/* roulang page: index */
:root{
  --bg-deep:#070B16;
  --bg-deep-2:#0C1526;
  --bg-panel:#101C31;
  --brand:#FF7A18;
  --brand-2:#FFB347;
  --accent:#21D4FD;
  --ink-1:#EDF3FF;
  --ink-2:#A9B8D0;
  --ink-3:#6E7F9B;
  --light-ink-1:#0F1A2B;
  --light-ink-2:#55637A;
  --line-dark:rgba(255,255,255,.12);
  --line-light:#E6EBF3;
  --glass:linear-gradient(160deg,rgba(255,255,255,.09),rgba(255,255,255,.028));
  --r-sm:10px; --r-md:14px; --r-lg:20px; --r-xl:28px; --r-pill:999px;
  --shadow-dark:0 24px 60px -30px rgba(0,0,0,.85);
  --shadow-light:0 1px 2px rgba(13,23,41,.04);
  --shadow-light-hover:0 12px 32px -12px rgba(13,23,41,.16);
  --ease:cubic-bezier(.2,.7,.3,1);
  --sec:96px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:"HarmonyOS Sans SC","PingFang SC","Source Han Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  font-size:16px;line-height:1.8;color:var(--ink-1);
  background:var(--bg-deep);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none;transition:color .2s var(--ease)}
a:hover{color:var(--brand-2)}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
button{font-family:inherit;border:0;background:none;cursor:pointer}
input,textarea{font-family:inherit}
:focus-visible{outline:2px solid var(--brand-2);outline-offset:2px}
.container{max-width:1240px;padding-left:24px;padding-right:24px;margin:0 auto}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:1030;background:#fff;
  border-bottom:1px solid #E9EDF4;
  box-shadow:0 4px 16px rgba(15,23,42,.04);
  transition:box-shadow .22s var(--ease);
}
.site-header.is-stuck{box-shadow:0 10px 28px rgba(15,23,42,.12)}
.nav-inner{display:flex;align-items:center;gap:24px;height:68px}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0}
.brand-mark{
  width:28px;height:28px;border-radius:8px;flex-shrink:0;
  background:linear-gradient(135deg,var(--brand),var(--brand-2));
  box-shadow:0 8px 18px -8px rgba(255,122,24,.75);
  display:flex;align-items:center;justify-content:center;
}
.brand-mark svg{width:16px;height:16px;fill:#fff}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-text strong{font-size:17px;font-weight:700;color:var(--light-ink-1);letter-spacing:.01em}
.brand-text em{font-style:normal;font-size:11.5px;color:var(--light-ink-2);letter-spacing:.14em}
.nav-links{display:flex;align-items:center;gap:4px;margin-left:8px}
.nav-links a{
  position:relative;padding:8px 14px;font-size:15px;color:var(--light-ink-2);
  border-radius:8px;white-space:nowrap;
}
.nav-links a::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;
  background:linear-gradient(90deg,var(--brand),var(--brand-2));
  border-radius:2px;transform:scaleX(0);transform-origin:left;
  transition:transform .22s var(--ease);
}
.nav-links a:hover{color:var(--light-ink-1)}
.nav-links a:hover::after{transform:scaleX(1)}
.nav-links a.is-active{color:var(--light-ink-1);font-weight:600}
.nav-links a.is-active::after{transform:scaleX(1)}
.nav-right{display:flex;align-items:center;gap:14px;margin-left:auto}
.search-box{
  display:flex;align-items:center;gap:8px;width:230px;height:40px;
  padding:0 14px;border-radius:var(--r-pill);background:#F3F5F9;
  border:1px solid transparent;transition:border-color .2s var(--ease),background .2s var(--ease);
}
.search-box i{font-size:13px;color:#8A97AC}
.search-box input{
  border:0;background:transparent;outline:none;width:100%;
  font-size:14px;color:var(--light-ink-1);
}
.search-box input::placeholder{color:#98A4B8}
.search-box:focus-within{border-color:var(--brand);background:#fff;box-shadow:0 0 0 3px rgba(255,122,24,.14)}
.btn-brand{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:0 22px;height:46px;border-radius:var(--r-md);
  font-size:15px;font-weight:600;color:#fff;white-space:nowrap;
  background:linear-gradient(135deg,var(--brand),var(--brand-2));
  box-shadow:0 10px 30px -10px rgba(255,122,24,.6),inset 0 0 0 1px rgba(255,255,255,.18);
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),filter .2s var(--ease);
}
.btn-brand:hover{color:#fff;transform:translateY(-2px);filter:brightness(1.06);box-shadow:0 16px 34px -10px rgba(255,122,24,.72),inset 0 0 0 1px rgba(255,255,255,.24)}
.btn-brand:active{transform:scale(.98)}
.btn-brand.btn-sm-nav{height:40px;padding:0 20px;font-size:14px;border-radius:12px}
.btn-ghost-dark{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;border-radius:var(--r-md);font-size:15px;font-weight:500;
  color:var(--ink-1);border:1px solid rgba(255,255,255,.22);background:transparent;
  transition:background .2s var(--ease),border-color .2s var(--ease),transform .2s var(--ease);
}
.btn-ghost-dark:hover{background:rgba(255,255,255,.08);color:#fff;border-color:rgba(255,255,255,.34);transform:translateY(-2px)}
.btn-ghost-light{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;border-radius:var(--r-md);font-size:15px;font-weight:500;
  color:var(--light-ink-1);background:#fff;border:1px solid #E1E7F0;
  transition:box-shadow .2s var(--ease),transform .2s var(--ease),border-color .2s var(--ease);
}
.btn-ghost-light:hover{color:var(--brand);border-color:var(--brand);transform:translateY(-2px);box-shadow:var(--shadow-light-hover)}
.btn-text{
  display:inline-flex;align-items:center;gap:8px;font-size:14.5px;font-weight:600;color:var(--brand);
}
.btn-text i{transition:transform .2s var(--ease)}
.btn-text:hover i{transform:translateX(4px)}
.menu-toggle{
  width:40px;height:40px;border-radius:10px;margin-left:auto;
  display:flex;align-items:center;justify-content:center;
  border:1px solid #E9EDF4;color:var(--light-ink-1);background:#fff;font-size:16px;
}
.mobile-drawer{
  position:fixed;inset:0;z-index:1050;background:#fff;
  display:flex;flex-direction:column;
  transform:translateX(100%);transition:transform .28s var(--ease);
}
.mobile-drawer.is-open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;height:60px;padding:0 18px;border-bottom:1px solid #E9EDF4}
.drawer-head .close-btn{width:40px;height:40px;border-radius:10px;background:#F3F5F9;display:flex;align-items:center;justify-content:center;color:var(--light-ink-1)}
.drawer-nav{flex:1;overflow-y:auto;padding:10px 0}
.drawer-nav a{display:flex;align-items:center;height:52px;padding:0 20px;font-size:15.5px;color:var(--light-ink-1);border-bottom:1px solid #F2F5F9}
.drawer-nav a.is-active{color:var(--brand);font-weight:600;background:#FFF7F0}
.drawer-foot{padding:16px 18px 24px;border-top:1px solid #E9EDF4}
.drawer-foot .btn-brand{width:100%}

/* ---------- 通用区块 ---------- */
.section{padding:var(--sec) 0;position:relative}
.section-dark{background:var(--bg-deep)}
.section-dark-2{background:var(--bg-deep-2)}
.section-light{background:#F5F7FB;color:var(--light-ink-1)}
.sec-head{max-width:760px;margin-bottom:44px}
.sec-head.center{margin-left:auto;margin-right:auto;text-align:center}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:12.5px;letter-spacing:.12em;
  color:var(--accent);text-transform:uppercase;margin-bottom:14px;
}
.eyebrow::before{content:"";width:22px;height:1px;background:var(--accent);opacity:.7}
.sec-head h2{
  font-size:clamp(24px,2.6vw,36px);line-height:1.25;font-weight:700;letter-spacing:.01em;
}
.section-light .sec-head h2{color:var(--light-ink-1)}
.sec-head p{margin-top:14px;font-size:15px;color:var(--ink-2);max-width:640px}
.section-light .sec-head p{color:var(--light-ink-2)}
.divider-line{height:1px;background:var(--line-dark);border:0;margin:0}
.pill{
  display:inline-flex;align-items:center;gap:6px;height:26px;padding:0 12px;border-radius:var(--r-pill);
  font-size:12px;letter-spacing:.02em;background:rgba(33,212,253,.14);color:#9FE9FF;
}
.pill-orange{background:rgba(255,122,24,.16);color:var(--brand-2)}
.glass{
  background:var(--glass);
  backdrop-filter:blur(16px) saturate(140%);
  -webkit-backdrop-filter:blur(16px) saturate(140%);
  border:1px solid rgba(255,255,255,.14);
  box-shadow:var(--shadow-dark),inset 0 1px 0 rgba(255,255,255,.18);
  border-radius:var(--r-lg);
  transition:transform .22s var(--ease),border-color .22s var(--ease),box-shadow .22s var(--ease);
}
.glass:hover{transform:translateY(-4px);border-color:rgba(255,255,255,.24);box-shadow:0 30px 64px -30px rgba(0,0,0,.9),0 0 0 1px rgba(255,122,24,.14),inset 0 1px 0 rgba(255,255,255,.22)}
.icon-box{
  width:40px;height:40px;border-radius:12px;display:flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,var(--brand),var(--brand-2));color:#fff;font-size:16px;
  box-shadow:0 10px 22px -12px rgba(255,122,24,.8);flex-shrink:0;
}
.icon-box.cyan{background:linear-gradient(135deg,#1B9FD8,var(--accent));box-shadow:0 10px 22px -12px rgba(33,212,253,.8)}
.num-tag{font-family:"Inter",system-ui,sans-serif;font-variant-numeric:tabular-nums;font-weight:700;color:var(--brand);letter-spacing:.04em}

/* ---------- Hero ---------- */
.hero{
  position:relative;color:var(--ink-1);overflow:hidden;
  padding:88px 0 96px;
  background-image:linear-gradient(180deg,rgba(6,10,20,.72),rgba(6,10,20,.96)),url('/assets/images/backpic/back-1.webp');
  background-size:cover;background-position:center;
  border-bottom:1px solid rgba(255,255,255,.1);
}
.hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.35;
  background-image:linear-gradient(rgba(255,255,255,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.05) 1px,transparent 1px);
  background-size:64px 64px;
  mask-image:radial-gradient(ellipse at 70% 20%,#000,transparent 72%);
  -webkit-mask-image:radial-gradient(ellipse at 70% 20%,#000,transparent 72%);
}
.hero .container{position:relative;z-index:2}
.hero h1{
  font-size:clamp(30px,4vw,54px);line-height:1.2;font-weight:800;letter-spacing:.01em;
  margin-bottom:20px;
}
.hero h1 span{background:linear-gradient(120deg,var(--brand),var(--brand-2));-webkit-background-clip:text;background-clip:text;color:transparent}
.hero-sub{font-size:16.5px;color:var(--ink-2);max-width:600px;margin-bottom:30px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:22px}
.hero-note{font-size:13px;color:var(--ink-3);display:flex;align-items:center;gap:8px}
.hero-note i{color:var(--accent)}
.hero-facts{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px}
.entry-panel{
  position:relative;padding:30px 28px 26px;border-radius:var(--r-xl);
  background:linear-gradient(160deg,rgba(255,255,255,.09),rgba(255,255,255,.028));
  backdrop-filter:blur(16px) saturate(140%);
  -webkit-backdrop-filter:blur(16px) saturate(140%);
  border:1px solid rgba(255,255,255,.14);
  box-shadow:var(--shadow-dark),inset 0 1px 0 rgba(255,255,255,.18);
}
.entry-panel .panel-badge{position:absolute;top:-12px;right:22px}
.entry-panel h3{font-size:19px;font-weight:700;margin-bottom:6px}
.entry-panel .panel-desc{font-size:13.5px;color:var(--ink-2);margin-bottom:20px}
.field{margin-bottom:14px}
.field label{display:block;font-size:13px;color:var(--ink-2);margin-bottom:7px}
.field .input-wrap{
  display:flex;align-items:center;gap:10px;height:46px;padding:0 14px;
  border-radius:var(--r-sm);background:rgba(255,255,255,.05);
  border:1px solid rgba(255,255,255,.14);
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.field .input-wrap i{font-size:13px;color:var(--ink-3)}
.field .input-wrap input{flex:1;border:0;background:transparent;outline:none;color:var(--ink-1);font-size:14.5px}
.field .input-wrap input::placeholder{color:var(--ink-3)}
.field .input-wrap:focus-within{border-color:var(--brand);box-shadow:0 0 0 3px rgba(255,122,24,.2)}
.entry-panel .btn-brand{width:100%}
.panel-links{display:flex;justify-content:space-between;gap:12px;margin-top:16px;font-size:13px;color:var(--ink-2)}
.panel-links a{color:var(--accent)}
.panel-links a:hover{color:var(--brand-2)}

/* ---------- 信任数据条 ---------- */
.stats-band{
  border-radius:var(--r-xl);padding:28px 32px;margin-top:-46px;position:relative;z-index:5;
  background:var(--glass);backdrop-filter:blur(16px) saturate(140%);
  -webkit-backdrop-filter:blur(16px) saturate(140%);
  border:1px solid rgba(255,255,255,.14);
  box-shadow:var(--shadow-dark),inset 0 1px 0 rgba(255,255,255,.18);
}
.stat-item{text-align:left;padding:6px 8px}
.stat-num{
  font-family:"Inter",system-ui,sans-serif;font-variant-numeric:tabular-nums;
  font-size:30px;font-weight:700;color:var(--brand-2);line-height:1.2;
}
.stat-num small{font-size:14px;margin-left:2px;color:var(--brand-2);font-weight:600}
.stat-label{font-size:13px;color:var(--ink-2);margin-top:6px}

/* ---------- Bento 功能区 ---------- */
.bento-main{padding:26px;display:flex;flex-direction:column;gap:18px;height:100%}
.bento-main .cover{border-radius:var(--r-md);overflow:hidden;aspect-ratio:16/9;position:relative}
.bento-main .cover img{width:100%;height:100%;object-fit:cover}
.bento-main .cover::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,transparent 40%,rgba(7,11,22,.7))}
.bento-main h3{font-size:21px;font-weight:700;margin-top:4px}
.bento-main p{font-size:14.5px;color:var(--ink-2)}
.check-list{display:flex;flex-direction:column;gap:10px;margin-top:4px}
.check-list li{display:flex;gap:10px;font-size:14px;color:var(--ink-2);line-height:1.7}
.check-list i{color:var(--brand);font-size:13px;margin-top:6px;flex-shrink:0}
.bento-side{padding:22px;height:100%;display:flex;flex-direction:column;gap:12px}
.bento-side h4{font-size:17px;font-weight:700}
.bento-side p{font-size:13.8px;color:var(--ink-2)}
.bento-side .mini{margin-top:auto;font-size:13px;color:var(--accent)}
.bento-sm{padding:22px;height:100%}
.bento-sm h4{font-size:16.5px;font-weight:700;margin:14px 0 8px}
.bento-sm p{font-size:13.8px;color:var(--ink-2)}

/* ---------- 使用场景 ---------- */
.scene-track{display:flex;gap:20px}
.scene-card{
  flex:1 1 0;padding:24px 22px;border-radius:var(--r-lg);
  background:var(--glass);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);
  border:1px solid rgba(255,255,255,.14);box-shadow:var(--shadow-dark);
  scroll-snap-align:start;transition:transform .22s var(--ease),border-color .22s var(--ease);
}
.scene-card:hover{transform:translateY(-4px);border-color:rgba(255,255,255,.24)}
.scene-card .num{font-family:"Inter",system-ui,sans-serif;font-variant-numeric:tabular-nums;font-size:13px;letter-spacing:.16em;color:var(--brand)}
.scene-card h3{font-size:17px;font-weight:700;margin:12px 0 8px}
.scene-card p{font-size:13.8px;color:var(--ink-2)}
.scene-card .scene-icon{margin-top:16px;font-size:18px;color:var(--accent)}

/* ---------- 案例 ---------- */
.case-main{padding:0;overflow:hidden}
.case-main .cover{aspect-ratio:16/9;overflow:hidden}
.case-main .cover img{width:100%;height:100%;object-fit:cover}
.case-body{padding:24px}
.case-body h3{font-size:19px;font-weight:700;margin-bottom:10px}
.case-body p{font-size:14.5px;color:var(--ink-2)}
.result-bar{display:flex;flex-wrap:wrap;gap:22px;margin-top:18px;padding-top:16px;border-top:1px solid var(--line-dark)}
.result-bar div span{display:block;font-family:"Inter",system-ui,sans-serif;font-variant-numeric:tabular-nums;font-size:22px;font-weight:700;color:var(--brand-2)}
.result-bar div em{font-style:normal;font-size:12.5px;color:var(--ink-3)}
.case-mini{padding:20px;display:flex;gap:14px;align-items:flex-start;height:100%}
.case-mini .avatar{width:38px;height:38px;border-radius:50%;flex-shrink:0;background:linear-gradient(135deg,#1B9FD8,var(--accent));display:flex;align-items:center;justify-content:center;color:#fff;font-size:14px;font-weight:700}
.case-mini .txt{font-size:13.8px;color:var(--ink-2)}
.case-mini .meta{font-size:12px;color:var(--ink-3);margin-top:8px;display:flex;align-items:center;gap:8px}
.case-mini .meta i{color:var(--brand)}

/* ---------- 登录方式（浅色） ---------- */
.plan-card{
  background:#fff;border:1px solid var(--line-light);border-radius:var(--r-lg);
  padding:28px 26px;height:100%;display:flex;flex-direction:column;
  box-shadow:var(--shadow-light);
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.plan-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-light-hover)}
.plan-card .plan-index{font-family:"Inter",system-ui,sans-serif;font-variant-numeric:tabular-nums;font-size:38px;font-weight:800;color:var(--light-ink-1);line-height:1}
.plan-card .plan-index span{font-size:13px;font-weight:500;color:var(--light-ink-2);margin-left:8px;letter-spacing:.06em}
.plan-card h3{font-size:19px;font-weight:700;color:var(--light-ink-1);margin:16px 0 8px}
.plan-card>p{font-size:14px;color:var(--light-ink-2);margin-bottom:18px}
.plan-list{display:flex;flex-direction:column;gap:11px;margin-bottom:24px;flex:1}
.plan-list li{display:flex;gap:10px;font-size:14px;color:#3A4759;line-height:1.7}
.plan-list i{color:var(--brand);font-size:12.5px;margin-top:6px;flex-shrink:0}
.plan-card .btn-brand,.plan-card .btn-ghost-light{width:100%}
.plan-card.is-featured{border:1.5px solid var(--brand);box-shadow:0 18px 44px -22px rgba(255,122,24,.55);position:relative}
.plan-card.is-featured .featured-pill{position:absolute;top:-13px;left:26px}
.plan-note{font-size:12.5px;color:var(--light-ink-2);margin-top:26px;text-align:center}

/* ---------- 最新信息 ---------- */
.news-card{
  display:flex;flex-direction:column;height:100%;overflow:hidden;border-radius:var(--r-lg);
  background:var(--glass);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);
  border:1px solid rgba(255,255,255,.14);box-shadow:var(--shadow-dark);
  transition:transform .22s var(--ease),border-color .22s var(--ease),box-shadow .22s var(--ease);
}
.news-card:hover{transform:translateY(-4px);border-color:rgba(255,255,255,.24);box-shadow:0 30px 64px -30px rgba(0,0,0,.9)}
.news-card .cover{aspect-ratio:16/9;overflow:hidden}
.news-card .cover img{width:100%;height:100%;object-fit:cover;transition:transform .4s var(--ease)}
.news-card:hover .cover img{transform:scale(1.04)}
.news-body{padding:20px 22px 22px;display:flex;flex-direction:column;flex:1;gap:10px}
.news-body h3{font-size:16.5px;font-weight:700;line-height:1.55;color:var(--ink-1);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-body p{font-size:13.8px;color:var(--ink-2);
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.news-meta{margin-top:auto;display:flex;align-items:center;gap:10px;font-size:12.5px;color:var(--ink-3);padding-top:10px;border-top:1px solid var(--line-dark)}
.news-meta .dot{width:3px;height:3px;border-radius:50%;background:var(--ink-3)}
.empty-state{padding:52px 32px;text-align:center;border-radius:var(--r-lg);
  background:var(--glass);border:1px solid rgba(255,255,255,.14);backdrop-filter:blur(16px)}
.empty-state i{font-size:26px;color:var(--accent);margin-bottom:14px;display:block}
.empty-state p{color:var(--ink-2);font-size:14.5px;margin-bottom:18px}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:880px;margin:0 auto}
.accordion-item{
  background:var(--glass)!important;border:1px solid rgba(255,255,255,.14)!important;
  border-radius:var(--r-md)!important;margin-bottom:12px;overflow:hidden;
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
}
.accordion-button{
  background:transparent!important;color:var(--ink-1)!important;font-size:16px;font-weight:600;
  padding:18px 22px 18px 22px;box-shadow:none!important;position:relative;
}
.accordion-button::before{
  content:"";position:absolute;left:0;top:14px;bottom:14px;width:3px;border-radius:2px;
  background:linear-gradient(180deg,var(--brand),var(--brand-2));
}
.accordion-button::after{
  background-image:none!important;content:"\f067";font-family:"Font Awesome 6 Free";font-weight:900;
  color:var(--brand);font-size:13px;width:auto;height:auto;transform:none;transition:transform .22s var(--ease);
}
.accordion-button:not(.collapsed)::after{transform:rotate(45deg)}
.accordion-button:not(.collapsed){color:var(--brand-2)!important}
.accordion-body{padding:0 22px 20px;color:var(--ink-2);font-size:14.5px}

/* ---------- CTA ---------- */
.cta-band{
  position:relative;overflow:hidden;border-radius:var(--r-xl);
  padding:56px 48px;text-align:center;
  background:radial-gradient(circle at 50% 0%,rgba(255,122,24,.22),transparent 62%),linear-gradient(160deg,#0B1424,#070B16);
  border:1px solid rgba(255,255,255,.12);
}
.cta-band h2{font-size:clamp(22px,2.4vw,30px);font-weight:700;margin-bottom:14px}
.cta-band p{color:var(--ink-2);font-size:15px;max-width:620px;margin:0 auto 28px}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;justify-content:center}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--bg-deep);border-top:1px solid rgba(255,255,255,.1);padding:64px 0 28px}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.footer-brand .brand-text strong{color:var(--ink-1)}
.footer-brand .brand-text em{color:var(--ink-3)}
.footer-desc{font-size:13.5px;color:var(--ink-3);max-width:320px}
.footer-col h4{font-size:14.5px;font-weight:700;color:var(--ink-1);margin-bottom:16px}
.footer-col a{display:block;font-size:13.5px;color:var(--ink-2);padding:5px 0}
.footer-col a:hover{color:var(--brand-2)}
.footer-contact{font-size:13.5px;color:var(--ink-2);line-height:2}
.footer-contact span{color:var(--ink-3)}
.footer-bottom{
  margin-top:44px;padding-top:22px;border-top:1px solid rgba(255,255,255,.08);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:13px;color:var(--ink-3);
}
.footer-bottom a{color:var(--ink-3)}
.footer-bottom a:hover{color:var(--brand-2)}
.to-top{
  position:fixed;right:24px;bottom:24px;width:44px;height:44px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;z-index:1040;
  background:rgba(255,255,255,.08);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);
  border:1px solid rgba(255,255,255,.18);color:var(--ink-1);
  opacity:0;visibility:hidden;transform:translateY(8px);
  transition:opacity .24s var(--ease),transform .24s var(--ease),visibility .24s var(--ease);
}
.to-top.is-show{opacity:1;visibility:visible;transform:translateY(0)}
.to-top:hover{color:var(--brand-2);border-color:rgba(255,122,24,.5)}

/* ---------- 响应式 ---------- */
@media (min-width:1400px){.container{max-width:1280px}}
@media (max-width:1199px){.container{max-width:1200px}}
@media (max-width:991px){
  :root{--sec:72px}
  .nav-links{display:none}
  .nav-right{display:none}
  .brand-text strong{font-size:15.5px}
  .hero{padding:64px 0 72px}
  .entry-panel{margin-top:34px}
  .stats-band{margin-top:8px}
  .scene-track{flex-wrap:wrap}
  .scene-card{flex:1 1 calc(50% - 10px)}
}
@media (max-width:767px){
  :root{--sec:56px}
  .container{padding-left:18px;padding-right:18px}
  .hero h1{font-size:30px}
  .hero-actions .btn-brand,.hero-actions .btn-ghost-dark{width:100%}
  .cta-actions .btn-brand,.cta-actions .btn-ghost-dark{width:100%}
  .stats-band{padding:22px 18px}
  .scene-track{flex-wrap:nowrap;overflow-x:auto;scroll-snap-type:x mandatory;padding-bottom:8px;margin:0 -18px;padding-left:18px;padding-right:18px}
  .scene-card{flex:0 0 260px}
  .cta-band{padding:38px 22px}
  .plan-note{text-align:left}
  .hero::after{display:none}
}
@media (max-width:420px){
  .plan-card .plan-index{font-size:32px}
  .news-meta .hide-xs{display:none}
  .footer-bottom{flex-direction:column}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
  .glass:hover,.news-card:hover,.scene-card:hover,.plan-card:hover{transform:none}
}

/* roulang page: article */
:root{
  --bg-deep:#070B16;
  --bg-deep-2:#0C1526;
  --bg-panel:#101C31;
  --brand:#FF7A18;
  --brand-2:#FFB347;
  --accent:#21D4FD;
  --ink-1:#EDF3FF;
  --ink-2:#A9B8D0;
  --ink-3:#6E7F9B;
  --light-ink-1:#0F1A2B;
  --light-ink-2:#55637A;
  --line-dark:rgba(255,255,255,.10);
  --line-dark-2:rgba(255,255,255,.16);
  --line-light:#E6EBF3;
  --surface-light:#FFFFFF;
  --surface-light-2:#F5F7FB;
  --r-sm:10px;
  --r-md:14px;
  --r-lg:20px;
  --r-xl:28px;
  --r-pill:999px;
  --shadow-light:0 1px 2px rgba(13,23,41,.04);
  --shadow-light-hover:0 12px 32px -12px rgba(13,23,41,.16);
  --shadow-dark:0 24px 60px -30px rgba(0,0,0,.85);
  --dur:220ms;
  --ease:cubic-bezier(.2,.7,.3,1);
  --bs-primary:#FF7A18;
  --bs-primary-rgb:255,122,24;
  --bs-body-bg:#070B16;
  --bs-body-color:#DCE6F7;
  --bs-link-color:#21D4FD;
  --bs-link-hover-color:#FFB347;
  --bs-border-radius:14px;
  --bs-font-sans-serif:"HarmonyOS Sans SC","PingFang SC","Source Han Sans SC","Microsoft YaHei",system-ui,sans-serif;
}
*{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg-deep);
  color:var(--ink-1);
  font-family:"HarmonyOS Sans SC","PingFang SC","Source Han Sans SC","Microsoft YaHei",system-ui,sans-serif;
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
}
a{color:var(--accent);text-decoration:none;transition:color var(--dur) var(--ease);}
a:hover{color:var(--brand-2);}
img{max-width:100%;display:block;}
button,input{font-family:inherit;}
h1,h2,h3,h4{margin:0;letter-spacing:.015em;font-weight:700;color:var(--ink-1);}
p{margin:0 0 16px;}
:focus-visible{outline:2px solid var(--brand-2);outline-offset:2px;}
.container{max-width:1240px;padding-left:24px;padding-right:24px;margin-left:auto;margin-right:auto;}
@media (min-width:1400px){.container{max-width:1280px;}}
@media (max-width:767.98px){.container{padding-left:18px;padding-right:18px;}}

/* ---------- Header ---------- */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:var(--surface-light);
  border-bottom:1px solid #E9EDF4;
  box-shadow:0 4px 16px rgba(15,23,42,.04);
  transition:box-shadow var(--dur) var(--ease);
}
.site-header.is-stuck{box-shadow:0 8px 26px rgba(15,23,42,.12);}
.header-inner{display:flex;align-items:center;gap:24px;height:68px;}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;text-decoration:none;}
.brand-mark{
  width:30px;height:30px;border-radius:8px;flex:0 0 auto;
  display:inline-flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,var(--brand),var(--brand-2));
  box-shadow:0 8px 18px -10px rgba(255,122,24,.9);
}
.brand-mark svg{width:18px;height:18px;fill:#fff;}
.brand-text{display:flex;flex-direction:column;line-height:1.15;}
.brand-text strong{font-size:18px;font-weight:700;color:var(--light-ink-1);letter-spacing:.01em;}
.brand-text em{font-style:normal;font-size:12px;color:var(--light-ink-2);letter-spacing:.06em;}
.nav-links{display:flex;align-items:center;gap:26px;margin-left:auto;}
.nav-links a{position:relative;font-size:15px;color:var(--light-ink-2);padding:6px 0;white-space:nowrap;}
.nav-links a::after{
  content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--brand),var(--brand-2));
  transform:scaleX(0);transform-origin:left;transition:transform var(--dur) var(--ease);
}
.nav-links a:hover{color:var(--light-ink-1);}
.nav-links a:hover::after{transform:scaleX(1);}
.nav-links a.is-active{color:var(--light-ink-1);font-weight:700;}
.nav-links a.is-active::after{transform:scaleX(1);}
.header-actions{display:flex;align-items:center;gap:14px;flex:0 0 auto;}
.search-box{
  display:flex;align-items:center;gap:8px;width:220px;height:40px;padding:0 14px;
  border-radius:var(--r-pill);background:#F3F5F9;border:1px solid transparent;
  transition:border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease),background var(--dur) var(--ease);
}
.search-box svg{width:16px;height:16px;fill:#8A98AE;flex:0 0 auto;}
.search-box:focus-within{background:#fff;border-color:var(--brand);box-shadow:0 0 0 3px rgba(255,122,24,.16);}
.search-box input{border:0;background:transparent;outline:none;width:100%;font-size:14px;color:var(--light-ink-1);}
.search-box input::placeholder{color:#93A0B5;}
.nav-toggle{
  display:none;width:40px;height:40px;border-radius:12px;border:1px solid var(--line-light);
  background:#fff;flex-direction:column;align-items:center;justify-content:center;gap:4px;cursor:pointer;
}
.nav-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:var(--light-ink-1);transition:transform var(--dur) var(--ease),opacity var(--dur) var(--ease);}
.nav-toggle.is-open span:nth-child(1){transform:translateY(6px) rotate(45deg);}
.nav-toggle.is-open span:nth-child(2){opacity:0;}
.nav-toggle.is-open span:nth-child(3){transform:translateY(-6px) rotate(-45deg);}
.mobile-drawer{
  position:fixed;left:0;right:0;top:56px;bottom:0;z-index:1029;background:#fff;
  padding:18px 18px 120px;overflow-y:auto;
  opacity:0;visibility:hidden;transform:translateY(-10px);
  transition:opacity var(--dur) var(--ease),transform var(--dur) var(--ease),visibility var(--dur);
}
.mobile-drawer.is-open{opacity:1;visibility:visible;transform:translateY(0);}
.drawer-search{display:flex;align-items:center;height:44px;border-radius:var(--r-pill);background:#F3F5F9;padding:0 16px;margin-bottom:18px;}
.drawer-search input{border:0;background:transparent;outline:none;width:100%;font-size:15px;color:var(--light-ink-1);}
.drawer-nav{display:flex;flex-direction:column;}
.drawer-nav a{
  height:52px;display:flex;align-items:center;font-size:16px;color:var(--light-ink-1);
  border-bottom:1px solid var(--line-light);
}
.drawer-nav a.is-active{color:var(--brand);font-weight:700;}
.drawer-cta{width:100%;margin-top:22px;}

/* ---------- Buttons ---------- */
.btn-brand,.btn-ghost-dark,.btn-ghost-light{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 24px;border-radius:var(--r-md);font-size:15px;font-weight:600;
  border:0;cursor:pointer;text-decoration:none;white-space:nowrap;
  transition:transform var(--dur) var(--ease),box-shadow var(--dur) var(--ease),background var(--dur) var(--ease),color var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.btn-brand{
  color:#fff;
  background:linear-gradient(135deg,var(--brand),var(--brand-2));
  box-shadow:0 10px 30px -10px rgba(255,122,24,.6),inset 0 0 0 1px rgba(255,255,255,.18);
}
.btn-brand:hover{color:#fff;filter:brightness(1.06);transform:translateY(-2px);box-shadow:0 14px 34px -10px rgba(255,122,24,.72),inset 0 0 0 1px rgba(255,255,255,.22);}
.btn-brand:active{transform:scale(.98);}
.btn-ghost-dark{
  color:var(--ink-1);background:transparent;border:1px solid rgba(255,255,255,.22);
}
.btn-ghost-dark:hover{color:#fff;background:rgba(255,255,255,.08);transform:translateY(-2px);}
.btn-ghost-light{color:var(--light-ink-1);background:#fff;border:1px solid #E1E7F0;box-shadow:var(--shadow-light);}
.btn-ghost-light:hover{color:var(--light-ink-1);box-shadow:var(--shadow-light-hover);transform:translateY(-2px);}
.btn-sm{height:40px;padding:0 18px;font-size:14px;}
.btn-xs{height:34px;padding:0 14px;font-size:13px;border-radius:10px;}
.link-arrow{display:inline-flex;align-items:center;gap:6px;color:var(--brand-2);font-size:14.5px;font-weight:600;}
.link-arrow svg{width:16px;height:16px;fill:currentColor;transition:transform var(--dur) var(--ease);}
.link-arrow:hover svg{transform:translateX(4px);}

/* ---------- Pills & badges ---------- */
.pill{
  display:inline-flex;align-items:center;gap:6px;height:26px;padding:0 12px;border-radius:var(--r-pill);
  font-size:12px;letter-spacing:.03em;background:rgba(33,212,253,.14);color:#9FE9FF;
}
.pill-brand{background:rgba(255,122,24,.18);color:#FFC489;}
.pill-line{border:1px solid var(--line-dark-2);background:rgba(255,255,255,.06);color:var(--ink-2);}

/* ---------- Article hero ---------- */
.article-hero{
  position:relative;
  padding:48px 0 44px;
  background:
    linear-gradient(180deg,rgba(6,10,20,.84),rgba(6,10,20,.97)),
    url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
  border-bottom:1px solid var(--line-dark);
}
.article-hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(255,255,255,.035) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.035) 1px,transparent 1px);
  background-size:64px 64px;
  mask-image:radial-gradient(60% 70% at 30% 20%,#000 10%,transparent 100%);
}
.article-hero>.container{position:relative;z-index:1;}
.breadcrumb-bar{
  display:flex;align-items:center;flex-wrap:wrap;gap:8px;
  font-size:12.5px;color:var(--ink-3);margin-bottom:20px;
}
.breadcrumb-bar a{color:var(--ink-3);}
.breadcrumb-bar a:hover{color:var(--brand-2);}
.breadcrumb-bar span{color:rgba(255,255,255,.22);}
.breadcrumb-bar em{font-style:normal;color:var(--ink-1);max-width:340px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
.article-title{
  font-size:clamp(28px,3.4vw,44px);line-height:1.28;max-width:900px;margin-bottom:22px;
}
.article-meta{
  display:flex;align-items:center;flex-wrap:wrap;gap:14px;
  font-size:13px;color:var(--ink-2);
  padding-top:20px;border-top:1px solid rgba(255,255,255,.12);
}
.article-meta .dot{width:4px;height:4px;border-radius:50%;background:var(--ink-3);}

/* ---------- Article body ---------- */
.article-main{padding:56px 0 88px;background:var(--bg-deep);}
.article-card{
  max-width:800px;margin:0 auto;
  background:linear-gradient(160deg,rgba(255,255,255,.075),rgba(255,255,255,.025));
  border:1px solid var(--line-dark-2);
  box-shadow:var(--shadow-dark);
  border-radius:var(--r-xl);
  padding:40px;
  backdrop-filter:blur(16px) saturate(140%);
  inset:0 0 0 0;
}
.article-body{font-size:17px;line-height:1.9;color:#DCE6F7;overflow-wrap:break-word;word-break:break-word;}
.article-body>*:first-child{margin-top:0;}
.article-body p{margin:0 0 18px;}
.article-body h2{
  font-size:24px;line-height:1.45;color:var(--ink-1);margin:40px 0 16px;position:relative;padding-left:14px;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.22em;bottom:.22em;width:3px;border-radius:2px;
  background:linear-gradient(180deg,var(--brand),var(--brand-2));
}
.article-body h3{font-size:19px;color:var(--brand-2);margin:28px 0 12px;}
.article-body h4{font-size:17px;color:var(--ink-1);margin:22px 0 10px;}
.article-body ul,.article-body ol{padding-left:22px;margin:0 0 18px;}
.article-body li{margin-bottom:8px;}
.article-body li::marker{color:var(--brand);}
.article-body blockquote{
  margin:24px 0;padding:18px 20px;border-left:3px solid var(--brand);
  background:rgba(255,255,255,.05);border-radius:0 var(--r-md) var(--r-md) 0;color:var(--ink-2);
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body img{border-radius:16px;margin:24px auto;height:auto;}
.article-body a{color:var(--accent);text-decoration:underline;text-decoration-color:rgba(33,212,253,.4);text-underline-offset:3px;}
.article-body a:hover{color:var(--brand-2);}
.article-body hr{border:0;border-top:1px solid var(--line-dark);margin:32px 0;}
.article-body table{
  display:block;width:100%;max-width:100%;overflow-x:auto;border-collapse:collapse;margin:24px 0;font-size:15px;
}
.article-body th,.article-body td{border:1px solid rgba(255,255,255,.14);padding:10px 14px;text-align:left;white-space:nowrap;}
.article-body th{background:rgba(255,255,255,.06);color:var(--ink-1);font-weight:600;}
.article-body pre{
  background:#0A1224;border:1px solid rgba(255,255,255,.12);border-radius:var(--r-md);
  padding:16px;overflow-x:auto;font-family:ui-monospace,Menlo,Consolas,monospace;font-size:14px;line-height:1.7;color:#B9D4F5;
}
.article-body code{font-family:ui-monospace,Menlo,Consolas,monospace;font-size:14px;color:#9FE9FF;background:rgba(33,212,253,.10);padding:2px 6px;border-radius:6px;}
.article-body pre code{background:none;padding:0;color:inherit;}
.article-body figcaption{font-size:12.5px;color:var(--ink-3);text-align:center;margin-top:-12px;margin-bottom:24px;}

.empty-state{text-align:center;padding:40px 16px;}
.empty-icon{
  width:56px;height:56px;margin:0 auto 18px;border-radius:18px;display:flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,var(--brand),var(--brand-2));
}
.empty-icon svg{width:26px;height:26px;fill:#fff;}
.empty-state h2{font-size:20px;margin-bottom:10px;}
.empty-state p{color:var(--ink-2);font-size:14.5px;margin-bottom:20px;}

/* ---------- Article footer bits ---------- */
.article-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:32px;padding-top:24px;border-top:1px solid var(--line-dark);}
.article-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:24px;}
.side-card{
  background:linear-gradient(160deg,rgba(255,255,255,.075),rgba(255,255,255,.025));
  border:1px solid var(--line-dark-2);border-radius:var(--r-lg);padding:24px;
  box-shadow:var(--shadow-dark);margin-bottom:20px;
}
.side-card h3{font-size:16px;margin-bottom:14px;}
.side-list{list-style:none;padding:0;margin:0;counter-reset:side;}
.side-list li{counter-increment:side;margin-bottom:12px;}
.side-list a{display:flex;gap:10px;font-size:14px;color:var(--ink-2);line-height:1.6;}
.side-list a::before{
  content:counter(side,decimal-leading-zero);
  font-family:Inter,system-ui,sans-serif;font-variant-numeric:tabular-nums;
  font-size:12px;color:var(--brand-2);padding-top:2px;flex:0 0 auto;
}
.side-list a:hover{color:var(--ink-1);}
.side-note{font-size:13px;color:var(--ink-3);line-height:1.7;}

/* ---------- Post nav ---------- */
.post-nav{max-width:800px;margin:24px auto 0;display:grid;grid-template-columns:1fr 1fr;gap:20px;}
.post-nav-card{
  display:flex;flex-direction:column;gap:6px;padding:20px 22px;border-radius:var(--r-lg);
  background:linear-gradient(160deg,rgba(255,255,255,.07),rgba(255,255,255,.025));
  border:1px solid var(--line-dark-2);color:var(--ink-1);
  transition:transform var(--dur) var(--ease),border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.post-nav-card:hover{transform:translateY(-4px);border-color:rgba(255,255,255,.28);box-shadow:0 24px 50px -30px rgba(255,122,24,.5);color:#fff;}
.post-nav-card span{font-size:12.5px;color:var(--ink-3);letter-spacing:.04em;}
.post-nav-card strong{font-size:16px;font-weight:600;line-height:1.5;}
.post-nav-card em{font-style:normal;font-size:13px;color:var(--brand-2);}

/* ---------- Section heads ---------- */
.section{padding:88px 0;}
.section-alt{background:var(--bg-deep-2);border-top:1px solid var(--line-dark);border-bottom:1px solid var(--line-dark);}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:36px;}
.section-head h2{font-size:clamp(24px,2.4vw,32px);line-height:1.3;}
.section-head p{font-size:14px;color:var(--ink-3);margin:8px 0 0;}

/* ---------- Content cards ---------- */
.content-card{
  height:100%;display:flex;flex-direction:column;overflow:hidden;border-radius:var(--r-lg);
  background:var(--bg-panel);border:1px solid var(--line-dark-2);
  box-shadow:var(--shadow-dark);text-decoration:none;color:inherit;
  transition:transform var(--dur) var(--ease),border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.content-card:hover{transform:translateY(-4px);border-color:rgba(255,255,255,.28);box-shadow:0 28px 60px -30px rgba(255,122,24,.45);color:inherit;}
.content-card .thumb{position:relative;aspect-ratio:16/9;overflow:hidden;}
.content-card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform 420ms var(--ease);}
.content-card:hover .thumb img{transform:scale(1.04);}
.content-card .thumb::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(7,11,22,0) 40%,rgba(7,11,22,.55) 100%);}
.content-card .body{padding:20px 22px 22px;display:flex;flex-direction:column;flex:1 1 auto;}
.content-card h3{font-size:17.5px;line-height:1.55;margin:12px 0 10px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.content-card p{font-size:14.5px;line-height:1.75;color:var(--ink-2);margin:0 0 16px;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;}
.card-meta{display:flex;align-items:center;gap:10px;font-size:12.5px;color:var(--ink-3);margin-top:auto;}
.card-meta .dot{width:3px;height:3px;border-radius:50%;background:var(--ink-3);}

/* ---------- CTA strip ---------- */
.cta-strip{
  position:relative;padding:72px 0;background:var(--bg-deep);border-top:1px solid var(--line-dark);overflow:hidden;
}
.cta-strip::before{
  content:"";position:absolute;left:50%;top:50%;width:760px;height:420px;transform:translate(-50%,-50%);
  background:radial-gradient(closest-side,rgba(255,122,24,.28),transparent 72%);pointer-events:none;
}
.cta-inner{position:relative;z-index:1;display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;}
.cta-inner h2{font-size:clamp(22px,2.4vw,30px);margin-bottom:10px;}
.cta-inner p{font-size:14.5px;color:var(--ink-2);margin:0;max-width:560px;}
.cta-buttons{display:flex;gap:14px;flex-wrap:wrap;}

/* ---------- Footer ---------- */
.site-footer{background:var(--bg-deep);border-top:1px solid rgba(255,255,255,.1);padding:64px 0 28px;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-brand .brand-text strong{font-size:17px;color:var(--ink-1);}
.footer-brand .brand-text em{font-size:12px;color:var(--ink-3);font-style:normal;}
.footer-desc{font-size:13.5px;color:var(--ink-3);line-height:1.8;margin:0;}
.footer-col{display:flex;flex-direction:column;gap:10px;}
.footer-col h4{font-size:14px;letter-spacing:.06em;color:var(--ink-1);margin-bottom:6px;}
.footer-col a{font-size:13.5px;color:var(--ink-2);}
.footer-col a:hover{color:var(--brand-2);}
.footer-contact{display:flex;flex-direction:column;gap:8px;font-size:13.5px;color:var(--ink-2);line-height:1.7;}
.footer-contact span{color:var(--ink-3);}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:14px;flex-wrap:wrap;
  margin-top:44px;padding-top:22px;border-top:1px solid rgba(255,255,255,.08);
  font-size:13px;color:var(--ink-3);
}
.to-top{
  position:fixed;right:22px;bottom:26px;width:44px;height:44px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;cursor:pointer;z-index:1040;
  background:linear-gradient(160deg,rgba(255,255,255,.14),rgba(255,255,255,.05));
  border:1px solid var(--line-dark-2);backdrop-filter:blur(12px);
  opacity:0;visibility:hidden;transform:translateY(10px);
  transition:opacity var(--dur) var(--ease),transform var(--dur) var(--ease),visibility var(--dur);
}
.to-top.is-show{opacity:1;visibility:visible;transform:translateY(0);}
.to-top svg{width:18px;height:18px;fill:var(--ink-1);}

/* ---------- Responsive ---------- */
@media (max-width:1399.98px){
  .article-card{padding:36px;}
}
@media (max-width:1199.98px){
  .article-side{display:none;}
}
@media (max-width:991.98px){
  .nav-links{display:none;}
  .search-box{display:none;}
  .nav-toggle{display:flex;}
  .header-inner{height:56px;}
  .brand-text strong{font-size:16px;}
  .section{padding:72px 0;}
  .article-main{padding:44px 0 72px;}
  .post-nav{grid-template-columns:1fr;}
  .cta-inner{justify-content:flex-start;}
}
@media (min-width:992px){
  .mobile-drawer{display:none;}
}
@media (max-width:767.98px){
  .section{padding:56px 0;}
  .article-hero{padding:32px 0 30px;}
  .article-card{padding:22px 20px;border-radius:var(--r-lg);}
  .article-body{font-size:16.5px;line-height:1.85;}
  .breadcrumb-bar em{max-width:180px;}
  .article-body h2{font-size:21px;margin-top:32px;}
  .article-body h3{font-size:17.5px;}
  .btn-brand,.btn-ghost-dark,.btn-ghost-light{width:100%;}
  .cta-buttons{width:100%;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}
@media (max-width:420px){
  .article-body{font-size:16px;}
  .content-card h3{font-size:16.5px;}
  .card-meta .dot,.card-meta .meta-hide{display:none;}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;}
  html{scroll-behavior:auto;}
}

/* roulang page: category1 */
:root{
  --bg-deep:#070B16;
  --bg-deep-2:#0C1526;
  --bg-panel:#101C31;
  --brand:#FF7A18;
  --brand-2:#FFB347;
  --accent:#21D4FD;
  --ink-1:#EDF3FF;
  --ink-2:#A9B8D0;
  --ink-3:#6E7F9B;
  --light-ink-1:#0F1A2B;
  --light-ink-2:#55637A;
  --line:#E6EBF3;
  --r-sm:10px;
  --r-md:14px;
  --r-lg:20px;
  --r-xl:28px;
  --r-pill:999px;
  --ease:cubic-bezier(.2,.7,.3,1);
  --shadow-dark:0 24px 60px -30px rgba(0,0,0,.85);
  --shadow-light:0 1px 2px rgba(13,23,41,.04);
  --bs-body-bg:transparent;
  --bs-body-color:#EDF3FF;
  --bs-link-color:#FFB347;
  --bs-link-hover-color:#FF7A18;
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg-deep);
  color:var(--ink-1);
  font-family:"HarmonyOS Sans SC","PingFang SC","Source Han Sans SC","Microsoft YaHei",system-ui,sans-serif;
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none;transition:color .2s var(--ease),opacity .2s var(--ease)}
button,input{font:inherit}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:.01em;line-height:1.25}
p{margin:0}
:focus-visible{outline:2px solid var(--brand-2);outline-offset:2px}

.skip-link{position:absolute;left:-9999px;top:0;background:#fff;color:var(--light-ink-1);padding:10px 16px;border-radius:0 0 10px 0;z-index:2000}
.skip-link:focus{left:0}

.container{width:100%;max-width:1240px;margin-inline:auto;padding-inline:24px}
@media (min-width:1400px){.container{max-width:1280px}}
@media (max-width:767.98px){.container{padding-inline:18px}}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:1030;background:#fff;
  border-bottom:1px solid #E9EDF4;
  box-shadow:0 4px 16px rgba(15,23,42,.04);
  transition:box-shadow .24s var(--ease);
}
.site-header.is-scrolled{box-shadow:0 10px 28px rgba(15,23,42,.10)}
.header-inner{display:flex;align-items:center;gap:24px;height:68px}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0}
.brand-mark{
  width:32px;height:32px;border-radius:9px;flex-shrink:0;
  background:linear-gradient(135deg,var(--brand),var(--brand-2));
  display:grid;place-items:center;
  box-shadow:0 6px 16px -8px rgba(255,122,24,.8);
}
.brand-mark svg{width:19px;height:19px;fill:#fff}
.brand-text{display:flex;flex-direction:column;line-height:1.1}
.brand-text strong{font-size:17px;color:var(--light-ink-1);font-weight:700;letter-spacing:.01em}
.brand-text em{font-style:normal;font-size:12px;color:var(--light-ink-2);letter-spacing:.16em}

.nav-panel{flex:1;display:flex;align-items:center;justify-content:space-between;gap:24px;min-width:0}
.nav-links{display:flex;align-items:center;gap:26px}
.nav-links a{
  position:relative;font-size:15px;color:var(--light-ink-2);
  padding:6px 0;white-space:nowrap;
}
.nav-links a::after{
  content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;
  background:var(--brand);border-radius:2px;transform:scaleX(0);
  transform-origin:left;transition:transform .22s var(--ease);
}
.nav-links a:hover{color:var(--light-ink-1)}
.nav-links a:hover::after{transform:scaleX(1)}
.nav-links a.is-active{color:var(--light-ink-1);font-weight:700}
.nav-links a.is-active::after{transform:scaleX(1);left:0;right:auto;width:24px}

.header-right{display:flex;align-items:center;gap:14px;flex-shrink:0}
.search-box input{
  width:220px;height:40px;border-radius:var(--r-pill);
  border:1px solid transparent;background:#F3F5F9;
  padding:0 18px;font-size:14px;color:var(--light-ink-1);
  outline:none;transition:border-color .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease);
}
.search-box input::placeholder{color:#98A4B8}
.search-box input:focus{border-color:var(--brand);background:#fff;box-shadow:0 0 0 3px rgba(255,122,24,.16)}

.btn-brand{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 26px;border:none;border-radius:var(--r-md);
  font-size:15px;font-weight:600;color:#fff;
  background:linear-gradient(135deg,#FF7A18,#FFB347);
  box-shadow:0 10px 30px -10px rgba(255,122,24,.6),inset 0 0 0 1px rgba(255,255,255,.18);
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),filter .2s var(--ease);
  cursor:pointer;
}
.btn-brand:hover{filter:brightness(1.06);transform:translateY(-2px);box-shadow:0 14px 34px -10px rgba(255,122,24,.72),inset 0 0 0 1px rgba(255,255,255,.24)}
.btn-brand:active{transform:translateY(0) scale(.98)}
.btn-sm-brand{height:40px;padding:0 20px;border-radius:12px;font-size:14px}

.btn-ghost-dark{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 24px;border-radius:var(--r-md);
  border:1px solid rgba(255,255,255,.22);background:transparent;
  color:var(--ink-1);font-size:15px;font-weight:600;
  transition:background .2s var(--ease),border-color .2s var(--ease),transform .2s var(--ease);
}
.btn-ghost-dark:hover{background:rgba(255,255,255,.08);border-color:rgba(255,255,255,.34);transform:translateY(-2px);color:var(--ink-1)}

.nav-toggle{
  display:none;width:42px;height:42px;margin-left:auto;
  border:1px solid var(--line);background:#fff;border-radius:12px;
  flex-direction:column;align-items:center;justify-content:center;gap:4px;cursor:pointer;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--light-ink-1);border-radius:2px;transition:transform .22s var(--ease),opacity .22s var(--ease)}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(6px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}

/* ---------- 内页首屏 ---------- */
.page-hero{position:relative;overflow:hidden;padding:56px 0 72px;background:var(--bg-deep);border-bottom:1px solid rgba(255,255,255,.1)}
.page-hero .hero-bg{
  position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-1.webp');
  background-size:cover;background-position:center;opacity:.5;
}
.page-hero::after{
  content:"";position:absolute;inset:0;z-index:1;
  background:linear-gradient(180deg,rgba(6,10,20,.76) 0%,rgba(6,10,20,.92) 55%,rgba(7,11,22,1) 100%);
}
.hero-inner{position:relative;z-index:2;max-width:860px}
.crumb{display:flex;align-items:center;gap:8px;font-size:12.5px;color:var(--ink-3);margin-bottom:22px;flex-wrap:wrap}
.crumb a{color:var(--ink-3)}
.crumb a:hover{color:var(--brand-2)}
.crumb .sep{opacity:.6}
.crumb .current{color:var(--ink-1)}
.page-hero h1{
  font-size:clamp(30px,4vw,50px);line-height:1.2;letter-spacing:.01em;
  color:#fff;margin-bottom:18px;
}
.hero-sub{font-size:16.5px;color:var(--ink-2);max-width:720px;margin-bottom:26px}
.hero-caps{display:flex;flex-wrap:wrap;gap:10px}
.cap{
  display:inline-flex;align-items:center;height:32px;padding:0 15px;border-radius:var(--r-pill);
  font-size:13px;color:#9FE9FF;background:rgba(33,212,253,.12);
  border:1px solid rgba(33,212,253,.28);white-space:nowrap;
}
.cap.cap-brand{color:#FFD9B0;background:rgba(255,122,24,.14);border-color:rgba(255,122,24,.34)}

/* ---------- 通用板块 ---------- */
.section{padding:96px 0;position:relative}
.section-alt{background:var(--bg-deep-2)}
.section-head{max-width:760px;margin-bottom:46px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:12.5px;font-weight:600;
  letter-spacing:.18em;color:var(--brand-2);margin-bottom:14px;
}
.eyebrow::before{content:"";width:22px;height:2px;background:linear-gradient(90deg,var(--brand),var(--brand-2));border-radius:2px}
.section-title{font-size:clamp(24px,2.6vw,34px);color:#fff;margin-bottom:12px}
.section-sub{font-size:15px;color:var(--ink-2);max-width:640px}

.glass{
  background:linear-gradient(160deg,rgba(255,255,255,.09),rgba(255,255,255,.028));
  backdrop-filter:blur(16px) saturate(140%);
  -webkit-backdrop-filter:blur(16px) saturate(140%);
  border:1px solid rgba(255,255,255,.14);
  border-radius:var(--r-lg);
  box-shadow:var(--shadow-dark),inset 0 1px 0 rgba(255,255,255,.18);
  transition:transform .22s var(--ease),border-color .22s var(--ease),box-shadow .22s var(--ease);
}
.glass:hover{transform:translateY(-4px);border-color:rgba(255,255,255,.24);box-shadow:0 30px 70px -34px rgba(0,0,0,.9),0 0 0 1px rgba(255,122,24,.1),inset 0 1px 0 rgba(255,255,255,.2)}

/* ---------- 入口大卡 ---------- */
.entry-card{display:flex;flex-direction:column;overflow:hidden;height:100%}
.entry-media{display:block;aspect-ratio:16/9;overflow:hidden;background:#0A1striped}
.entry-media{background:#0A1322}
.entry-media img{width:100%;height:100%;object-fit:cover;transition:transform .45s var(--ease)}
.entry-card:hover .entry-media img{transform:scale(1.045)}
.entry-body{padding:24px;display:flex;flex-direction:column;gap:12px;flex:1}
.entry-body h3{font-size:20px;color:#fff}
.entry-body p{font-size:14.5px;color:var(--ink-2);line-height:1.75}
.pill{
  display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:var(--r-pill);
  font-size:12px;font-weight:600;color:#9FE9FF;background:rgba(33,212,253,.14);
  border:1px solid rgba(33,212,253,.24);align-self:flex-start;
}
.pill.pill-brand{color:#FFD9B0;background:rgba(255,122,24,.16);border-color:rgba(255,122,24,.3)}
.link-arrow{
  display:inline-flex;align-items:center;gap:8px;margin-top:auto;padding-top:4px;
  color:var(--brand-2);font-size:14px;font-weight:600;
}
.link-arrow span{transition:transform .22s var(--ease)}
.link-arrow:hover{color:var(--brand)}
.link-arrow:hover span{transform:translateX(4px)}

/* ---------- 步骤条 ---------- */
.step-strip{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.step-item{
  position:relative;padding:28px 22px 26px;border-radius:var(--r-lg);
  background:rgba(255,255,255,.04);border:1px solid rgba(255,255,255,.1);
  transition:transform .22s var(--ease),border-color .22s var(--ease),background .22s var(--ease);
}
.step-item::before{
  content:"";position:absolute;left:22px;right:22px;top:0;height:3px;border-radius:0 0 3px 3px;
  background:linear-gradient(90deg,var(--brand),var(--brand-2));opacity:.85;
}
.step-item:hover{transform:translateY(-4px);border-color:rgba(255,122,24,.4);background:rgba(255,255,255,.06)}
.step-no{
  display:block;font-family:"Inter",system-ui,sans-serif;font-size:13px;font-weight:700;
  letter-spacing:.14em;color:var(--brand-2);margin-bottom:12px;
}
.step-item h3{font-size:17px;color:#fff;margin-bottom:8px}
.step-item p{font-size:14px;color:var(--ink-2);line-height:1.75}

/* ---------- 自查清单 ---------- */
.check-wrap{display:grid;grid-template-columns:360px 1fr;gap:48px;align-items:start}
.check-list{display:grid;gap:12px}
.check-item{
  display:flex;gap:16px;padding:20px 22px;border-radius:var(--r-md);
  background:rgba(255,255,255,.035);border:1px solid rgba(255,255,255,.09);
  transition:border-color .22s var(--ease),background .22s var(--ease),transform .22s var(--ease);
}
.check-item:hover{border-color:rgba(33,212,253,.32);background:rgba(255,255,255,.055);transform:translateX(4px)}
.check-icon{
  flex:0 0 26px;width:26px;height:26px;border-radius:8px;margin-top:3px;
  display:grid;place-items:center;font-size:13px;font-weight:700;color:#070B16;
  background:linear-gradient(135deg,var(--brand),var(--brand-2));
}
.check-item h3{font-size:16px;color:#fff;margin-bottom:4px}
.check-item p{font-size:14px;color:var(--ink-2);line-height:1.7}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:880px;margin-inline:auto}
.faq-acc .accordion-item{
  background:rgba(255,255,255,.045);
  border:1px solid rgba(255,255,255,.12);
  border-radius:16px;margin-bottom:12px;overflow:hidden;
}
.faq-acc .accordion-button{
  background:transparent;color:var(--ink-1);font-size:16px;font-weight:600;
  padding:20px 22px;box-shadow:none;border-radius:16px;gap:16px;
}
.faq-acc .accordion-button:not(.collapsed){background:transparent;color:var(--brand-2);box-shadow:none}
.faq-acc .accordion-button:hover{color:#fff}
.faq-acc .accordion-button:focus{box-shadow:none;outline:2px solid rgba(255,179,71,.55);outline-offset:-2px;z-index:3}
.faq-acc .accordion-button::after{
  content:"";width:12px;height:12px;margin-left:auto;
  background:none;border-right:2px solid var(--brand-2);border-bottom:2px solid var(--brand-2);
  transform:rotate(45deg);transition:transform .22s var(--ease);
}
.faq-acc .accordion-button:not(.collapsed)::after{transform:rotate(-135deg)}
.faq-acc .accordion-button::before{
  content:"";flex:0 0 3px;width:3px;height:18px;border-radius:3px;
  background:linear-gradient(180deg,var(--brand),var(--brand-2));
}
.faq-acc .accordion-body{
  padding:0 22px 22px 45px;font-size:14.8px;color:var(--ink-2);line-height:1.85;
}
.faq-acc .accordion-collapse{transition:height .22s var(--ease)}

/* ---------- 底部 CTA ---------- */
.cta-band{
  position:relative;overflow:hidden;padding:84px 0;
  background:var(--bg-deep-2);border-top:1px solid rgba(255,255,255,.1);
}
.cta-band::before{
  content:"";position:absolute;inset:0;
  background:radial-gradient(620px 320px at 50% 0%,rgba(255,122,24,.3),transparent 72%);
}
.cta-inner{position:relative;z-index:2;text-align:center;max-width:660px;margin-inline:auto}
.cta-inner h2{font-size:clamp(24px,3vw,32px);color:#fff;margin-bottom:14px}
.cta-inner p{font-size:15px;color:var(--ink-2);margin-bottom:30px}
.cta-actions{display:flex;justify-content:center;gap:14px;flex-wrap:wrap}

/* ---------- 页脚 ---------- */
.site-footer{background:#070B16;border-top:1px solid rgba(255,255,255,.1);padding:64px 0 28px;color:var(--ink-2)}
.footer-brand{display:flex;align-items:center;gap:11px;margin-bottom:16px}
.footer-brand .brand-mark{width:34px;height:34px;border-radius:10px}
.footer-brand .brand-text strong{font-size:16px;color:var(--ink-1)}
.footer-brand .brand-text em{color:var(--ink-3)}
.footer-desc{font-size:13.5px;color:var(--ink-3);line-height:1.8;max-width:320px}
.footer-col h4{font-size:15px;color:var(--ink-1);margin-bottom:16px}
.footer-col a{display:block;font-size:14px;color:var(--ink-2);padding:5px 0}
.footer-col a:hover{color:var(--brand-2)}
.footer-contact{font-size:13.5px;color:var(--ink-3);display:grid;gap:8px;line-height:1.7}
.footer-contact span{color:var(--ink-2)}
.footer-bottom{
  display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;
  margin-top:44px;padding-top:22px;border-top:1px solid rgba(255,255,255,.08);
  font-size:13px;color:var(--ink-3);
}

/* ---------- 返回顶部 ---------- */
.to-top{
  position:fixed;right:22px;bottom:22px;width:44px;height:44px;border-radius:50%;
  display:grid;place-items:center;z-index:1040;cursor:pointer;
  background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.22);
  backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);
  color:var(--ink-1);opacity:0;visibility:hidden;transform:translateY(10px);
  transition:opacity .24s var(--ease),transform .24s var(--ease),visibility .24s;
}
.to-top.is-visible{opacity:1;visibility:visible;transform:translateY(0)}
.to-top:hover{background:rgba(255,122,24,.24);border-color:rgba(255,122,24,.5)}
.to-top svg{width:18px;height:18px;fill:currentColor}

/* ---------- 响应式 ---------- */
@media (min-width:1400px){}
@media (max-width:1199.98px){
  .check-wrap{grid-template-columns:1fr;gap:32px}
}
@media (max-width:991.98px){
  .header-inner{height:56px;gap:14px}
  .nav-toggle{display:flex}
  .nav-panel{
    position:fixed;left:0;right:0;top:56px;bottom:0;
    flex-direction:column;align-items:stretch;justify-content:flex-start;
    gap:18px;background:#fff;padding:16px 18px 120px;overflow-y:auto;
    transform:translateY(-10px);opacity:0;visibility:hidden;
    transition:opacity .24s var(--ease),transform .24s var(--ease),visibility .24s;
    z-index:1029;
  }
  .nav-panel.is-open{opacity:1;visibility:visible;transform:translateY(0)}
  .nav-links{flex-direction:column;align-items:stretch;gap:0}
  .nav-links a{height:52px;display:flex;align-items:center;font-size:16px;color:var(--light-ink-1);border-bottom:1px solid #F1F4F9}
  .nav-links a::after{display:none}
  .nav-links a.is-active{color:var(--brand)}
  .header-right{flex-direction:column;align-items:stretch;gap:12px}
  .search-box input{width:100%;height:46px;background:#F5F7FB}
  .header-right .btn-brand{width:100%}
  .page-hero{padding:36px 0 56px}
  .section{padding:72px 0}
  .step-strip{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:767.98px){
  .section{padding:56px 0}
  .section-head{margin-bottom:32px}
  .page-hero h1{font-size:clamp(26px,7vw,34px)}
  .hero-sub{font-size:15px}
  .entry-body{padding:20px}
  .entry-body h3{font-size:18px}
  .step-strip{grid-template-columns:1fr}
  .btn-brand,.btn-ghost-dark{width:100%}
  .cta-band{padding:64px 0}
  .footer-bottom{flex-direction:column;gap:8px}
  .to-top{right:14px;bottom:14px}
}
@media (max-width:520px){
  .cap{font-size:12px;height:30px;padding:0 12px}
  .check-item{padding:16px}
  .entry-media{aspect-ratio:16/10}
  .site-footer{padding:48px 0 22px}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms !important;transition-duration:.001ms !important}
  html{scroll-behavior:auto}
}
@media (hover:none){
  .glass{backdrop-filter:none;-webkit-backdrop-filter:none;background:rgba(16,28,49,.92)}
}

/* roulang page: category3 */
:root{
  --bg-deep:#070B16;
  --bg-deep-2:#0C1526;
  --bg-panel:#101C31;
  --brand:#FF7A18;
  --brand-2:#FFB347;
  --accent:#21D4FD;
  --ink-1:#EDF3FF;
  --ink-2:#A9B8D0;
  --ink-3:#6E7F9B;
  --light-ink-1:#0F1A2B;
  --light-ink-2:#55637A;
  --white:#FFFFFF;
  --light-bg:#F5F7FB;
  --line-light:#E6EBF3;
  --line-dark:rgba(255,255,255,.12);
  --r-sm:10px;
  --r-md:14px;
  --r-lg:20px;
  --r-xl:28px;
  --r-pill:999px;
  --shadow-light:0 1px 2px rgba(13,23,41,.04);
  --shadow-light-hover:0 12px 32px -12px rgba(13,23,41,.16);
  --shadow-dark:0 24px 60px -30px rgba(0,0,0,.85);
  --ease:cubic-bezier(.2,.7,.3,1);
  --font-cn:"HarmonyOS Sans SC","PingFang SC","Source Han Sans SC","Microsoft YaHei",system-ui,sans-serif;
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.8;
  color:var(--light-ink-1);
  background:var(--white);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;transition:color .2s var(--ease);}
button,input{font-family:inherit;}
h1,h2,h3,h4,h5{margin:0;letter-spacing:.01em;line-height:1.28;}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
.container{width:100%;max-width:1240px;margin:0 auto;padding-left:24px;padding-right:24px;}
.section{padding:96px 0;}
.section-tight{padding:72px 0;}
.divider-line{height:1px;background:var(--line-light);border:0;margin:0;}

/* ---------- 通用文字 ---------- */
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:var(--r-pill);
  font-size:12.5px;letter-spacing:.06em;
  background:rgba(33,212,253,.14);color:#0C7C97;
}
.eyebrow-dark{
  background:rgba(33,212,253,.16);color:#9FE9FF;
  border:1px solid rgba(33,212,253,.28);
}
.eyebrow-brand{
  background:rgba(255,122,24,.14);color:#B44E00;
}
.section-head{max-width:760px;margin-bottom:44px;}
.section-head h2{font-size:clamp(26px,2.6vw,36px);font-weight:700;color:var(--light-ink-1);}
.section-head .lead{margin-top:14px;font-size:15.5px;color:var(--light-ink-2);}
.section-head.on-dark h2{color:var(--ink-1);}
.section-head.on-dark .lead{color:var(--ink-2);}

/* ---------- 按钮 ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border-radius:var(--r-md);
  font-size:15px;font-weight:600;padding:0 22px;height:46px;border:1px solid transparent;
  transition:all .22s var(--ease);cursor:pointer;text-decoration:none;}
.btn-brand{
  background:linear-gradient(135deg,#FF7A18,#FFB347);color:#1A0D02;
  box-shadow:0 10px 30px -10px rgba(255,122,24,.6),inset 0 0 0 1px rgba(255,255,255,.18);
}
.btn-brand:hover{filter:brightness(1.06);box-shadow:0 14px 34px -10px rgba(255,122,24,.75),inset 0 0 0 1px rgba(255,255,255,.24);transform:translateY(-2px);color:#1A0D02;}
.btn-brand:active{transform:scale(.98);}
.btn-ghost-dark{background:transparent;border:1px solid rgba(255,255,255,.22);color:var(--ink-1);}
.btn-ghost-dark:hover{background:rgba(255,255,255,.08);border-color:rgba(255,255,255,.34);color:#fff;}
.btn-ghost-light{background:#fff;border:1px solid #E1E7F0;color:var(--light-ink-1);}
.btn-ghost-light:hover{border-color:#C9D4E4;box-shadow:var(--shadow-light-hover);transform:translateY(-2px);color:var(--light-ink-1);}
.btn-sm{height:40px;font-size:14px;padding:0 18px;}
.btn-xs{height:34px;font-size:13px;padding:0 14px;border-radius:11px;}
.btn:focus-visible{outline:2px solid var(--brand-2);outline-offset:2px;}
.link-arrow{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:#C45500;}
.link-arrow i{transition:transform .2s var(--ease);}
.link-arrow:hover i{transform:translateX(4px);}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:1030;background:#fff;
  border-bottom:1px solid #E9EDF4;box-shadow:0 4px 16px rgba(15,23,42,.04);
  transition:box-shadow .25s var(--ease);
}
.site-header.is-scrolled{box-shadow:0 10px 28px rgba(15,23,42,.10);}
.header-inner{display:flex;align-items:center;gap:26px;height:68px;}
.brand{display:flex;align-items:center;gap:11px;flex-shrink:0;}
.brand-mark{
  width:36px;height:36px;border-radius:10px;display:grid;place-items:center;
  background:linear-gradient(135deg,#FF7A18,#FFB347);
  box-shadow:0 8px 20px -10px rgba(255,122,24,.85);
}
.brand-mark svg{width:20px;height:20px;fill:#fff;}
.brand-text strong{display:block;font-size:15.5px;font-weight:700;color:var(--light-ink-1);line-height:1.2;}
.brand-text em{display:block;font-style:normal;font-size:11.5px;letter-spacing:.18em;color:var(--light-ink-2);}
.nav-links{display:flex;align-items:center;gap:26px;margin-left:8px;}
.nav-links a{
  position:relative;font-size:15px;color:var(--light-ink-2);padding:6px 0;white-space:nowrap;
}
.nav-links a::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;border-radius:2px;
  background:linear-gradient(90deg,#FF7A18,#FFB347);transform:scaleX(0);transform-origin:left;
  transition:transform .22s var(--ease);
}
.nav-links a:hover{color:var(--light-ink-1);}
.nav-links a:hover::after{transform:scaleX(1);}
.nav-links a.is-active{color:var(--light-ink-1);font-weight:700;}
.nav-links a.is-active::after{transform:scaleX(1);width:22px;}
.header-actions{margin-left:auto;display:flex;align-items:center;gap:14px;}
.nav-search{position:relative;display:flex;align-items:center;}
.nav-search input{
  width:220px;height:40px;border-radius:var(--r-pill);border:1px solid transparent;
  background:#F3F5F9;padding:0 40px 0 16px;font-size:14px;color:var(--light-ink-1);
  transition:all .2s var(--ease);outline:none;
}
.nav-search input::placeholder{color:#9AA7BB;}
.nav-search input:focus{background:#fff;border-color:var(--brand);box-shadow:0 0 0 4px rgba(255,122,24,.14);}
.nav-search i{position:absolute;right:15px;font-size:14px;color:#9AA7BB;pointer-events:none;}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:12px;border:1px solid #E1E7F0;background:#fff;
  color:var(--light-ink-1);font-size:17px;align-items:center;justify-content:center;
}
.nav-toggle:focus-visible{outline:2px solid var(--brand-2);outline-offset:2px;}
.mobile-nav{background:#fff;border-top:1px solid #EDF1F7;}
.mobile-nav-inner{padding:16px 24px 26px;display:flex;flex-direction:column;gap:4px;}
.mobile-search{position:relative;margin-bottom:12px;display:flex;align-items:center;}
.mobile-search input{width:100%;height:46px;border-radius:var(--r-pill);border:1px solid #E1E7F0;background:#F7F9FC;padding:0 42px 0 16px;font-size:14.5px;outline:none;}
.mobile-search input:focus{border-color:var(--brand);background:#fff;}
.mobile-search i{position:absolute;right:16px;color:#9AA7BB;}
.mobile-link{display:flex;align-items:center;justify-content:space-between;height:52px;font-size:15.5px;color:var(--light-ink-2);border-bottom:1px solid #F0F3F8;}
.mobile-link.is-active{color:var(--light-ink-1);font-weight:700;}
.mobile-link.is-active::before{content:"";width:4px;height:18px;border-radius:2px;background:linear-gradient(180deg,#FF7A18,#FFB347);margin-right:10px;}
.mobile-cta{margin-top:18px;width:100%;}

/* ---------- 页面横幅 ---------- */
.page-hero{
  position:relative;overflow:hidden;background:var(--bg-deep);
  min-height:280px;display:flex;align-items:center;padding:64px 0;
}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background:
    radial-gradient(680px 320px at 12% 0%, rgba(255,122,24,.34), transparent 68%),
    radial-gradient(520px 280px at 88% 100%, rgba(33,212,253,.20), transparent 70%),
    linear-gradient(180deg,#070B16,#0C1526);
}
.page-hero::after{
  content:"";position:absolute;inset:0;opacity:.35;
  background-image:linear-gradient(rgba(255,255,255,.05) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(255,255,255,.05) 1px,transparent 1px);
  background-size:56px 56px;
  -webkit-mask-image:radial-gradient(circle at 30% 40%,#000,transparent 78%);
  mask-image:radial-gradient(circle at 30% 40%,#000,transparent 78%);
}
.page-hero .container{position:relative;z-index:2;}
.crumbs{display:flex;align-items:center;gap:8px;font-size:12.5px;color:var(--ink-3);margin-bottom:22px;}
.crumbs a{color:var(--ink-3);}
.crumbs a:hover{color:var(--ink-1);}
.crumbs .sep{opacity:.6;}
.crumbs .current{color:var(--ink-1);}
.page-hero h1{
  font-size:clamp(28px,3.4vw,44px);font-weight:700;color:#fff;margin-top:16px;max-width:900px;
}
.page-hero p{margin-top:18px;font-size:16px;color:var(--ink-2);max-width:680px;}

/* ---------- 设备紧凑卡 ---------- */
.device-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:24px;}
.device-card{
  background:#fff;border:1px solid var(--line-light);border-radius:var(--r-lg);
  padding:26px 22px;box-shadow:var(--shadow-light);
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.device-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-light-hover);border-color:#D8E1EE;}
.device-icon{
  width:44px;height:44px;border-radius:12px;display:grid;place-items:center;
  background:linear-gradient(135deg,rgba(255,122,24,.14),rgba(255,179,71,.16));
  color:#C45500;font-size:18px;margin-bottom:16px;
}
.device-card h3{font-size:17px;font-weight:700;color:var(--light-ink-1);}
.device-card p{margin-top:10px;font-size:14.5px;line-height:1.75;color:var(--light-ink-2);}

/* ---------- 深色对比表区 ---------- */
.section-dark{position:relative;background:var(--bg-deep);color:var(--ink-1);overflow:hidden;}
.section-dark::before{
  content:"";position:absolute;inset:0;
  background:radial-gradient(760px 340px at 85% 0%, rgba(33,212,253,.14), transparent 70%),
             radial-gradient(600px 320px at 8% 100%, rgba(255,122,24,.16), transparent 72%);
}
.section-dark .container{position:relative;z-index:2;}
.table-wrap{
  overflow-x:auto;border:1px solid var(--line-dark);border-radius:var(--r-lg);
  background:linear-gradient(160deg,rgba(255,255,255,.075),rgba(255,255,255,.02));
  backdrop-filter:blur(16px) saturate(140%);
  box-shadow:var(--shadow-dark);
}
table.device-table{width:100%;min-width:720px;border-collapse:collapse;}
table.device-table thead th{
  font-size:13.5px;font-weight:600;letter-spacing:.05em;color:var(--ink-2);
  text-align:left;padding:18px 22px;border-bottom:1px solid var(--line-dark);white-space:nowrap;
}
table.device-table thead th:first-child{color:var(--ink-3);font-weight:500;width:150px;}
table.device-table tbody td{
  padding:18px 22px;font-size:14.5px;line-height:1.7;color:var(--ink-2);
  border-bottom:1px solid rgba(255,255,255,.07);vertical-align:top;
}
table.device-table tbody td:first-child{color:var(--ink-1);font-weight:600;white-space:nowrap;}
table.device-table tbody tr:last-child td{border-bottom:0;}
table.device-table tbody tr:hover td{background:rgba(255,255,255,.035);}
.table-note{margin-top:16px;font-size:12.5px;color:var(--ink-3);}

/* ---------- 图文适配区块 ---------- */
.fit-grid{display:grid;grid-template-columns:5fr 6fr;gap:56px;align-items:center;}
.fit-media{position:relative;border-radius:var(--r-xl);overflow:hidden;box-shadow:0 26px 60px -30px rgba(13,23,41,.35);}
.fit-media img{width:100%;height:100%;aspect-ratio:4/3;object-fit:cover;}
.fit-media .media-tag{
  position:absolute;left:18px;top:18px;padding:6px 14px;border-radius:var(--r-pill);
  background:rgba(7,11,22,.72);color:#fff;font-size:12.5px;backdrop-filter:blur(8px);
}
.check-list{margin-top:26px;display:grid;gap:16px;}
.check-item{display:flex;gap:14px;align-items:flex-start;}
.check-item .tick{
  flex:0 0 auto;width:26px;height:26px;border-radius:8px;display:grid;place-items:center;
  background:linear-gradient(135deg,#FF7A18,#FFB347);color:#fff;font-size:12px;margin-top:3px;
  box-shadow:0 6px 16px -8px rgba(255,122,24,.9);
}
.check-item h4{font-size:15.5px;font-weight:700;color:var(--light-ink-1);}
.check-item p{font-size:14.5px;color:var(--light-ink-2);margin-top:4px;}

/* ---------- FAQ ---------- */
.section-faq{background:var(--light-bg);}
.faq-narrow{max-width:880px;margin:0 auto;}
.accordion-custom .accordion-item{
  background:#fff;border:1px solid var(--line-light);border-radius:var(--r-md);
  margin-bottom:12px;overflow:hidden;box-shadow:var(--shadow-light);
}
.accordion-custom .accordion-button{
  font-size:16px;font-weight:600;color:var(--light-ink-1);background:#fff;padding:20px 22px 20px 24px;
  border:0;box-shadow:none;position:relative;
}
.accordion-custom .accordion-button::before{
  content:"";position:absolute;left:0;top:16px;bottom:16px;width:3px;border-radius:0 3px 3px 0;
  background:linear-gradient(180deg,#FF7A18,#FFB347);opacity:0;transition:opacity .2s var(--ease);
}
.accordion-custom .accordion-button:not(.collapsed){color:#B44E00;}
.accordion-custom .accordion-button:not(.collapsed)::before{opacity:1;}
.accordion-custom .accordion-button:focus{box-shadow:none;outline:2px solid var(--brand-2);outline-offset:-2px;}
.accordion-custom .accordion-button::after{
  background-image:none;content:"\2b";font-family:"Font Awesome 6 Free";font-weight:900;
  font-size:14px;color:#9AA7BB;transition:transform .22s var(--ease);width:auto;height:auto;
}
.accordion-custom .accordion-button:not(.collapsed)::after{transform:rotate(45deg);color:var(--brand);}
.accordion-custom .accordion-body{
  padding:0 24px 22px;font-size:14.5px;line-height:1.8;color:var(--light-ink-2);background:#fff;
}

/* ---------- 底部 CTA ---------- */
.section-cta{
  position:relative;background:var(--bg-deep);overflow:hidden;padding:88px 0;
}
.section-cta::before{
  content:"";position:absolute;inset:0;
  background:radial-gradient(640px 320px at 50% 10%, rgba(255,122,24,.30), transparent 68%),
             linear-gradient(180deg,#0C1526,#070B16);
}
.section-cta .container{position:relative;z-index:2;text-align:center;}
.section-cta h2{font-size:clamp(24px,2.6vw,34px);color:#fff;font-weight:700;}
.section-cta p{margin:16px auto 0;max-width:620px;font-size:15.5px;color:var(--ink-2);}
.cta-actions{margin-top:32px;display:flex;gap:14px;justify-content:center;flex-wrap:wrap;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--bg-deep);border-top:1px solid rgba(255,255,255,.1);padding:64px 0 28px;color:var(--ink-2);}
.footer-brand{display:flex;align-items:center;gap:11px;margin-bottom:16px;}
.footer-brand .brand-mark{width:34px;height:34px;}
.footer-brand .brand-text strong{color:var(--ink-1);}
.footer-brand .brand-text em{color:var(--ink-3);}
.footer-desc{font-size:13.5px;line-height:1.85;color:var(--ink-3);max-width:300px;}
.footer-col h4{font-size:14px;font-weight:700;color:var(--ink-1);margin-bottom:16px;letter-spacing:.04em;}
.footer-col a{display:block;font-size:13.5px;color:var(--ink-3);padding:5px 0;}
.footer-col a:hover{color:var(--brand-2);}
.footer-contact{font-size:13.5px;color:var(--ink-3);display:grid;gap:8px;}
.footer-contact span{color:var(--ink-2);}
.footer-bottom{
  margin-top:44px;padding-top:22px;border-top:1px solid rgba(255,255,255,.08);
  display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;
  font-size:13px;color:var(--ink-3);
}

/* ---------- 返回顶部 ---------- */
.to-top{
  position:fixed;right:22px;bottom:22px;width:44px;height:44px;border-radius:50%;
  display:grid;place-items:center;border:1px solid rgba(255,255,255,.18);
  background:rgba(12,21,38,.75);backdrop-filter:blur(12px);color:var(--ink-1);font-size:15px;
  opacity:0;visibility:hidden;transition:all .25s var(--ease);z-index:1040;cursor:pointer;
}
.to-top.is-show{opacity:1;visibility:visible;}
.to-top:hover{background:rgba(255,122,24,.9);color:#fff;border-color:transparent;}

/* ---------- 响应式 ---------- */
@media (max-width:1399px){
  .container{max-width:1200px;}
}
@media (max-width:1199px){
  .fit-grid{gap:40px;}
}
@media (max-width:991px){
  .nav-links,.nav-search{display:none;}
  .nav-toggle{display:inline-flex;}
  .header-inner{height:58px;}
  .section{padding:72px 0;}
  .device-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:20px;}
  .fit-grid{grid-template-columns:1fr;gap:32px;}
  .page-hero{min-height:auto;padding:52px 0;}
}
@media (max-width:767px){
  .container{padding-left:18px;padding-right:18px;}
  .section{padding:56px 0;}
  .section-tight{padding:48px 0;}
  .device-grid{grid-template-columns:1fr;}
  .page-hero{padding:44px 0;}
  .page-hero h1{font-size:clamp(24px,6vw,32px);}
  .brand-text strong{font-size:14.5px;}
  .footer-desc{max-width:none;}
  .footer-bottom{flex-direction:column;}
  .cta-actions .btn{width:100%;}
  .section-cta{padding:64px 0;}
}
@media (max-width:420px){
  .device-card{padding:22px 18px;}
  .footer-col a{font-size:13px;}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none!important;animation:none!important;}
  html{scroll-behavior:auto;}
}

/* roulang page: category2 */
:root{
  --bg-deep:#070B16;
  --bg-deep-2:#0C1526;
  --bg-panel:#101C31;
  --brand:#FF7A18;
  --brand-2:#FFB347;
  --accent:#21D4FD;
  --ink-1:#EDF3FF;
  --ink-2:#A9B8D0;
  --ink-3:#6E7F9B;
  --light-ink-1:#0F1A2B;
  --light-ink-2:#55637A;
  --line-light:#E1E7F0;
  --line-soft:#E9EDF4;
  --r-sm:10px;
  --r-md:14px;
  --r-lg:20px;
  --r-xl:28px;
  --r-pill:999px;
  --ease:cubic-bezier(.2,.7,.3,1);
  --shadow-dark:0 24px 60px -30px rgba(0,0,0,.85);
  --shadow-light:0 1px 2px rgba(13,23,41,.04);
  --shadow-light-hover:0 12px 32px -12px rgba(13,23,41,.16);
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"HarmonyOS Sans SC","PingFang SC","Source Han Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.8;
  color:var(--ink-1);
  background:var(--bg-deep);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
button,input{font:inherit;}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:.01em;}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
.container{max-width:1240px;padding-left:24px;padding-right:24px;margin:0 auto;}
@media (min-width:1400px){.container{max-width:1280px;}}
@media (max-width:767px){.container{padding-left:18px;padding-right:18px;}}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:#fff;
  border-bottom:1px solid var(--line-soft);
  box-shadow:0 4px 16px rgba(15,23,42,.04);
  transition:box-shadow .22s var(--ease);
}
.site-header.is-stuck{box-shadow:0 10px 30px rgba(15,23,42,.10);}
.header-inner{display:flex;align-items:center;gap:18px;height:68px;}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.brand-mark{
  width:32px;height:32px;border-radius:9px;display:grid;place-items:center;
  background:linear-gradient(135deg,#FF7A18,#FFB347);
  box-shadow:0 8px 20px -10px rgba(255,122,24,.85);
  flex:0 0 auto;
}
.brand-mark svg{width:19px;height:19px;fill:#fff;}
.brand-text{display:flex;flex-direction:column;line-height:1.16;}
.brand-text strong{font-size:16px;font-weight:700;color:var(--light-ink-1);white-space:nowrap;}
.brand-text em{font-size:11.5px;font-style:normal;color:var(--light-ink-2);letter-spacing:.14em;}
.nav-links{display:flex;align-items:center;gap:2px;margin-left:10px;}
.nav-links a{
  position:relative;padding:8px 14px;font-size:15px;color:var(--light-ink-2);
  border-radius:10px;white-space:nowrap;transition:color .2s var(--ease);
}
.nav-links a::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--brand),var(--brand-2));
  transform:scaleX(0);transform-origin:left;transition:transform .24s var(--ease);
}
.nav-links a:hover{color:var(--light-ink-1);}
.nav-links a:hover::after{transform:scaleX(1);}
.nav-links a.is-active{color:var(--light-ink-1);font-weight:700;}
.nav-links a.is-active::after{transform:scaleX(1);}
.header-actions{display:flex;align-items:center;gap:12px;margin-left:auto;}
.nav-search{position:relative;display:flex;align-items:center;}
.nav-search i{position:absolute;left:14px;font-size:13px;color:#8B98AC;pointer-events:none;}
.nav-search input{
  width:210px;height:40px;border-radius:var(--r-pill);border:1px solid transparent;
  background:#F3F5F9;padding:0 16px 0 36px;font-size:14px;color:var(--light-ink-1);
  transition:border-color .2s var(--ease),background .2s var(--ease),box-shadow .2s var(--ease);
}
.nav-search input::placeholder{color:#98A4B8;}
.nav-search input:focus{outline:none;background:#fff;border-color:var(--brand-2);box-shadow:0 0 0 4px rgba(255,179,71,.18);}
.nav-toggle{
  display:none;width:40px;height:40px;border-radius:12px;border:1px solid var(--line-light);
  background:#fff;color:var(--light-ink-1);align-items:center;justify-content:center;cursor:pointer;
  transition:border-color .2s var(--ease),color .2s var(--ease);
}
.nav-toggle:hover{border-color:var(--brand-2);color:var(--brand);}

/* 按钮体系 */
.btn-brand{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 24px;border:none;border-radius:var(--r-md);
  font-size:15px;font-weight:600;color:#fff;cursor:pointer;white-space:nowrap;
  background:linear-gradient(135deg,#FF7A18,#FFB347);
  box-shadow:0 10px 30px -10px rgba(255,122,24,.6),inset 0 0 0 1px rgba(255,255,255,.18);
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),filter .2s var(--ease);
}
.btn-brand:hover{filter:brightness(1.06);box-shadow:0 14px 38px -8px rgba(255,122,24,.72),inset 0 0 0 1px rgba(255,255,255,.24);transform:translateY(-2px);color:#fff;}
.btn-brand:active{transform:scale(.98);}
.btn-brand:focus-visible{outline:2px solid var(--brand-2);outline-offset:2px;}
.btn-sm{height:40px;padding:0 18px;font-size:14px;border-radius:12px;}
.btn-lg{height:48px;padding:0 28px;font-size:15.5px;}
.btn-ghost-dark{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 24px;border-radius:var(--r-md);font-size:15px;font-weight:500;
  color:var(--ink-1);background:transparent;border:1px solid rgba(255,255,255,.22);cursor:pointer;
  transition:background .2s var(--ease),border-color .2s var(--ease),transform .2s var(--ease),color .2s var(--ease);
}
.btn-ghost-dark:hover{background:rgba(255,255,255,.08);border-color:rgba(255,255,255,.36);transform:translateY(-2px);color:var(--ink-1);}
.btn-ghost-dark:focus-visible{outline:2px solid var(--brand-2);outline-offset:2px;}

/* 移动端抽屉 */
.mobile-panel{display:none;}
.mobile-nav a{
  display:flex;align-items:center;height:52px;border-bottom:1px solid #EEF1F6;
  font-size:16px;color:var(--light-ink-1);font-weight:500;
}
.mobile-nav a.is-active{color:var(--brand);font-weight:700;}
.mobile-search{position:relative;display:flex;align-items:center;margin:16px 0 4px;}
.mobile-search i{position:absolute;left:16px;font-size:14px;color:#8B98AC;}
.mobile-search input{
  width:100%;height:46px;border-radius:var(--r-pill);border:1px solid var(--line-light);
  background:#F7F9FC;padding:0 18px 0 42px;font-size:15px;color:var(--light-ink-1);
}
.mobile-search input:focus{outline:none;border-color:var(--brand-2);box-shadow:0 0 0 4px rgba(255,179,71,.18);}
.mobile-cta{position:sticky;bottom:0;padding:18px 0 10px;background:linear-gradient(180deg,rgba(255,255,255,0),#fff 34%);}
.mobile-cta .btn-brand{width:100%;}

/* ============ 首屏 ============ */
.hero-cat{
  position:relative;overflow:hidden;padding:92px 0 96px;text-align:center;
  background-image:linear-gradient(180deg,rgba(6,10,20,.78),rgba(6,10,20,.96)),url('/assets/images/backpic/back-3.webp');
  background-size:cover;background-position:center;
  border-bottom:1px solid rgba(255,255,255,.1);
}
.hero-cat::after{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.55;
  background-image:linear-gradient(rgba(255,255,255,.045) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.045) 1px,transparent 1px);
  background-size:64px 64px;
  -webkit-mask-image:radial-gradient(circle at 50% 38%,#000,transparent 74%);
  mask-image:radial-gradient(circle at 50% 38%,#000,transparent 74%);
}
.hero-cat .container{position:relative;z-index:2;}
.crumbs{display:flex;justify-content:center;align-items:center;flex-wrap:wrap;gap:8px;font-size:12.5px;color:var(--ink-3);margin-bottom:22px;}
.crumbs a{color:var(--ink-3);transition:color .2s var(--ease);}
.crumbs a:hover{color:var(--brand-2);}
.crumbs .sep{opacity:.55;}
.crumbs .current{color:var(--ink-1);}
.hero-cat h1{
  font-size:clamp(32px,4vw,54px);line-height:1.2;letter-spacing:.02em;
  font-weight:800;margin:0 0 18px;
  background:linear-gradient(120deg,#FFFFFF 20%,#FFD9B0 100%);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero-lead{max-width:720px;margin:0 auto 24px;font-size:17px;line-height:1.85;color:var(--ink-2);}
.pill-row{display:flex;justify-content:center;flex-wrap:wrap;gap:10px;margin-bottom:32px;}
.pill{
  display:inline-flex;align-items:center;gap:7px;height:30px;padding:0 14px;
  border-radius:var(--r-pill);font-size:12px;letter-spacing:.02em;
  color:#9FE9FF;background:rgba(33,212,253,.14);border:1px solid rgba(33,212,253,.24);
}
.pill.is-brand{color:#FFD9B0;background:rgba(255,122,24,.16);border-color:rgba(255,122,24,.32);}
.hero-actions{display:flex;justify-content:center;flex-wrap:wrap;gap:14px;}

/* ============ 板块通用 ============ */
.section{padding:96px 0;}
.section-alt{background:var(--bg-deep-2);border-top:1px solid rgba(255,255,255,.06);border-bottom:1px solid rgba(255,255,255,.06);}
.section-head{max-width:780px;margin:0 auto 48px;text-align:center;}
.section-head h2{font-size:clamp(26px,2.6vw,36px);line-height:1.28;margin-bottom:14px;}
.section-head p{color:var(--ink-2);font-size:16px;}
.narrow{max-width:880px;margin:0 auto;}
.narrow p{color:var(--ink-2);font-size:16.5px;line-height:1.9;margin-bottom:18px;}
.narrow p:last-child{margin-bottom:0;}
.narrow strong{color:var(--ink-1);font-weight:600;}

/* 玻璃卡片 */
.glass{
  border-radius:var(--r-lg);
  background:linear-gradient(160deg,rgba(255,255,255,.09),rgba(255,255,255,.028));
  border:1px solid rgba(255,255,255,.14);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.18),var(--shadow-dark);
  backdrop-filter:blur(16px) saturate(140%);
  -webkit-backdrop-filter:blur(16px) saturate(140%);
}

/* 图标卡 */
.icon-card{
  height:100%;padding:32px 28px;display:flex;flex-direction:column;
  transition:transform .22s var(--ease),border-color .22s var(--ease),box-shadow .22s var(--ease);
}
.icon-card:hover{
  transform:translateY(-4px);
  border-color:rgba(255,255,255,.24);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.22),0 0 0 1px rgba(255,122,24,.16),0 28px 62px -30px rgba(0,0,0,.92);
}
.icon-card .ic{
  width:44px;height:44px;border-radius:12px;display:grid;place-items:center;
  background:linear-gradient(135deg,#FF7A18,#FFB347);color:#fff;font-size:18px;
  box-shadow:0 12px 26px -12px rgba(255,122,24,.9);margin-bottom:20px;
}
.icon-card h3{font-size:19px;margin-bottom:10px;}
.icon-card p{color:var(--ink-2);font-size:14.5px;line-height:1.78;margin-bottom:18px;}
.tagline{margin-top:auto;display:flex;flex-wrap:wrap;gap:8px;}
.tag{
  display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:var(--r-pill);
  font-size:12px;color:#9FE9FF;background:rgba(33,212,253,.12);border:1px solid rgba(33,212,253,.2);
}

/* 图文分栏 */
.split{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center;}
.split-media img{width:100%;aspect-ratio:16/11;object-fit:cover;border-radius:var(--r-xl);border:1px solid rgba(255,255,255,.12);box-shadow:var(--shadow-dark);}
.split-body h2{font-size:clamp(24px,2.4vw,32px);line-height:1.3;margin-bottom:16px;}
.split-body .intro{color:var(--ink-2);font-size:16px;margin-bottom:26px;}
.checklist{display:grid;gap:14px;}
.checklist li{display:flex;gap:12px;align-items:flex-start;font-size:15.5px;line-height:1.75;color:var(--ink-2);}
.checklist li i{color:var(--brand-2);font-size:13px;margin-top:6px;flex:0 0 auto;}
.checklist li span{color:var(--ink-1);}

/* FAQ */
.faq-list{max-width:880px;margin:0 auto;display:grid;gap:12px;}
.faq-item{
  border-radius:var(--r-md);border:1px solid rgba(255,255,255,.13);overflow:hidden;
  background:linear-gradient(160deg,rgba(255,255,255,.075),rgba(255,255,255,.025));
  transition:border-color .22s var(--ease),box-shadow .22s var(--ease);
}
.faq-item.is-open{border-color:rgba(255,122,24,.4);box-shadow:0 0 0 1px rgba(255,122,24,.12);}
.faq-q{
  position:relative;width:100%;display:flex;align-items:center;gap:14px;
  padding:18px 22px;background:none;border:none;color:var(--ink-1);
  font-size:16px;font-weight:600;text-align:left;cursor:pointer;
}
.faq-q::before{
  content:"";position:absolute;left:0;top:15px;bottom:15px;width:3px;
  border-radius:0 3px 3px 0;background:linear-gradient(180deg,#FF7A18,#FFB347);
}
.faq-q .fa-plus{margin-left:auto;color:var(--brand-2);font-size:14px;transition:transform .22s var(--ease);}
.faq-item.is-open .fa-plus{transform:rotate(45deg);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .28s var(--ease);}
.faq-a p{padding:0 22px 20px;color:var(--ink-2);font-size:15px;line-height:1.82;}

/* 提示卡 */
.notice-card{
  max-width:880px;margin:0 auto;padding:32px 34px;display:flex;gap:20px;align-items:flex-start;
  border-radius:var(--r-lg);
  background:linear-gradient(135deg,rgba(255,122,24,.16),rgba(33,212,253,.08));
  border:1px solid rgba(255,122,24,.3);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.14),var(--shadow-dark);
}
.notice-card .notice-ic{
  width:44px;height:44px;flex:0 0 auto;border-radius:12px;display:grid;place-items:center;
  background:linear-gradient(135deg,#FF7A18,#FFB347);color:#fff;font-size:17px;
}
.notice-card h3{font-size:18px;margin-bottom:8px;}
.notice-card p{color:var(--ink-2);font-size:15px;line-height:1.82;}

/* CTA */
.cta-band{
  position:relative;overflow:hidden;text-align:center;padding:88px 0;
  background:radial-gradient(circle at 50% 0%,rgba(255,122,24,.22),transparent 62%),var(--bg-deep-2);
  border-top:1px solid rgba(255,255,255,.08);
}
.cta-inner{max-width:740px;margin:0 auto;}
.cta-inner h2{font-size:clamp(24px,2.4vw,34px);line-height:1.3;margin-bottom:14px;}
.cta-inner p{color:var(--ink-2);font-size:16px;margin-bottom:28px;}
.cta-actions{display:flex;justify-content:center;flex-wrap:wrap;gap:14px;}

/* 页脚 */
.site-footer{background:#070B16;border-top:1px solid rgba(255,255,255,.1);padding:72px 0 0;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-brand .brand-mark{width:34px;height:34px;border-radius:9px;display:grid;place-items:center;background:linear-gradient(135deg,#FF7A18,#FFB347);flex:0 0 auto;}
.footer-brand .brand-mark svg{width:20px;height:20px;fill:#fff;}
.footer-brand .brand-text strong{font-size:15px;font-weight:700;color:var(--ink-1);display:block;line-height:1.25;}
.footer-brand .brand-text em{font-size:11.5px;font-style:normal;color:var(--ink-3);display:block;letter-spacing:.16em;}
.footer-desc{color:var(--ink-3);font-size:14px;line-height:1.8;}
.footer-col h4{font-size:15px;color:var(--ink-1);margin-bottom:18px;font-weight:600;}
.footer-col a{display:block;color:var(--ink-3);font-size:14px;padding:6px 0;transition:color .2s var(--ease),transform .2s var(--ease);}
.footer-col a:hover{color:var(--brand-2);transform:translateX(3px);}
.footer-contact div{color:var(--ink-3);font-size:14px;padding:5px 0;}
.footer-bottom{
  margin-top:56px;border-top:1px solid rgba(255,255,255,.08);padding:22px 0;
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;font-size:13px;color:var(--ink-3);
}

/* 返回顶部 */
.to-top{
  position:fixed;right:24px;bottom:24px;width:44px;height:44px;border-radius:50%;
  display:grid;place-items:center;cursor:pointer;z-index:1040;
  border:1px solid rgba(255,255,255,.18);background:rgba(16,28,49,.86);
  color:var(--ink-1);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);
  opacity:0;visibility:hidden;transform:translateY(10px);
  transition:opacity .24s var(--ease),transform .24s var(--ease),visibility .24s var(--ease),border-color .2s var(--ease);
}
.to-top.is-visible{opacity:1;visibility:visible;transform:translateY(0);}
.to-top:hover{border-color:var(--brand-2);color:var(--brand-2);}

/* 响应式 */
@media (max-width:1199px){
  .nav-search input{width:170px;}
  .split{gap:36px;}
}
@media (max-width:991px){
  .header-inner{height:56px;gap:12px;}
  .nav-links,.nav-search{display:none;}
  .nav-toggle{display:inline-flex;}
  .brand-text strong{font-size:15px;}
  .mobile-panel.is-open{
    display:flex;flex-direction:column;
    position:fixed;left:0;right:0;top:56px;bottom:0;
    background:#fff;z-index:1029;overflow-y:auto;padding:10px 20px 20px;
  }
  .mobile-nav{flex:1 1 auto;}
  .hero-cat{padding:72px 0 76px;}
  .section{padding:72px 0;}
  .split{grid-template-columns:1fr;gap:30px;}
  .split-media{order:-1;}
  .icon-card{padding:28px 24px;}
}
@media (max-width:767px){
  .hero-cat{padding:56px 0 60px;}
  .hero-cat h1{font-size:clamp(28px,7vw,36px);}
  .hero-lead{font-size:15.5px;}
  .section{padding:56px 0;}
  .section-head{margin-bottom:34px;}
  .narrow p{font-size:15.5px;}
  .notice-card{flex-direction:column;padding:26px 22px;gap:16px;}
  .footer-bottom{flex-direction:column;}
}
@media (max-width:575px){
  .hero-actions,.cta-actions{flex-direction:column;width:100%;}
  .hero-actions .btn-brand,.hero-actions .btn-ghost-dark,
  .cta-actions .btn-brand,.cta-actions .btn-ghost-dark{width:100%;}
  .pill{font-size:11.5px;padding:0 12px;}
  .icon-card h3{font-size:17.5px;}
  .to-top{right:16px;bottom:16px;}
}
@media (prefers-reduced-motion: reduce){
  *{animation:none !important;transition:none !important;}
  html{scroll-behavior:auto;}
}