/* roulang page: index */
:root{
  --bg:#0F1116;
  --panel:#171A22;
  --panel-2:#1E222C;
  --line:rgba(255,255,255,.08);
  --orange:#FF6A2B;
  --orange-hover:#FF8347;
  --orange-active:#E6551A;
  --cyan:#14D2B4;
  --purple:#8B5CF6;
  --text:#F3F5F9;
  --text-2:#A7AFBF;
  --text-3:#6E7787;
  --link:#14D2B4;
  --r-card:14px;
  --r-btn:10px;
  --r-img:12px;
  --sh-hover:0 12px 32px rgba(0,0,0,.45);
  --ease:cubic-bezier(.2,.7,.3,1);
  --t:220ms;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;padding:0;
  background:var(--bg);
  color:var(--text);
  font-family:system-ui,-apple-system,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;line-height:1.75;letter-spacing:0;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
body{padding-top:122px}
img{max-width:100%;display:block;border:0}
a{color:var(--link);text-decoration:none;transition:color var(--t) var(--ease)}
a:hover{color:#3BE0C6}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;line-height:1.28;font-weight:700;color:var(--text)}
p{margin:0}
button,input{font-family:inherit}
::selection{background:rgba(255,106,43,.32);color:#fff}
:focus-visible{outline:2px solid var(--cyan);outline-offset:2px}

.grid-container{max-width:1200px;margin-left:auto;margin-right:auto;padding-left:20px;padding-right:20px;width:100%}
@media (max-width:640px){.grid-container{padding-left:16px;padding-right:16px}}

/* ============ 顶部导航 ============ */
.site-header{position:fixed;top:0;left:0;right:0;z-index:50;background:rgba(15,17,22,.88);backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
.nav-row{display:flex;align-items:center;gap:20px;height:70px}
.logo{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto}
.logo-mark{display:inline-flex;width:28px;height:28px;flex:0 0 28px}
.logo-text{font-size:17px;font-weight:800;color:var(--text);letter-spacing:-.01em;white-space:nowrap}
.logo:hover .logo-text{color:#fff}
.nav-search{flex:1 1 auto;max-width:420px;position:relative}
.nav-search input{
  width:100%;height:44px;border-radius:var(--r-btn);
  background:#12141A;border:1px solid var(--line);color:var(--text);
  padding:0 16px 0 42px;font-size:14px;transition:border-color var(--t) var(--ease),box-shadow var(--t) var(--ease);
}
.nav-search input::placeholder{color:var(--text-3)}
.nav-search input:focus{outline:none;border-color:var(--orange);box-shadow:0 0 0 3px rgba(255,106,43,.18)}
.nav-search .s-icon{position:absolute;left:14px;top:50%;transform:translateY(-50%);color:var(--text-3);pointer-events:none;display:flex}
.nav-actions{display:flex;align-items:center;gap:12px;margin-left:auto;flex:0 0 auto}
.icon-btn{
  display:inline-flex;align-items:center;justify-content:center;gap:6px;
  height:44px;min-width:44px;padding:0 14px;border-radius:var(--r-btn);
  background:transparent;border:1px solid var(--line);color:var(--text-2);
  font-size:14px;font-weight:600;cursor:pointer;transition:all var(--t) var(--ease);
}
.icon-btn:hover{color:var(--cyan);border-color:rgba(20,210,180,.5);transform:translateY(-2px)}
.icon-btn:active{transform:translateY(0)}
.nav-burger{display:none}
.channel-bar{position:relative;border-top:1px solid var(--line)}
.channel-bar::before,.channel-bar::after{content:"";position:absolute;top:0;bottom:0;width:34px;pointer-events:none;z-index:2}
.channel-bar::before{left:0;background:linear-gradient(90deg,rgba(15,17,22,.95),rgba(15,17,22,0))}
.channel-bar::after{right:0;background:linear-gradient(270deg,rgba(15,17,22,.95),rgba(15,17,22,0))}
.channel-scroll{display:flex;gap:8px;overflow-x:auto;padding:9px 0;scrollbar-width:none;-ms-overflow-style:none;scroll-behavior:smooth}
.channel-scroll::-webkit-scrollbar{display:none}
.channel-scroll a{
  flex:0 0 auto;display:inline-flex;align-items:center;height:34px;padding:0 16px;
  border-radius:999px;border:1px solid var(--line);background:transparent;
  color:var(--text-2);font-size:14px;font-weight:600;white-space:nowrap;
  transition:all var(--t) var(--ease);
}
.channel-scroll a:hover{color:var(--text);border-color:rgba(255,255,255,.26);transform:translateY(-1px)}
.channel-scroll a.is-active{background:var(--orange);border-color:var(--orange);color:#14161C}
.channel-scroll a.is-active:hover{background:var(--orange-hover);border-color:var(--orange-hover);color:#14161C}

/* ============ 移动端抽屉 ============ */
.off-canvas{background:#12141A;border-left:1px solid var(--line);width:290px}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding:18px 20px;border-bottom:1px solid var(--line)}
.drawer-head .logo-text{font-size:15px}
.drawer-close{background:transparent;border:1px solid var(--line);color:var(--text-2);width:36px;height:36px;border-radius:9px;cursor:pointer;display:inline-flex;align-items:center;justify-content:center}
.drawer-close:hover{color:var(--cyan);border-color:rgba(20,210,180,.5)}
.drawer-body{padding:16px 20px 32px}
.drawer-body a{display:block;padding:13px 0;color:var(--text-2);font-size:15px;font-weight:600;border-bottom:1px solid var(--line)}
.drawer-body a:hover{color:var(--orange)}
.drawer-body a.is-active{color:var(--orange)}
.drawer-label{font-size:12px;font-weight:700;color:var(--text-3);letter-spacing:.08em;margin:22px 0 4px}
.drawer-search{margin-top:18px}
.drawer-search input{width:100%;height:44px;border-radius:var(--r-btn);background:#0F1116;border:1px solid var(--line);color:var(--text);padding:0 14px;font-size:14px}
.drawer-search input:focus{outline:none;border-color:var(--orange);box-shadow:0 0 0 3px rgba(255,106,43,.18)}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 24px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;line-height:1;border:1px solid transparent;
  cursor:pointer;white-space:nowrap;
  transition:transform var(--t) var(--ease),background var(--t) var(--ease),border-color var(--t) var(--ease),box-shadow var(--t) var(--ease),color var(--t) var(--ease);
}
.btn-primary{background:var(--orange);border-color:var(--orange);color:#14161C}
.btn-primary:hover{background:var(--orange-hover);border-color:var(--orange-hover);color:#14161C;transform:translateY(-2px);box-shadow:0 8px 24px rgba(255,106,43,.35)}
.btn-primary:active{background:var(--orange-active);border-color:var(--orange-active);transform:translateY(0);box-shadow:none}
.btn-ghost{background:transparent;border-color:rgba(255,255,255,.18);color:var(--text)}
.btn-ghost:hover{border-color:var(--cyan);color:var(--cyan);transform:translateY(-2px)}
.btn-ghost:active{transform:translateY(0)}
.btn-sm{height:40px;padding:0 18px;font-size:14px}
.btn[disabled],.btn.is-disabled{opacity:.45;pointer-events:none}

/* ============ 通用 ============ */
.section{padding:82px 0}
.section-light{background:#F6F7F9;color:#14161C}
.section-light h2,.section-light h3{color:#14161C}
.eyebrow{
  display:inline-flex;align-items:center;gap:6px;height:26px;padding:0 12px;
  border-radius:999px;background:rgba(255,106,43,.12);color:#FF8A55;
  font-size:12px;font-weight:700;letter-spacing:.04em;margin-bottom:16px;
}
.section-light .eyebrow{background:rgba(255,106,43,.14);color:#D9500F}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;flex-wrap:wrap;margin-bottom:34px}
.section-head h2{font-size:clamp(22px,2.6vw,30px);font-weight:700;letter-spacing:-.01em}
.section-head p{margin-top:8px;color:var(--text-2);font-size:15px;max-width:640px}
.section-light .section-head p{color:#4A5160}
.badge{display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:999px;font-size:12px;font-weight:600;letter-spacing:.02em}
.badge-orange{background:rgba(255,106,43,.12);color:#FF8A55}
.badge-cyan{background:rgba(20,210,180,.12);color:#3BE0C6}
.section-light .badge-orange{background:rgba(255,106,43,.14);color:#D9500F}
.section-light .badge-cyan{background:rgba(20,210,180,.16);color:#0A8571}
.meta{display:flex;align-items:center;gap:10px;color:var(--text-3);font-size:13px;font-variant-numeric:tabular-nums}
.meta .sep{width:1px;height:12px;background:var(--line);display:inline-block}
.section-light .meta{color:#5A6273}
.t2{display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.t3{display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.g{display:grid;gap:22px}
.g-2{grid-template-columns:repeat(2,minmax(0,1fr))}
.g-3{grid-template-columns:repeat(3,minmax(0,1fr))}
.g-4{grid-template-columns:repeat(4,minmax(0,1fr))}
.min-w0{min-width:0}
section[id],div[id]{scroll-margin-top:130px}

/* ============ Hero ============ */
.hero{
  position:relative;overflow:hidden;border-bottom:1px solid var(--line);
  background-image:linear-gradient(115deg,rgba(15,17,22,.94) 0%,rgba(15,17,22,.82) 48%,rgba(15,17,22,.68) 100%),url('/assets/images/backpic/back-1.png');
  background-size:cover;background-position:center;
}
.hero::after{
  content:"";position:absolute;right:0;bottom:0;width:320px;height:220px;pointer-events:none;
  background-image:linear-gradient(rgba(255,255,255,.08) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.08) 1px,transparent 1px);
  background-size:26px 26px;
  -webkit-mask-image:linear-gradient(135deg,transparent 10%,#000 90%);
  mask-image:linear-gradient(135deg,transparent 10%,#000 90%);
}
.hero::before{
  content:"";position:absolute;right:-60px;top:-40px;width:320px;height:320px;
  background:radial-gradient(circle,rgba(20,210,180,.16),rgba(20,210,180,0) 70%);
  pointer-events:none;
}
.hero-inner{position:relative;z-index:2;padding:84px 0 66px;max-width:660px}
.hero-brand{display:inline-flex;align-items:center;gap:10px;font-size:13px;font-weight:700;color:var(--cyan);letter-spacing:.06em;margin-bottom:18px}
.hero-brand .dot{width:7px;height:7px;border-radius:50%;background:var(--cyan);box-shadow:0 0 0 4px rgba(20,210,180,.16)}
.hero h1{font-size:clamp(30px,4vw,48px);font-weight:800;letter-spacing:-.01em;line-height:1.18;margin-bottom:18px}
.hero h1 em{font-style:normal;color:var(--orange)}
.hero-sub{font-size:17px;line-height:1.75;color:var(--text-2);max-width:560px;margin-bottom:30px}
.hero-cta{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:34px}
.pill-row{display:flex;flex-wrap:wrap;gap:10px}
.pill{
  display:inline-flex;align-items:center;gap:7px;height:32px;padding:0 14px;
  border-radius:999px;border:1px solid var(--line);background:rgba(255,255,255,.03);
  color:var(--text-2);font-size:13px;font-weight:600;
}
.pill svg{color:var(--cyan)}

/* ============ 专题封面区 ============ */
.cover-split{display:grid;grid-template-columns:2fr 1fr;gap:22px}
.cover-main{position:relative;border-radius:var(--r-card);overflow:hidden;border:1px solid var(--line);background:var(--panel);min-height:400px;display:flex}
.cover-main img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;transition:transform 480ms var(--ease)}
.cover-main:hover img{transform:scale(1.04)}
.cover-main .veil{position:absolute;inset:0;background:linear-gradient(180deg,rgba(15,17,22,.15) 0%,rgba(15,17,22,.86) 100%)}
.cover-main .inner{position:relative;z-index:2;margin-top:auto;padding:30px}
.cover-main h3{font-size:clamp(20px,2.2vw,26px);font-weight:700;margin:12px 0 10px}
.cover-main p{color:var(--text-2);font-size:15px;max-width:520px}
.cover-main .count{display:inline-flex;align-items:center;gap:6px;margin-top:16px;color:var(--cyan);font-size:14px;font-weight:700;font-variant-numeric:tabular-nums}
.cover-side{display:grid;grid-template-rows:1fr 1fr;gap:22px}
.cover-mini{position:relative;border-radius:var(--r-card);overflow:hidden;border:1px solid var(--line);background:var(--panel);min-height:189px;display:flex}
.cover-mini img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;transition:transform 480ms var(--ease)}
.cover-mini:hover img{transform:scale(1.05)}
.cover-mini .veil{position:absolute;inset:0;background:linear-gradient(180deg,rgba(15,17,22,.2) 0%,rgba(15,17,22,.9) 100%)}
.cover-mini .inner{position:relative;z-index:2;margin-top:auto;padding:20px}
.cover-mini h3{font-size:17px;font-weight:700;margin-top:10px}

/* ============ 合集目录 ============ */
.dir-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}
.dir-item{
  display:flex;align-items:flex-start;gap:16px;padding:22px;
  background:#FFFFFF;border:1px solid rgba(0,0,0,.08);border-radius:var(--r-card);
  transition:transform var(--t) var(--ease),border-color var(--t) var(--ease),box-shadow var(--t) var(--ease);
}
.dir-item:hover{transform:translateY(-3px);border-color:rgba(255,106,43,.5);box-shadow:0 12px 32px rgba(15,17,22,.14)}
.dir-num{
  flex:0 0 44px;height:44px;border-radius:12px;display:inline-flex;align-items:center;justify-content:center;
  background:rgba(255,106,43,.12);color:#D9500F;font-size:16px;font-weight:800;font-variant-numeric:tabular-nums;
}
.dir-body h3{font-size:18px;font-weight:700;margin-bottom:6px;color:#14161C}
.dir-body p{font-size:14px;color:#5A6273;line-height:1.7}
.dir-body .go{display:inline-flex;align-items:center;gap:6px;margin-top:10px;font-size:13px;font-weight:700;color:#D9500F}

/* ============ 卡片 ============ */
.ccard{
  background:var(--panel);border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;display:flex;flex-direction:column;min-width:0;
  transition:transform var(--t) var(--ease),box-shadow var(--t) var(--ease),border-color var(--t) var(--ease);
}
.ccard:hover{transform:translateY(-4px);border-color:rgba(255,106,43,.4);box-shadow:var(--sh-hover)}
.cover{position:relative;aspect-ratio:16/9;overflow:hidden;background:var(--panel-2)}
.cover img{width:100%;height:100%;object-fit:cover;transition:transform 460ms var(--ease)}
.ccard:hover .cover img{transform:scale(1.05)}
.cover .tag{position:absolute;left:14px;top:14px}
.ccard-body{padding:20px;display:flex;flex-direction:column;gap:12px;flex:1 1 auto}
.ccard-body h3{font-size:18px;font-weight:700;line-height:1.45}
.ccard-body h3 a{color:var(--text)}
.ccard-body h3 a:hover{color:var(--orange)}
.ccard-body .excerpt{font-size:14px;line-height:1.72;color:var(--text-2)}
.ccard-link{margin-top:auto;display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:700;color:var(--cyan)}
.ccard-link:hover{color:#3BE0C6}

/* ============ 最新信息 ============ */
.tabs-wrap{border-bottom:1px solid var(--line);margin-bottom:28px}
ul.tabs{background:transparent;border:0;display:inline-flex;gap:8px;margin:0}
ul.tabs::before,ul.tabs::after{display:none}
ul.tabs li{float:none}
ul.tabs .tabs-title > a{
  display:inline-flex;align-items:center;height:34px;padding:0 16px;border-radius:999px;
  background:transparent;border:1px solid var(--line);color:var(--text-2);
  font-size:14px;font-weight:600;transition:all var(--t) var(--ease);
}
ul.tabs .tabs-title > a:hover{color:var(--text);border-color:rgba(255,255,255,.26)}
ul.tabs .tabs-title.is-active > a{background:var(--orange);border-color:var(--orange);color:#14161C}
.tabs-content{border:0;background:transparent;margin-bottom:0}
.tabs-panel{padding:0}
.list-item{
  display:flex;gap:20px;align-items:stretch;padding:18px;
  background:var(--panel);border:1px solid var(--line);border-radius:var(--r-card);
  transition:transform var(--t) var(--ease),border-color var(--t) var(--ease),box-shadow var(--t) var(--ease);
}
.list-item:hover{transform:translateY(-3px);border-color:rgba(255,106,43,.4);box-shadow:var(--sh-hover)}
.list-item .thumb{flex:0 0 220px;aspect-ratio:16/10;border-radius:var(--r-img);overflow:hidden;background:var(--panel-2)}
.list-item .thumb img{width:100%;height:100%;object-fit:cover}
.list-item .li-body{display:flex;flex-direction:column;gap:10px;min-width:0;flex:1 1 auto}
.list-item h3{font-size:17px;font-weight:700}
.list-item h3 a{color:var(--text)}
.list-item h3 a:hover{color:var(--orange)}
.list-item p{font-size:14px;color:var(--text-2);line-height:1.7}
.empty-state{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;padding:64px 20px;text-align:center;background:var(--panel);border:1px dashed var(--line);border-radius:var(--r-card)}
.empty-state svg{color:var(--text-3)}
.empty-state p{color:var(--text-2);font-size:15px}
.empty-state a{font-size:14px;font-weight:700;color:var(--orange)}

/* ============ 热门主题横滑 ============ */
.scroller-outer{position:relative}
.scroller-outer::before,.scroller-outer::after{content:"";position:absolute;top:0;bottom:16px;width:46px;pointer-events:none;z-index:2}
.scroller-outer::before{left:-4px;background:linear-gradient(90deg,var(--bg),rgba(15,17,22,0))}
.scroller-outer::after{right:-4px;background:linear-gradient(270deg,var(--bg),rgba(15,17,22,0))}
.scroller{display:flex;gap:20px;overflow-x:auto;padding:4px 4px 18px;scroll-snap-type:x proximity;scrollbar-width:none;-ms-overflow-style:none}
.scroller::-webkit-scrollbar{display:none}
.scroller .ccard{flex:0 0 286px;scroll-snap-align:start}
.scroller .ccard .cover{aspect-ratio:16/10}
.scroller .ccard h3{font-size:16px}

/* ============ CTA 条 ============ */
.cta-bar{
  display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap;
  padding:28px 30px;border:1px solid var(--line);border-radius:var(--r-card);
  background:linear-gradient(100deg,rgba(255,106,43,.10),rgba(20,210,180,.07) 70%,rgba(139,92,246,.06));
  transition:transform var(--t) var(--ease),border-color var(--t) var(--ease);
}
.cta-bar:hover{transform:translateY(-3px);border-color:rgba(255,106,43,.4)}
.cta-bar .txt{display:flex;align-items:center;gap:14px;min-width:0}
.cta-bar .txt strong{font-size:18px;font-weight:700;display:block}
.cta-bar .txt span{font-size:14px;color:var(--text-2)}
.cta-actions{display:flex;align-items:center;gap:12px;flex-wrap:wrap}
.counter{display:inline-flex;align-items:center;gap:8px;font-size:14px;color:var(--text-2);font-variant-numeric:tabular-nums}
.counter b{color:var(--orange);font-size:16px}

/* ============ FAQ ============ */
.faq-col{min-width:0}
ul.accordion{background:transparent;border:0;margin:0}
ul.accordion li.accordion-item{
  background:#FFFFFF;border:1px solid rgba(0,0,0,.08);border-radius:12px;
  margin-bottom:14px;overflow:hidden;transition:box-shadow var(--t) var(--ease),border-color var(--t) var(--ease);
}
ul.accordion li.accordion-item.is-active{box-shadow:inset 3px 0 0 var(--orange);border-color:rgba(255,106,43,.35)}
ul.accordion .accordion-title{
  display:block;position:relative;padding:18px 46px 18px 20px;
  font-size:17px;font-weight:600;color:#14161C;background:transparent;border:0;
  transition:background var(--t) var(--ease);
}
ul.accordion .accordion-title:hover{background:#F0F2F5}
ul.accordion .accordion-title::before{
  content:"";position:absolute;right:22px;top:50%;width:9px;height:9px;
  border-right:1.75px solid #5A6273;border-bottom:1.75px solid #5A6273;
  transform:translateY(-70%) rotate(45deg);transition:transform var(--t) var(--ease);
}
ul.accordion .accordion-item.is-active .accordion-title::before{transform:translateY(-30%) rotate(-135deg);border-color:var(--orange)}
ul.accordion .accordion-item.is-active .accordion-title{background:rgba(255,106,43,.06)}
ul.accordion .accordion-content{
  background:#FFFFFF;border:0;color:#5A6273;font-size:15px;line-height:1.8;
  padding:0 22px 20px;border-top:1px solid rgba(0,0,0,.06);
}

/* ============ 页脚 ============ */
.site-footer{background:#0B0D11;border-top:1px solid var(--line);padding-top:64px;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:36px;padding-bottom:44px}
.footer-brand .logo-text{font-size:16px}
.footer-brand p{margin-top:16px;font-size:14px;color:var(--text-2);line-height:1.8;max-width:300px}
.footer-col h4{font-size:14px;font-weight:700;color:var(--text);margin-bottom:16px;letter-spacing:.02em}
.footer-col li{margin-bottom:11px}
.footer-col a{font-size:14px;color:var(--text-2)}
.footer-col a:hover{color:var(--cyan)}
.footer-bottom{
  border-top:1px solid var(--line);padding:22px 0;display:flex;align-items:center;
  justify-content:space-between;gap:16px;flex-wrap:wrap;
}
.footer-bottom p{font-size:13px;color:var(--text-3)}
.footer-bottom .tech{font-size:13px;color:var(--text-3)}

/* ============ 响应式 ============ */
@media (max-width:1024px){
  .nav-search{max-width:280px}
  .cover-split{grid-template-columns:1fr}
  .cover-main{min-height:320px}
  .cover-side{grid-template-rows:none;grid-template-columns:1fr 1fr}
  .cover-mini{min-height:180px}
  .g-3,.g-4{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px}
  .section{padding:58px 0}
}
@media (max-width:860px){
  .nav-search{display:none}
  .nav-actions .icon-btn.keep-desktop{display:none}
  .nav-burger{display:inline-flex}
  .hero-inner{padding:64px 0 52px;max-width:100%}
  .dir-grid{grid-template-columns:1fr}
}
@media (max-width:640px){
  body{padding-top:114px}
  .grid-container{padding-left:16px;padding-right:16px}
  .nav-row{height:62px;gap:12px}
  .logo-text{font-size:15px}
  .section{padding:42px 0}
  .g,.g-2,.g-3,.g-4{grid-template-columns:1fr;gap:18px}
  .cover-side{grid-template-columns:1fr;grid-template-rows:none}
  .cover-main{min-height:280px}
  .cover-mini{min-height:200px}
  .list-item{flex-direction:column}
  .list-item .thumb{flex:none;width:100%;aspect-ratio:16/9}
  .cta-bar{padding:22px}
  .cta-actions{width:100%}
  .cta-actions .btn{flex:1 1 auto}
  .footer-grid{grid-template-columns:1fr;gap:26px;padding-bottom:32px}
  .hero h1{font-size:clamp(26px,7.4vw,34px)}
  .hero-sub{font-size:15.5px}
  .hero-cta .btn{flex:1 1 auto}
}

/* roulang page: article */
:root{
  --bg:#0F1116;
  --panel:#171A22;
  --panel-2:#1E222C;
  --panel-3:#12141A;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.16);
  --brand:#FF6A2B;
  --brand-hover:#FF8347;
  --brand-active:#E6551A;
  --cyan:#14D2B4;
  --violet:#8B5CF6;
  --text:#F3F5F9;
  --text-2:#A7AFBF;
  --text-3:#6E7787;
  --light-bg:#F6F7F9;
  --light-text:#14161C;
  --light-line:rgba(0,0,0,.08);
  --r-card:14px;
  --r-btn:10px;
  --r-img:12px;
  --shadow-card:0 1px 0 rgba(255,255,255,.03);
  --shadow-hover:0 12px 32px rgba(0,0,0,.45);
  --shadow-brand:0 8px 24px rgba(255,106,43,.35);
  --ease:cubic-bezier(.2,.7,.3,1);
  --gap:24px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:system-ui,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;height:auto;display:block}
a{color:var(--cyan);text-decoration:none;transition:color .2s var(--ease),border-color .2s var(--ease),background-color .2s var(--ease)}
a:hover{color:var(--brand-hover)}
button{font-family:inherit}
input,button,select,textarea{font-family:inherit;font-size:inherit}
::selection{background:rgba(255,106,43,.35);color:#fff}
:focus-visible{outline:2px solid var(--cyan);outline-offset:2px}
.grid-container{width:100%;max-width:1200px;margin:0 auto;padding-left:20px;padding-right:20px}
@media (max-width:640px){.grid-container{padding-left:16px;padding-right:16px}}

/* ---------- 通用按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 20px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;letter-spacing:0;cursor:pointer;
  border:1px solid transparent;text-align:center;white-space:nowrap;
  transition:transform .2s var(--ease),background-color .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease),color .2s var(--ease);
}
.btn-sm{min-height:38px;padding:0 16px;font-size:14px}
.btn-primary{background:var(--brand);color:#0F1116;border-color:var(--brand)}
.btn-primary:hover{background:var(--brand-hover);color:#0F1116;transform:translateY(-2px);box-shadow:var(--shadow-brand)}
.btn-primary:active{background:var(--brand-active);transform:translateY(0);box-shadow:none}
.btn-ghost{background:transparent;color:var(--text);border-color:var(--line-strong)}
.btn-ghost:hover{color:var(--text);border-color:var(--brand);background:rgba(255,106,43,.08);transform:translateY(-2px)}
.btn-ghost:active{transform:translateY(0);background:rgba(255,106,43,.14)}
.btn[disabled],.btn.is-disabled{opacity:.45;pointer-events:none;transform:none}

/* ---------- 徽章 / 标签 ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:3px 10px;border-radius:999px;
  font-size:12px;font-weight:600;line-height:1.6;
  background:rgba(255,106,43,.12);color:var(--brand);
}
.badge.cyan{background:rgba(20,210,180,.12);color:var(--cyan)}
.badge.violet{background:rgba(139,92,246,.14);color:#B69BFA}
.pill{
  display:inline-flex;align-items:center;gap:6px;
  padding:7px 14px;border-radius:999px;font-size:13px;font-weight:600;
  border:1px solid var(--line-strong);color:var(--text-2);background:transparent;
  transition:all .2s var(--ease);
}
.pill:hover{border-color:var(--brand);color:var(--text)}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(15,17,22,.82);
  backdrop-filter:blur(8px);
  -webkit-backdrop-filter:blur(8px);
  border-bottom:1px solid var(--line);
}
.nav-row{
  display:flex;align-items:center;gap:20px;height:68px;
}
.logo{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto;color:var(--text)}
.logo:hover{color:var(--text)}
.logo-mark{display:inline-flex;width:28px;height:28px;flex:0 0 auto}
.logo-text{font-size:18px;font-weight:800;letter-spacing:-.01em;white-space:nowrap}
.nav-search{
  position:relative;flex:1 1 auto;max-width:420px;margin-left:8px;
}
.nav-search .s-icon{
  position:absolute;left:14px;top:50%;transform:translateY(-50%);
  color:var(--text-3);display:inline-flex;pointer-events:none;
}
.nav-search input[type="search"]{
  width:100%;height:44px;margin:0;
  padding:0 14px 0 42px;
  background:var(--panel-3);border:1px solid var(--line);
  border-radius:var(--r-btn);color:var(--text);font-size:14px;
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease),background-color .2s var(--ease);
}
.nav-search input[type="search"]::placeholder{color:var(--text-3)}
.nav-search input[type="search"]:focus{
  outline:none;background:#141821;border-color:var(--brand);
  box-shadow:0 0 0 3px rgba(255,106,43,.18);
}
.nav-actions{display:flex;align-items:center;gap:10px;margin-left:auto;flex:0 0 auto}
.icon-btn{
  display:inline-flex;align-items:center;gap:6px;
  min-height:40px;padding:0 12px;border-radius:var(--r-btn);
  background:transparent;border:1px solid var(--line);color:var(--text-2);
  font-size:14px;font-weight:600;cursor:pointer;
  transition:all .2s var(--ease);
}
.icon-btn:hover{color:var(--text);border-color:var(--line-strong);background:var(--panel)}
.icon-btn:active{background:var(--panel-2)}
.nav-burger{display:none;padding:0 10px}

.channel-bar{border-top:1px solid var(--line);background:rgba(15,17,22,.72);position:relative}
.channel-scroll{
  display:flex;align-items:center;gap:10px;
  overflow-x:auto;padding:9px 0;
  scrollbar-width:none;-ms-overflow-style:none;scroll-behavior:smooth;
}
.channel-scroll::-webkit-scrollbar{display:none}
.channel-scroll a{
  flex:0 0 auto;padding:7px 15px;border-radius:999px;
  font-size:14px;font-weight:600;color:var(--text-2);
  border:1px solid var(--line);white-space:nowrap;
  scroll-margin-top:120px;
  transition:all .2s var(--ease);
}
.channel-scroll a:hover{color:var(--text);border-color:var(--brand);background:rgba(255,106,43,.08)}
.channel-scroll a.is-active{background:var(--brand);border-color:var(--brand);color:#0F1116}
.channel-bar::before,.channel-bar::after{
  content:"";position:absolute;top:0;bottom:0;width:36px;pointer-events:none;z-index:2;
}
.channel-bar::before{left:0;background:linear-gradient(90deg,rgba(15,17,22,.95),rgba(15,17,22,0))}
.channel-bar::after{right:0;background:linear-gradient(270deg,rgba(15,17,22,.95),rgba(15,17,22,0))}

.mobile-menu{
  display:none;border-top:1px solid var(--line);
  background:rgba(18,20,26,.98);
}
.mobile-menu.is-open{display:block}
.mobile-menu .grid-container{padding-top:12px;padding-bottom:16px}
.mobile-menu a{
  display:flex;align-items:center;min-height:46px;
  padding:0 4px;color:var(--text-2);font-weight:600;
  border-bottom:1px solid var(--line);
}
.mobile-menu a:last-child{border-bottom:0}
.mobile-menu a.is-active,.mobile-menu a:hover{color:var(--brand)}

/* ---------- 文章页头部区 ---------- */
.article-hero{
  position:relative;
  padding:46px 0 40px;
  background:
    linear-gradient(180deg,rgba(15,17,22,.86),rgba(15,17,22,.97)),
    url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
  border-bottom:1px solid var(--line);
}
.crumbs{
  display:flex;align-items:center;flex-wrap:wrap;gap:8px;
  font-size:13px;color:var(--text-3);margin-bottom:18px;
}
.crumbs a{color:var(--text-2)}
.crumbs a:hover{color:var(--brand)}
.crumbs .sep{color:var(--text-3);opacity:.7}
.crumbs .now{color:var(--text-3);max-width:280px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.article-hero h1{
  font-size:clamp(28px,3.4vw,42px);
  line-height:1.28;font-weight:800;letter-spacing:-.01em;
  margin:0 0 18px;max-width:900px;color:var(--text);
}
.article-meta{
  display:flex;align-items:center;flex-wrap:wrap;gap:10px 14px;
  font-size:13px;color:var(--text-3);font-variant-numeric:tabular-nums;
}
.article-meta .m-item{display:inline-flex;align-items:center;gap:6px}
.article-meta .divider{width:1px;height:12px;background:var(--line-strong);display:inline-block}
.article-meta .cat{color:var(--brand);font-weight:600}

/* ---------- 正文阅读区 ---------- */
.section{padding:64px 0}
.section-tight{padding:44px 0}
@media (max-width:1024px){.section{padding:52px 0}.section-tight{padding:36px 0}}
@media (max-width:640px){.section{padding:40px 0}.section-tight{padding:28px 0}}

.reading-wrap{max-width:760px;margin:0 auto}
.article-body{font-size:17px;line-height:1.85;color:var(--text-2);word-wrap:break-word}
.article-body > *:first-child{margin-top:0}
.article-body p{margin:0 0 1.2em}
.article-body h2{
  font-size:26px;font-weight:700;color:var(--text);line-height:1.4;
  margin:1.9em 0 .75em;padding-left:14px;border-left:3px solid var(--brand);
}
.article-body h3{font-size:20px;font-weight:700;color:var(--text);line-height:1.5;margin:1.6em 0 .6em}
.article-body h4{font-size:17px;font-weight:700;color:var(--text);margin:1.4em 0 .5em}
.article-body ul,.article-body ol{margin:0 0 1.2em;padding-left:1.4em}
.article-body li{margin-bottom:.5em}
.article-body li::marker{color:var(--brand)}
.article-body strong{color:var(--text);font-weight:700}
.article-body a{color:var(--cyan);border-bottom:1px solid rgba(20,210,180,.35)}
.article-body a:hover{color:var(--brand-hover);border-bottom-color:var(--brand-hover)}
.article-body blockquote{
  margin:1.6em 0;padding:16px 20px;color:var(--text);
  background:var(--panel);border-left:3px solid var(--brand);
  border-radius:0 var(--r-btn) var(--r-btn) 0;
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{border-radius:var(--r-img);margin:1.5em 0;width:100%;object-fit:cover}
.article-body figure{margin:1.6em 0}
.article-body figcaption{font-size:13px;color:var(--text-3);text-align:center;margin-top:10px}
.article-body table{width:100%;border-collapse:collapse;font-size:15px;margin:1.5em 0;font-variant-numeric:tabular-nums}
.article-body th,.article-body td{border:1px solid var(--line);padding:11px 13px;text-align:left;color:var(--text-2)}
.article-body th{background:var(--panel-2);color:var(--text);font-weight:600;font-size:14px}
.article-body tr:hover td{background:rgba(255,255,255,.02)}
.article-body hr{border:0;border-top:1px solid var(--line);margin:2em 0}
.article-body code{
  background:var(--panel-2);border:1px solid var(--line);
  border-radius:6px;padding:1px 6px;font-size:14px;color:var(--cyan);
}

/* ---------- 标签行 ---------- */
.tag-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:36px;padding-top:26px;border-top:1px solid var(--line)}
.tag-row .lbl{font-size:13px;color:var(--text-3);align-self:center;margin-right:2px}

/* ---------- 分享 / 收藏 CTA 条 ---------- */
.share-bar{
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  flex-wrap:wrap;
  margin-top:28px;padding:20px 24px;
  background:var(--panel);border:1px solid var(--line);border-radius:var(--r-card);
  transition:border-color .2s var(--ease),transform .2s var(--ease);
}
.share-bar:hover{border-color:rgba(255,106,43,.4);transform:translateY(-2px)}
.share-bar .tip{font-size:15px;font-weight:600;color:var(--text);margin:0}
.share-bar .tip span{display:block;font-size:13px;font-weight:400;color:var(--text-3);margin-top:4px}
.share-actions{display:flex;align-items:center;gap:12px;flex-wrap:wrap}
.share-actions .count{font-size:13px;color:var(--text-3);font-variant-numeric:tabular-nums}

/* ---------- 相关推荐 ---------- */
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:28px;flex-wrap:wrap}
.sec-head h2{font-size:clamp(22px,2.4vw,30px);font-weight:700;letter-spacing:-.01em;margin:0;color:var(--text)}
.sec-head .desc{font-size:14px;color:var(--text-3);margin:6px 0 0}
.sec-head .more{font-size:14px;font-weight:600;color:var(--cyan)}
.sec-head .more:hover{color:var(--brand-hover)}

.card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:var(--gap)}
@media (max-width:1024px){.card-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (max-width:640px){.card-grid{grid-template-columns:1fr;gap:18px}}

.card{
  display:flex;flex-direction:column;overflow:hidden;
  background:var(--panel);border:1px solid var(--line);border-radius:var(--r-card);
  transition:transform .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.card:hover{transform:translateY(-4px);border-color:rgba(255,106,43,.4);box-shadow:var(--shadow-hover)}
.card .cover{position:relative;width:100%;aspect-ratio:16/9;overflow:hidden;background:var(--panel-2)}
.card .cover img{width:100%;height:100%;object-fit:cover;transition:transform .35s var(--ease)}
.card:hover .cover img{transform:scale(1.04)}
.card .body{padding:16px 18px 18px;display:flex;flex-direction:column;gap:10px;flex:1 1 auto}
.card .meta{display:flex;align-items:center;gap:10px;font-size:12px;color:var(--text-3);font-variant-numeric:tabular-nums}
.card .meta .divider{width:1px;height:11px;background:var(--line-strong)}
.card h3{
  font-size:17px;font-weight:700;line-height:1.5;margin:0;color:var(--text);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.card h3 a{color:var(--text)}
.card h3 a:hover{color:var(--brand-hover)}
.card p{
  font-size:14px;line-height:1.7;color:var(--text-2);margin:0;
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;
}
.card .foot{margin-top:auto;padding-top:12px;display:flex;align-items:center;justify-content:space-between}
.card .foot .link{font-size:13px;font-weight:600;color:var(--cyan);display:inline-flex;align-items:center;gap:6px}
.card .foot .link:hover{color:var(--brand-hover)}

/* ---------- 返回分类 ---------- */
.back-strip{
  display:flex;align-items:center;justify-content:space-between;gap:20px;flex-wrap:wrap;
  padding:22px 24px;border-radius:var(--r-card);
  background:var(--panel-2);border:1px solid var(--line);
}
.back-strip .txt{font-size:14px;color:var(--text-2);margin:0}
.back-strip .txt b{display:block;font-size:17px;color:var(--text);font-weight:700;margin-bottom:4px}

/* ---------- 空态 ---------- */
.empty-state{
  max-width:560px;margin:0 auto;text-align:center;
  padding:56px 24px;background:var(--panel);border:1px solid var(--line);border-radius:var(--r-card);
}
.empty-state .ico{display:inline-flex;color:var(--text-3);margin-bottom:16px}
.empty-state h2{font-size:20px;font-weight:700;color:var(--text);margin:0 0 10px}
.empty-state p{font-size:15px;color:var(--text-2);margin:0 0 22px}

/* ---------- 浅色反转区块 ---------- */
.invert{
  background:var(--light-bg);color:var(--light-text);
  border-top:1px solid var(--light-line);border-bottom:1px solid var(--light-line);
}
.invert .sec-head h2{color:var(--light-text)}
.invert .sec-head .desc{color:#5A6070}
.invert .sec-head .more{color:#0F9C86}
.invert .sec-head .more:hover{color:var(--brand-active)}
.invert .card{background:#fff;border-color:var(--light-line)}
.invert .card:hover{border-color:rgba(255,106,43,.45)}
.invert .card h3 a{color:var(--light-text)}
.invert .card h3 a:hover{color:var(--brand-active)}
.invert .card p{color:#5A6070}
.invert .card .meta{color:#7B8291}
.invert .card .meta .divider{background:rgba(0,0,0,.14)}
.invert .card .foot .link{color:#0F9C86}
.invert .badge{background:rgba(255,106,43,.14);color:#C4481A}
.invert .btn-primary{color:#fff}
.invert .btn-ghost{color:var(--light-text);border-color:rgba(0,0,0,.16)}
.invert .btn-ghost:hover{color:var(--light-text);border-color:var(--brand);background:rgba(255,106,43,.1)}

/* ---------- 页脚 ---------- */
.site-footer{
  background:#0B0D11;border-top:1px solid var(--line);
  padding:56px 0 0;color:var(--text-2);
}
.footer-grid{
  display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:36px;
  padding-bottom:40px;
}
@media (max-width:1024px){.footer-grid{grid-template-columns:1fr 1fr;gap:30px}}
@media (max-width:640px){.footer-grid{grid-template-columns:1fr;gap:26px}}
.footer-brand .logo{margin-bottom:14px}
.footer-brand p{font-size:14px;line-height:1.75;color:var(--text-3);margin:0;max-width:280px}
.footer-col h4{font-size:14px;font-weight:700;color:var(--text);margin:0 0 14px;letter-spacing:.01em}
.footer-col ul{list-style:none;margin:0;padding:0}
.footer-col li{margin-bottom:10px}
.footer-col a{font-size:14px;color:var(--text-2)}
.footer-col a:hover{color:var(--brand)}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:14px;flex-wrap:wrap;
  padding:18px 0 24px;border-top:1px solid var(--line);
}
.footer-bottom p{margin:0;font-size:13px;color:var(--text-3)}
.footer-bottom .tech{color:var(--text-3);opacity:.8}

@media (max-width:1024px){
  .nav-search{max-width:280px}
}
@media (max-width:900px){
  .keep-desktop{display:none !important}
  .nav-search{display:none}
  .nav-burger{display:inline-flex}
  .nav-row{height:62px}
  .logo-text{font-size:16px}
}
@media (max-width:640px){
  .article-hero{padding:32px 0 28px}
  .article-body{font-size:16.5px;line-height:1.8}
  .article-body h2{font-size:22px}
  .article-body h3{font-size:18px}
  .share-bar{padding:16px 18px}
  .share-actions .btn{flex:1 1 auto}
  .back-strip{padding:18px}
}

/* roulang page: category1 */
:root{
  --bg:#0F1116;
  --panel:#171A22;
  --panel-2:#1E222C;
  --panel-3:#12141A;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.16);
  --primary:#FF6A2B;
  --primary-hover:#FF8347;
  --primary-active:#E6551A;
  --cyan:#14D2B4;
  --purple:#8B5CF6;
  --text:#F3F5F9;
  --text-2:#A7AFBF;
  --text-3:#6E7787;
  --light-bg:#F6F7F9;
  --light-text:#14161C;
  --radius-card:14px;
  --radius-btn:10px;
  --radius-img:12px;
  --radius-pill:999px;
  --shadow-card:0 12px 32px rgba(0,0,0,.45);
  --ease:cubic-bezier(.2,.7,.3,1);
  --dur:210ms;
  --gap:24px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:system-ui,-apple-system,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.75;
  letter-spacing:0;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border-radius:var(--radius-img);}
a{color:var(--primary);text-decoration:none;transition:color var(--dur) var(--ease);}
a:hover{color:var(--primary-hover);}
a:focus-visible,button:focus-visible,input:focus-visible,summary:focus-visible{outline:2px solid var(--cyan);outline-offset:2px;}
button{font-family:inherit;cursor:pointer;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{margin:0;font-weight:700;color:var(--text);letter-spacing:-.01em;line-height:1.3;}
p{margin:0;}
time,.num{font-variant-numeric:tabular-nums;}

/* ---------- 容器 ---------- */
.grid-container{
  max-width:1200px;
  padding-left:20px;
  padding-right:20px;
  margin-left:auto;
  margin-right:auto;
  width:100%;
}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:44px;
  padding:0 20px;
  border-radius:var(--radius-btn);
  font-size:15px;
  font-weight:600;
  border:1px solid transparent;
  transition:transform var(--dur) var(--ease),background-color var(--dur) var(--ease),border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease),color var(--dur) var(--ease);
  white-space:nowrap;
}
.btn-primary{background:var(--primary);color:#16110D;border-color:var(--primary);}
.btn-primary:hover{background:var(--primary-hover);border-color:var(--primary-hover);color:#16110D;transform:translateY(-2px);box-shadow:0 8px 24px rgba(255,106,43,.35);}
.btn-primary:active{background:var(--primary-active);border-color:var(--primary-active);transform:translateY(0);box-shadow:none;}
.btn-ghost{background:transparent;color:var(--text);border-color:var(--line-strong);}
.btn-ghost:hover{border-color:rgba(255,106,43,.55);color:var(--primary-hover);transform:translateY(-2px);}
.btn-ghost:active{transform:translateY(0);border-color:var(--primary-active);color:var(--primary-active);}
.btn-sm{min-height:40px;padding:0 16px;font-size:14px;}
.btn[disabled],.btn.is-disabled{opacity:.45;pointer-events:none;transform:none;}

/* ---------- 标签 / 徽章 ---------- */
.badge{
  display:inline-flex;
  align-items:center;
  padding:3px 10px;
  border-radius:var(--radius-pill);
  font-size:12px;
  font-weight:600;
  line-height:1.6;
}
.badge-orange{background:rgba(255,106,43,.12);color:var(--primary);}
.badge-cyan{background:rgba(20,210,180,.12);color:var(--cyan);}
.badge-purple{background:rgba(139,92,246,.14);color:#B79BF9;}
.pill{
  display:inline-flex;
  align-items:center;
  gap:6px;
  height:32px;
  padding:0 14px;
  border-radius:var(--radius-pill);
  border:1px solid var(--line);
  background:rgba(30,34,44,.72);
  color:var(--text-2);
  font-size:13px;
  font-weight:600;
}

/* ---------- 头部 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:rgba(15,17,22,.82);
  backdrop-filter:blur(8px);
  -webkit-backdrop-filter:blur(8px);
  border-bottom:1px solid var(--line);
}
.nav-row{
  display:flex;
  align-items:center;
  gap:20px;
  min-height:70px;
}
.logo{
  display:inline-flex;
  align-items:center;
  gap:10px;
  flex:0 0 auto;
  color:var(--text);
}
.logo:hover{color:var(--text);}
.logo-mark{display:inline-flex;flex:0 0 auto;}
.logo-text{
  font-size:17px;
  font-weight:800;
  letter-spacing:-.01em;
  white-space:nowrap;
}
.nav-search{
  position:relative;
  flex:1 1 auto;
  max-width:420px;
  display:flex;
  align-items:center;
}
.nav-search .s-icon{
  position:absolute;
  left:14px;
  color:var(--text-3);
  display:inline-flex;
  pointer-events:none;
}
.nav-search input[type="search"]{
  width:100%;
  height:44px;
  padding:0 14px 0 42px;
  margin:0;
  background:var(--panel-3);
  border:1px solid var(--line);
  border-radius:var(--radius-btn);
  color:var(--text);
  font-size:14px;
  transition:border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.nav-search input[type="search"]::placeholder{color:var(--text-3);}
.nav-search input[type="search"]:focus{
  outline:none;
  border-color:var(--primary);
  box-shadow:0 0 0 3px rgba(255,106,43,.18);
}
.nav-actions{
  display:flex;
  align-items:center;
  gap:10px;
  margin-left:auto;
  flex:0 0 auto;
}
.icon-btn{
  display:inline-flex;
  align-items:center;
  gap:6px;
  height:40px;
  padding:0 12px;
  background:transparent;
  border:1px solid var(--line);
  border-radius:var(--radius-btn);
  color:var(--text-2);
  font-size:14px;
  font-weight:600;
  transition:border-color var(--dur) var(--ease),color var(--dur) var(--ease),transform var(--dur) var(--ease),background-color var(--dur) var(--ease);
}
.icon-btn:hover{border-color:rgba(255,106,43,.5);color:var(--primary-hover);transform:translateY(-2px);}
.icon-btn:active{transform:translateY(0);}
.nav-burger{display:none;}

/* ---------- 频道 Tabs ---------- */
.channel-bar{
  border-top:1px solid var(--line);
  background:rgba(18,20,26,.72);
}
.channel-scroll{
  display:flex;
  align-items:center;
  gap:10px;
  min-height:48px;
  overflow-x:auto;
  white-space:nowrap;
  scrollbar-width:none;
  -ms-overflow-style:none;
  padding:7px 0;
}
.channel-scroll::-webkit-scrollbar{display:none;}
.channel-scroll a{
  display:inline-flex;
  align-items:center;
  height:34px;
  padding:0 16px;
  border-radius:var(--radius-pill);
  border:1px solid var(--line);
  color:var(--text-2);
  font-size:14px;
  font-weight:600;
  transition:border-color var(--dur) var(--ease),color var(--dur) var(--ease),background-color var(--dur) var(--ease);
}
.channel-scroll a:hover{border-color:rgba(20,210,180,.5);color:var(--cyan);}
.channel-scroll a.is-active{
  background:var(--primary);
  border-color:var(--primary);
  color:#16110D;
}

/* ---------- 移动菜单 ---------- */
.off-canvas{
  position:fixed;
  top:0;
  right:0;
  width:min(320px,86vw);
  height:100%;
  z-index:90;
  background:var(--panel);
  border-left:1px solid var(--line);
  padding:24px 20px;
  transform:translateX(105%);
  transition:transform 240ms var(--ease);
  overflow-y:auto;
}
.off-canvas.is-open{transform:translateX(0);}
.off-canvas h4{font-size:14px;color:var(--text-3);font-weight:600;margin-bottom:12px;}
.off-canvas a{
  display:block;
  padding:12px 14px;
  border-radius:var(--radius-btn);
  border:1px solid var(--line);
  margin-bottom:10px;
  color:var(--text-2);
  font-size:15px;
  font-weight:600;
}
.off-canvas a.is-active{background:var(--primary);border-color:var(--primary);color:#16110D;}
.off-canvas-mask{
  position:fixed;
  inset:0;
  background:rgba(6,7,10,.62);
  z-index:80;
  opacity:0;
  visibility:hidden;
  transition:opacity 220ms var(--ease),visibility 220ms var(--ease);
}
.off-canvas-mask.is-open{opacity:1;visibility:visible;}
.oc-close{
  display:flex;
  justify-content:flex-end;
  margin-bottom:8px;
}
.oc-close button{
  background:transparent;
  border:1px solid var(--line);
  border-radius:var(--radius-btn);
  color:var(--text-2);
  height:38px;
  width:38px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
}

/* ---------- 分类 Hero ---------- */
.cat-hero{
  position:relative;
  padding:56px 0 52px;
  background-color:#0F1116;
  background-image:url('/assets/images/backpic/back-2.webp');
  background-size:cover;
  background-position:center;
  border-bottom:1px solid var(--line);
  overflow:hidden;
  scroll-margin-top:120px;
}
.cat-hero::before{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(100deg,rgba(15,17,22,.95) 0%,rgba(15,17,22,.84) 45%,rgba(15,17,22,.58) 100%);
}
.cat-hero::after{
  content:"";
  position:absolute;
  right:-60px;
  bottom:-80px;
  width:340px;
  height:340px;
  border-radius:50%;
  border:1px solid rgba(255,255,255,.07);
  background:radial-gradient(circle at 30% 30%,rgba(255,106,43,.16),transparent 62%);
  pointer-events:none;
}
.cat-hero .hero-inner{position:relative;z-index:1;}
.crumbs{
  display:flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  color:var(--text-3);
  margin-bottom:16px;
}
.crumbs a{color:var(--text-3);}
.crumbs a:hover{color:var(--cyan);}
.cat-hero h1{
  font-size:clamp(30px,4vw,46px);
  font-weight:800;
  letter-spacing:-.01em;
  max-width:720px;
}
.hero-sub{
  margin-top:14px;
  font-size:17px;
  color:var(--text-2);
  max-width:640px;
}
.hero-tags{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  margin-top:24px;
}
.hero-tags .pill{background:rgba(23,26,34,.78);border-color:var(--line);color:var(--text-2);}
.hero-tags .pill .dot-cyan{
  width:7px;height:7px;border-radius:50%;background:var(--cyan);display:inline-block;
}

/* ---------- 筛选行 ---------- */
.filter-bar{
  padding:26px 0;
  border-bottom:1px solid var(--line);
  scroll-margin-top:120px;
}
.filter-inner{
  display:flex;
  align-items:center;
  gap:14px;
  flex-wrap:wrap;
}
.filter-label{
  font-size:13px;
  color:var(--text-3);
  font-weight:600;
  letter-spacing:.02em;
}
.filter-scroll{
  display:flex;
  gap:10px;
  overflow-x:auto;
  padding-bottom:4px;
  scrollbar-width:none;
}
.filter-scroll::-webkit-scrollbar{display:none;}
.filter-scroll a{
  flex:0 0 auto;
  display:inline-flex;
  align-items:center;
  height:34px;
  padding:0 15px;
  border-radius:var(--radius-pill);
  border:1px solid var(--line);
  color:var(--text-2);
  font-size:13px;
  font-weight:600;
  transition:border-color var(--dur) var(--ease),color var(--dur) var(--ease),background-color var(--dur) var(--ease);
}
.filter-scroll a:hover{border-color:rgba(20,210,180,.55);color:var(--cyan);}
.filter-scroll a.is-on{background:rgba(255,106,43,.12);border-color:rgba(255,106,43,.4);color:var(--primary);}

/* ---------- 通用板块 ---------- */
.section{padding:72px 0;}
.section-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:20px;
  margin-bottom:32px;
  flex-wrap:wrap;
}
.section-head h2{font-size:clamp(24px,2.6vw,31px);}
.section-head p{color:var(--text-2);font-size:15px;margin-top:8px;}
.section-kicker{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  font-weight:600;
  color:var(--cyan);
  margin-bottom:10px;
}
.section-kicker::before{
  content:"";
  width:18px;height:2px;border-radius:2px;background:var(--cyan);display:inline-block;
}

/* ---------- 单列大图列表 ---------- */
.guide-list{
  display:flex;
  flex-direction:column;
  gap:20px;
  scroll-margin-top:120px;
}
.guide-row{
  display:grid;
  grid-template-columns:minmax(0,340px) minmax(0,1fr);
  gap:24px;
  align-items:stretch;
  background:var(--panel);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:18px;
  transition:transform var(--dur) var(--ease),border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.guide-row:hover{
  transform:translateY(-4px);
  border-color:rgba(255,106,43,.4);
  box-shadow:var(--shadow-card);
}
.guide-thumb{
  display:block;
  border-radius:var(--radius-img);
  overflow:hidden;
  background:var(--panel-2);
}
.guide-thumb img{
  width:100%;
  height:100%;
  aspect-ratio:16/10;
  object-fit:cover;
  border-radius:0;
  transition:transform 320ms var(--ease);
}
.guide-row:hover .guide-thumb img{transform:scale(1.03);}
.guide-body{
  display:flex;
  flex-direction:column;
  justify-content:center;
  gap:12px;
  min-width:0;
}
.meta-row{
  display:flex;
  align-items:center;
  gap:10px;
  font-size:13px;
  color:var(--text-3);
}
.meta-row .sep{width:1px;height:12px;background:var(--line-strong);display:inline-block;}
.guide-body h3{
  font-size:20px;
  line-height:1.45;
}
.guide-body h3 a{color:var(--text);}
.guide-body h3 a:hover{color:var(--primary-hover);}
.guide-body p{
  color:var(--text-2);
  font-size:15px;
  line-height:1.75;
  display:-webkit-box;
  -webkit-line-clamp:3;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.link-more{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:14px;
  font-weight:600;
  color:var(--cyan);
}
.link-more:hover{color:var(--primary-hover);}
.link-more svg{transition:transform var(--dur) var(--ease);}
.link-more:hover svg{transform:translateX(3px);}

.list-more{
  display:flex;
  justify-content:center;
  margin-top:32px;
  padding-top:28px;
  border-top:1px dashed var(--line);
  gap:12px;
  flex-wrap:wrap;
}

/* ---------- 上手路径（浅色反转区块） ---------- */
.path-section{
  background:var(--light-bg);
  color:var(--light-text);
  border-top:1px solid rgba(0,0,0,.08);
  border-bottom:1px solid rgba(0,0,0,.08);
}
.path-section h2{color:var(--light-text);}
.path-section .section-kicker{color:#0F8F7C;}
.path-section .section-kicker::before{background:#0F8F7C;}
.path-section .section-head p{color:#4B5262;}
.path-grid{
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
  gap:20px;
}
.path-card{
  position:relative;
  background:#FFFFFF;
  border:1px solid rgba(0,0,0,.08);
  border-radius:var(--radius-card);
  padding:22px 20px 24px;
  transition:transform var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.path-card:hover{transform:translateY(-4px);box-shadow:0 14px 30px rgba(16,20,32,.12);}
.path-num{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:34px;height:34px;
  border-radius:50%;
  background:rgba(255,106,43,.12);
  color:#D2501B;
  font-weight:800;
  font-size:14px;
  margin-bottom:14px;
}
.path-card h3{font-size:18px;color:var(--light-text);margin-bottom:8px;}
.path-card p{font-size:14.5px;color:#4B5262;line-height:1.7;}
.path-bar{
  height:6px;
  border-radius:999px;
  background:rgba(0,0,0,.08);
  margin-top:16px;
  overflow:hidden;
}
.path-bar span{
  display:block;
  height:100%;
  border-radius:999px;
  background:linear-gradient(90deg,#FF6A2B,#14D2B4);
}
.path-foot{
  margin-top:26px;
  font-size:14px;
  color:#4B5262;
}
.path-foot a{color:#D2501B;font-weight:600;}
.path-foot a:hover{color:#B03E0F;}

/* ---------- FAQ ---------- */
.faq-grid{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:18px 22px;
}
.faq-item{
  background:var(--panel);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  overflow:hidden;
  transition:border-color var(--dur) var(--ease),background-color var(--dur) var(--ease);
  position:relative;
}
.faq-item::before{
  content:"";
  position:absolute;
  left:0;top:0;bottom:0;
  width:3px;
  background:transparent;
  transition:background-color var(--dur) var(--ease);
}
.faq-item[open]{background:var(--panel-2);border-color:rgba(255,106,43,.28);}
.faq-item[open]::before{background:var(--primary);}
.faq-item summary{
  list-style:none;
  cursor:pointer;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:14px;
  padding:18px 20px;
  font-size:17px;
  font-weight:600;
  color:var(--text);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-ico{
  flex:0 0 auto;
  width:20px;height:20px;
  position:relative;
  color:var(--text-3);
}
.faq-ico::before,.faq-ico::after{
  content:"";
  position:absolute;
  background:currentColor;
  border-radius:2px;
  transition:transform var(--dur) var(--ease),background-color var(--dur) var(--ease);
}
.faq-ico::before{left:0;top:9px;width:20px;height:2px;}
.faq-ico::after{left:9px;top:0;width:2px;height:20px;}
.faq-item[open] .faq-ico{color:var(--primary);}
.faq-item[open] .faq-ico::after{transform:scaleY(0);}
.faq-body{
  padding:0 20px 20px;
  color:var(--text-2);
  font-size:15px;
  line-height:1.85;
}

/* ---------- CTA ---------- */
.cta-section{padding:0 0 84px;}
.cta-bar{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:28px;
  flex-wrap:wrap;
  background:linear-gradient(115deg,rgba(255,106,43,.14),rgba(20,210,180,.08) 70%,rgba(23,26,34,.9));
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:30px 32px;
  transition:transform var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.cta-bar:hover{transform:translateY(-3px);border-color:rgba(255,106,43,.35);}
.cta-copy h2{font-size:23px;}
.cta-copy p{color:var(--text-2);font-size:15px;margin-top:8px;}
.cta-actions{
  display:flex;
  align-items:center;
  gap:12px;
  flex-wrap:wrap;
}
.cta-count{
  font-size:13px;
  color:var(--text-3);
  font-variant-numeric:tabular-nums;
}
.cta-count strong{color:var(--cyan);font-weight:700;}

/* ---------- 页脚 ---------- */
.site-footer{
  background:#0B0D12;
  border-top:1px solid var(--line);
  padding:56px 0 0;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.4fr 1fr 1fr 1fr;
  gap:36px;
  padding-bottom:40px;
}
.footer-brand .logo{margin-bottom:14px;}
.footer-brand p{
  color:var(--text-3);
  font-size:14px;
  line-height:1.75;
  max-width:280px;
}
.footer-col h4{
  font-size:14px;
  font-weight:700;
  color:var(--text);
  margin-bottom:16px;
}
.footer-col ul li{margin-bottom:10px;}
.footer-col ul li a{
  color:var(--text-3);
  font-size:14px;
}
.footer-col ul li a:hover{color:var(--cyan);}
.footer-bottom{
  border-top:1px solid var(--line);
  padding:20px 0 26px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:14px;
  flex-wrap:wrap;
}
.footer-bottom p{color:var(--text-3);font-size:13px;}
.footer-bottom .tech{color:#5A6273;}

/* ---------- 响应式 ---------- */
@media screen and (max-width:1199px){
  .path-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
}
@media screen and (max-width:1024px){
  .section{padding:56px 0;}
  .nav-search{max-width:300px;}
  .guide-row{grid-template-columns:minmax(0,280px) minmax(0,1fr);gap:20px;}
  .cta-section{padding-bottom:64px;}
}
@media screen and (max-width:900px){
  .keep-desktop{display:none !important;}
  .nav-burger{display:inline-flex;}
  .nav-search{max-width:none;flex:1 1 auto;}
  .logo-text{font-size:16px;}
}
@media screen and (max-width:768px){
  .guide-row{grid-template-columns:1fr;}
  .guide-thumb img{aspect-ratio:16/9;}
  .faq-grid{grid-template-columns:1fr;}
  .cat-hero{padding:44px 0 40px;}
  .hero-sub{font-size:16px;}
  .cta-bar{padding:24px 22px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
}
@media screen and (max-width:520px){
  .grid-container{padding-left:16px;padding-right:16px;}
  .section{padding:40px 0;}
  .nav-row{min-height:62px;gap:12px;}
  .logo-text{font-size:15px;max-width:150px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
  .path-grid{grid-template-columns:1fr;}
  .guide-body h3{font-size:18px;}
  .cta-actions{width:100%;}
  .cta-actions .btn{flex:1 1 auto;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}

/* roulang page: category3 */
:root{
  --bg:#0F1116;
  --panel:#171A22;
  --panel-2:#1E222C;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.16);
  --brand:#FF6A2B;
  --brand-hover:#FF8347;
  --brand-active:#E6551A;
  --accent:#14D2B4;
  --violet:#8B5CF6;
  --text:#F3F5F9;
  --text-2:#A7AFBF;
  --text-3:#6E7787;
  --light-bg:#F6F7F9;
  --light-text:#14161C;
  --light-line:rgba(0,0,0,.08);
  --r-card:14px;
  --r-btn:10px;
  --r-img:12px;
  --shadow-card:0 1px 0 rgba(255,255,255,.03), 0 10px 26px rgba(0,0,0,.32);
  --shadow-hover:0 12px 32px rgba(0,0,0,.45);
  --shadow-brand:0 8px 24px rgba(255,106,43,.35);
  --ease:cubic-bezier(.2,.7,.3,1);
  --gap:22px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:system-ui,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:var(--brand);text-decoration:none;transition:color .2s var(--ease),opacity .2s var(--ease)}
a:hover{color:var(--brand-hover)}
button,input{font:inherit;color:inherit}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;line-height:1.3;font-weight:700;letter-spacing:-.01em}
p{margin:0}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:6px}
.num,.date,.count{font-variant-numeric:tabular-nums}

.grid-container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding-left:20px;
  padding-right:20px;
}
.sec{padding:80px 0}
.sec-tight{padding:56px 0}
.sec-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:14px;margin-bottom:32px}
.sec-head h2{font-size:clamp(23px,2.3vw,30px)}
.sec-head p{color:var(--text-2);font-size:15px;margin-top:8px;max-width:640px}
.sec-head .more{font-size:14px;font-weight:600;color:var(--accent)}
.sec-head .more:hover{color:var(--brand-hover)}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;color:var(--accent);letter-spacing:.02em}
.eyebrow::before{content:"";width:18px;height:2px;background:var(--accent);border-radius:2px}

/* ============ 顶部双层导航 ============ */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(15,17,22,.86);
  backdrop-filter:blur(8px);
  -webkit-backdrop-filter:blur(8px);
  border-bottom:1px solid var(--line);
}
.nav-row{display:flex;align-items:center;gap:18px;height:68px}
.logo{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto;color:var(--text)}
.logo:hover{color:var(--text)}
.logo-mark{display:inline-flex;width:28px;height:28px}
.logo-text{font-size:17px;font-weight:800;letter-spacing:-.01em;white-space:nowrap}
.nav-search{
  flex:1 1 auto;max-width:420px;display:flex;align-items:center;gap:8px;
  height:44px;padding:0 14px;
  background:#12141A;border:1px solid var(--line);border-radius:var(--r-btn);
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.nav-search .s-icon{color:var(--text-3);display:inline-flex}
.nav-search input{
  flex:1;background:transparent;border:0;outline:none;font-size:14px;min-width:0;
}
.nav-search input::placeholder{color:var(--text-3)}
.nav-search:focus-within{border-color:var(--brand);box-shadow:0 0 0 3px rgba(255,106,43,.18)}
.nav-actions{display:flex;align-items:center;gap:10px;margin-left:auto}
.icon-btn{
  display:inline-flex;align-items:center;gap:6px;
  height:44px;padding:0 14px;
  background:transparent;border:1px solid var(--line);border-radius:var(--r-btn);
  color:var(--text-2);font-size:14px;font-weight:600;cursor:pointer;
  transition:all .2s var(--ease);
}
.icon-btn:hover{color:var(--text);border-color:var(--line-strong);background:rgba(255,255,255,.04)}
.icon-btn:active{transform:translateY(1px)}
.nav-burger{display:none;padding:0 12px}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 20px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;
  transition:all .2s var(--ease);white-space:nowrap;
}
.btn-sm{min-height:40px;padding:0 16px;font-size:14px}
.btn-primary{background:var(--brand);color:#16181D}
.btn-primary:hover{background:var(--brand-hover);color:#16181D;transform:translateY(-2px);box-shadow:var(--shadow-brand)}
.btn-primary:active{transform:translateY(0);background:var(--brand-active)}
.btn-ghost{background:transparent;border-color:var(--line-strong);color:var(--text)}
.btn-ghost:hover{border-color:var(--brand);color:var(--brand-hover);transform:translateY(-2px)}
.btn-ghost:active{transform:translateY(0)}
.btn[disabled],.btn.is-disabled{opacity:.45;pointer-events:none}

.channel-bar{height:48px;border-top:1px solid var(--line);display:flex;align-items:center}
.channel-scroll{
  display:flex;gap:10px;overflow-x:auto;scrollbar-width:none;
  padding:0 0 2px;scroll-margin-top:120px;
}
.channel-scroll::-webkit-scrollbar{display:none}
.channel-scroll a{
  flex:0 0 auto;padding:7px 16px;border-radius:999px;
  border:1px solid var(--line);color:var(--text-2);
  font-size:14px;font-weight:600;line-height:1.2;
  transition:all .2s var(--ease);
}
.channel-scroll a:hover{color:var(--text);border-color:var(--line-strong)}
.channel-scroll a.is-active{background:var(--brand);color:#16181D;border-color:transparent}
.channel-scroll a.is-active:hover{background:var(--brand-hover);color:#16181D}

.mobile-menu{display:none;border-top:1px solid var(--line);background:rgba(15,17,22,.98)}
.mobile-menu.is-open{display:block}
.mobile-menu ul{padding:12px 20px 18px}
.mobile-menu li+li{margin-top:8px}
.mobile-menu a{display:block;padding:12px 14px;border:1px solid var(--line);border-radius:var(--r-btn);color:var(--text-2);font-weight:600;font-size:15px}
.mobile-menu a.is-active{color:#16181D;background:var(--brand);border-color:transparent}

/* ============ Hero ============ */
.hero{
  position:relative;overflow:hidden;
  background-color:#12141A;
  background-image:linear-gradient(90deg,rgba(15,17,22,.94) 0%,rgba(15,17,22,.78) 52%,rgba(15,17,22,.62) 100%),url("/assets/images/backpic/back-2.webp");
  background-size:cover;background-position:center right;
  border-bottom:1px solid var(--line);
}
.hero::after{
  content:"";position:absolute;right:-80px;bottom:-120px;width:340px;height:340px;
  background:
    repeating-linear-gradient(45deg,rgba(255,106,43,.14) 0 1px,transparent 1px 14px),
    radial-gradient(circle at 60% 40%,rgba(20,210,180,.16),transparent 62%);
  transform:rotate(12deg);pointer-events:none;opacity:.9;
}
.hero-inner{position:relative;z-index:2;padding:66px 0 58px;max-width:720px}
.hero h1{
  font-size:clamp(30px,4vw,44px);font-weight:800;letter-spacing:-.01em;
  margin:14px 0 14px;
}
.hero .lead{color:var(--text-2);font-size:17px;line-height:1.8;max-width:600px}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px}
.pill{
  display:inline-flex;align-items:center;gap:6px;
  padding:7px 14px;border-radius:999px;font-size:13px;font-weight:600;
  background:rgba(20,210,180,.12);color:var(--accent);border:1px solid rgba(20,210,180,.22);
}
.pill.orange{background:rgba(255,106,43,.12);color:var(--brand);border-color:rgba(255,106,43,.24)}
.pill.mute{background:rgba(255,255,255,.05);color:var(--text-2);border-color:var(--line)}

/* ============ 筛选 pill 行 ============ */
.filter-bar{
  border-bottom:1px solid var(--line);
  background:rgba(23,26,34,.62);
  position:relative;
}
.filter-scroll{
  display:flex;gap:10px;overflow-x:auto;scrollbar-width:none;
  padding:14px 0;scroll-margin-top:120px;
}
.filter-scroll::-webkit-scrollbar{display:none}
.filter-scroll a{
  flex:0 0 auto;padding:9px 16px;border-radius:999px;
  border:1px solid var(--line);color:var(--text-2);font-size:14px;font-weight:600;
  transition:all .2s var(--ease);
}
.filter-scroll a:hover{color:var(--text);border-color:var(--accent);background:rgba(20,210,180,.08)}
.filter-scroll a.is-on{background:var(--accent);color:#0F1116;border-color:transparent}

/* ============ 卡片系统 ============ */
.card{
  background:var(--panel);border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;box-shadow:var(--shadow-card);
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.card:hover{transform:translateY(-4px);border-color:rgba(255,106,43,.4);box-shadow:var(--shadow-hover)}
.card-img{width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:var(--r-img) var(--r-img) 0 0;background:var(--panel-2)}
.card-body{padding:18px}
.card-meta{display:flex;align-items:center;gap:10px;font-size:12.5px;color:var(--text-3);margin-bottom:10px}
.card-meta .dot{width:1px;height:12px;background:var(--line-strong)}
.card h3{font-size:19px;margin-bottom:8px}
.card p{color:var(--text-2);font-size:15px;line-height:1.75}
.clamp-2{display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.clamp-3{display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.badge{
  display:inline-flex;align-items:center;padding:3px 10px;border-radius:999px;
  font-size:12px;font-weight:600;line-height:1.6;
  background:rgba(255,106,43,.12);color:var(--brand);
}
.badge.cyan{background:rgba(20,210,180,.12);color:var(--accent)}
.badge.violet{background:rgba(139,92,246,.14);color:#B79BF8}

/* 速览三块 */
.overview-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:var(--gap)}
.overview-item{
  padding:24px;border-radius:var(--r-card);border:1px solid var(--line);
  background:linear-gradient(180deg,rgba(30,34,44,.9),rgba(23,26,34,.9));
  transition:border-color .22s var(--ease),transform .22s var(--ease);
}
.overview-item:hover{border-color:rgba(20,210,180,.42);transform:translateY(-3px)}
.overview-item .idx{
  display:inline-flex;align-items:center;justify-content:center;
  width:36px;height:36px;border-radius:10px;margin-bottom:14px;
  font-size:14px;font-weight:700;color:#0F1116;background:var(--accent);
}
.overview-item h3{font-size:19px;margin-bottom:10px}
.overview-item p{color:var(--text-2);font-size:15px}

/* 高密度三列列表 */
.dense-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.dense-card{
  display:flex;gap:14px;padding:14px;
  background:var(--panel);border:1px solid var(--line);border-radius:var(--r-card);
  transition:all .22s var(--ease);
}
.dense-card:hover{transform:translateY(-3px);border-color:rgba(255,106,43,.42);box-shadow:var(--shadow-hover)}
.dense-card .thumb{
  flex:0 0 96px;width:96px;height:96px;object-fit:cover;border-radius:10px;background:var(--panel-2);
}
.dense-card h3{font-size:16.5px;line-height:1.45;margin-bottom:6px}
.dense-card p{color:var(--text-2);font-size:14px;line-height:1.7}
.dense-meta{display:flex;align-items:center;gap:8px;margin-bottom:8px;font-size:12px;color:var(--text-3)}
.list-foot{display:flex;justify-content:center;margin-top:34px}

/* 浅色反转：适用人群 */
.reversed{
  background:var(--light-bg);color:var(--light-text);
  border-top:1px solid var(--light-line);border-bottom:1px solid var(--light-line);
}
.reversed .sec-head h2{color:var(--light-text)}
.reversed .sec-head p{color:#4A505C}
.reversed .eyebrow{color:#0E9C83}
.reversed .eyebrow::before{background:#0E9C83}
.audience-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.audience-item{
  background:#fff;border:1px solid var(--light-line);border-radius:var(--r-card);
  padding:22px;transition:transform .22s var(--ease),box-shadow .22s var(--ease);
}
.audience-item:hover{transform:translateY(-4px);box-shadow:0 12px 28px rgba(20,22,28,.12)}
.audience-item .ico{
  width:40px;height:40px;border-radius:10px;display:inline-flex;align-items:center;justify-content:center;
  background:rgba(255,106,43,.12);color:#E6551A;margin-bottom:14px;
}
.audience-item h3{font-size:17px;margin-bottom:8px;color:var(--light-text)}
.audience-item p{font-size:14.5px;color:#4A505C;line-height:1.75}
.reversed .btn-primary{color:#fff;background:var(--brand)}
.reversed .btn-primary:hover{background:var(--brand-hover);color:#fff}
.reversed .btn-ghost{border-color:rgba(0,0,0,.16);color:var(--light-text)}
.reversed .btn-ghost:hover{border-color:var(--brand);color:#E6551A}
.reversed .more{color:#0E9C83}

/* 流程 */
.flow-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.flow-step{position:relative;padding:24px 22px;border:1px solid var(--line);border-radius:var(--r-card);background:var(--panel-2)}
.flow-step .step-no{
  font-size:13px;font-weight:700;color:var(--accent);letter-spacing:.08em;margin-bottom:12px;display:block;
}
.flow-step h3{font-size:18px;margin-bottom:8px}
.flow-step p{color:var(--text-2);font-size:14.5px}
.flow-step::before{content:"";position:absolute;left:22px;top:0;width:44px;height:3px;background:var(--brand);border-radius:0 0 3px 3px}

/* FAQ */
.faq-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}
.faq-item{
  background:var(--panel);border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;transition:border-color .22s var(--ease),background .22s var(--ease);
}
.faq-item summary{
  list-style:none;cursor:pointer;padding:18px 20px 18px 22px;
  font-size:17px;font-weight:600;display:flex;align-items:center;justify-content:space-between;gap:12px;
  border-left:3px solid transparent;transition:all .2s var(--ease);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary .chev{flex:0 0 auto;color:var(--text-3);transition:transform .22s var(--ease)}
.faq-item[open]{border-color:rgba(255,106,43,.34);background:#1B1F29}
.faq-item[open] summary{border-left-color:var(--brand);background:rgba(255,255,255,.03)}
.faq-item[open] summary .chev{transform:rotate(180deg);color:var(--brand)}
.faq-item .answer{padding:0 22px 20px 22px;color:var(--text-2);font-size:15px;line-height:1.8}
.faq-item summary:hover{color:#fff;background:rgba(255,255,255,.03)}

/* CTA 条 */
.cta-band{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:20px;
  padding:26px 28px;border:1px solid var(--line);border-radius:var(--r-card);
  background:linear-gradient(120deg,rgba(255,106,43,.14),rgba(23,26,34,.96) 58%);
  transition:border-color .22s var(--ease),transform .22s var(--ease);
}
.cta-band:hover{border-color:rgba(255,106,43,.44);transform:translateY(-2px)}
.cta-band .cta-text{font-size:18px;font-weight:700}
.cta-band .cta-sub{font-size:14px;color:var(--text-2);margin-top:4px}
.cta-actions{display:flex;align-items:center;gap:12px;flex-wrap:wrap}
.cta-count{font-size:13px;color:var(--text-2);padding:8px 14px;border:1px dashed var(--line-strong);border-radius:999px}

/* 页脚 */
.site-footer{background:#0B0D12;border-top:1px solid var(--line);padding:56px 0 26px;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:32px}
.footer-brand p{color:var(--text-2);font-size:14.5px;margin-top:14px;max-width:280px}
.footer-col h4{font-size:15px;margin-bottom:16px;color:var(--text)}
.footer-col li+li{margin-top:10px}
.footer-col a{color:var(--text-2);font-size:14.5px}
.footer-col a:hover{color:var(--brand-hover)}
.footer-bottom{
  margin-top:38px;padding-top:20px;border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px;
  color:var(--text-3);font-size:13.5px;
}
.footer-bottom .tech{color:var(--text-3)}

@media (max-width:1199px){
  .overview-grid{grid-template-columns:repeat(3,1fr)}
  .dense-grid{grid-template-columns:repeat(2,1fr)}
  .audience-grid{grid-template-columns:repeat(2,1fr)}
  .flow-grid{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:1024px){
  .sec{padding:56px 0}
  .nav-search{max-width:300px}
  .overview-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1.2fr 1fr 1fr}
}
@media (max-width:820px){
  .nav-search{display:none}
  .nav-burger{display:inline-flex}
  .keep-desktop{display:none}
  .hero-inner{padding:48px 0 44px}
}
@media (max-width:640px){
  .grid-container{padding-left:16px;padding-right:16px}
  .sec{padding:40px 0}
  .dense-grid{grid-template-columns:1fr}
  .faq-grid{grid-template-columns:1fr}
  .audience-grid{grid-template-columns:1fr}
  .flow-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr;gap:24px}
  .hero{background-image:linear-gradient(180deg,rgba(15,17,22,.96) 0%,rgba(15,17,22,.8) 100%),url("/assets/images/backpic/back-2.webp")}
  .hero::after{opacity:.45}
  .cta-band{padding:22px}
  .cta-actions .btn{flex:1 1 auto}
  .dense-card .thumb{flex:0 0 84px;width:84px;height:84px}
}

/* roulang page: category2 */
:root{
  --bg:#0F1116;
  --panel:#171A22;
  --panel-2:#1E222C;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.18);
  --primary:#FF6A2B;
  --primary-h:#FF8347;
  --primary-a:#E6551A;
  --cyan:#14D2B4;
  --purple:#8B5CF6;
  --text:#F3F5F9;
  --text-2:#A7AFBF;
  --text-3:#6E7787;
  --r-card:14px;
  --r-btn:10px;
  --r-img:12px;
  --r-pill:999px;
  --sh-card:0 12px 32px rgba(0,0,0,.45);
  --sh-primary:0 8px 24px rgba(255,106,43,.35);
  --container:1200px;
  --ease:cubic-bezier(.2,.7,.3,1);
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:system-ui,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:var(--primary);text-decoration:none;transition:color .2s var(--ease)}
a:hover{color:var(--primary-h)}
h1,h2,h3,h4{margin:0;color:var(--text);font-weight:700;line-height:1.32;letter-spacing:-.01em}
h1{font-size:clamp(30px,4vw,48px);font-weight:800}
h2{font-size:clamp(22px,2.6vw,30px)}
h3{font-size:clamp(18px,1.6vw,20px)}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
button{font-family:inherit}
input{font-family:inherit}
:focus-visible{outline:2px solid var(--cyan);outline-offset:2px}

.grid-container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding-left:20px;
  padding-right:20px;
}
.grid-container.full{max-width:100%}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:46px;
  padding:0 22px;
  border:1px solid transparent;
  border-radius:var(--r-btn);
  font-size:15px;
  font-weight:600;
  line-height:1;
  cursor:pointer;
  transition:transform .22s var(--ease),background-color .22s var(--ease),border-color .22s var(--ease),box-shadow .22s var(--ease),color .22s var(--ease);
}
.btn-primary{background:var(--primary);color:#1A0E07}
.btn-primary:hover{background:var(--primary-h);color:#1A0E07;transform:translateY(-2px);box-shadow:var(--sh-primary)}
.btn-primary:active{background:var(--primary-a);transform:translateY(0);box-shadow:none}
.btn-ghost{background:rgba(255,255,255,.02);border-color:var(--line-strong);color:var(--text)}
.btn-ghost:hover{border-color:rgba(255,106,43,.5);color:var(--text);background:rgba(255,255,255,.05);transform:translateY(-2px)}
.btn-ghost:active{transform:translateY(0);background:rgba(255,255,255,.02)}
.btn-sm{min-height:40px;padding:0 18px;font-size:14px}
.btn[disabled],.btn.is-disabled{opacity:.45;transform:none;box-shadow:none;pointer-events:none}

/* ============ 导航 ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:rgba(15,17,22,.82);
  backdrop-filter:blur(8px);
  -webkit-backdrop-filter:blur(8px);
  border-bottom:1px solid var(--line);
}
.nav-row{
  display:flex;
  align-items:center;
  gap:22px;
  min-height:68px;
}
.logo{display:inline-flex;align-items:center;gap:10px;color:var(--text)}
.logo:hover{color:var(--text)}
.logo-mark{display:inline-flex;flex:0 0 auto}
.logo-text{font-size:18px;font-weight:800;letter-spacing:-.01em;white-space:nowrap}
.nav-search{
  position:relative;
  flex:1 1 auto;
  max-width:420px;
  display:flex;
  align-items:center;
}
.nav-search .s-icon{position:absolute;left:14px;display:inline-flex;color:var(--text-3);pointer-events:none}
.nav-search input[type="search"]{
  width:100%;
  height:44px;
  margin:0;
  padding:0 16px 0 42px;
  background:#12141A;
  border:1px solid var(--line);
  border-radius:var(--r-btn);
  color:var(--text);
  font-size:14px;
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease),background-color .2s var(--ease);
}
.nav-search input[type="search"]::placeholder{color:var(--text-3)}
.nav-search input[type="search"]:focus{outline:none;background:#151821;border-color:var(--primary);box-shadow:0 0 0 3px rgba(255,106,43,.18)}
.nav-actions{display:flex;align-items:center;gap:12px;margin-left:auto}
.icon-btn{
  display:inline-flex;
  align-items:center;
  gap:6px;
  min-height:40px;
  padding:0 14px;
  background:rgba(255,255,255,.02);
  border:1px solid var(--line);
  border-radius:var(--r-btn);
  color:var(--text-2);
  font-size:14px;
  font-weight:600;
  cursor:pointer;
  transition:color .2s var(--ease),border-color .2s var(--ease),background-color .2s var(--ease),transform .22s var(--ease);
}
.icon-btn:hover{color:var(--text);border-color:rgba(255,106,43,.45);background:rgba(255,255,255,.05);transform:translateY(-2px)}
.nav-burger{display:none;padding:0 12px}

.channel-bar{
  border-top:1px solid var(--line);
  background:rgba(11,13,18,.72);
}
.channel-scroll{
  display:flex;
  align-items:center;
  gap:10px;
  overflow-x:auto;
  padding:8px 0;
  scrollbar-width:none;
  -ms-overflow-style:none;
}
.channel-scroll::-webkit-scrollbar{display:none}
.channel-scroll a{
  flex:0 0 auto;
  display:inline-flex;
  align-items:center;
  min-height:32px;
  padding:0 16px;
  border:1px solid var(--line);
  border-radius:var(--r-pill);
  color:var(--text-2);
  font-size:14px;
  font-weight:600;
  line-height:1;
  white-space:nowrap;
  transition:color .2s var(--ease),border-color .2s var(--ease),background-color .2s var(--ease);
}
.channel-scroll a:hover{color:var(--text);border-color:rgba(255,106,43,.45);background:rgba(255,255,255,.04)}
.channel-scroll a.is-active{background:var(--primary);border-color:var(--primary);color:#1A0E07}
.channel-scroll a.is-active:hover{background:var(--primary-h);border-color:var(--primary-h);color:#1A0E07}

.mobile-menu{
  display:none;
  position:fixed;
  top:124px;
  left:16px;
  right:16px;
  z-index:70;
  padding:12px;
  background:var(--panel);
  border:1px solid var(--line-strong);
  border-radius:var(--r-card);
  box-shadow:var(--sh-card);
}
body.nav-open .mobile-menu{display:block}
.mobile-menu a{
  display:block;
  padding:12px 14px;
  border-radius:var(--r-btn);
  color:var(--text-2);
  font-size:15px;
  font-weight:600;
}
.mobile-menu a:hover{background:rgba(255,255,255,.05);color:var(--text)}
.mobile-menu a.is-active{background:rgba(255,106,43,.14);color:var(--primary-h)}

/* ============ 通用板块 ============ */
.section{padding:80px 0}
.section-tight{padding:56px 0}
.section-panel{background:var(--bg)}
.section-alt{background:#12141B;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-light{background:#F6F7F9;color:#14161C;border-top:1px solid rgba(0,0,0,.08);border-bottom:1px solid rgba(0,0,0,.08)}
.section-light h2,.section-light h3,.section-light h4{color:#14161C}
.section-light .lead,.section-light .muted{color:#4C5462}
.section-light .card{background:#fff;border-color:rgba(0,0,0,.08)}
.section-light .card:hover{border-color:rgba(255,106,43,.5);box-shadow:0 12px 32px rgba(15,17,22,.12)}
.section-light .card-title{color:#14161C}
.section-light .card-text{color:#4C5462}
.section-light .badge{background:rgba(255,106,43,.14);color:#BF4710}
.section-light .badge-cyan{background:rgba(15,160,140,.14);color:#0B7C6C}
.section-light .badge-purple{background:rgba(139,92,246,.14);color:#5B34C6}
.section-light .btn-primary{color:#fff}
.section-light .btn-primary:hover{color:#fff}
.section-light .check-list li{color:#3A4150}
.section-light .check-list li svg{color:#0B7C6C}

.section-head{max-width:760px;margin-bottom:36px}
.section-head h2{font-size:clamp(22px,2.6vw,30px)}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  margin-bottom:14px;
  font-size:13px;
  font-weight:700;
  letter-spacing:.08em;
  color:var(--cyan);
  text-transform:uppercase;
}
.section-light .eyebrow{color:#0B7C6C}
.lead{margin-top:14px;color:var(--text-2);font-size:16px;line-height:1.8}

/* ============ Hero ============ */
.page-hero{
  position:relative;
  padding:72px 0 64px;
  background:
    linear-gradient(100deg,rgba(15,17,22,.94) 0%,rgba(15,17,22,.78) 52%,rgba(15,17,22,.6) 100%),
    url(/assets/images/backpic/back-2.webp) center/cover no-repeat;
  border-bottom:1px solid var(--line);
  overflow:hidden;
}
.page-hero::after{
  content:"";
  position:absolute;
  right:-40px;
  bottom:-60px;
  width:320px;
  height:320px;
  background-image:radial-gradient(rgba(20,210,180,.4) 1px,transparent 1px);
  background-size:16px 16px;
  opacity:.35;
  transform:rotate(-6deg);
  pointer-events:none;
}
.hero-inner{position:relative;z-index:2;max-width:700px}
.hero-chip{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:6px 14px;
  margin-bottom:20px;
  border:1px solid rgba(20,210,180,.35);
  border-radius:var(--r-pill);
  background:rgba(20,210,180,.1);
  color:var(--cyan);
  font-size:13px;
  font-weight:700;
  letter-spacing:.02em;
}
.page-hero h1{margin-bottom:16px;max-width:640px}
.hero-sub{max-width:600px;color:var(--text-2);font-size:17px;line-height:1.8}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}
.hero-pills{display:flex;flex-wrap:wrap;gap:10px;margin-top:30px}
.hero-pills span{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:7px 14px;
  border:1px solid var(--line);
  border-radius:var(--r-pill);
  background:rgba(255,255,255,.03);
  color:var(--text-2);
  font-size:13px;
  font-weight:600;
  font-variant-numeric:tabular-nums;
}
.hero-pills span i{width:6px;height:6px;border-radius:50%;background:var(--primary);display:inline-block}
.hero-pills span:nth-child(2) i{background:var(--cyan)}
.hero-pills span:nth-child(3) i{background:var(--purple)}
.hero-pills span:nth-child(4) i{background:var(--text-3)}

/* ============ 筛选条 ============ */
.filter-bar{
  border-bottom:1px solid var(--line);
  background:#0C0E13;
}
.filter-scroll{
  display:flex;
  align-items:center;
  gap:10px;
  overflow-x:auto;
  padding:14px 0;
  scrollbar-width:none;
}
.filter-scroll::-webkit-scrollbar{display:none}
.filter-scroll a{
  flex:0 0 auto;
  display:inline-flex;
  align-items:center;
  min-height:34px;
  padding:0 16px;
  border:1px solid var(--line);
  border-radius:var(--r-pill);
  color:var(--text-3);
  font-size:13px;
  font-weight:600;
  line-height:1;
  transition:color .2s var(--ease),border-color .2s var(--ease),background-color .2s var(--ease);
}
.filter-scroll a:hover{color:var(--text);border-color:rgba(20,210,180,.45)}
.filter-scroll a.is-active{background:rgba(20,210,180,.12);border-color:rgba(20,210,180,.4);color:var(--cyan)}
.filter-note{margin-left:auto;flex:0 0 auto;color:var(--text-3);font-size:13px;font-variant-numeric:tabular-nums}

/* ============ 卡片 ============ */
.card{
  display:flex;
  flex-direction:column;
  background:var(--panel);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  overflow:hidden;
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.card:hover{transform:translateY(-4px);border-color:rgba(255,106,43,.4);box-shadow:var(--sh-card)}
.card-media{position:relative;aspect-ratio:16/9;overflow:hidden;background:#1B1F28}
.card-media img{width:100%;height:100%;object-fit:cover;border-radius:0}
.card-body{padding:22px 22px 24px}
.card-meta{
  display:flex;
  align-items:center;
  gap:10px;
  margin-bottom:12px;
  color:var(--text-3);
  font-size:13px;
  font-variant-numeric:tabular-nums;
}
.card-meta .sep{width:1px;height:12px;background:var(--line-strong);display:inline-block}
.card-title{
  font-size:19px;
  font-weight:700;
  line-height:1.45;
  color:var(--text);
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.card-text{
  margin-top:10px;
  color:var(--text-2);
  font-size:15px;
  line-height:1.8;
  display:-webkit-box;
  -webkit-line-clamp:3;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.card-link{
  display:inline-flex;
  align-items:center;
  gap:6px;
  margin-top:18px;
  color:var(--primary);
  font-size:14px;
  font-weight:600;
}
.card-link svg{transition:transform .22s var(--ease)}
.card:hover .card-link svg{transform:translateX(3px)}

.badge{
  display:inline-flex;
  align-items:center;
  padding:4px 11px;
  border-radius:var(--r-pill);
  background:rgba(255,106,43,.12);
  color:var(--primary-h);
  font-size:12px;
  font-weight:600;
  line-height:1.6;
}
.badge-cyan{background:rgba(20,210,180,.12);color:var(--cyan)}
.badge-purple{background:rgba(139,92,246,.14);color:#B69CFF}

/* ============ 双列大卡网格 ============ */
.type-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}

/* ============ 场景卡片 ============ */
.scene-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.scene-card{
  padding:28px 24px;
  background:#fff;
  border:1px solid rgba(0,0,0,.08);
  border-radius:var(--r-card);
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.scene-card:hover{transform:translateY(-4px);border-color:rgba(255,106,43,.5);box-shadow:0 12px 32px rgba(15,17,22,.12)}
.scene-icon{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:46px;
  height:46px;
  margin-bottom:18px;
  border-radius:12px;
  background:rgba(255,106,43,.12);
  color:#D2521B;
}
.scene-card h3{margin-bottom:10px;font-size:19px}
.scene-card p{color:#4C5462;font-size:15px;line-height:1.8}
.check-list{margin-top:18px;display:grid;gap:10px}
.check-list li{display:flex;align-items:flex-start;gap:9px;color:#3A4150;font-size:14px;line-height:1.7}
.check-list svg{flex:0 0 auto;margin-top:4px;color:#0B7C6C}

/* ============ 流程 ============ */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.step{
  position:relative;
  padding:26px 22px 24px;
  background:var(--panel);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  transition:border-color .22s var(--ease),transform .22s var(--ease);
}
.step:hover{border-color:rgba(20,210,180,.4);transform:translateY(-4px)}
.step::before{
  content:"";
  position:absolute;
  top:0;
  left:22px;
  right:22px;
  height:3px;
  border-radius:0 0 3px 3px;
  background:linear-gradient(90deg,var(--primary),var(--cyan));
  opacity:.85;
}
.step-num{
  display:block;
  margin-bottom:14px;
  color:var(--cyan);
  font-size:13px;
  font-weight:700;
  letter-spacing:.1em;
  font-variant-numeric:tabular-nums;
}
.step h3{font-size:18px;margin-bottom:10px}
.step p{color:var(--text-2);font-size:14px;line-height:1.8}

/* ============ 数据 ============ */
.stat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin-top:8px}
.stat{
  padding:26px 24px;
  background:var(--panel-2);
  border:1px solid var(--line);
  border-radius:var(--r-card);
}
.stat-num{
  display:block;
  font-size:clamp(26px,3vw,34px);
  font-weight:800;
  color:var(--primary);
  font-variant-numeric:tabular-nums;
  letter-spacing:-.02em;
}
.stat:nth-child(2n) .stat-num{color:var(--cyan)}
.stat-label{margin-top:8px;color:var(--text-2);font-size:14px}
.stat-desc{margin-top:6px;color:var(--text-3);font-size:13px;line-height:1.7}
.stat-note{
  margin-top:28px;
  padding:22px 24px;
  background:rgba(255,106,43,.06);
  border:1px solid rgba(255,106,43,.22);
  border-radius:var(--r-card);
  color:var(--text-2);
  font-size:15px;
  line-height:1.8;
}
.stat-note strong{color:var(--text)}

/* ============ FAQ ============ */
.faq-accordion{
  display:grid;
  grid-template-columns:repeat(2,1fr);
  gap:16px;
  align-items:start;
  margin:0;
  padding:0;
  list-style:none;
  background:transparent;
  border:0;
}
.faq-accordion .accordion-item{
  background:var(--panel);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  overflow:hidden;
  transition:border-color .22s var(--ease),background-color .22s var(--ease),box-shadow .22s var(--ease);
}
.faq-accordion .accordion-item:hover{border-color:rgba(255,106,43,.35)}
.faq-accordion .accordion-item.is-active{
  border-color:rgba(255,106,43,.45);
  background:#1B1F28;
  box-shadow:inset 3px 0 0 var(--primary);
}
.faq-accordion .accordion-title{
  display:block;
  position:relative;
  padding:18px 52px 18px 22px;
  color:var(--text);
  font-size:17px;
  font-weight:600;
  line-height:1.55;
  border:0;
}
.faq-accordion .accordion-title:hover{color:var(--primary-h)}
.faq-accordion .accordion-title::before{
  content:"+";
  position:absolute;
  right:20px;
  top:50%;
  transform:translateY(-50%);
  margin:0;
  width:auto;
  height:auto;
  background:none;
  color:var(--cyan);
  font-size:22px;
  font-weight:600;
  line-height:1;
}
.faq-accordion .accordion-item.is-active .accordion-title::before{content:"−";color:var(--primary)}
.faq-accordion .accordion-content{
  padding:0 22px 20px;
  border:0;
  background:transparent;
  color:var(--text-2);
  font-size:15px;
  line-height:1.85;
}

/* ============ CTA 条 ============ */
.cta-bar{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:28px;
  padding:30px 34px;
  background:var(--panel);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  transition:border-color .22s var(--ease),transform .22s var(--ease);
}
.cta-bar:hover{border-color:rgba(255,106,43,.4);transform:translateY(-2px)}
.cta-bar h3{font-size:20px;margin-bottom:8px}
.cta-bar p{color:var(--text-2);font-size:15px}
.cta-actions{display:flex;align-items:center;gap:12px;flex-wrap:wrap}
.cta-count{color:var(--cyan);font-weight:700;font-variant-numeric:tabular-nums}
.cta-more{display:flex;justify-content:center;margin-top:44px}

/* ============ 页脚 ============ */
.site-footer{
  margin-top:88px;
  padding:64px 0 26px;
  background:#0B0D12;
  border-top:1px solid var(--line);
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1fr;
  gap:40px;
}
.footer-brand p{margin-top:16px;color:var(--text-2);font-size:14px;line-height:1.8;max-width:280px}
.footer-col h4{margin-bottom:16px;font-size:15px;color:var(--text);font-weight:700}
.footer-col ul{display:grid;gap:11px}
.footer-col a{color:var(--text-2);font-size:14px}
.footer-col a:hover{color:var(--primary-h)}
.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 var(--line);
  color:var(--text-3);
  font-size:13px;
}
.footer-bottom .tech{font-variant-numeric:tabular-nums}

section[id]{scroll-margin-top:120px}

/* ============ 响应式 ============ */
@media screen and (max-width:1199px){
  .type-grid{grid-template-columns:repeat(2,1fr)}
  .stat-grid{grid-template-columns:repeat(2,1fr)}
}
@media screen and (max-width:1024px){
  .section{padding:56px 0}
  .section-tight{padding:44px 0}
  .nav-search{max-width:280px}
  .type-grid{grid-template-columns:1fr}
  .scene-grid{grid-template-columns:1fr 1fr}
  .steps{grid-template-columns:1fr 1fr}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .site-footer{margin-top:64px}
}
@media screen and (max-width:767px){
  .nav-search{display:none}
  .keep-desktop{display:none}
  .nav-burger{display:inline-flex}
  .channel-scroll{padding:8px 0}
  .page-hero{padding:48px 0 44px;min-height:380px}
  .scene-grid{grid-template-columns:1fr}
  .steps{grid-template-columns:1fr}
  .faq-accordion{grid-template-columns:1fr}
  .stat-grid{grid-template-columns:1fr}
  .cta-bar{flex-direction:column;align-items:flex-start;padding:24px 22px}
  .cta-actions{width:100%}
  .cta-actions .btn{flex:1 1 auto}
}
@media screen and (max-width:520px){
  .grid-container{padding-left:16px;padding-right:16px}
  .section{padding:44px 0}
  .logo-text{font-size:16px}
  .hero-actions .btn{width:100%}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}

/* roulang page: category4 */
:root{
  --bg:#0F1116;
  --panel:#171A22;
  --panel-2:#1E222C;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.16);
  --primary:#FF6A2B;
  --primary-hover:#FF8347;
  --primary-active:#E6551A;
  --teal:#14D2B4;
  --violet:#8B5CF6;
  --text:#F3F5F9;
  --text-2:#A7AFBF;
  --text-3:#6E7787;
  --light-bg:#F6F7F9;
  --light-text:#14161C;
  --r-card:14px;
  --r-btn:10px;
  --r-img:12px;
  --r-pill:999px;
  --shadow-card:0 12px 32px rgba(0,0,0,.45);
  --shadow-btn:0 8px 24px rgba(255,106,43,.35);
  --ease:cubic-bezier(.2,.7,.3,1);
  --dur:.21s;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:system-ui,-apple-system,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border-style:none}
a{color:var(--teal);text-decoration:none;transition:color var(--dur) var(--ease)}
a:hover{color:var(--primary-hover)}
h1,h2,h3,h4{margin:0;color:var(--text);font-weight:700;line-height:1.32;letter-spacing:-.01em}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
button{font:inherit;cursor:pointer}
strong{font-weight:700}
:focus-visible{outline:2px solid var(--teal);outline-offset:2px}
[class]{min-width:0}
section[id],div[id],ul[id]{scroll-margin-top:124px}

.grid-container{
  max-width:1200px;
  margin-left:auto;
  margin-right:auto;
  padding-left:20px;
  padding-right:20px;
}
.section{padding:84px 0}
.section-tight{padding:56px 0}
.section-light{
  background:var(--light-bg);
  color:var(--light-text);
  border-top:1px solid rgba(0,0,0,.06);
  border-bottom:1px solid rgba(0,0,0,.06);
}
.section-light h2,.section-light h3{color:var(--light-text)}
.section-light .sec-head p{color:#4C5464}
.sec-head{max-width:740px;margin-bottom:36px}
.sec-head h2{font-size:clamp(24px,2.6vw,32px)}
.sec-head p{margin-top:12px;color:var(--text-2);font-size:16px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;font-weight:700;letter-spacing:.08em;
  color:var(--teal);text-transform:uppercase;margin-bottom:14px;
}

/* 导航 */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(15,17,22,.82);
  -webkit-backdrop-filter:blur(8px);
  backdrop-filter:blur(8px);
  border-bottom:1px solid var(--line);
}
.nav-row{display:flex;align-items:center;gap:16px;height:70px}
.logo{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto;color:var(--text)}
.logo:hover{color:var(--text)}
.logo-mark{display:inline-flex;flex:0 0 auto}
.logo-text{font-size:17px;font-weight:800;letter-spacing:-.01em;white-space:nowrap}
.nav-search{position:relative;flex:1 1 auto;max-width:400px;margin-left:8px}
.nav-search .s-icon{position:absolute;left:13px;top:50%;transform:translateY(-50%);color:var(--text-3);display:flex;pointer-events:none}
.nav-search input{
  height:44px;width:100%;margin:0;
  background:#12141A;
  border:1px solid var(--line);
  border-radius:var(--r-btn);
  color:var(--text);
  padding:0 14px 0 42px;
  font-size:14px;
  transition:border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.nav-search input::placeholder{color:var(--text-3)}
.nav-search input:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px rgba(255,106,43,.18)}
.nav-actions{display:flex;align-items:center;gap:10px;margin-left:auto}
.icon-btn{
  display:inline-flex;align-items:center;gap:8px;
  min-height:44px;padding:0 14px;
  border-radius:var(--r-btn);
  border:1px solid var(--line);
  background:transparent;
  color:var(--text-2);
  font-size:14px;font-weight:600;
  transition:color var(--dur) var(--ease),border-color var(--dur) var(--ease),background var(--dur) var(--ease);
}
.icon-btn:hover{color:var(--text);border-color:var(--line-strong);background:rgba(255,255,255,.04)}
.icon-btn:active{color:var(--text-2);background:rgba(255,255,255,.02)}
.nav-burger{display:none}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 20px;
  border-radius:var(--r-btn);
  border:1px solid transparent;
  font-size:15px;font-weight:700;
  white-space:nowrap;
  transition:transform var(--dur) var(--ease),background var(--dur) var(--ease),box-shadow var(--dur) var(--ease),border-color var(--dur) var(--ease),color var(--dur) var(--ease);
}
.btn-sm{min-height:40px;padding:0 16px;font-size:14px}
.btn-primary{background:var(--primary);color:#14161C}
.btn-primary:hover{background:var(--primary-hover);color:#14161C;transform:translateY(-2px);box-shadow:var(--shadow-btn)}
.btn-primary:active{background:var(--primary-active);transform:translateY(0);box-shadow:none}
.btn-ghost{background:transparent;color:var(--text);border-color:var(--line-strong)}
.btn-ghost:hover{color:var(--text);border-color:var(--primary);background:rgba(255,106,43,.08);transform:translateY(-2px)}
.btn-ghost:active{transform:translateY(0);background:rgba(255,106,43,.05)}
.btn[disabled],.btn.is-disabled{opacity:.45;cursor:not-allowed;transform:none;box-shadow:none}

.channel-bar{
  position:relative;
  border-bottom:1px solid var(--line);
  background:rgba(15,17,22,.6);
}
.channel-bar::before,.channel-bar::after{
  content:"";position:absolute;top:0;bottom:0;width:26px;z-index:2;pointer-events:none;
}
.channel-bar::before{left:0;background:linear-gradient(90deg,rgba(15,17,22,.95),rgba(15,17,22,0))}
.channel-bar::after{right:0;background:linear-gradient(270deg,rgba(15,17,22,.95),rgba(15,17,22,0))}
.channel-scroll{
  display:flex;gap:8px;align-items:center;
  overflow-x:auto;padding:8px 0;
  scrollbar-width:none;-ms-overflow-style:none;
}
.channel-scroll::-webkit-scrollbar{display:none}
.channel-scroll a{
  flex:0 0 auto;
  padding:8px 16px;
  border:1px solid var(--line);
  border-radius:var(--r-pill);
  font-size:14px;font-weight:600;
  color:var(--text-2);
  white-space:nowrap;
  scroll-margin-top:120px;
  transition:color var(--dur) var(--ease),border-color var(--dur) var(--ease),background var(--dur) var(--ease);
}
.channel-scroll a:hover{color:var(--text);border-color:var(--line-strong);background:rgba(255,255,255,.04)}
.channel-scroll a.is-active{background:var(--primary);border-color:transparent;color:#14161C}
.channel-scroll a.is-active:hover{background:var(--primary-hover);color:#14161C}

/* 移动抽屉 */
.mobile-drawer{position:fixed;inset:0;z-index:90;display:none;background:rgba(9,10,14,.72)}
.mobile-drawer.is-open{display:block}
.drawer-panel{
  position:absolute;top:0;right:0;bottom:0;width:min(340px,86vw);
  background:var(--panel);border-left:1px solid var(--line);
  padding:22px 20px 32px;overflow-y:auto;
}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px}
.drawer-title{font-size:15px;font-weight:800}
.drawer-close{
  width:44px;height:44px;display:inline-flex;align-items:center;justify-content:center;
  border-radius:var(--r-btn);border:1px solid var(--line);background:transparent;color:var(--text-2);
}
.drawer-close:hover{color:var(--text);border-color:var(--line-strong)}
.drawer-search{position:relative;margin-bottom:20px}
.drawer-search input{
  height:44px;width:100%;margin:0;background:#12141A;border:1px solid var(--line);
  border-radius:var(--r-btn);color:var(--text);padding:0 14px;font-size:14px;
}
.drawer-search input::placeholder{color:var(--text-3)}
.drawer-search input:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px rgba(255,106,43,.18)}
.drawer-nav{display:grid;gap:8px;margin-bottom:20px}
.drawer-nav a{
  display:flex;align-items:center;justify-content:space-between;
  min-height:48px;padding:0 16px;border-radius:var(--r-btn);
  border:1px solid var(--line);color:var(--text-2);font-weight:600;font-size:15px;
}
.drawer-nav a:hover{color:var(--text);border-color:var(--line-strong);background:rgba(255,255,255,.04)}
.drawer-nav a.is-active{background:var(--primary);border-color:transparent;color:#14161C}

/* Hero */
.page-hero{position:relative;overflow:hidden;border-bottom:1px solid var(--line)}
.page-hero-bg{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:.5;z-index:0}
.page-hero::after{
  content:"";position:absolute;inset:0;z-index:1;
  background:linear-gradient(180deg,rgba(15,17,22,.70),rgba(15,17,22,.92) 70%,rgba(15,17,22,.99));
}
.hero-inner{position:relative;z-index:2;padding:58px 0 52px;max-width:760px}
.crumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--text-3);margin-bottom:18px;flex-wrap:wrap}
.crumb a{color:var(--text-2)}
.crumb a:hover{color:var(--primary-hover)}
.crumb span[aria-current]{color:var(--text)}
.page-hero h1{font-size:clamp(28px,3.6vw,44px);font-weight:800;letter-spacing:-.01em}
.hero-sub{margin-top:14px;font-size:16px;color:var(--text-2);max-width:620px}
.hero-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:22px}
.pill{
  display:inline-flex;align-items:center;gap:6px;
  padding:6px 14px;border-radius:var(--r-pill);
  border:1px solid var(--line);background:rgba(255,255,255,.03);
  font-size:13px;font-weight:600;color:var(--text-2);
}
.pill-teal{border-color:rgba(20,210,180,.35);color:var(--teal);background:rgba(20,210,180,.08)}
.hero-stats{display:flex;flex-wrap:wrap;gap:28px;margin-top:28px}
.hero-stat b{display:block;font-size:24px;font-weight:800;color:var(--primary);font-variant-numeric:tabular-nums;line-height:1.2}
.hero-stat span{font-size:13px;color:var(--text-3)}

/* 筛选 Tabs */
.filter-tabs{
  display:flex;flex-wrap:wrap;gap:10px;
  margin:0 0 30px;padding:0;border:none;background:transparent;
}
.filter-tabs::before,.filter-tabs::after{display:none}
.filter-tabs .tabs-title{float:none;margin:0}
.filter-tabs .tabs-title>a{
  display:inline-flex;align-items:center;gap:8px;
  padding:9px 18px;margin:0;
  border:1px solid var(--line);border-radius:var(--r-pill);
  background:transparent;color:var(--text-2);
  font-size:14px;font-weight:600;line-height:1.6;
  transition:color var(--dur) var(--ease),border-color var(--dur) var(--ease),background var(--dur) var(--ease);
}
.filter-tabs .tabs-title>a:hover{color:var(--text);border-color:var(--line-strong);background:rgba(255,255,255,.04)}
.filter-tabs .tabs-title.is-active>a{background:var(--primary);border-color:transparent;color:#14161C}
.filter-tabs .tabs-title>a:focus{outline:2px solid var(--teal);outline-offset:2px}
.filter-panes{border:none;background:transparent}
.filter-panes .tabs-panel{padding:0;border:none;background:transparent}
.tabs-count{
  display:inline-flex;align-items:center;justify-content:center;
  min-width:20px;height:20px;padding:0 6px;border-radius:var(--r-pill);
  background:rgba(255,255,255,.08);color:inherit;font-size:12px;font-weight:700;
  font-variant-numeric:tabular-nums;
}
.filter-tabs .tabs-title.is-active .tabs-count{background:rgba(20,22,28,.18)}

/* 时间线 */
.timeline{position:relative}
.timeline::before{
  content:"";position:absolute;left:11px;top:10px;bottom:10px;width:1px;
  background:linear-gradient(180deg,rgba(255,106,43,.45),rgba(20,210,180,.3),rgba(255,255,255,0));
}
.tl-item{
  position:relative;
  display:grid;grid-template-columns:24px 1fr;column-gap:20px;
  padding-bottom:26px;
}
.tl-item:last-child{padding-bottom:0}
.tl-node{
  grid-column:1;justify-self:center;
  width:12px;height:12px;margin-top:28px;border-radius:50%;
  background:var(--bg);border:2px solid var(--primary);
  box-shadow:0 0 0 4px rgba(255,106,43,.11);
}
.tl-card{
  grid-column:2;
  display:grid;grid-template-columns:240px 1fr;gap:22px;
  padding:16px;
  background:var(--panel);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  transition:transform var(--dur) var(--ease),border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.tl-card:hover{transform:translateY(-4px);border-color:rgba(255,106,43,.4);box-shadow:var(--shadow-card)}
.tl-item:nth-child(even) .tl-card{grid-template-columns:1fr 240px}
.tl-item:nth-child(even) .tl-body{order:1}
.tl-item:nth-child(even) .tl-media{order:2}
.tl-media img{width:100%;height:100%;aspect-ratio:16/10;object-fit:cover;border-radius:var(--r-img);background:var(--panel-2)}
.tl-body{display:flex;flex-direction:column;min-width:0}
.tl-meta{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin-bottom:10px}
.tl-meta .sep{width:1px;height:12px;background:var(--line-strong);display:inline-block}
.tl-meta time{font-size:13px;color:var(--text-3);font-variant-numeric:tabular-nums}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 10px;border-radius:var(--r-pill);
  font-size:12px;font-weight:600;
  background:rgba(255,106,43,.12);color:var(--primary-hover);
}
.badge-teal{background:rgba(20,210,180,.12);color:var(--teal)}
.badge-violet{background:rgba(139,92,246,.14);color:#B79BFF}
.tl-body h3{font-size:19px;font-weight:700;line-height:1.45}
.tl-body p{
  margin-top:8px;color:var(--text-2);font-size:15px;line-height:1.75;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.tl-link{
  margin-top:14px;
  display:inline-flex;align-items:center;gap:6px;
  font-size:14px;font-weight:700;color:var(--primary);
  transition:gap var(--dur) var(--ease),color var(--dur) var(--ease);
}
.tl-link:hover{color:var(--primary-hover);gap:10px}

/* 分页 */
.pager{display:flex;align-items:center;justify-content:center;gap:8px;margin-top:36px;flex-wrap:wrap}
.pager a,.pager span{
  display:inline-flex;align-items:center;justify-content:center;
  min-width:44px;height:44px;padding:0 14px;
  border-radius:var(--r-btn);border:1px solid var(--line);
  font-size:14px;font-weight:600;color:var(--text-2);
  font-variant-numeric:tabular-nums;
  transition:color var(--dur) var(--ease),border-color var(--dur) var(--ease),background var(--dur) var(--ease);
}
.pager a:hover{color:var(--text);border-color:var(--line-strong);background:rgba(255,255,255,.04)}
.pager .is-current{background:var(--primary);border-color:transparent;color:#14161C}
.pager .is-disabled{opacity:.45;cursor:not-allowed}

/* 卡片与网格 */
.grid-row{display:grid;gap:20px}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-2{grid-template-columns:repeat(2,1fr)}
.card{
  background:var(--panel);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:22px;
  transition:transform var(--dur) var(--ease),border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.card:hover{transform:translateY(-4px);border-color:rgba(255,106,43,.4);box-shadow:var(--shadow-card)}
.type-icon{
  display:inline-flex;align-items:center;justify-content:center;
  width:46px;height:46px;border-radius:12px;
  background:rgba(255,106,43,.12);color:var(--primary);
  margin-bottom:16px;
}
.type-icon.teal{background:rgba(20,210,180,.12);color:var(--teal)}
.type-icon.violet{background:rgba(139,92,246,.14);color:#B79BFF}
.card h3{font-size:19px}
.card p{margin-top:10px;color:var(--text-2);font-size:15px;line-height:1.75}
.tick-list{margin-top:14px;display:grid;gap:8px}
.tick-list li{position:relative;padding-left:16px;font-size:14px;color:var(--text-2)}
.tick-list li::before{
  content:"";position:absolute;left:0;top:9px;
  width:6px;height:6px;border-radius:50%;background:var(--teal);opacity:.85;
}
.card-link{
  display:inline-flex;align-items:center;gap:6px;margin-top:18px;
  font-size:14px;font-weight:700;color:var(--teal);
  transition:gap var(--dur) var(--ease),color var(--dur) var(--ease);
}
.card-link:hover{gap:10px;color:var(--primary-hover)}

/* 流程（浅色区） */
.step-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.step-card{
  background:#FFFFFF;
  border:1px solid var(--light-line);
  border-radius:var(--r-card);
  padding:22px;
  transition:transform var(--dur) var(--ease),box-shadow var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.step-card:hover{transform:translateY(-4px);box-shadow:0 14px 30px rgba(20,22,28,.10);border-color:rgba(255,106,43,.35)}
.step-no{
  display:inline-flex;align-items:center;justify-content:center;
  width:34px;height:34px;border-radius:10px;
  background:rgba(255,106,43,.12);color:var(--primary-active);
  font-size:14px;font-weight:800;font-variant-numeric:tabular-nums;
}
.step-card h3{margin-top:14px;font-size:19px;color:var(--light-text)}
.step-card p{margin-top:8px;font-size:15px;line-height:1.75;color:#4C5464}

/* 场景列表 */
.scene-list{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
.scene-item{
  display:flex;gap:14px;align-items:flex-start;
  padding:18px 20px;
  background:var(--panel);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  transition:border-color var(--dur) var(--ease),transform var(--dur) var(--ease);
}
.scene-item:hover{border-color:rgba(20,210,180,.4);transform:translateY(-3px)}
.scene-item .scene-ico{flex:0 0 auto;color:var(--teal);margin-top:3px}
.scene-item h3{font-size:16px;font-weight:700}
.scene-item p{margin-top:6px;font-size:14px;color:var(--text-2);line-height:1.7}

/* CTA 条 */
.cta-bar{
  display:flex;align-items:center;justify-content:space-between;gap:20px;flex-wrap:wrap;
  padding:26px 28px;
  background:linear-gradient(135deg,rgba(255,106,43,.10),rgba(20,210,180,.06) 65%,rgba(255,255,255,0));
  border:1px solid var(--line);
  border-radius:var(--r-card);
}
.cta-text{font-size:18px;font-weight:700}
.cta-actions{display:flex;align-items:center;gap:12px;flex-wrap:wrap}
.cta-count{font-size:13px;color:var(--text-3);font-variant-numeric:tabular-nums}
.cta-count b{color:var(--teal);font-weight:700}

/* FAQ */
.faq-col{margin-bottom:14px}
.accordion{border:none;background:transparent;margin:0}
.accordion::before,.accordion::after{display:none}
.accordion-item{
  background:var(--panel);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  overflow:hidden;
  margin-bottom:12px;
  transition:border-color var(--dur) var(--ease);
}
.accordion-item:hover{border-color:var(--line-strong)}
.accordion-item.is-active{border-color:rgba(255,106,43,.4)}
.accordion-title{
  position:relative;
  padding:18px 48px 18px 20px;
  background:transparent;border:none;
  color:var(--text);
  font-size:17px;font-weight:600;line-height:1.5;
  transition:background var(--dur) var(--ease);
}
.accordion-title:hover,.accordion-title:focus{background:rgba(255,255,255,.04);color:var(--text)}
.accordion-title::before{
  content:"＋";position:absolute;right:18px;top:50%;transform:translateY(-50%);
  color:var(--primary);font-size:16px;font-weight:700;line-height:1;
}
.accordion-item.is-active .accordion-title{background:rgba(255,255,255,.03);box-shadow:inset 3px 0 0 var(--primary)}
.accordion-item.is-active .accordion-title::before{content:"－"}
.accordion-content{
  padding:0 20px 20px;
  background:transparent;border:none;
  color:var(--text-2);
  font-size:15px;line-height:1.8;
}
.accordion-content p+.acc-tip{margin-top:10px;color:var(--text-3);font-size:14px}

/* 页脚 */
.site-footer{
  background:#0B0D12;
  border-top:1px solid var(--line);
  padding:64px 0 28px;
  margin-top:0;
}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:36px}
.footer-brand p{margin-top:16px;color:var(--text-3);font-size:14px;max-width:280px;line-height:1.7}
.footer-col h4{font-size:15px;font-weight:700;margin-bottom:16px}
.footer-col ul{display:grid;gap:10px}
.footer-col a{color:var(--text-2);font-size:14px}
.footer-col a:hover{color:var(--primary-hover)}
.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 var(--line);
  color:var(--text-3);font-size:13px;
}
.footer-bottom .tech{color:var(--text-3)}
.toast{
  position:fixed;left:50%;bottom:28px;transform:translate(-50%,16px);
  z-index:120;padding:12px 20px;border-radius:var(--r-btn);
  background:var(--panel-2);border:1px solid var(--line-strong);
  color:var(--text);font-size:14px;font-weight:600;
  box-shadow:0 12px 32px rgba(0,0,0,.5);
  opacity:0;pointer-events:none;
  transition:opacity var(--dur) var(--ease),transform var(--dur) var(--ease);
}
.toast.is-show{opacity:1;transform:translate(-50%,0)}

@media screen and (max-width:1023px){
  .section{padding:56px 0}
  .keep-desktop{display:none !important}
  .nav-search{display:none}
  .nav-burger{display:inline-flex}
  .hero-inner{padding:44px 0 40px}
  .grid-3{grid-template-columns:repeat(2,1fr)}
  .step-grid{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
  .tl-card{grid-template-columns:1fr}
  .tl-item:nth-child(even) .tl-card{grid-template-columns:1fr}
  .tl-item:nth-child(even) .tl-body,
  .tl-item:nth-child(even) .tl-media{order:0}
  .tl-media{order:-1}
}
@media screen and (max-width:640px){
  .grid-container{padding-left:16px;padding-right:16px}
  .section{padding:40px 0}
  .section-tight{padding:36px 0}
  .nav-row{height:62px;gap:10px}
  .logo-text{font-size:15px}
  .grid-3,.grid-2,.step-grid,.scene-list{grid-template-columns:1fr}
  .hero-stats{gap:20px}
  .hero-stat b{font-size:20px}
  .tl-item{grid-template-columns:18px 1fr;column-gap:14px}
  .timeline::before{left:8px}
  .tl-card{padding:14px}
  .cta-bar{padding:20px}
  .cta-text{font-size:16px}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .sec-head{margin-bottom:26px}
}
@media screen and (max-width:400px){
  .logo-text{font-size:14px}
  .pill{font-size:12px;padding:5px 12px}
}