:flex;align-items:center;justify-content:space-between;color:#8B90A0;font-size:13px}
.empty-state{grid-column:1/-1;text-align:center;padding:56px 24px;background:#fff;border:1px dashed #DEDAD2;border-radius:var(--r-card)}
.empty-state i{font-size:34px;color:#C9C4BA}
.empty-state p{color:var(--muted);font-size:15px;margin:14px 0 10px}

/* 下载区 */
.download-panel{background:linear-gradient(140deg,#14161C,#0B0C10);border-radius:18px;padding:48px;display:grid;grid-template-columns:1.25fr .75fr;gap:40px;align-items:center;color:#fff}
.download-panel h2{color:#fff;font-size:28px;line-height:1.35}
.download-panel p{color:#A9AEBE;font-size:15px;margin-top:12px;max-width:560px}
.platform-tabs{display:inline-flex;gap:6px;padding:6px;background:rgba(255,255,255,.06);border-radius:999px;margin-top:24px}
.platform-tabs button{height:38px;padding:0 20px;border-radius:999px;color:#B9BECC;font-size:14px;font-weight:500;transition:background .18s ease,color .18s ease}
.platform-tabs button.active{background:var(--primary);color:#fff}
.download-actions{display:flex;align-items:center;gap:14px;margin-top:22px;flex-wrap:wrap}
.download-note{color:#8C92A0;font-size:13px}
.qr-box{background:#fff;border-radius:var(--r-card);padding:14px;text-align:center;color:var(--ink);max-width:210px;margin-left:auto}
.qr-box img{width:150px;height:150px;object-fit:cover;border-radius:10px;margin:0 auto}
.qr-box span{display:block;font-size:13px;color:var(--muted);margin-top:10px}

/* FAQ */
.faq-wrap{max-width:900px;margin:0 auto}
.faq-item{background:#fff;border:1px solid var(--border);border-radius:var(--r-card);margin-bottom:12px;overflow:hidden;box-shadow:var(--sh-1)}
.faq-q{width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;min-height:56px;padding:12px 22px;font-size:16px;font-weight:600;text-align:left;color:var(--ink)}
.faq-q:hover{color:var(--link)}
.faq-icon{width:26px;height:26px;border-radius:8px;background:var(--soft);color:var(--primary);display:inline-flex;align-items:center;justify-content:center;font-size:13px;transition:transform .22s ease;flex:0 0 auto}
.faq-item.is-open .faq-icon{transform:rotate(45deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .28s ease}
.faq-item.is-open .faq-a{max-height:340px}
.faq-a-inner{padding:0 22px 22px;color:var(--muted);font-size:15px;line-height:1.8;background:#F7F5F1;padding-top:16px}

/* CTA 带 + 页脚 */
.cta-band{background:var(--shell);padding:64px 0}
.cta-inner{display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap}
.cta-inner h2{color:#fff;font-size:28px;line-height:1.4}
.cta-inner p{color:#9AA0AE;font-size:15px;margin-top:10px;max-width:620px}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap}
.site-footer{background:var(--shell);color:#9AA0AE;padding-top:8px;border-top:1px solid var(--line-dark)}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:32px;padding:56px 0 40px}
.footer-col h4{color:#fff;font-size:14px;margin-bottom:16px;letter-spacing:.03em}
.footer-col a{display:block;color:#9AA0AE;font-size:14px;padding:5px 0}
.footer-col a:hover{color:#fff}
.footer-brand p{font-size:14px;color:#8C92A0;margin-top:14px;max-width:320px}
.footer-qr{margin-top:18px;display:flex;align-items:center;gap:12px}
.footer-qr img{width:64px;height:64px;border-radius:10px;object-fit:cover}
.footer-qr span{font-size:12px;color:#8C92A0}
.footer-bottom{border-top:1px solid var(--line-dark);padding:20px 0;display:flex;align-items:center;justify-content:space-between;gap:14px;flex-wrap:wrap;font-size:12px;color:#6C7180}

/* 响应式 */
@media (min-width:1024px) and (max-width:1279px){
  :root{--nav-w:76px}
  .sidebar{padding:0 10px 18px}
  .sidebar-brand{justify-content:center;padding:0}
  .logo-text{display:none}
  .nav-item{justify-content:center;padding:0}
  .nav-item .nav-label{display:block;position:absolute;left:calc(100% + 12px);top:50%;transform:translate(-6px,-50%);background:#14161C;color:#fff;font-size:13px;font-weight:500;padding:6px 12px;border-radius:8px;white-space:nowrap;opacity:0;pointer-events:none;transition:opacity .18s ease,transform .18s ease;box-shadow:0 10px 24px -12px rgba(0,0,0,.9);z-index:99}
  .nav-item:hover .nav-label{opacity:1;transform:translate(0,-50%)}
  .sidebar-cta .btn{width:44px;height:44px;padding:0;margin:0 auto}
  .sidebar-cta .btn span{display:none}
  .sidebar-foot{text-align:center;font-size:11px}
  .sidebar-foot .foot-line{display:none}
}
@media (max-width:1023px){
  .sidebar{display:none}
  .topbar{display:flex}
  .main{margin-left:0;padding-top:56px}
  .container{padding:0 24px}
  .section{padding:72px 0}
  .hero-inner{grid-template-columns:1fr;gap:36px;padding:64px 0 56px;min-height:0}
  .hero-title{font-size:34px}
  .value-grid{grid-template-columns:repeat(2,1fr)}
  .spec-grid{grid-template-columns:1fr}
  .review-wall{columns:2}
  .news-grid{grid-template-columns:repeat(2,1fr)}
  .download-panel{grid-template-columns:1fr;padding:36px}
  .qr-box{margin:0}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;padding:48px 0 32px}
  .dock{display:flex}
}
@media (max-width:639px){
  .container{padding:0 16px}
  .section{padding:56px 0}
  .hero-title{font-size:29px}
  .hero-title-sub{font-size:17px}
  .hero-actions .btn{width:100%}
  .hero-facts{gap:24px}
  .section-title{font-size:24px}
  .value-grid{grid-template-columns:1fr}
  .review-wall{columns:1}
  .news-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .download-panel{padding:26px}
  .cta-inner h2{font-size:23px}
  .cta-actions .btn{width:100%}
  .shot-card{flex:0 0 260px}
}
@media (min-width:1024px){
  .drawer,.drawer-mask{display:none}
  .dock{display:none}
}

/* roulang page: article */
:root{
  --obsidian:#0B0C10;
  --shell:#14161C;
  --line-dark:rgba(255,255,255,.08);
  --paper:#FBF8F4;
  --card:#FFFFFF;
  --ink:#24262E;
  --ink-2:#5B6070;
  --ink-3:#8A8F9C;
  --line:#ECEAE5;
  --primary:#FF6A2B;
  --primary-hover:#E8551A;
  --primary-active:#D1480F;
  --primary-ink:#C2410C;
  --celadon:#21D4B4;
  --amber:#FFC53D;
  --error:#E5484D;
  --success:#2FA36B;
  --radius-btn:10px;
  --radius-card:14px;
  --radius-img:12px;
  --shadow-soft:0 1px 2px rgba(11,12,16,.06), 0 10px 28px -14px rgba(11,12,16,.20);
  --shadow-hover:0 2px 4px rgba(11,12,16,.07), 0 16px 34px -14px rgba(11,12,16,.26);
  --side-w:236px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:"PingFang SC","HarmonyOS Sans SC","Noto Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.85;
  letter-spacing:.01em;
  overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font-family:inherit}
h1,h2,h3,h4{margin:0;font-weight:700;color:var(--ink)}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--celadon);outline-offset:2px;border-radius:6px}
.container{width:100%;max-width:1180px;margin:0 auto;padding:0 32px}

/* ---------- 侧边导航 ---------- */
.side-nav{
  position:fixed;left:0;top:0;width:var(--side-w);height:100vh;
  background:var(--obsidian);
  display:flex;flex-direction:column;
  padding:18px 14px 16px;
  z-index:80;
  border-right:1px solid var(--line-dark);
  transition:transform .24s ease,width .2s ease;
}
.side-logo{
  display:flex;align-items:center;gap:10px;
  height:44px;padding:0 10px;margin-bottom:18px;
  color:#fff;font-weight:800;font-size:16px;letter-spacing:.02em;
}
.logo-mark{
  width:30px;height:30px;flex:0 0 30px;border-radius:9px;
  background:linear-gradient(135deg,var(--primary),#FF9153);
  color:#fff;display:flex;align-items:center;justify-content:center;
  font-size:16px;font-weight:800;
}
.logo-text{white-space:nowrap}
.nav-group{display:flex;flex-direction:column;gap:4px;flex:1}
.nav-item{
  display:flex;align-items:center;gap:12px;
  height:44px;padding:0 14px;border-radius:var(--radius-btn);
  color:#9AA0AE;font-size:14.5px;font-weight:500;
  position:relative;transition:background .18s ease,color .18s ease;
}
.nav-item i{width:18px;text-align:center;font-size:15px;flex:0 0 18px}
.nav-item:hover{color:#fff;background:rgba(255,255,255,.06)}
.nav-item.active{color:#fff;background:rgba(255,106,43,.12)}
.nav-item.active::before{
  content:"";position:absolute;left:0;top:9px;bottom:9px;width:3px;
  border-radius:0 3px 3px 0;background:var(--primary);
}
.side-foot{
  padding:12px 10px 0;margin-top:12px;
  border-top:1px solid var(--line-dark);
  color:#6E7480;font-size:12px;line-height:1.7;
}
.side-foot a{color:#9AA0AE}
.side-foot a:hover{color:#fff}

/* ---------- 顶部移动栏 ---------- */
.topbar{
  display:none;position:fixed;top:0;left:0;right:0;height:56px;
  background:rgba(11,12,16,.96);backdrop-filter:blur(8px);
  align-items:center;gap:12px;padding:0 14px;z-index:90;
  border-bottom:1px solid var(--line-dark);
}
.menu-btn{
  width:38px;height:38px;border-radius:10px;border:1px solid var(--line-dark);
  background:transparent;color:#fff;font-size:16px;cursor:pointer;
  display:flex;align-items:center;justify-content:center;
  transition:background .18s ease;
}
.menu-btn:hover{background:rgba(255,255,255,.08)}
.topbar .logo{display:flex;align-items:center;gap:9px;color:#fff;font-weight:800;font-size:15px}
.topbar-cta{
  margin-left:auto;height:36px;padding:0 16px;border-radius:9px;
  background:var(--primary);color:#fff;font-size:13.5px;font-weight:600;
  display:flex;align-items:center;
}
.topbar-cta:hover{background:var(--primary-hover)}
.drawer-mask{
  position:fixed;inset:0;background:rgba(0,0,0,.55);z-index:70;
  opacity:0;pointer-events:none;transition:opacity .24s ease;
}
.drawer-mask.show{opacity:1;pointer-events:auto}

/* ---------- 主框架 ---------- */
.shell{margin-left:var(--side-w);min-height:100vh;display:flex;flex-direction:column}
main{flex:1}

/* ---------- 进度条 ---------- */
.progress-wrap{
  position:sticky;top:0;left:0;right:0;height:2px;z-index:60;
  background:rgba(11,12,16,.06);
}
.progress-bar{height:2px;width:0;background:var(--primary);transition:width .08s linear}

/* ---------- 面包屑 ---------- */
.crumb{
  display:flex;align-items:center;gap:8px;flex-wrap:wrap;
  font-size:13px;color:var(--ink-3);padding:26px 0 20px;
}
.crumb a{color:var(--ink-2)}
.crumb a:hover{color:var(--primary-ink)}
.crumb .sep{color:#C9C6C0}
.crumb .current{color:var(--primary-ink);font-weight:600;max-width:420px;
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis}

/* ---------- 文章头 ---------- */
.article-head{padding-bottom:22px;border-bottom:1px solid var(--line)}
.article-title{
  font-size:34px;line-height:1.35;font-weight:800;letter-spacing:.01em;
  max-width:900px;
}
.article-meta{
  display:flex;align-items:center;gap:14px;flex-wrap:wrap;
  margin-top:18px;font-size:13.5px;color:var(--ink-2);
}
.badge{
  display:inline-flex;align-items:center;height:26px;padding:0 12px;
  border-radius:999px;background:rgba(255,106,43,.10);
  color:var(--primary-ink);font-size:12.5px;font-weight:600;
}
.badge.mint{background:rgba(33,212,180,.14);color:#0E7F6B}
.badge.amber{background:rgba(255,197,61,.20);color:#8A6100}
.meta-item{display:inline-flex;align-items:center;gap:6px}
.meta-dot{width:4px;height:4px;border-radius:50%;background:#D6D3CD}

/* ---------- 正文布局 ---------- */
.article-layout{
  display:grid;grid-template-columns:minmax(0,1fr) 220px;
  gap:48px;align-items:start;padding:36px 0 0;
}
.article-main{min-width:0}
.article-body{
  max-width:760px;font-size:17px;line-height:1.85;color:var(--ink);
  word-break:break-word;
}
.article-body p{margin:0 0 1.2em}
.article-body h2{
  font-size:26px;line-height:1.35;margin:40px 0 18px;
  padding-left:16px;border-left:4px solid var(--primary);
}
.article-body h3{font-size:20px;line-height:1.5;margin:32px 0 14px}
.article-body h4{font-size:17px;line-height:1.5;margin:24px 0 12px}
.article-body a{color:var(--primary-ink);text-decoration:underline;text-underline-offset:3px}
.article-body a:hover{color:var(--primary-active)}
.article-body ul{padding-left:2px;margin:0 0 1.2em}
.article-body ul li{position:relative;padding-left:18px;margin:0 0 .6em;line-height:1.8}
.article-body ul li::before{
  content:"";position:absolute;left:0;top:.78em;width:6px;height:6px;
  border-radius:1px;background:var(--primary);
}
.article-body ol{padding-left:22px;list-style:decimal;margin:0 0 1.2em}
.article-body ol li{margin:0 0 .6em;line-height:1.8}
.article-body blockquote{
  margin:24px 0;padding:16px 20px;border-left:3px solid var(--celadon);
  background:rgba(33,212,180,.08);border-radius:0 12px 12px 0;color:#3B3F4A;
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{border-radius:var(--radius-img);margin:18px 0}
.article-body figure{margin:18px 0}
.article-body figcaption{font-size:13px;color:var(--ink-3);text-align:center;margin-top:8px}
.article-body table{display:block;width:100%;overflow-x:auto;border-collapse:collapse;margin:20px 0}
.article-body th,.article-body td{border:1px solid var(--line);padding:10px 14px;font-size:15px;text-align:left}
.article-body th{background:#F4F1EC;font-weight:600}
.article-body code{background:#F1EFEA;padding:2px 6px;border-radius:6px;font-size:.92em}
.article-body pre{
  background:var(--obsidian);color:#E8EAF0;padding:16px 18px;border-radius:12px;
  overflow-x:auto;font-size:14px;line-height:1.7;margin:20px 0;
}
.article-body pre code{background:transparent;padding:0;color:inherit}
.article-body hr{border:0;border-top:1px solid var(--line);margin:32px 0}

/* ---------- 目录 ---------- */
.toc-desktop{
  position:sticky;top:36px;width:220px;
  font-size:13.5px;padding-left:18px;border-left:1px solid var(--line);
}
.toc-title{font-size:13px;font-weight:700;color:var(--ink-2);margin-bottom:12px;letter-spacing:.08em}
.toc-list{display:flex;flex-direction:column;gap:2px;max-height:60vh;overflow-y:auto}
.toc-list a{
  display:block;padding:6px 10px;border-radius:8px;color:var(--ink-2);
  line-height:1.5;border-left:2px solid transparent;
  transition:color .18s ease,background .18s ease;
}
.toc-list a:hover{color:var(--ink);background:rgba(11,12,16,.04)}
.toc-list a.active{color:var(--primary-ink);font-weight:600;border-left:2px solid var(--primary);background:rgba(255,106,43,.07)}
.toc-mobile{display:none;margin:0 0 22px;border:1px solid var(--line);border-radius:var(--radius-card);background:var(--card)}
.toc-mobile summary{
  cursor:pointer;padding:14px 18px;font-size:14.5px;font-weight:600;color:var(--ink-2);
  list-style:none;
}
.toc-mobile summary::-webkit-details-marker{display:none}
.toc-mobile summary::after{content:"+";float:right;color:var(--ink-3)}
.toc-mobile[open] summary::after{content:"–"}
.toc-mobile .toc-list{padding:0 12px 14px}

/* ---------- 空态 ---------- */
.empty-state{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:64px 24px;text-align:center;box-shadow:var(--shadow-soft);
}
.empty-state .icon{
  width:64px;height:64px;margin:0 auto 18px;border-radius:20px;
  background:rgba(255,106,43,.10);color:var(--primary);
  display:flex;align-items:center;justify-content:center;font-size:26px;
}
.empty-state p{font-size:15px;color:var(--ink-2);margin-bottom:14px}
.empty-state a{color:var(--primary-ink);font-weight:600;text-decoration:underline;text-underline-offset:3px}

/* ---------- 标签行 ---------- */
.tag-row{
  display:flex;align-items:center;gap:10px;flex-wrap:wrap;
  margin:44px 0 0;padding-top:24px;border-top:1px solid var(--line);
}
.tag-row .label{font-size:13px;color:var(--ink-3)}
.chip{
  display:inline-flex;align-items:center;height:28px;padding:0 14px;
  border-radius:999px;background:rgba(255,106,43,.10);
  color:var(--primary-ink);font-size:13px;font-weight:500;
  transition:background .18s ease,transform .18s ease;
}
.chip:hover{background:rgba(255,106,43,.18);transform:translateY(-1px)}
.chip.mint{background:rgba(33,212,180,.14);color:#0E7F6B}
.chip.mint:hover{background:rgba(33,212,180,.22)}

/* ---------- 章节标题 ---------- */
.section{margin-top:72px}
.section-head{
  display:flex;align-items:flex-end;justify-content:space-between;
  gap:20px;margin-bottom:26px;
}
.section-head h2{font-size:26px;line-height:1.35;font-weight:700}
.section-head p{font-size:14px;color:var(--ink-2);margin-top:6px}
.section-head .more{
  font-size:14px;color:var(--primary-ink);font-weight:600;white-space:nowrap;
}
.section-head .more:hover{color:var(--primary-active)}

/* ---------- 上下篇 ---------- */
.adjacent{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.adj-card{
  display:flex;flex-direction:column;gap:8px;
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:20px 22px;box-shadow:var(--shadow-soft);
  transition:box-shadow .2s ease,transform .2s ease,border-color .2s ease;
}
.adj-card:hover{box-shadow:var(--shadow-hover);transform:translateY(-2px);border-color:#E0DCD3}
.adj-card .kicker{font-size:12.5px;color:var(--ink-3);letter-spacing:.06em}
.adj-card strong{font-size:16px;font-weight:600;line-height:1.5;color:var(--ink)}
.adj-card:hover strong{color:var(--primary-ink)}
.adj-card.next{text-align:right;align-items:flex-end}

/* ---------- 相关内容卡片 ---------- */
.card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.card{
  display:flex;flex-direction:column;
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius-card);
  overflow:hidden;box-shadow:var(--shadow-soft);
  transition:box-shadow .2s ease,transform .2s ease,border-color .2s ease;
}
.card:hover{box-shadow:var(--shadow-hover);transform:translateY(-2px);border-color:#E0DCD3}
.card-thumb{
  position:relative;width:100%;aspect-ratio:16/10;overflow:hidden;background:#EFEDE8;
}
.card-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease}
.card:hover .card-thumb img{transform:scale(1.045)}
.card-body{padding:16px 18px 20px;display:flex;flex-direction:column;gap:10px;flex:1}
.card-body h3{
  font-size:16.5px;line-height:1.5;font-weight:600;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.card:hover .card-body h3{color:var(--primary-ink)}
.card-body .desc{
  font-size:13.5px;line-height:1.7;color:var(--ink-2);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.card-foot{
  display:flex;align-items:center;gap:10px;margin-top:auto;
  font-size:12.5px;color:var(--ink-3);
}

/* ---------- 下载 CTA 带 ---------- */
.cta-band{
  margin-top:80px;background:var(--obsidian);color:#fff;position:relative;overflow:hidden;
}
.cta-band::after{
  content:"";position:absolute;right:-60px;top:-60px;width:260px;height:260px;
  background-image:radial-gradient(rgba(255,106,43,.35) 1px, transparent 1px);
  background-size:14px 14px;opacity:.5;pointer-events:none;
}
.cta-inner{
  display:flex;align-items:center;justify-content:space-between;gap:32px;
  padding:56px 32px;position:relative;z-index:1;
}
.cta-inner h2{color:#fff;font-size:28px;line-height:1.35}
.cta-inner p{color:#A8AEBB;font-size:14.5px;margin-top:10px;max-width:520px}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--radius-btn);
  font-size:15.5px;font-weight:600;cursor:pointer;border:1px solid transparent;
  transition:background .18s ease,transform .18s ease,box-shadow .18s ease,color .18s ease,border-color .18s ease;
}
.btn-primary{background:var(--primary);color:#fff;box-shadow:0 8px 20px -10px rgba(255,106,43,.85)}
.btn-primary:hover{background:var(--primary-hover);transform:translateY(-1px)}
.btn-primary:active{background:var(--primary-active);transform:scale(.98)}
.btn-ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.28)}
.btn-ghost:hover{background:rgba(255,255,255,.08)}
.btn-ghost:active{transform:scale(.98)}

/* ---------- 吸底下载条 ---------- */
.sticky-download{
  position:fixed;left:0;right:0;bottom:0;height:56px;z-index:65;
  background:rgba(11,12,16,.97);border-top:1px solid var(--line-dark);
  display:none;align-items:center;justify-content:space-between;
  padding:0 16px calc(0px + env(safe-area-inset-bottom,0px));
  transform:translateY(110%);transition:transform .24s ease;
}
.sticky-download.show{transform:translateY(0)}
.sticky-download span{color:#C9CDD6;font-size:13.5px}
.sticky-download a{
  height:38px;padding:0 18px;border-radius:9px;background:var(--primary);
  color:#fff;font-size:13.5px;font-weight:600;display:flex;align-items:center;
}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--obsidian);color:#9AA0AE;margin-top:80px}
.footer-grid{
  display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:36px;
  padding:60px 0 40px;
}
.footer-col h4{color:#E6E9EF;font-size:14px;font-weight:600;margin-bottom:16px}
.footer-col a{display:block;font-size:14px;color:#9AA0AE;padding:5px 0;transition:color .18s ease}
.footer-col a:hover{color:#fff}
.footer-brand .logo{display:inline-flex;align-items:center;gap:10px;color:#fff;font-weight:800;font-size:16px;margin-bottom:14px}
.footer-brand p{font-size:14px;line-height:1.8;max-width:320px}
.footer-qr{display:flex;align-items:center;gap:12px;margin-top:20px}
.footer-qr img{width:78px;height:78px;object-fit:cover;border-radius:10px;background:#1C1F27}
.footer-qr span{font-size:12.5px;line-height:1.7;color:#7C828F}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  border-top:1px solid var(--line-dark);padding:20px 0 26px;
  font-size:12px;color:#6E7480;
}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  :root{--side-w:76px}
  .side-nav{padding:16px 10px}
  .side-logo{padding:0;justify-content:center}
  .side-logo .logo-text{display:none}
  .nav-item{justify-content:center;padding:0}
  .nav-item .nav-label{
    position:absolute;left:calc(100% + 12px);top:50%;transform:translateY(-50%);
    background:var(--shell);color:#fff;font-size:13px;padding:7px 12px;border-radius:8px;
    white-space:nowrap;opacity:0;pointer-events:none;transition:opacity .16s ease;
    border:1px solid var(--line-dark);z-index:5;
  }
  .nav-item:hover .nav-label{opacity:1}
  .side-foot{display:none}
  .article-layout{grid-template-columns:minmax(0,1fr)}
  .toc-desktop{display:none}
  .toc-mobile{display:block}
}
@media (max-width:1023px){
  :root{--side-w:0px}
  .topbar{display:flex}
  .side-nav{
    width:280px;transform:translateX(-100%);
    padding:18px 14px 16px;z-index:100;
  }
  .side-nav.open{transform:translateX(0)}
  .side-logo{justify-content:flex-start;padding:0 10px}
  .side-logo .logo-text{display:inline}
  .nav-item{justify-content:flex-start;padding:0 14px;height:48px}
  .nav-item .nav-label{position:static;transform:none;opacity:1;background:transparent;border:0;padding:0;color:inherit;font-size:14.5px}
  .side-foot{display:block}
  .shell{margin-left:0;padding-top:56px}
  .progress-wrap{top:56px}
  .sticky-download{display:flex}
  main{padding-bottom:80px}
  .article-title{font-size:26px}
  .cta-inner{flex-direction:column;align-items:flex-start;padding:44px 24px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;padding:48px 0 32px}
  .container{padding:0 24px}
}
@media (max-width:767px){
  body{font-size:15.5px}
  .container{padding:0 16px}
  .article-body{font-size:16px;line-height:1.85}
  .article-body h2{font-size:21px;margin:32px 0 14px}
  .article-body h3{font-size:18px}
  .article-title{font-size:23px}
  .card-grid{grid-template-columns:1fr;gap:18px}
  .adjacent{grid-template-columns:1fr}
  .adj-card.next{text-align:left;align-items:flex-start}
  .section{margin-top:52px}
  .section-head{flex-direction:column;align-items:flex-start;gap:8px}
  .cta-inner h2{font-size:22px}
  .cta-actions{width:100%}
  .cta-actions .btn{flex:1 1 auto;width:100%}
  .footer-grid{grid-template-columns:1fr;gap:24px}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px}
}
@media (max-width:520px){
  .article-title{font-size:21px}
  .crumb .current{max-width:200px}
  .btn{height:46px;font-size:15px}
  .cta-band::after{display:none}
}

/* roulang page: category1 */
:root{
  --ink:#0B0C10;
  --ink-2:#14161C;
  --line-dark:rgba(255,255,255,.08);
  --paper:#FBF8F4;
  --card:#FFFFFF;
  --text:#24262E;
  --muted:#5B6070;
  --brand:#FF6A2B;
  --brand-hover:#E8551A;
  --brand-active:#D1480F;
  --teal:#21D4B4;
  --amber:#FFC53D;
  --danger:#E5484D;
  --ok:#2FA36B;
  --link:#C2410C;
  --border:#ECEAE5;
  --r-btn:10px;
  --r-card:14px;
  --r-img:12px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(11,12,16,.06);
  --sh-2:0 10px 28px -14px rgba(11,12,16,.20);
  --sh-3:0 16px 38px -16px rgba(11,12,16,.28);
  --sidebar-w:236px;
  --topbar-h:56px;
}
*,*::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","Noto Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--text);
  background:var(--paper);
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto}
a{color:var(--link);text-decoration:none}
a:hover{color:var(--brand-active)}
button{font-family:inherit}
h1,h2,h3,h4{margin:0;color:var(--text);letter-spacing:.005em}
h1{font-size:44px;line-height:1.25;font-weight:800}
h2{font-size:30px;line-height:1.35;font-weight:700}
h3{font-size:21px;line-height:1.5;font-weight:700}
p{margin:0 0 1.2em}
ul,ol{margin:0 0 1.2em;padding-left:1.15em}
li{margin-bottom:.5em}
:focus-visible{outline:2px solid var(--teal);outline-offset:2px;border-radius:6px}
.container{width:100%;max-width:1280px;margin:0 auto;padding:0 32px}
.muted{color:var(--muted)}
.small{font-size:14px;line-height:1.7}
.micro{font-size:12.5px;line-height:1.6;letter-spacing:.02em}

/* ---------- 左侧 App Shell ---------- */
.app-sidebar{
  position:fixed;top:0;left:0;bottom:0;width:var(--sidebar-w);
  background:var(--ink);color:#fff;z-index:60;
  display:flex;flex-direction:column;
  border-right:1px solid var(--line-dark);
}
.sidebar-top{
  height:72px;display:flex;align-items:center;padding:0 18px;
  border-bottom:1px solid var(--line-dark);flex:0 0 auto;
}
.logo{display:inline-flex;align-items:center;gap:10px;color:#fff;font-weight:700}
.logo:hover{color:#fff}
.logo-mark{
  width:30px;height:30px;border-radius:9px;flex:0 0 auto;
  display:inline-flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,var(--brand),#FF9A4D);
  color:#fff;font-size:16px;font-weight:800;letter-spacing:0;
}
.logo-text{font-size:15px;font-weight:700;white-space:nowrap;letter-spacing:.02em}
.side-nav{flex:1 1 auto;overflow-y:auto;padding:16px 12px;display:flex;flex-direction:column;gap:6px}
.nav-item{
  position:relative;display:flex;align-items:center;gap:12px;
  height:44px;padding:0 14px;border-radius:var(--r-btn);
  color:#9AA0AE;font-size:14.5px;font-weight:500;
  transition:background .18s ease,color .18s ease;
}
.nav-item i{width:18px;text-align:center;font-size:15px;flex:0 0 auto}
.nav-item .nav-label{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.nav-item:hover{color:#fff;background:rgba(255,255,255,.06)}
.nav-item.active{color:#fff;background:rgba(255,106,43,.12)}
.nav-item.active::before{
  content:"";position:absolute;left:0;top:9px;bottom:9px;width:3px;
  border-radius:0 3px 3px 0;background:var(--brand);
}
.sidebar-foot{
  flex:0 0 auto;padding:14px 18px 18px;border-top:1px solid var(--line-dark);
  color:#6C7280;font-size:12px;line-height:1.6;
}
.sidebar-foot a{color:#9AA0AE}
.sidebar-foot a:hover{color:#fff}
.side-cta{
  display:flex;align-items:center;justify-content:center;gap:8px;
  height:42px;border-radius:var(--r-btn);margin-bottom:12px;
  background:var(--brand);color:#fff;font-size:14px;font-weight:600;
  transition:background .18s ease,transform .18s ease;
}
.side-cta:hover{background:var(--brand-hover);color:#fff;transform:translateY(-1px)}

.app-main{margin-left:var(--sidebar-w);min-height:100vh;display:flex;flex-direction:column}

/* ---------- 移动端顶栏与抽屉 ---------- */
.topbar{
  display:none;position:fixed;top:0;left:0;right:0;height:var(--topbar-h);
  background:rgba(11,12,16,.96);backdrop-filter:blur(8px);
  border-bottom:1px solid var(--line-dark);z-index:70;
  align-items:center;justify-content:space-between;padding:0 14px;gap:12px;
}
.topbar .logo-mark{width:26px;height:26px;font-size:14px;border-radius:8px}
.topbar .logo-text{font-size:14px;max-width:150px;overflow:hidden;text-overflow:ellipsis}
.icon-btn{
  width:40px;height:40px;border-radius:10px;border:1px solid var(--line-dark);
  background:rgba(255,255,255,.04);color:#fff;font-size:16px;
  display:inline-flex;align-items:center;justify-content:center;cursor:pointer;
  transition:background .18s ease;
}
.icon-btn:hover{background:rgba(255,255,255,.10)}
.drawer{
  position:fixed;top:0;left:0;bottom:0;width:280px;background:var(--ink);
  z-index:90;transform:translateX(-100%);transition:transform .24s ease;
  display:flex;flex-direction:column;border-right:1px solid var(--line-dark);
}
.drawer.open{transform:translateX(0)}
.drawer .side-nav{padding-top:14px}
.drawer .nav-item{height:48px;margin-bottom:4px}
.drawer-mask{
  position:fixed;inset:0;background:rgba(0,0,0,.55);z-index:80;
  opacity:0;visibility:hidden;transition:opacity .24s ease,visibility .24s ease;
}
.drawer-mask.open{opacity:1;visibility:visible}

/* ---------- 通用组件 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--r-btn);border:1px solid transparent;
  font-size:16px;font-weight:600;cursor:pointer;letter-spacing:.01em;
  transition:background .18s ease,color .18s ease,transform .18s ease,box-shadow .18s ease,border-color .18s ease;
}
.btn i{font-size:14px}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 8px 20px -12px rgba(255,106,43,.9)}
.btn-primary:hover{background:var(--brand-hover);color:#fff;transform:translateY(-1px)}
.btn-primary:active{background:var(--brand-active);transform:scale(.98)}
.btn-ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.22)}
.btn-ghost:hover{background:rgba(255,255,255,.08);color:#fff}
.btn-ghost-light{background:transparent;color:var(--text);border-color:#DCD8D1}
.btn-ghost-light:hover{background:rgba(11,12,16,.04);color:var(--text)}
.btn-sm{height:40px;padding:0 18px;font-size:14px}
.btn-lg{height:52px}
.btn[disabled],.btn.is-disabled{opacity:.45;cursor:not-allowed;transform:none;box-shadow:none}
.btn-block{width:100%}

.badge{
  display:inline-flex;align-items:center;gap:6px;height:26px;padding:0 12px;
  border-radius:var(--r-pill);font-size:12.5px;font-weight:600;letter-spacing:.02em;
  background:rgba(255,106,43,.10);color:var(--link);
}
.badge-teal{background:rgba(33,212,180,.14);color:#0E7C67}
.badge-amber{background:rgba(255,197,61,.20);color:#8A5B00}
.badge-ink{background:rgba(11,12,16,.06);color:#3B3F4B}

.chip-row{display:flex;flex-wrap:wrap;gap:10px}
.chip{
  display:inline-flex;align-items:center;gap:8px;height:36px;padding:0 16px;
  border-radius:var(--r-pill);border:1px solid var(--border);background:#fff;
  font-size:14px;color:var(--muted);cursor:pointer;
  transition:border-color .18s ease,color .18s ease,background .18s ease;
}
.chip:hover{border-color:#D8D3CB;color:var(--text)}
.chip.is-active{background:rgba(255,106,43,.10);border-color:rgba(255,106,43,.32);color:var(--link);font-weight:600}

.card{
  background:var(--card);border:1px solid var(--border);border-radius:var(--r-card);
  box-shadow:var(--sh-1);transition:box-shadow .2s ease,transform .2s ease;
}
.card:hover{box-shadow:var(--sh-2);transform:translateY(-2px)}
.card-body{padding:20px 22px 22px}

.section{padding:96px 0}
.section-tight{padding:56px 0}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:36px}
.section-head .head-text{max-width:720px}
.section-head .eyebrow{
  display:inline-block;font-size:12.5px;font-weight:700;color:var(--brand-active);
  letter-spacing:.14em;text-transform:uppercase;margin-bottom:10px;
}
.section-head p{margin:12px 0 0;color:var(--muted);font-size:15.5px;line-height:1.8}
.text-link{font-size:14.5px;font-weight:600;color:var(--link);white-space:nowrap}
.text-link i{margin-left:6px;font-size:12px;transition:transform .18s ease}
.text-link:hover i{transform:translateX(3px)}
.divider{height:1px;background:var(--border);border:0;margin:0}

/* ---------- 内页 Hero ---------- */
.page-hero{position:relative;background:var(--ink);color:#fff;overflow:hidden;isolation:isolate}
.page-hero .hero-bg{
  position:absolute;inset:0;z-index:-2;
  background-image:url("/assets/images/backpic/back-2.webp");
  background-size:cover;background-position:center 30%;opacity:.5;
}
.page-hero::after{
  content:"";position:absolute;inset:0;z-index:-1;
  background:linear-gradient(115deg,rgba(11,12,16,.94) 0%,rgba(11,12,16,.82) 46%,rgba(11,12,16,.66) 100%);
}
.page-hero .dots{
  position:absolute;right:-40px;top:40px;width:280px;height:180px;z-index:-1;opacity:.12;
  background-image:radial-gradient(rgba(255,255,255,.9) 1.4px,transparent 1.4px);
  background-size:14px 14px;
}
.hero-inner{padding:64px 0 76px;max-width:840px}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:rgba(255,255,255,.62);margin-bottom:22px}
.breadcrumb a{color:rgba(255,255,255,.72)}
.breadcrumb a:hover{color:#fff}
.breadcrumb .sep{color:rgba(255,255,255,.3)}
.breadcrumb .current{color:#fff;font-weight:600}
.page-hero h1{color:#fff;letter-spacing:.01em}
.page-hero .hero-sub{margin-top:18px;font-size:17.5px;line-height:1.85;color:rgba(255,255,255,.82);max-width:700px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px}
.hero-meta{display:flex;flex-wrap:wrap;gap:12px;margin-top:30px}
.hero-meta .pill{
  display:inline-flex;align-items:center;gap:8px;height:34px;padding:0 14px;
  border-radius:var(--r-pill);border:1px solid var(--line-dark);background:rgba(255,255,255,.05);
  font-size:13.5px;color:rgba(255,255,255,.85);
}
.hero-meta .pill i{color:var(--teal);font-size:12px}

/* ---------- 概览条 ---------- */
.intro-band{padding:52px 0 40px}
.intro-grid{display:grid;grid-template-columns:1.5fr 1fr;gap:36px;align-items:start}
.intro-copy p{margin:0;color:var(--muted);font-size:16px;line-height:1.9}
.intro-stat{
  display:grid;grid-template-columns:repeat(2,1fr);gap:14px;
}
.stat{
  background:#fff;border:1px solid var(--border);border-radius:var(--r-card);
  padding:18px 18px 16px;box-shadow:var(--sh-1);
}
.stat b{display:block;font-size:24px;font-weight:800;color:var(--ink);letter-spacing:.01em}
.stat span{display:block;margin-top:4px;font-size:13px;color:var(--muted)}
.filter-line{margin-top:30px;display:flex;flex-wrap:wrap;gap:16px;align-items:center}

/* ---------- 能力要点 ---------- */
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.point{
  background:#fff;border:1px solid var(--border);border-radius:var(--r-card);
  padding:24px 22px;box-shadow:var(--sh-1);transition:box-shadow .2s ease,transform .2s ease;
}
.point:hover{box-shadow:var(--sh-2);transform:translateY(-2px)}
.point .ico{
  width:44px;height:44px;border-radius:12px;display:inline-flex;align-items:center;justify-content:center;
  background:rgba(255,106,43,.10);color:var(--brand-active);font-size:17px;margin-bottom:16px;
}
.point h3{font-size:17.5px;margin-bottom:8px}
.point p{margin:0;font-size:14.5px;line-height:1.8;color:var(--muted)}

/* ---------- 图文混排列表 ---------- */
.media-list{display:flex;flex-direction:column;gap:22px}
.media-row{
  display:grid;grid-template-columns:40% 60%;gap:0;overflow:hidden;
  background:#fff;border:1px solid var(--border);border-radius:var(--r-card);box-shadow:var(--sh-1);
  transition:box-shadow .2s ease,transform .2s ease;
}
.media-row:hover{box-shadow:var(--sh-2);transform:translateY(-2px)}
.media-figure{position:relative;min-height:210px;background:#EFEDE8}
.media-figure img{width:100%;height:100%;object-fit:cover;border-radius:0}
.media-figure .figure-tag{
  position:absolute;left:14px;top:14px;height:28px;padding:0 12px;border-radius:var(--r-pill);
  display:inline-flex;align-items:center;font-size:12.5px;font-weight:600;
  background:rgba(11,12,16,.72);color:#fff;backdrop-filter:blur(4px);
}
.media-body{padding:26px 30px 26px}
.media-body h2{font-size:23px;margin-bottom:12px}
.media-body p{margin:0 0 14px;color:var(--muted);font-size:15.5px;line-height:1.85}
.media-meta{display:flex;flex-wrap:wrap;align-items:center;gap:12px;font-size:13px;color:var(--muted)}
.media-meta .dot{width:4px;height:4px;border-radius:50%;background:#CFCAC2;display:inline-block}
.media-body .text-link{display:inline-flex;align-items:center;margin-top:16px}

/* ---------- 流程 ---------- */
.flow-band{background:#fff;border-top:1px solid var(--border);border-bottom:1px solid var(--border)}
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;counter-reset:step}
.step{position:relative;padding-top:26px}
.step::before{
  counter-increment:step;content:"0" counter(step);
  position:absolute;top:0;left:0;font-size:13px;font-weight:800;letter-spacing:.12em;color:var(--brand-active);
}
.step::after{content:"";position:absolute;top:8px;left:0;right:24px;height:1px;background:var(--border)}
.step h3{font-size:17.5px;margin:12px 0 8px}
.step p{margin:0;font-size:14.5px;color:var(--muted);line-height:1.8}

/* ---------- 排查对照 ---------- */
.pair-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.pair-card{background:#fff;border:1px solid var(--border);border-radius:var(--r-card);padding:8px 22px 18px;box-shadow:var(--sh-1)}
.pair-card h3{font-size:16px;padding:18px 0 12px;border-bottom:1px solid var(--border);margin-bottom:6px;display:flex;align-items:center;gap:10px}
.pair-card h3 i{color:var(--brand-active);font-size:14px}
.pair-card.pair-fix h3 i{color:#0E7C67}
.pair-row{display:grid;grid-template-columns:150px 1fr;gap:14px;padding:14px 0;border-bottom:1px dashed #EDEAE4}
.pair-row:last-child{border-bottom:0}
.pair-row dt{font-size:14px;font-weight:600;color:var(--text)}
.pair-row dd{margin:0;font-size:14.5px;color:var(--muted);line-height:1.8}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:900px}
.faq-item{background:#fff;border:1px solid var(--border);border-radius:var(--r-card);margin-bottom:12px;overflow:hidden;transition:box-shadow .2s ease}
.faq-item:hover{box-shadow:var(--sh-1)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  min-height:56px;padding:14px 22px;background:none;border:0;cursor:pointer;text-align:left;
  font-size:16px;font-weight:600;color:var(--text);
}
.faq-q .fa-plus{color:var(--brand-active);font-size:14px;transition:transform .22s ease;flex:0 0 auto}
.faq-item.open .fa-plus{transform:rotate(45deg)}
.faq-panel{max-height:0;overflow:hidden;transition:max-height .26s ease}
.faq-panel .inner{padding:0 22px 20px;background:#F7F5F1;font-size:15px;color:var(--muted);line-height:1.85}
.faq-panel .inner p{margin:18px 0 0}

/* ---------- CTA 带 ---------- */
.cta-band{background:var(--ink);color:#fff;border-radius:0;position:relative;overflow:hidden}
.cta-band .cta-bg{
  position:absolute;inset:0;background-image:url("/assets/images/backpic/back-3.webp");
  background-size:cover;background-position:center;opacity:.22;
}
.cta-band::after{content:"";position:absolute;inset:0;background:linear-gradient(100deg,rgba(11,12,16,.96),rgba(11,12,16,.78))}
.cta-inner{position:relative;z-index:1;padding:72px 0;display:grid;grid-template-columns:1.35fr 1fr;gap:44px;align-items:center}
.cta-inner h2{color:#fff;font-size:32px}
.cta-inner p{margin:16px 0 0;color:rgba(255,255,255,.78);font-size:16px;line-height:1.9}
.cta-actions{display:flex;flex-direction:column;gap:14px}
.cta-actions .row{display:flex;flex-wrap:wrap;gap:14px}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink);color:#9AA0AE;padding:64px 0 26px;margin-top:auto}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:36px}
.footer-col h4{font-size:14px;color:#E6E8ED;font-weight:700;margin-bottom:16px;letter-spacing:.04em}
.footer-col a{display:block;font-size:14px;color:#9AA0AE;margin-bottom:10px;transition:color .18s ease}
.footer-col a:hover{color:#fff}
.footer-brand p{font-size:14px;line-height:1.85;color:#8B919F;margin:16px 0 18px;max-width:320px}
.footer-qr{display:flex;align-items:center;gap:12px}
.footer-qr img{width:78px;height:78px;border-radius:10px;object-fit:cover;border:1px solid var(--line-dark)}
.footer-qr span{font-size:12.5px;line-height:1.6;color:#8B919F}
.footer-bottom{
  margin-top:44px;padding-top:18px;border-top:1px solid var(--line-dark);
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px;
  font-size:12px;color:#71767F;
}

/* ---------- 移动吸底 ---------- */
.mobile-dock{
  position:fixed;left:0;right:0;bottom:0;z-index:75;display:none;
  align-items:center;gap:12px;height:56px;padding:0 14px calc(0px + env(safe-area-inset-bottom));
  background:rgba(11,12,16,.97);border-top:1px solid var(--line-dark);
  transform:translateY(110%);transition:transform .24s ease;
}
.mobile-dock.show{transform:translateY(0)}
.mobile-dock .dock-text{flex:1 1 auto;color:#fff;font-size:13.5px;line-height:1.3}
.mobile-dock .dock-text small{display:block;color:#8B919F;font-size:11.5px}

/* ---------- 响应式 ---------- */
@media (max-width:1439px){
  .container{padding:0 28px}
}
@media (max-width:1279px){
  :root{--sidebar-w:76px}
  .sidebar-top{padding:0 14px;justify-content:center}
  .logo-text{display:none}
  .side-nav{padding:14px 10px;align-items:center}
  .nav-item{justify-content:center;padding:0;width:48px;height:48px}
  .side-nav .nav-label{
    display:none;position:absolute;left:62px;top:50%;transform:translateY(-50%);
    background:var(--ink-2);border:1px solid var(--line-dark);color:#fff;
    padding:6px 12px;border-radius:8px;font-size:13px;white-space:nowrap;z-index:20;
  }
  .side-nav .nav-item:hover .nav-label{display:block}
  .side-cta{width:48px;padding:0;font-size:0;gap:0}
  .side-cta i{font-size:16px}
  .sidebar-foot{display:none}
  .grid-4{grid-template-columns:repeat(2,1fr)}
  .steps{grid-template-columns:repeat(2,1fr);gap:28px}
  .intro-grid{grid-template-columns:1fr;gap:26px}
  .cta-inner{grid-template-columns:1fr;gap:30px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px}
}
@media (max-width:1023px){
  .app-sidebar{display:none}
  .app-main{margin-left:0;padding-top:var(--topbar-h);padding-bottom:80px}
  .topbar{display:flex}
  .mobile-dock{display:flex}
  .section{padding:64px 0}
  .section-tight{padding:44px 0}
  h1{font-size:32px}
  h2{font-size:26px}
  .hero-inner{padding:44px 0 56px}
  .page-hero .hero-sub{font-size:16px}
  .media-row{grid-template-columns:1fr}
  .media-figure{min-height:200px;aspect-ratio:16/10}
  .media-body{padding:22px 22px 24px}
  .pair-grid{grid-template-columns:1fr}
  .pair-row{grid-template-columns:1fr;gap:4px}
}
@media (max-width:767px){
  .container{padding:0 16px}
  h1{font-size:28px}
  h2{font-size:23px}
  .section{padding:56px 0}
  .grid-4{grid-template-columns:1fr;gap:16px}
  .intro-stat{grid-template-columns:1fr 1fr}
  .steps{grid-template-columns:1fr;gap:22px}
  .step::after{right:0}
  .hero-actions .btn{width:100%}
  .cta-inner h2{font-size:26px}
  .cta-actions .row{flex-direction:column}
  .cta-actions .row .btn{width:100%}
  .footer-grid{grid-template-columns:1fr;gap:26px}
  .section-head{flex-direction:column;align-items:flex-start;gap:12px;margin-bottom:26px}
}
@media (max-width:519px){
  .topbar .logo-text{max-width:118px;font-size:13px}
  .media-body h2{font-size:20px}
  .intro-stat{grid-template-columns:1fr}
}

/* roulang page: category2 */
:root{
  --obsidian:#0B0C10;
  --shell-2:#14161C;
  --line-dark:rgba(255,255,255,.08);
  --paper:#FBF8F4;
  --card:#FFFFFF;
  --ink:#24262E;
  --muted:#5B6070;
  --primary:#FF6A2B;
  --primary-hover:#E8551A;
  --primary-active:#D1480F;
  --link-deep:#C2410C;
  --jade:#21D4B4;
  --amber:#FFC53D;
  --danger:#E5484D;
  --success:#2FA36B;
  --border:#ECEAE5;
  --r-btn:10px;
  --r-card:14px;
  --r-img:12px;
  --shadow-sm:0 1px 2px rgba(11,12,16,.06);
  --shadow-md:0 1px 2px rgba(11,12,16,.06),0 10px 28px -14px rgba(11,12,16,.20);
  --side:236px;
}
*,*::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","Noto Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.85;
  letter-spacing:.01em;
  color:var(--ink);
  background:var(--paper);
}
img{max-width:100%;display:block;border:0}
a{color:var(--link-deep);text-decoration:none}
a:hover{text-decoration:underline}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:.01em}
p{margin:0}
:focus-visible{outline:2px solid var(--jade);outline-offset:2px;border-radius:4px}
.container{width:100%;max-width:1280px;margin:0 auto;padding:0 32px}

/* ============ 侧边导航 ============ */
.side-nav{
  position:fixed;top:0;left:0;bottom:0;width:var(--side);
  background:var(--obsidian);
  display:flex;flex-direction:column;gap:6px;
  padding:0 16px 20px;
  overflow-y:auto;z-index:80;
}
.side-brand{
  height:72px;display:flex;align-items:center;
  border-bottom:1px solid var(--line-dark);margin-bottom:14px;flex:none;
}
.logo{display:flex;align-items:center;gap:10px;text-decoration:none}
.logo:hover{text-decoration:none}
.logo-mark{
  width:32px;height:32px;flex:none;border-radius:9px;
  background:linear-gradient(135deg,#FF8A4C,#E8551A);
  color:#fff;display:grid;place-items:center;
  font-weight:800;font-size:17px;line-height:1;
}
.logo-text{color:#fff;font-size:16px;font-weight:700;white-space:nowrap}
.nav-item{
  position:relative;display:flex;align-items:center;gap:12px;
  height:44px;padding:0 14px;border-radius:10px;
  color:#9AA0AE;font-size:14.5px;font-weight:500;
  transition:background .18s ease,color .18s ease;
}
.nav-item i{width:18px;text-align:center;font-size:15px;flex:none}
.nav-item:hover{background:rgba(255,255,255,.06);color:#fff;text-decoration:none}
.nav-item.active{background:rgba(255,106,43,.12);color:#fff}
.nav-item.active::before{
  content:"";position:absolute;left:0;top:10px;bottom:10px;width:3px;
  border-radius:0 3px 3px 0;background:var(--primary);
}
.nav-label{white-space:nowrap}
.side-foot{
  margin-top:auto;padding-top:18px;border-top:1px solid var(--line-dark);
  color:#6E7480;font-size:11.5px;line-height:1.6;
}

/* ============ 顶部移动栏 / 抽屉 ============ */
.topbar{
  display:none;position:fixed;top:0;left:0;right:0;height:56px;z-index:90;
  align-items:center;gap:12px;padding:0 14px;
  background:rgba(11,12,16,.97);border-bottom:1px solid var(--line-dark);
  backdrop-filter:blur(10px);
}
.icon-btn{
  width:40px;height:40px;flex:none;border-radius:10px;
  display:grid;place-items:center;color:#fff;
  background:rgba(255,255,255,.07);transition:background .18s ease;
}
.icon-btn:hover{background:rgba(255,255,255,.14)}
.topbar .logo-text{font-size:15px}
.drawer-mask{
  position:fixed;inset:0;z-index:75;
  background:rgba(0,0,0,.55);
  opacity:0;visibility:hidden;transition:opacity .24s ease,visibility .24s ease;
}
.drawer-mask.show{opacity:1;visibility:visible}

/* ============ 主内容 ============ */
.shell{margin-left:var(--side);min-height:100vh;display:flex;flex-direction:column}
.shell > main{flex:1}

/* Hero */
.page-hero{
  position:relative;overflow:hidden;color:#fff;
  padding:60px 0 56px;
  background:url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(120deg,rgba(11,12,16,.88) 0%,rgba(11,12,16,.72) 60%,rgba(11,12,16,.62) 100%);
}
.page-hero .container{position:relative;z-index:1}
.breadcrumb{display:flex;align-items:center;flex-wrap:wrap;gap:8px;font-size:13px;color:rgba(255,255,255,.6);margin-bottom:18px}
.breadcrumb a{color:rgba(255,255,255,.78);text-decoration:none}
.breadcrumb a:hover{color:#fff;text-decoration:underline}
.breadcrumb .sep{color:rgba(255,255,255,.32)}
.breadcrumb .current{color:var(--primary);font-weight:600}
.page-hero h1{
  font-size:clamp(28px,4vw,44px);line-height:1.25;font-weight:800;
  margin-bottom:16px;letter-spacing:.01em;
}
.page-hero .lead{
  font-size:17px;line-height:1.7;color:rgba(255,255,255,.82);
  max-width:660px;margin-bottom:24px;
}
.hero-points{display:flex;flex-wrap:wrap;gap:10px}
.hero-points li{
  display:inline-flex;align-items:center;gap:8px;
  height:32px;padding:0 14px;border-radius:999px;
  background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.12);
  color:rgba(255,255,255,.9);font-size:13.5px;font-weight:500;
}
.hero-points li::before{
  content:"";width:6px;height:6px;border-radius:50%;background:var(--primary);flex:none;
}

/* 板块 */
.section{padding:72px 0}
.section + .section{padding-top:0}
.section-head{
  display:flex;align-items:flex-end;justify-content:space-between;gap:16px;
  margin-bottom:32px;flex-wrap:wrap;
}
.section-head h2{font-size:clamp(22px,2.4vw,30px);line-height:1.35;font-weight:700}
.section-head .more{font-size:14px;font-weight:600;color:var(--link-deep);white-space:nowrap}
.section-sub{margin-top:10px;font-size:15px;color:var(--muted);max-width:760px;line-height:1.8}

/* 引言与筛选 */
.intro-text{font-size:17px;line-height:1.85;color:var(--muted);max-width:880px;margin-bottom:26px}
.chip-row{display:flex;flex-wrap:wrap;gap:10px}
.chip{
  height:34px;padding:0 16px;border-radius:999px;
  border:1px solid var(--border);background:#fff;color:var(--muted);
  font-size:14px;font-weight:500;line-height:1;
  display:inline-flex;align-items:center;
  transition:background .18s ease,color .18s ease,border-color .18s ease;
}
.chip:hover{border-color:rgba(255,106,43,.45);color:var(--link-deep)}
.chip.is-active{background:rgba(255,106,43,.10);border-color:transparent;color:var(--link-deep);font-weight:600}

/* 卡片网格 */
.grid-cards{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.card{
  background:var(--card);border:1px solid var(--border);border-radius:var(--r-card);
  overflow:hidden;display:flex;flex-direction:column;
  box-shadow:var(--shadow-sm);
  transition:box-shadow .22s ease,transform .22s ease,border-color .22s ease;
}
.card:hover{box-shadow:var(--shadow-md);transform:translateY(-2px);border-color:#E2DED6}
.thumb{aspect-ratio:16/10;overflow:hidden;background:#EFECE6}
.thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease}
.card:hover .thumb img{transform:scale(1.04)}
.card-body{padding:18px 20px 20px;display:flex;flex-direction:column;gap:10px;flex:1}
.card h3{font-size:19px;line-height:1.5;font-weight:700}
.card h3 a{color:var(--ink);text-decoration:none}
.card h3 a:hover{color:var(--link-deep);text-decoration:none}
.card .desc{
  font-size:14.5px;line-height:1.75;color:var(--muted);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.badge{
  display:inline-flex;align-items:center;height:26px;padding:0 12px;
  border-radius:999px;background:rgba(255,106,43,.10);color:var(--link-deep);
  font-size:12.5px;font-weight:600;width:max-content;line-height:1;
}
.badge-jade{background:rgba(33,212,180,.14);color:#0E8C77}
.meta{display:flex;flex-wrap:wrap;gap:14px;font-size:12.5px;color:#8A8F9C;margin-top:auto}
.meta i{margin-right:5px;color:#B4B8C2}

/* 精选大卡 */
.feature-card{grid-column:span 2;flex-direction:row;align-items:stretch}
.feature-card .thumb{flex:0 0 44%;aspect-ratio:auto;height:auto;min-height:100%}
.feature-card .card-body{padding:26px 26px 24px;gap:12px}
.feature-card h3{font-size:23px;line-height:1.45}
.feature-card .desc{
  -webkit-line-clamp:3;font-size:15px;
}

/* 流程 */
.steps{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px}
.step{
  background:#fff;border:1px solid var(--border);border-radius:var(--r-card);
  padding:24px 22px;box-shadow:var(--shadow-sm);
  transition:box-shadow .22s ease,transform .22s ease;
}
.step:hover{box-shadow:var(--shadow-md);transform:translateY(-2px)}
.step-no{
  display:inline-block;font-size:13px;font-weight:800;letter-spacing:.1em;
  color:var(--primary);margin-bottom:12px;
}
.step h3{font-size:17px;line-height:1.5;margin-bottom:8px}
.step p{font-size:14.5px;line-height:1.75;color:var(--muted)}

/* 配置对照 */
.spec-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px}
.spec-card{
  background:#fff;border:1px solid var(--border);border-radius:var(--r-card);
  padding:26px 26px 14px;box-shadow:var(--shadow-sm);
}
.spec-card.recommended{
  border-color:rgba(255,106,43,.35);
  box-shadow:0 1px 2px rgba(11,12,16,.06),0 18px 36px -22px rgba(255,106,43,.55);
}
.spec-card h3{font-size:19px;line-height:1.5;margin-bottom:6px}
.spec-card .spec-note{font-size:13.5px;color:var(--muted);margin-bottom:14px}
.spec-row{
  display:flex;align-items:baseline;justify-content:space-between;gap:16px;
  padding:12px 0;border-bottom:1px dashed #EDEAE4;
}
.spec-row:last-child{border-bottom:0}
.spec-row dt{font-size:14px;color:var(--muted);flex:none}
.spec-row dd{margin:0;font-size:14.5px;font-weight:600;text-align:right}

/* FAQ */
.faq{background:#fff;border:1px solid var(--border);border-radius:var(--r-card);overflow:hidden;box-shadow:var(--shadow-sm)}
.faq-item + .faq-item{border-top:1px solid var(--border)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  min-height:60px;padding:15px 22px;text-align:left;
  font-size:16px;font-weight:600;color:var(--ink);line-height:1.5;
  transition:background .18s ease;
}
.faq-q:hover{background:#FAF8F5}
.faq-q i{color:var(--primary);font-size:14px;flex:none;transition:transform .22s ease}
.faq-item.open .faq-q i{transform:rotate(45deg)}
.faq-a{display:none;padding:2px 22px 20px;background:#F7F5F1}
.faq-item.open .faq-a{display:block}
.faq-a p{font-size:15px;line-height:1.85;color:var(--muted);max-width:900px}

/* CTA 带 */
.cta-band{
  position:relative;overflow:hidden;color:#fff;
  background:url('/assets/images/backpic/back-3.webp') center/cover no-repeat;
}
.cta-band::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(110deg,rgba(11,12,16,.92),rgba(11,12,16,.7));
}
.cta-inner{
  position:relative;z-index:1;
  display:flex;align-items:center;justify-content:space-between;gap:36px;
  padding-top:56px;padding-bottom:56px;flex-wrap:wrap;
}
.cta-band h2{font-size:clamp(22px,2.6vw,30px);line-height:1.35;margin-bottom:12px}
.cta-band p{font-size:15.5px;color:rgba(255,255,255,.78);max-width:560px;margin-bottom:22px;line-height:1.75}
.btn-row{display:flex;flex-wrap:wrap;gap:14px}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--r-btn);
  font-size:16px;font-weight:600;text-decoration:none;line-height:1;
  transition:background .18s ease,transform .18s ease,color .18s ease,box-shadow .18s ease,border-color .18s ease;
}
.btn:hover{text-decoration:none}
.btn-primary{background:var(--primary);color:#fff;box-shadow:0 12px 26px -14px rgba(255,106,43,.95)}
.btn-primary:hover{background:var(--primary-hover);color:#fff;transform:translateY(-1px)}
.btn-primary:active{background:var(--primary-active);transform:scale(.98)}
.btn-ghost{background:transparent;border:1px solid rgba(255,255,255,.3);color:#fff}
.btn-ghost:hover{background:rgba(255,255,255,.08);color:#fff}
.btn-light{background:#fff;color:var(--ink);border:1px solid #E2DED6}
.btn-light:hover{background:#F6F2EC;color:var(--ink)}
.btn:focus-visible{outline:2px solid var(--jade);outline-offset:2px}
.btn[disabled]{opacity:.45;cursor:not-allowed;transform:none}
.qr-box{
  display:flex;align-items:center;gap:14px;
  padding:16px 20px;border-radius:var(--r-card);
  background:rgba(255,255,255,.06);border:1px solid var(--line-dark);
}
.qr-box img{width:88px;height:88px;border-radius:10px;background:#fff;padding:5px;object-fit:cover}
.qr-box span{font-size:13.5px;color:rgba(255,255,255,.78);line-height:1.7}

/* 页脚 */
.site-footer{background:var(--obsidian);color:#9AA0AE;margin-top:0}
.footer-grid{
  display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:32px;
  padding:56px 0 32px;
}
.footer-col h4{color:rgba(255,255,255,.62);font-size:14px;font-weight:600;margin-bottom:14px}
.footer-col a{display:block;color:#9AA0AE;font-size:14px;padding:5px 0;transition:color .18s ease}
.footer-col a:hover{color:#fff;text-decoration:none}
.footer-brand .logo{margin-bottom:14px}
.footer-brand > p{font-size:14px;line-height:1.8;color:#9AA0AE;max-width:320px}
.footer-qr{display:flex;align-items:center;gap:12px;margin-top:18px}
.footer-qr img{width:72px;height:72px;border-radius:10px;background:#fff;padding:4px;object-fit:cover}
.footer-qr span{font-size:12.5px;line-height:1.7;color:#9AA0AE}
.footer-bottom{
  display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;
  padding:18px 0 28px;border-top:1px solid var(--line-dark);
  font-size:12px;color:#7B808E;
}

/* 移动吸底条 */
.sticky-dl{
  display:none;position:fixed;left:0;right:0;bottom:0;z-index:70;
  align-items:center;justify-content:space-between;gap:12px;
  padding:8px 16px calc(8px + env(safe-area-inset-bottom));
  background:rgba(11,12,16,.97);border-top:1px solid var(--line-dark);
  backdrop-filter:blur(10px);
  transform:translateY(115%);transition:transform .28s ease;
}
.sticky-dl.show{transform:translateY(0)}
.sticky-dl .sticky-text{color:#fff;font-size:14px;font-weight:600;line-height:1.4}
.sticky-dl .sticky-text small{display:block;color:#9AA0AE;font-size:11.5px;font-weight:400}
.sticky-dl .btn{height:40px;padding:0 18px;font-size:14.5px}

/* 平板 */
@media (max-width:1279px){
  :root{--side:76px}
  .side-nav{padding:0 10px 18px;align-items:center}
  .side-brand{width:100%;justify-content:center}
  .logo-text{display:none}
  .nav-item{justify-content:center;padding:0;width:48px}
  .nav-label{
    position:absolute;left:60px;top:50%;transform:translateY(-50%);
    background:var(--shell-2);color:#fff;border:1px solid var(--line-dark);
    padding:6px 12px;border-radius:8px;font-size:13px;
    opacity:0;visibility:hidden;transition:opacity .16s ease;white-space:nowrap;z-index:5;
  }
  .nav-item:hover .nav-label{opacity:1;visibility:visible}
  .side-foot{display:none}
  .container{padding:0 24px}
  .section{padding:64px 0}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
}
@media (max-width:1023px){
  .topbar{display:flex}
  .side-nav{
    width:280px;align-items:stretch;padding:14px 16px 20px;
    transform:translateX(-100%);
    transition:transform .24s ease;
    box-shadow:24px 0 48px -24px rgba(0,0,0,.7);
  }
  .side-nav.is-open{transform:translateX(0)}
  .side-brand{justify-content:flex-start}
  .logo-text{display:inline}
  .nav-item{justify-content:flex-start;padding:0 14px;width:auto;height:48px}
  .nav-label{position:static;transform:none;opacity:1;visibility:visible;background:none;border:0;padding:0;font-size:14.5px}
  .side-foot{display:block}
  .shell{margin-left:0;padding-top:56px}
  .grid-cards{grid-template-columns:repeat(2,minmax(0,1fr))}
  .feature-card{grid-column:span 2;flex-direction:column}
  .feature-card .thumb{flex:none;width:100%;aspect-ratio:16/10;min-height:0}
  .steps{grid-template-columns:repeat(2,minmax(0,1fr))}
  .spec-grid{grid-template-columns:1fr}
  .sticky-dl{display:flex}
  .site-footer{padding-bottom:72px}
  .cta-inner{padding-top:48px;padding-bottom:48px}
}
@media (max-width:767px){
  .container{padding:0 16px}
  .section{padding:52px 0}
  .page-hero{padding:44px 0 42px}
  .page-hero .lead{font-size:15.5px}
  .grid-cards{grid-template-columns:1fr}
  .feature-card{grid-column:span 1}
  .steps{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr;gap:24px}
  .footer-bottom{flex-direction:column}
  .cta-inner{flex-direction:column;align-items:flex-start;gap:26px}
  .btn-row{width:100%}
  .btn-row .btn{width:100%}
  .qr-box{width:100%}
  .intro-text{font-size:15.5px}
  .card h3{font-size:18px}
  .faq-q{font-size:15.5px;padding:14px 16px}
  .faq-a{padding:2px 16px 18px}
}

/* roulang page: category3 */
:root{
  --obsidian:#0B0C10;
  --shell-2:#14161C;
  --line-dark:rgba(255,255,255,.08);
  --bg:#FBF8F4;
  --card:#FFFFFF;
  --ink:#24262E;
  --ink-2:#5B6070;
  --ink-3:#8A8F9C;
  --primary:#FF6A2B;
  --primary-hover:#E8551A;
  --primary-active:#D1480F;
  --primary-ink:#C2410C;
  --teal:#21D4B4;
  --amber:#FFC53D;
  --danger:#E5484D;
  --success:#2FA36B;
  --border:#ECEAE5;
  --soft:#F7F5F1;
  --r-btn:10px;
  --r-card:14px;
  --r-img:12px;
  --sh-1:0 1px 2px rgba(11,12,16,.06);
  --sh-2:0 10px 28px -14px rgba(11,12,16,.20);
  --sh-3:0 16px 34px -16px rgba(11,12,16,.28);
  --ease:cubic-bezier(.4,.14,.3,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:"PingFang SC","HarmonyOS Sans SC","Noto Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.85;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;background:#EDE9E3}
a{color:var(--primary-ink);text-decoration:none;transition:color .18s var(--ease)}
a:hover{color:var(--primary-hover)}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.35;color:var(--ink)}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
button{font:inherit;color:inherit;border:0;background:none;cursor:pointer}
:focus-visible{outline:2px solid var(--teal);outline-offset:2px;border-radius:6px}
::selection{background:rgba(255,106,43,.22)}

/* ---------- 布局骨架 ---------- */
.container{max-width:1280px;margin:0 auto;padding:0 32px}
.main{margin-left:236px;min-height:100vh;display:flex;flex-direction:column}

/* ---------- 左侧导航 ---------- */
.side-nav{
  position:fixed;top:0;left:0;bottom:0;width:236px;
  background:var(--obsidian);
  border-right:1px solid var(--line-dark);
  display:flex;flex-direction:column;
  padding:0 14px 18px;
  z-index:80;
}
.side-brand{
  height:72px;display:flex;align-items:center;gap:10px;
  padding:0 6px;border-bottom:1px solid var(--line-dark);margin-bottom:16px;
}
.logo{display:inline-flex;align-items:center;gap:10px;color:#fff}
.logo:hover{color:#fff}
.logo-mark{
  width:32px;height:32px;flex:0 0 32px;border-radius:9px;
  background:linear-gradient(140deg,var(--primary),#FF9A5C);
  color:#fff;font-size:16px;font-weight:800;
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 6px 16px -8px rgba(255,106,43,.9);
}
.logo-text{font-size:15px;font-weight:700;letter-spacing:.02em;white-space:nowrap}
.nav-item{
  position:relative;display:flex;align-items:center;gap:12px;
  height:44px;border-radius:10px;padding:0 14px;margin-bottom:4px;
  color:#9AA0AE;font-size:14.5px;font-weight:500;transition:all .18s var(--ease);
}
.nav-item i{width:18px;text-align:center;font-size:15px}
.nav-item:hover{color:#fff;background:rgba(255,255,255,.06)}
.nav-item.active{
  color:#fff;background:rgba(255,106,43,.12);
}
.nav-item.active::before{
  content:"";position:absolute;left:0;top:9px;bottom:9px;width:3px;
  border-radius:0 3px 3px 0;background:var(--primary);
}
.side-foot{
  margin-top:auto;padding:14px 8px 0;border-top:1px solid var(--line-dark);
  font-size:11.5px;line-height:1.7;color:#6C7280;
}
.side-foot b{display:block;color:#9AA0AE;font-weight:600;font-size:12px;margin-bottom:2px}

/* ---------- 顶部栏（移动） ---------- */
.topbar{
  display:none;position:fixed;top:0;left:0;right:0;height:56px;z-index:90;
  background:rgba(11,12,16,.94);backdrop-filter:blur(8px);
  border-bottom:1px solid var(--line-dark);
  align-items:center;gap:12px;padding:0 16px;
}
.topbar .logo-text{font-size:14px}
.menu-btn{
  width:40px;height:40px;border-radius:10px;color:#E9E6E1;
  border:1px solid var(--line-dark);display:flex;align-items:center;justify-content:center;
}
.menu-btn:hover{background:rgba(255,255,255,.08)}
.drawer-mask{
  position:fixed;inset:0;background:rgba(0,0,0,.55);z-index:95;
  opacity:0;pointer-events:none;transition:opacity .24s var(--ease);
}
.drawer-mask.show{opacity:1;pointer-events:auto}

/* ---------- 面包屑 / 页头 ---------- */
.crumb{
  display:flex;align-items:center;gap:8px;flex-wrap:wrap;
  font-size:13px;color:var(--ink-3);padding:22px 0 0;
}
.crumb a{color:var(--ink-2)}
.crumb a:hover{color:var(--primary-ink)}
.crumb .sep{color:#C9C5BE}
.crumb .cur{color:var(--primary-ink);font-weight:600}

.page-head{
  position:relative;overflow:hidden;color:#fff;
  background:linear-gradient(115deg,rgba(11,12,16,.94),rgba(11,12,16,.78)),
             url("/assets/images/backpic/back-2.webp") center/cover no-repeat;
  border-bottom:1px solid var(--line-dark);
}
.page-head::after{
  content:"";position:absolute;right:-40px;top:-60px;width:280px;height:280px;
  background-image:radial-gradient(rgba(255,255,255,.42) 1px,transparent 1px);
  background-size:12px 12px;opacity:.10;pointer-events:none;
}
.page-head-inner{padding:34px 0 46px;position:relative;z-index:2;max-width:860px}
.page-head .crumb{padding-top:0;color:#8E93A0}
.page-head .crumb a{color:#B4B9C4}
.page-head .crumb a:hover{color:#fff}
.page-head .crumb .cur{color:#FFB48A}
.kicker{
  display:inline-flex;align-items:center;gap:8px;margin:18px 0 14px;
  font-size:12.5px;letter-spacing:.08em;color:#FFC9A8;
  background:rgba(255,106,43,.16);border:1px solid rgba(255,106,43,.34);
  padding:5px 12px;border-radius:999px;
}
.page-title{
  font-size:clamp(28px,4vw,44px);line-height:1.25;font-weight:800;
  letter-spacing:.01em;color:#fff;
}
.page-intro{
  margin-top:16px;font-size:16px;line-height:1.85;color:#C3C8D2;max-width:760px;
}
.chip-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px}
.chip{
  display:inline-flex;align-items:center;gap:6px;height:30px;padding:0 14px;
  border-radius:999px;font-size:13px;font-weight:500;
  background:rgba(255,106,43,.10);color:var(--primary-ink);
  border:1px solid transparent;transition:all .18s var(--ease);
}
button.chip{cursor:pointer}
button.chip:hover{background:rgba(255,106,43,.18);color:var(--primary-active)}
button.chip:active{transform:translateY(1px)}
.page-head .chip{
  background:rgba(255,255,255,.08);color:#E4E6EB;border-color:rgba(255,255,255,.14);
}
.page-head .chip:hover{background:rgba(255,255,255,.16);color:#fff}

/* ---------- 数据条 ---------- */
.stat-strip{padding:34px 0 0}
.stat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.stat-card{
  background:var(--card);border:1px solid var(--border);border-radius:var(--r-card);
  padding:20px 22px;box-shadow:var(--sh-1);transition:all .2s var(--ease);
}
.stat-card:hover{box-shadow:var(--sh-2);transform:translateY(-2px)}
.stat-card .k{font-size:12.5px;color:var(--ink-3);display:flex;align-items:center;gap:7px}
.stat-card .k i{color:var(--primary)}
.stat-card .v{font-size:23px;font-weight:800;margin-top:8px;letter-spacing:.01em}
.stat-card .v small{font-size:13px;font-weight:600;color:var(--ink-2);margin-left:4px}
.stat-card .d{font-size:13px;color:var(--ink-2);margin-top:6px;line-height:1.7}

/* ---------- 分栏主体 ---------- */
.section{padding:56px 0}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:26px}
.section-head h2{font-size:clamp(22px,2.6vw,30px)}
.section-head p{font-size:14px;color:var(--ink-2);margin-top:8px;max-width:640px}
.section-link{font-size:14px;font-weight:600;white-space:nowrap}

.split{display:grid;grid-template-columns:minmax(0,2fr) minmax(0,1fr);gap:36px;align-items:start}
.split-main{min-width:0}
.split-aside{min-width:0}
.aside-sticky{position:sticky;top:24px;display:flex;flex-direction:column;gap:20px}

/* 条目列表（纯文本 + 细分割线） */
.entry-list{border-top:1px solid var(--border)}
.entry-item{
  padding:20px 2px 20px;border-bottom:1px solid var(--border);
  transition:background .18s var(--ease);
}
.entry-item:hover{background:rgba(255,106,43,.035)}
.entry-top{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin-bottom:8px}
.entry-idx{
  font-size:12px;font-weight:800;color:var(--primary-ink);
  background:rgba(255,106,43,.10);border-radius:6px;padding:2px 8px;letter-spacing:.04em;
}
.entry-item h3{font-size:20px;line-height:1.5;font-weight:700}
.entry-item .desc{margin-top:8px;font-size:14.5px;color:var(--ink-2);line-height:1.8}
.entry-meta{
  display:flex;align-items:center;gap:14px;flex-wrap:wrap;margin-top:12px;
  font-size:13px;color:var(--ink-3);
}
.entry-meta .tag{
  color:#0F766E;background:rgba(33,212,180,.14);border-radius:999px;
  padding:2px 10px;font-size:12.5px;font-weight:500;
}
.entry-meta .go{font-weight:600;font-size:13.5px}

/* 步骤 */
.steps{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}
.step{
  position:relative;background:var(--card);border:1px solid var(--border);
  border-radius:var(--r-card);padding:22px 22px 22px 70px;box-shadow:var(--sh-1);
  transition:all .2s var(--ease);
}
.step:hover{box-shadow:var(--sh-2);transform:translateY(-2px)}
.step-num{
  position:absolute;left:22px;top:22px;width:32px;height:32px;border-radius:10px;
  background:var(--obsidian);color:#fff;font-size:14px;font-weight:700;
  display:flex;align-items:center;justify-content:center;
}
.step h3{font-size:17px;margin-bottom:8px}
.step p{font-size:14px;color:var(--ink-2);line-height:1.8}

/* 图文条目 */
.media-row{
  display:grid;grid-template-columns:44% 1fr;gap:24px;align-items:center;
  background:var(--card);border:1px solid var(--border);border-radius:var(--r-card);
  padding:18px;box-shadow:var(--sh-1);margin-bottom:20px;
  transition:all .2s var(--ease);
}
.media-row:hover{box-shadow:var(--sh-2);transform:translateY(-2px)}
.media-row img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:var(--r-img)}
.media-row h3{font-size:19px;margin-bottom:10px}
.media-row p{font-size:14.5px;color:var(--ink-2);line-height:1.8}
.media-row .mini{margin-top:12px;display:flex;gap:14px;flex-wrap:wrap;font-size:13px;color:var(--ink-3)}

/* 对照块 */
.compare{
  background:var(--card);border:1px solid var(--border);border-radius:var(--r-card);
  padding:6px 24px 10px;box-shadow:var(--sh-1);
}
.compare-row{
  display:grid;grid-template-columns:160px 1fr;gap:18px;align-items:start;
  padding:16px 0;border-bottom:1px solid var(--border);
}
.compare-row:last-child{border-bottom:0}
.compare-row .lb{
  font-size:13px;font-weight:600;color:var(--ink-2);
  background:var(--soft);border-radius:8px;padding:5px 10px;text-align:center;
}
.compare-row .val{font-size:14.5px;line-height:1.8;color:var(--ink)}
.compare-row .val b{color:var(--primary-ink)}

/* ---------- 侧栏卡片 ---------- */
.aside-card{
  background:var(--card);border:1px solid var(--border);border-radius:var(--r-card);
  padding:20px;box-shadow:var(--sh-1);
}
.aside-card h3{font-size:15px;margin-bottom:14px;display:flex;align-items:center;gap:8px}
.aside-card h3 i{color:var(--primary);font-size:14px}
.mini-chips{display:flex;flex-wrap:wrap;gap:8px}
.mini-chips .chip{height:28px;padding:0 12px;font-size:12.5px;cursor:pointer}
.hot-list li{border-bottom:1px dashed var(--border);padding:11px 0}
.hot-list li:last-child{border-bottom:0;padding-bottom:0}
.hot-list a{display:flex;gap:10px;font-size:14px;color:var(--ink);line-height:1.6}
.hot-list a:hover{color:var(--primary-ink)}
.hot-list .n{
  flex:0 0 20px;height:20px;border-radius:6px;background:var(--soft);
  color:var(--ink-2);font-size:11.5px;font-weight:700;
  display:flex;align-items:center;justify-content:center;margin-top:2px;
}
.hot-list a:hover .n{background:rgba(255,106,43,.14);color:var(--primary-ink)}
.cta-mini{
  background:linear-gradient(150deg,#101218,#1B1E27);
  border:1px solid var(--line-dark);color:#fff;border-radius:var(--r-card);
  padding:20px;box-shadow:var(--sh-2);
}
.cta-mini h3{color:#fff;font-size:16px;display:block}
.cta-mini p{color:#A9AEBA;font-size:13px;line-height:1.75;margin:10px 0 16px}
.cta-mini img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:var(--r-img);margin-bottom:16px}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--r-btn);
  font-size:16px;font-weight:600;letter-spacing:.01em;
  transition:all .18s var(--ease);cursor:pointer;border:1px solid transparent;
}
.btn i{font-size:15px}
.btn-primary{background:var(--primary);color:#fff;box-shadow:0 10px 22px -12px rgba(255,106,43,.9)}
.btn-primary:hover{background:var(--primary-hover);color:#fff;transform:translateY(-1px);box-shadow:0 14px 26px -12px rgba(255,106,43,.95)}
.btn-primary:active{background:var(--primary-active);transform:scale(.98)}
.btn-ghost{background:transparent;color:var(--ink);border-color:#DBD7D0}
.btn-ghost:hover{background:rgba(11,12,16,.04);color:var(--ink);border-color:#C6C1B9}
.btn-ghost:active{transform:scale(.98)}
.btn-dark-ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.28)}
.btn-dark-ghost:hover{background:rgba(255,255,255,.10);color:#fff}
.btn[disabled],.btn.is-disabled{opacity:.45;pointer-events:none}
.btn-block{width:100%}
.btn-group{display:flex;gap:14px;flex-wrap:wrap}

/* ---------- FAQ ---------- */
.faq{display:flex;flex-direction:column;gap:12px;max-width:900px}
.faq-item{
  background:var(--card);border:1px solid var(--border);border-radius:var(--r-card);
  overflow:hidden;box-shadow:var(--sh-1);transition:box-shadow .2s var(--ease);
}
.faq-item:hover{box-shadow:var(--sh-2)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  min-height:56px;padding:14px 22px;text-align:left;font-size:16px;font-weight:600;color:var(--ink);
}
.faq-q:hover{color:var(--primary-ink)}
.faq-q .plus{
  flex:0 0 26px;height:26px;border-radius:8px;background:var(--soft);
  display:flex;align-items:center;justify-content:center;color:var(--ink-2);
  transition:transform .24s var(--ease),background .18s var(--ease);font-size:12px;
}
.faq-item.open .faq-q .plus{transform:rotate(45deg);background:rgba(255,106,43,.14);color:var(--primary-ink)}
.faq-a{
  max-height:0;overflow:hidden;transition:max-height .3s var(--ease);
  background:var(--soft);
}
.faq-item.open .faq-a{max-height:340px}
.faq-a div{padding:4px 22px 20px;font-size:14.5px;line-height:1.85;color:var(--ink-2)}

/* ---------- CTA 带 ---------- */
.cta-band{
  background:linear-gradient(120deg,#0B0C10,#1A1D26);
  border-radius:18px;padding:44px 44px;color:#fff;
  display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;
  box-shadow:var(--sh-3);
}
.cta-band h2{color:#fff;font-size:clamp(21px,2.4vw,28px)}
.cta-band p{color:#A9AEBA;font-size:14.5px;margin-top:10px;max-width:560px;line-height:1.8}
.cta-band .btn-group{margin-top:0}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--obsidian);color:#9AA0AE;margin-top:56px;padding:56px 0 0}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:34px}
.footer-col h4{color:#D7DAE1;font-size:14px;font-weight:600;margin-bottom:16px}
.footer-col a{display:block;font-size:14px;color:#9AA0AE;padding:6px 0}
.footer-col a:hover{color:#fff}
.footer-brand .logo{margin-bottom:14px}
.footer-brand p{font-size:13.5px;line-height:1.8;max-width:320px}
.footer-qr{display:flex;align-items:center;gap:12px;margin-top:18px}
.footer-qr img{width:76px;height:76px;object-fit:cover;border-radius:10px;border:1px solid var(--line-dark)}
.footer-qr span{font-size:12.5px;line-height:1.6;color:#8A8F9C}
.footer-bottom{
  margin-top:40px;border-top:1px solid var(--line-dark);padding:20px 0 26px;
  display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;font-size:12px;color:#6C7280;
}

/* ---------- 吸底下载条 ---------- */
.sticky-bar{
  display:none;position:fixed;left:0;right:0;bottom:0;z-index:85;height:56px;
  background:rgba(11,12,16,.97);border-top:1px solid var(--line-dark);
  align-items:center;justify-content:space-between;gap:14px;
  padding:0 16px calc(0px + env(safe-area-inset-bottom));
}
.sticky-bar .sb-txt{color:#D7DAE1;font-size:13.5px;font-weight:600}
.sticky-bar .btn{height:38px;padding:0 16px;font-size:14px;border-radius:9px}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .container{padding:0 24px}
}
@media (min-width:1024px) and (max-width:1279px){
  .side-nav{width:76px;padding:0 10px 16px;align-items:center}
  .side-brand{justify-content:center;padding:0}
  .logo-text{display:none}
  .nav-item{justify-content:center;padding:0;width:52px}
  .nav-item i{font-size:17px}
  .nav-label{
    position:absolute;left:64px;top:50%;transform:translateY(-50%) translateX(-6px);
    background:var(--shell-2);border:1px solid var(--line-dark);color:#fff;
    padding:6px 12px;border-radius:8px;font-size:13px;white-space:nowrap;
    opacity:0;pointer-events:none;transition:all .18s var(--ease);
  }
  .nav-item:hover .nav-label{opacity:1;transform:translateY(-50%) translateX(0)}
  .side-foot{display:none}
  .main{margin-left:76px}
}
@media (max-width:1023px){
  .topbar{display:flex}
  .side-nav{
    width:280px;transform:translateX(-100%);
    transition:transform .24s var(--ease);z-index:100;padding-top:8px;
  }
  .side-nav.open{transform:translateX(0)}
  .main{margin-left:0;padding-top:56px;padding-bottom:72px}
  .container{padding:0 16px}
  .stat-grid{grid-template-columns:repeat(2,1fr);gap:16px}
  .split{grid-template-columns:1fr;gap:28px}
  .aside-sticky{position:static}
  .section{padding:48px 0}
  .steps{grid-template-columns:1fr}
  .media-row{grid-template-columns:1fr}
  .media-row img{aspect-ratio:16/9}
  .compare-row{grid-template-columns:1fr;gap:10px}
  .compare-row .lb{text-align:left}
  .cta-band{padding:32px 24px;border-radius:16px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:26px}
  .page-head-inner{padding:22px 0 36px}
  .sticky-bar.show{display:flex}
}
@media (max-width:640px){
  body{font-size:15px}
  .stat-grid{grid-template-columns:1fr}
  .btn-group{flex-direction:column;align-items:stretch;width:100%}
  .btn-group .btn{width:100%}
  .section-head{flex-direction:column;align-items:flex-start;gap:10px}
  .entry-item h3{font-size:18px}
  .footer-grid{grid-template-columns:1fr;gap:24px}
  .footer-bottom{flex-direction:column;gap:6px}
  .cta-band{padding:28px 20px}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none!important;animation:none!important}
}