/* roulang page: index */
:root{
  --bg:#120E22; --bg-2:#1A1430; --card:#221A3D; --foot:#0D0A18;
  --line:rgba(255,255,255,.08); --line-2:rgba(255,255,255,.16);
  --brand-a:#6A3DF5; --brand-m:#9B4DFF; --brand-b:#F03E8C;
  --cyan:#21E6C1; --orange:#FFB24B; --danger:#FF5C7A;
  --text:#F2EEFF; --text-2:#A79FC7; --text-3:#7A729A;
  --grad:linear-gradient(135deg,#6A3DF5 0%,#9B4DFF 50%,#F03E8C 100%);
  --r-lg:20px; --r-md:14px; --r-sm:12px; --pill:999px;
  --hard:4px 4px 0 rgba(0,0,0,.55);
  --mono:ui-monospace,"SFMono-Regular",Menlo,Consolas,"Liberation Mono",monospace;
  --sans:"PingFang SC","HarmonyOS Sans","Source Han Sans SC","Noto Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
}
*,*::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:var(--sans);
  font-size:16px;line-height:1.8;letter-spacing:0;overflow-x:hidden;
  background-image:
    linear-gradient(rgba(255,255,255,.022) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.022) 1px,transparent 1px);
  background-size:24px 24px,24px 24px;
}
img{max-width:100%;display:block;border:0}
a{color:var(--text);text-decoration:none;transition:color .14s linear,border-color .14s linear,background-color .14s linear}
a:hover{color:var(--cyan)}
button,input,select{font:inherit;color:inherit}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
h1,h2,h3{letter-spacing:-.01em}
:focus-visible{outline:2px solid var(--cyan);outline-offset:2px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}

/* ---------- 通用组件 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:11px 22px;border-radius:var(--r-md);border:2px solid transparent;
  font-weight:700;font-size:15px;cursor:pointer;line-height:1.2;
  transition:transform .14s linear,box-shadow .14s linear,border-color .14s linear,color .14s linear,background-color .14s linear;
}
.btn-primary{background:var(--grad);color:#fff;border-color:rgba(255,255,255,.14)}
.btn-primary:hover{color:#fff;transform:translateY(-2px);box-shadow:var(--hard)}
.btn-ghost{background:transparent;color:var(--text);border:2px solid var(--text-2)}
.btn-ghost:hover{color:var(--cyan);border-color:var(--cyan)}
.btn-sm{min-height:36px;padding:7px 16px;font-size:14px;border-radius:10px}
.btn-text{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:700;border-bottom:2px dashed var(--text-3);padding-bottom:2px;color:var(--cyan)}
.btn-text:hover{border-bottom-color:var(--cyan)}
.badge{
  display:inline-flex;align-items:center;gap:6px;height:30px;padding:0 14px;border-radius:var(--pill);
  background:rgba(33,230,193,.12);border:1px solid var(--cyan);color:var(--cyan);
  font-family:var(--mono);font-size:12px;letter-spacing:.05em;white-space:nowrap;
}
.badge-pink{background:rgba(240,62,140,.12);border-color:var(--brand-b);color:#FF8DC0}
.badge-orange{background:rgba(255,178,75,.12);border-color:var(--orange);color:var(--orange)}
.badge-soft{background:rgba(255,255,255,.05);border-color:var(--line-2);color:var(--text-2)}
.chip{
  display:inline-flex;align-items:center;height:28px;padding:0 14px;border-radius:var(--pill);
  border:1px solid var(--line-2);font-size:12.5px;color:var(--text-2);white-space:nowrap;
  transition:all .14s linear;
}
.chip:hover,.chip.is-on{border-color:var(--cyan);color:var(--cyan);background:rgba(33,230,193,.1)}
.corner{position:absolute;width:10px;height:10px;background:var(--cyan);z-index:2}
.corner.tl{top:-2px;left:-2px}.corner.tr{top:-2px;right:-2px}
.corner.bl{bottom:-2px;left:-2px}.corner.br{bottom:-2px;right:-2px}
.frame{position:relative;border:2px solid var(--line-2);border-radius:var(--r-md);overflow:hidden;background:var(--bg-2)}
.frame img{width:100%;height:100%;object-fit:cover}

/* ---------- 头部导航 ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:80;height:64px;
  background:rgba(18,14,34,.94);border-bottom:1px solid transparent;
  transition:border-color .16s linear,background-color .16s linear;
}
.site-header.is-scrolled{border-bottom-color:var(--line);background:rgba(18,14,34,.97)}
.header-inner{display:flex;align-items:center;gap:28px;height:64px}
.logo{display:flex;align-items:center;gap:9px;flex:0 0 auto}
.logo-mark{display:grid;grid-template-columns:8px 8px;grid-template-rows:8px 8px;width:16px;height:16px;gap:0}
.logo-mark i{display:block}
.logo-mark i:nth-child(1){background:var(--brand-a)}
.logo-mark i:nth-child(2){background:var(--cyan)}
.logo-mark i:nth-child(3){background:var(--brand-b)}
.logo-mark i:nth-child(4){background:rgba(155,77,255,.4)}
.logo-text{font-size:19px;font-weight:800;letter-spacing:-.01em;line-height:1}
.nav{flex:1 1 auto}
.nav-list{display:flex;align-items:center;gap:4px}
.nav-item{position:relative}
.nav-link{
  display:inline-flex;align-items:center;gap:6px;height:64px;padding:0 14px;
  font-size:15px;font-weight:600;color:var(--text-2);position:relative;
}
.nav-link::after{
  content:"";position:absolute;left:14px;right:14px;bottom:14px;height:2px;border-radius:2px;
  background:var(--grad);transform:scaleX(0);transform-origin:left;transition:transform .14s linear;
}
.nav-link:hover{color:var(--text)}
.nav-link:hover::after,.nav-link.is-active::after{transform:scaleX(1)}
.nav-link.is-active{color:var(--text)}
.caret{width:0;height:0;border-left:4px solid transparent;border-right:4px solid transparent;border-top:5px solid currentColor;opacity:.7}
.drop-panel{
  position:absolute;top:62px;left:0;width:300px;padding:10px;border-radius:var(--r-lg);
  background:var(--bg-2);border:2px solid var(--line-2);box-shadow:var(--hard);
  opacity:0;visibility:hidden;transform:translateY(4px);
  transition:opacity .13s linear,transform .13s linear,visibility .13s linear;
}
.has-drop:hover .drop-panel,.has-drop:focus-within .drop-panel{opacity:1;visibility:visible;transform:translateY(0)}
.drop-title{font-family:var(--mono);font-size:12px;color:var(--cyan);letter-spacing:.05em;padding:8px 10px 6px}
.drop-link{display:block;padding:8px 10px;border-radius:10px;font-size:14px;color:var(--text-2)}
.drop-link:hover{background:rgba(255,255,255,.05);color:var(--text)}
.drop-news{display:flex;gap:10px;align-items:center;padding:8px 10px;border-radius:10px}
.drop-news:hover{background:rgba(255,255,255,.05)}
.drop-cover{width:56px;height:36px;border-radius:8px;border:1px solid var(--line-2);object-fit:cover;flex:0 0 auto}
.drop-news p{font-size:13px;color:var(--text-2);line-height:1.45;max-height:38px;overflow:hidden}
.header-actions{display:flex;align-items:center;gap:12px;flex:0 0 auto}
.hamburger{display:none;width:42px;height:38px;border:2px solid var(--line-2);border-radius:10px;background:transparent;cursor:pointer;position:relative}
.hamburger span{position:absolute;left:10px;right:10px;height:2px;background:var(--text)}
.hamburger span:nth-child(1){top:12px}.hamburger span:nth-child(2){top:18px}.hamburger span:nth-child(3){top:24px}
.mobile-drawer{
  position:fixed;top:64px;left:0;right:0;bottom:0;z-index:79;background:var(--bg-2);
  border-top:1px solid var(--line);padding:18px 24px 100px;overflow-y:auto;
  transform:translateY(-8px);opacity:0;visibility:hidden;transition:all .14s linear;
}
.mobile-drawer.is-open{transform:translateY(0);opacity:1;visibility:visible}
.drawer-link{display:block;padding:14px 4px;font-size:16px;font-weight:700;border-bottom:1px solid var(--line)}
.drawer-sub{padding:6px 4px 12px;display:flex;flex-wrap:wrap;gap:8px}
.drawer-cta{position:fixed;left:24px;right:24px;bottom:20px;z-index:81}

/* ---------- 板块 ---------- */
.sec{padding:84px 0;position:relative}
.sec-alt{background:var(--bg-2);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:40px;flex-wrap:wrap}
.sec-title{font-size:30px;font-weight:700;line-height:1.35}
.sec-title::after{content:"";display:block;width:48px;height:2px;border-radius:2px;background:var(--grad);margin-top:12px}
.sec-sub{margin-top:14px;color:var(--text-2);font-size:15px;max-width:660px;line-height:1.8}
.sec-lead{color:var(--text-2);font-size:15px;max-width:760px;line-height:1.85;margin-top:-18px;margin-bottom:36px}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-family:var(--mono);font-size:12px;letter-spacing:.08em;color:var(--cyan);text-transform:uppercase}
.eyebrow::before{content:"";width:8px;height:8px;background:var(--grad);display:block}

/* ---------- Hero ---------- */
.hero{padding:132px 0 76px;position:relative;overflow:hidden}
.hero::before{
  content:"";position:absolute;right:-160px;bottom:-220px;width:620px;height:620px;border-radius:50%;
  background:radial-gradient(circle at 50% 50%,rgba(240,62,140,.28),rgba(106,61,245,.14) 45%,transparent 70%);
  pointer-events:none;
}
.hero::after{
  content:"";position:absolute;left:-120px;top:40px;width:420px;height:420px;border-radius:50%;
  background:radial-gradient(circle at 50% 50%,rgba(33,230,193,.1),transparent 68%);pointer-events:none;
}
.hero-grid{display:grid;grid-template-columns:55fr 45fr;gap:48px;align-items:center;position:relative;z-index:1}
.hero-title{font-size:clamp(30px,4vw,46px);font-weight:800;line-height:1.25;margin:18px 0 0}
.grad-text{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero-lede{margin-top:22px;color:var(--text-2);font-size:16px;line-height:1.85;max-width:560px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}
.hero-badges{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px}
.hero-visual{position:relative}
.hero-visual .frame{aspect-ratio:16/9}
.hero-visual .frame img{aspect-ratio:16/9}

/* ---------- 搜索入口 ---------- */
.searchbar{
  display:flex;gap:12px;align-items:center;padding:20px;border-radius:var(--r-lg);
  background:var(--card);border:2px solid var(--line-2);box-shadow:var(--hard);
}
.search-field{flex:1 1 auto;display:flex;align-items:center;gap:10px;height:46px;padding:0 16px;border-radius:var(--r-sm);background:var(--bg-2);border:1px solid var(--line-2)}
.search-field input{flex:1;background:transparent;border:0;outline:none;font-size:15px}
.search-field input::placeholder{color:var(--text-3)}
.search-field:focus-within{border-color:var(--cyan);box-shadow:0 0 0 1px var(--cyan)}
.search-icon{width:12px;height:12px;border:2px solid var(--text-3);border-radius:50%;position:relative;flex:0 0 auto}
.search-icon::after{content:"";position:absolute;right:-5px;bottom:-4px;width:6px;height:2px;background:var(--text-3);transform:rotate(45deg)}
.chips{display:flex;flex-wrap:wrap;gap:8px;margin-top:18px}

/* ---------- 数据指标条 ---------- */
.stat-strip{
  display:grid;grid-template-columns:repeat(5,1fr);gap:0;border:2px solid var(--line-2);
  border-radius:var(--r-lg);background:var(--card);overflow:hidden;
}
.stat-cell{padding:26px 20px;text-align:center;border-right:1px solid var(--line)}
.stat-cell:last-child{border-right:0}
.stat-num{font-family:var(--mono);font-size:24px;font-weight:700;color:var(--cyan);letter-spacing:.02em}
.stat-num small{font-size:13px;color:var(--text-3);margin-left:2px}
.stat-label{font-size:12.5px;color:var(--text-3);margin-top:8px}

/* ---------- 功能分组 ---------- */
.fg-grid{display:grid;grid-template-columns:1.35fr 1.35fr .9fr;gap:22px;align-items:start}
.fg-card{
  position:relative;background:var(--card);border:2px solid var(--line-2);border-radius:var(--r-lg);
  padding:28px;transition:transform .14s linear,box-shadow .14s linear;
}
.fg-card::before{content:"";position:absolute;left:0;right:0;top:0;height:2px;border-radius:2px 2px 0 0;background:var(--grad)}
.fg-card:hover{transform:translate(-2px,-2px);box-shadow:var(--hard)}
.fg-icon{width:24px;height:24px;display:grid;grid-template-columns:11px 11px;grid-template-rows:11px 11px;gap:2px;margin-bottom:16px}
.fg-icon i{background:var(--brand-m)}
.fg-icon i:nth-child(2){background:var(--cyan)}
.fg-icon i:nth-child(3){background:var(--brand-b)}
.fg-card h3{font-size:21px;font-weight:600;line-height:1.5}
.fg-list{margin:16px 0 18px;display:grid;gap:10px}
.fg-list li{position:relative;padding-left:18px;color:var(--text-2);font-size:14.5px;line-height:1.7}
.fg-list li::before{content:"";position:absolute;left:0;top:9px;width:8px;height:8px;background:rgba(33,230,193,.7)}
.link-text{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:700;color:var(--cyan);border-bottom:2px dashed rgba(33,230,193,.5);padding-bottom:2px}
.link-text:hover{color:#7ff5dd;border-bottom-color:#7ff5dd}

/* ---------- 能力矩阵 ---------- */
.matrix{border:2px solid var(--line-2);border-radius:var(--r-lg);overflow:hidden;background:var(--card)}
.matrix-row{display:grid;grid-template-columns:180px 1fr auto;gap:20px;align-items:center;padding:18px 24px;border-bottom:1px solid var(--line);transition:background-color .14s linear}
.matrix-row:nth-child(odd){background:rgba(255,255,255,.022)}
.matrix-row:last-child{border-bottom:0}
.matrix-row:hover{background:rgba(255,255,255,.05)}
.matrix-name{font-weight:700;font-size:15.5px}
.matrix-desc{color:var(--text-2);font-size:14px;line-height:1.7}

/* ---------- 使用场景 ---------- */
.scene-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.scene-card{
  background:var(--card);border:2px solid var(--line-2);border-radius:var(--r-lg);padding:22px;
  display:grid;grid-template-columns:140px 1fr;gap:18px;align-items:start;
  transition:transform .14s linear,box-shadow .14s linear;
}
.scene-card:hover{transform:translate(-2px,-2px);box-shadow:var(--hard)}
.scene-card:nth-child(2){margin-top:26px}
.scene-card:nth-child(3){margin-top:-26px}
.scene-media{aspect-ratio:4/3;border-radius:var(--r-sm);overflow:hidden;border:2px solid var(--line-2)}
.scene-media img{width:100%;height:100%;object-fit:cover}
.scene-card h3{font-size:18px;font-weight:600;line-height:1.55}
.scene-card p{color:var(--text-2);font-size:14px;margin-top:8px;line-height:1.75}
.scene-tag{margin-top:12px;display:inline-flex}

/* ---------- 截图演示 ---------- */
.demo-grid{display:grid;grid-template-columns:1.6fr 1fr;gap:22px;align-items:start}
.demo-main .frame{aspect-ratio:16/9}
.demo-side{display:grid;gap:22px}
.demo-side .frame{aspect-ratio:16/10}
.demo-caption{font-size:12px;color:var(--text-3);margin-top:10px;line-height:1.6}
.demo-tabs{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px}

/* ---------- 成功案例 ---------- */
.case-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;align-items:start}
.case-card{
  position:relative;background:var(--card);border:2px solid var(--line-2);border-radius:var(--r-lg);padding:28px;
}
.case-card::before{content:"";position:absolute;left:0;right:0;top:0;height:2px;background:var(--grad)}
.case-card h3{font-size:19px;font-weight:600}
.case-card p{color:var(--text-2);font-size:14.5px;margin-top:12px;line-height:1.8}
.case-meta{display:flex;flex-wrap:wrap;gap:10px;margin-top:18px}

/* ---------- 套餐 ---------- */
.price-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;align-items:start}
.price-card{
  background:var(--card);border:2px solid var(--line-2);border-radius:var(--r-lg);padding:28px;
  display:flex;flex-direction:column;
}
.price-card.featured{border-color:var(--cyan);transform:translateY(-12px);box-shadow:var(--hard)}
.price-name{font-size:19px;font-weight:700}
.price-amount{font-family:var(--mono);font-size:30px;font-weight:700;color:var(--orange);margin:14px 0 4px;letter-spacing:.01em}
.price-amount small{font-size:13px;color:var(--text-3);font-family:var(--sans);margin-left:6px}
.price-list{margin:20px 0 24px;display:grid;gap:11px}
.price-list li{position:relative;padding-left:20px;font-size:14.5px;color:var(--text-2);line-height:1.7}
.price-list li::before{content:"";position:absolute;left:0;top:8px;width:9px;height:9px;background:var(--cyan);border-radius:2px}
.price-card .btn{width:100%;margin-top:auto}

/* ---------- 评价墙 ---------- */
.review-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;align-items:start}
.review-card{
  background:var(--card);border:2px solid var(--line-2);border-radius:var(--r-lg);padding:24px;
  transition:transform .14s linear;
}
.review-card:hover{transform:translateY(-2px)}
.review-head{display:flex;align-items:center;gap:12px}
.avatar{width:38px;height:38px;border-radius:10px;border:2px solid var(--line-2);background:linear-gradient(135deg,#6A3DF5,#F03E8C);flex:0 0 auto}
.review-name{font-size:14.5px;font-weight:700}
.stars{font-family:var(--mono);font-size:12px;color:var(--orange);letter-spacing:.1em;margin-top:3px}
.review-text{margin-top:16px;color:var(--text-2);font-size:14.5px;line-height:1.8}
.review-src{margin-top:16px}

/* ---------- 口碑统计 ---------- */
.rep-grid{display:grid;grid-template-columns:1.5fr 1fr;gap:40px;align-items:center}
.bar-list{display:grid;gap:22px}
.bar-item{display:grid;gap:9px}
.bar-top{display:flex;justify-content:space-between;font-size:14px;color:var(--text-2)}
.bar-top b{font-family:var(--mono);color:var(--cyan);font-weight:700}
.bar-track{height:10px;border-radius:var(--pill);background:rgba(255,255,255,.07);overflow:hidden}
.bar-fill{height:100%;border-radius:var(--pill);background:linear-gradient(90deg,#21E6C1,#9B4DFF 55%,#F03E8C)}
.rep-note{color:var(--text-2);font-size:15px;line-height:1.85}

/* ---------- 资讯列表 ---------- */
.news-list{border-top:1px solid var(--line)}
.news-item{display:grid;grid-template-columns:160px 1fr auto;gap:22px;align-items:center;padding:20px 0;border-bottom:1px solid var(--line);position:relative;transition:background-color .14s linear}
.news-item::before{content:"";position:absolute;left:0;top:0;bottom:0;width:2px;background:var(--cyan);transform:scaleY(0);transition:transform .14s linear}
.news-item:hover{background:rgba(255,255,255,.04)}
.news-item:hover::before{transform:scaleY(1)}
.news-thumb{aspect-ratio:16/10;border-radius:var(--r-sm);overflow:hidden;border:2px solid var(--line-2)}
.news-thumb img{width:100%;height:100%;object-fit:cover}
.news-body h3{font-size:17px;font-weight:600;line-height:1.55;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-body p{margin-top:8px;color:var(--text-2);font-size:14px;line-height:1.7;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-more{margin-top:26px}

/* ---------- 专题 ---------- */
.topic-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;align-items:start}
.topic-card{background:var(--card);border:2px solid var(--line-2);border-radius:var(--r-md);padding:22px;transition:transform .14s linear,box-shadow .14s linear}
.topic-card:hover{transform:translate(-2px,-2px);box-shadow:var(--hard)}
.topic-card h3{font-size:16.5px;font-weight:600;line-height:1.55}
.topic-card p{color:var(--text-2);font-size:13.5px;margin-top:10px;line-height:1.7}
.topic-card .badge{margin-top:14px}

/* ---------- 资源目录 ---------- */
.dir-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.dir-card{
  display:flex;align-items:center;gap:14px;padding:18px;border-radius:var(--r-md);
  background:var(--card);border:2px solid var(--line-2);transition:all .14s linear;
}
.dir-card:hover{border-color:var(--cyan);transform:translate(-2px,-2px);box-shadow:var(--hard);color:var(--text)}
.dir-icon{width:20px;height:20px;background:var(--grad);border-radius:4px;flex:0 0 auto}
.dir-name{font-size:14.5px;font-weight:700}
.dir-card .badge{margin-left:auto;height:24px;padding:0 10px;font-size:11px}

/* ---------- 更新日志 ---------- */
.timeline{position:relative;padding-left:26px}
.timeline::before{content:"";position:absolute;left:6px;top:6px;bottom:6px;width:2px;background:var(--line-2)}
.tl-item{position:relative;padding:0 0 26px}
.tl-item:last-child{padding-bottom:0}
.tl-dot{position:absolute;left:-26px;top:8px;width:14px;height:14px;border:2px solid var(--cyan);background:var(--bg);border-radius:3px}
.tl-body{display:flex;flex-wrap:wrap;align-items:center;gap:14px}
.tl-body p{color:var(--text-2);font-size:14.5px;line-height:1.75;flex:1 1 320px}
.tl-date{font-family:var(--mono);font-size:12px;color:var(--text-3)}

/* ---------- 提示条 ---------- */
.note-strip{
  display:flex;gap:16px;align-items:flex-start;padding:22px 24px;border-radius:var(--r-lg);
  border:2px dashed rgba(255,178,75,.5);background:rgba(255,178,75,.06);
}
.note-strip strong{color:var(--orange);font-size:15px;flex:0 0 auto}
.note-strip p{color:var(--text-2);font-size:14px;line-height:1.75}

/* ---------- FAQ ---------- */
.faq{max-width:800px;margin:0 auto;border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item summary{
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  min-height:56px;padding:14px 4px;font-size:16px;font-weight:600;cursor:pointer;list-style:none;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
  content:"+";font-family:var(--mono);font-size:20px;color:var(--cyan);line-height:1;flex:0 0 auto;
  transition:transform .14s linear;
}
.faq-item[open] summary::after{content:"×";transform:rotate(0)}
.faq-item[open] summary{color:var(--cyan)}
.faq-answer{padding:0 4px 20px;margin-left:0;border-left:2px solid var(--cyan);padding-left:18px;color:var(--text-2);font-size:14.5px;line-height:1.85}

/* ---------- CTA ---------- */
.cta-band{position:relative;overflow:hidden;border:2px solid var(--line-2);border-radius:var(--r-lg);background:var(--card)}
.cta-band::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:42%;background:var(--grad);opacity:.9;
  clip-path:polygon(0 0,100% 0,72% 100%,0 100%);
}
.cta-band::after{
  content:"";position:absolute;left:0;top:0;right:0;bottom:0;
  background-image:linear-gradient(rgba(255,255,255,.04) 1px,transparent 1px);background-size:100% 12px;pointer-events:none;opacity:.4;
}
.cta-inner{position:relative;z-index:2;display:flex;align-items:center;justify-content:space-between;gap:32px;padding:44px 40px;flex-wrap:wrap}
.cta-inner h2{font-size:26px;font-weight:700;line-height:1.4;max-width:560px}
.cta-inner p{margin-top:12px;color:rgba(242,238,255,.82);font-size:15px;max-width:520px}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--foot);border-top:2px solid transparent;border-image:var(--grad) 1;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.4fr;gap:36px;padding:64px 0 44px}
.footer-brand p{color:var(--text-3);font-size:14px;margin-top:16px;line-height:1.8;max-width:300px}
.footer-title{font-size:13px;font-family:var(--mono);color:var(--cyan);letter-spacing:.06em;margin-bottom:16px}
.footer-col a{display:block;color:var(--text-2);font-size:14px;padding:6px 0}
.footer-col a:hover{color:var(--cyan)}
.footer-form{display:flex;gap:10px;margin-top:16px;flex-wrap:wrap}
.footer-form input{
  flex:1 1 160px;height:44px;padding:0 14px;border-radius:var(--r-sm);
  background:var(--bg-2);border:1px solid var(--line-2);outline:none;
}
.footer-form input:focus{border-color:var(--cyan);box-shadow:0 0 0 1px var(--cyan)}
.footer-form input.is-error{border-color:var(--danger)}
.form-hint{font-size:12px;color:var(--text-3);margin-top:10px}
.footer-bottom{border-top:1px solid var(--line);padding:22px 0;display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;color:var(--text-3);font-size:13px}
.footer-bottom a{color:var(--text-3)}
.footer-bottom a:hover{color:var(--cyan)}

/* ---------- 状态 ---------- */
.is-loading{background-image:linear-gradient(rgba(255,255,255,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.05) 1px,transparent 1px);background-size:8px 8px;animation:pix .96s steps(2,end) infinite;border-radius:var(--r-sm);min-height:64px}
@keyframes pix{0%,100%{opacity:.55}50%{opacity:.95}}
.is-empty{text-align:center;padding:44px 20px;border:2px dashed var(--line-2);border-radius:var(--r-lg);color:var(--text-3);font-size:13px}
.is-empty::before{content:"";display:block;width:24px;height:24px;margin:0 auto 14px;background:var(--grad);border-radius:4px}
.is-error{border:2px solid var(--danger);border-radius:var(--r-lg);padding:20px 22px;color:#FFC2CF;font-size:14px;background:rgba(255,92,122,.08)}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .fg-grid{grid-template-columns:1fr 1fr}
  .fg-card.narrow{grid-column:span 2}
  .dir-grid,.topic-grid{grid-template-columns:repeat(3,1fr)}
}
@media (max-width:1023px){
  .nav,.header-actions .btn{display:none}
  .hamburger{display:block}
  .hero{padding:112px 0 60px}
  .hero-grid{grid-template-columns:1fr;gap:36px}
  .hero-visual{order:-1}
  .sec{padding:64px 0}
  .stat-strip{grid-template-columns:repeat(2,1fr)}
  .stat-cell:nth-child(2n){border-right:0}
  .stat-cell{border-bottom:1px solid var(--line)}
  .scene-grid{grid-template-columns:1fr}
  .scene-card:nth-child(2),.scene-card:nth-child(3){margin-top:0}
  .fg-grid{grid-template-columns:1fr}
  .fg-card.narrow{grid-column:span 1}
  .case-grid,.price-grid,.review-grid{grid-template-columns:repeat(2,1fr)}
  .demo-grid{grid-template-columns:1fr}
  .demo-side{grid-template-columns:1fr 1fr}
  .rep-grid{grid-template-columns:1fr;gap:28px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
}
@media (max-width:767px){
  .sec{padding:52px 0}
  .sec-title{font-size:24px}
  .hero-title{font-size:30px}
  .hero-lede{font-size:15px}
  .searchbar{flex-direction:column;align-items:stretch}
  .matrix-row{grid-template-columns:1fr;gap:8px;align-items:start}
  .case-grid,.price-grid,.review-grid,.topic-grid,.dir-grid,.demo-side{grid-template-columns:1fr}
  .price-card.featured{transform:none}
  .news-item{grid-template-columns:110px 1fr;gap:16px}
  .news-item .badge{grid-column:2}
  .cta-band::before{width:100%;clip-path:polygon(0 0,100% 0,100% 46%,0 62%)}
  .cta-inner{padding:32px 22px}
  .footer-grid{grid-template-columns:1fr}
  .stat-num{font-size:20px}
}
@media (max-width:519px){
  .container{padding:0 18px}
  .hero{padding:100px 0 48px}
  .btn{width:100%}
  .hero-actions,.cta-actions,.footer-form .btn{flex-direction:column}
  .btn-text{width:auto}
  .stat-strip{grid-template-columns:1fr}
  .stat-cell{border-right:0}
  .badge{height:26px;font-size:11.5px}
}

/* roulang page: category1 */
:root{
  --bg:#120E22; --bg-2:#1A1430; --card:#221A3D; --foot:#0D0A18;
  --line:rgba(255,255,255,.08); --line-2:rgba(255,255,255,.16);
  --brand-a:#6A3DF5; --brand-m:#9B4DFF; --brand-b:#F03E8C;
  --cyan:#21E6C1; --orange:#FFB24B; --danger:#FF5C7A;
  --text:#F2EEFF; --text-2:#A79FC7; --text-3:#7A729A;
  --grad:linear-gradient(135deg,#6A3DF5 0%,#9B4DFF 50%,#F03E8C 100%);
  --r-lg:20px; --r-md:14px; --r-sm:12px; --pill:999px;
  --hard:4px 4px 0 rgba(0,0,0,.55);
  --mono:ui-monospace,"SFMono-Regular",Menlo,Consolas,"Liberation Mono",monospace;
  --sans:"PingFang SC","HarmonyOS Sans","Source Han Sans SC","Noto Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
}
*,*::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:var(--sans);
  font-size:16px;line-height:1.8;overflow-x:hidden;
  background-image:
    linear-gradient(rgba(255,255,255,.022) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.022) 1px,transparent 1px);
  background-size:24px 24px,24px 24px;
}
img{max-width:100%;display:block;border:0}
a{color:var(--text);text-decoration:none;transition:color .14s linear,border-color .14s linear,background-color .14s linear}
a:hover{color:var(--cyan)}
button,input,select{font:inherit;color:inherit}
ul{margin:0;padding:0;list-style:none}
p{margin:0 0 .9em}
h1,h2,h3{margin:0;letter-spacing:-.01em}
h1{font-size:42px;font-weight:800;line-height:1.3}
h2{font-size:30px;font-weight:700;line-height:1.35}
h3{font-size:21px;font-weight:600;line-height:1.4}
:focus-visible{outline:2px solid var(--cyan);outline-offset:2px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:11px 22px;border-radius:var(--r-md);border:2px solid transparent;
  font-weight:700;font-size:15px;line-height:1.2;cursor:pointer;background:transparent;
  transition:transform .14s linear,box-shadow .14s linear,border-color .14s linear,color .14s linear,background-color .14s linear;
}
.btn-primary{background:var(--grad);color:#fff;border-color:rgba(255,255,255,.14)}
.btn-primary:hover{color:#fff;transform:translateY(-2px);box-shadow:var(--hard)}
.btn-ghost{color:var(--text);border:2px solid var(--text-2)}
.btn-ghost:hover{color:var(--cyan);border-color:var(--cyan)}
.btn-sm{min-height:38px;padding:8px 16px;font-size:14px;border-radius:10px}
.btn-text{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:700;color:var(--cyan);border-bottom:2px dashed var(--text-3);padding-bottom:2px}
.btn-text:hover{border-bottom-color:var(--cyan)}
.btn[disabled]{opacity:.45;cursor:not-allowed;transform:none;box-shadow:none}
/* ---------- 徽章 / 标签 ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;height:30px;padding:0 14px;border-radius:var(--pill);
  background:rgba(33,230,193,.12);border:1px solid var(--cyan);color:var(--cyan);
  font-family:var(--mono);font-size:12px;letter-spacing:.05em;white-space:nowrap;
}
.badge-pink{background:rgba(240,62,140,.12);border-color:var(--brand-b);color:#FF8DC0}
.badge-orange{background:rgba(255,178,75,.12);border-color:var(--orange);color:var(--orange)}
.badge-soft{background:rgba(255,255,255,.05);border-color:var(--line-2);color:var(--text-2)}
.badge-big{height:38px;padding:0 18px;font-size:14px}
.chip{
  display:inline-flex;align-items:center;height:30px;padding:0 15px;border-radius:var(--pill);
  border:1px solid var(--line-2);background:transparent;font-size:13px;color:var(--text-2);
  white-space:nowrap;cursor:pointer;transition:all .14s linear;
}
.chip:hover,.chip.is-on{border-color:var(--cyan);color:var(--cyan);background:rgba(33,230,193,.1)}
/* ---------- 头部导航 ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:80;height:64px;
  background:rgba(18,14,34,.94);border-bottom:1px solid transparent;
  transition:border-color .16s linear,background-color .16s linear;
}
.site-header.is-scrolled{border-bottom-color:var(--line);background:rgba(18,14,34,.97)}
.header-inner{display:flex;align-items:center;gap:26px;height:64px}
.logo{display:flex;align-items:center;gap:9px;flex:0 0 auto}
.logo-mark{display:grid;grid-template-columns:8px 8px;grid-template-rows:8px 8px;width:16px;height:16px}
.logo-mark i{display:block}
.logo-mark i:nth-child(1){background:var(--brand-a)}
.logo-mark i:nth-child(2){background:var(--cyan)}
.logo-mark i:nth-child(3){background:var(--brand-b)}
.logo-mark i:nth-child(4){background:rgba(155,77,255,.4)}
.logo-text{font-size:19px;font-weight:800;line-height:1}
.nav{flex:1 1 auto}
.nav-list{display:flex;align-items:center;gap:2px}
.nav-item{position:relative}
.nav-link{
  display:inline-flex;align-items:center;gap:6px;height:64px;padding:0 14px;
  font-size:15px;font-weight:600;color:var(--text-2);position:relative;white-space:nowrap;
}
.nav-link::after{
  content:"";position:absolute;left:14px;right:14px;bottom:14px;height:2px;border-radius:2px;
  background:var(--grad);transform:scaleX(0);transform-origin:left;transition:transform .14s linear;
}
.nav-link:hover{color:var(--text)}
.nav-link:hover::after,.nav-link.is-active::after{transform:scaleX(1)}
.nav-link.is-active{color:var(--text)}
.caret{width:7px;height:7px;border-right:2px solid currentColor;border-bottom:2px solid currentColor;transform:rotate(45deg) translateY(-2px);opacity:.7}
.drop-panel{
  position:absolute;top:60px;left:0;width:300px;padding:6px 10px 14px;
  background:var(--bg-2);border:2px solid var(--line-2);border-radius:var(--r-lg);
  box-shadow:0 18px 40px rgba(0,0,0,.5);z-index:70;
  opacity:0;visibility:hidden;transform:translateY(-4px);
  transition:opacity .12s linear,transform .12s linear,visibility .12s linear;
}
.nav-item.has-drop:hover .drop-panel,.nav-item.has-drop:focus-within .drop-panel{opacity:1;visibility:visible;transform:translateY(0)}
.drop-title{font-family:var(--mono);font-size:12px;color:var(--cyan);letter-spacing:.05em;padding:10px 8px 6px;margin:0}
.drop-link{display:block;padding:8px;border-radius:10px;font-size:14px;color:var(--text-2)}
.drop-link:hover{background:rgba(255,255,255,.04);color:var(--cyan)}
.drop-news{display:flex;gap:10px;align-items:center;padding:8px;border-radius:10px;font-size:13px;color:var(--text-2);line-height:1.4}
.drop-news:hover{background:rgba(255,255,255,.04);color:var(--cyan)}
.drop-news p{margin:0}
.drop-cover{width:52px;height:34px;object-fit:cover;border-radius:6px;border:2px solid var(--line);flex:0 0 auto}
.header-actions{display:flex;align-items:center;gap:12px;flex:0 0 auto}
.hamburger{display:none;width:42px;height:38px;border:2px solid var(--line-2);border-radius:10px;background:transparent;cursor:pointer;position:relative}
.hamburger span{position:absolute;left:10px;right:10px;height:2px;background:var(--text);transition:background-color .14s linear}
.hamburger span:nth-child(1){top:12px}
.hamburger span:nth-child(2){top:18px}
.hamburger span:nth-child(3){top:24px}
.mobile-drawer{
  position:fixed;top:64px;left:0;right:0;bottom:0;z-index:79;background:var(--bg-2);
  border-top:1px solid var(--line);padding:18px 24px 110px;overflow-y:auto;
  transform:translateY(-8px);opacity:0;visibility:hidden;transition:all .14s linear;
}
.mobile-drawer.is-open{transform:translateY(0);opacity:1;visibility:visible}
.drawer-link{display:block;padding:14px 4px;font-size:16px;font-weight:700;border-bottom:1px solid var(--line)}
.drawer-sub{padding:8px 4px 14px;display:flex;flex-wrap:wrap;gap:8px}
.drawer-cta{position:fixed;left:24px;right:24px;bottom:20px;z-index:81}
/* ---------- 通用板块 ---------- */
.sec{padding:72px 0}
.sec-alt{background:var(--bg-2);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.sec-head{margin-bottom:34px;max-width:760px}
.sec-head .sec-lead{margin-top:14px;color:var(--text-2);font-size:15px;line-height:1.85}
.sec-title{font-size:30px;font-weight:700;line-height:1.35}
.sec-title::after{content:"";display:block;width:48px;height:2px;border-radius:2px;background:var(--grad);margin-top:12px}
.kw{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
/* ---------- C1 分类页头 ---------- */
.cat-head{padding:104px 0 30px}
.crumb{font-family:var(--mono);font-size:12.5px;color:var(--text-3);letter-spacing:.03em;margin-bottom:14px}
.crumb a{color:var(--text-3)}
.crumb a:hover{color:var(--cyan)}
.crumb span.sep{margin:0 8px;opacity:.6}
.cat-head-bar{
  display:grid;grid-template-columns:minmax(0,1fr) auto;gap:26px;align-items:center;
  padding:24px 28px;border:2px solid var(--line-2);border-radius:var(--r-lg);background:var(--card);
  background-image:radial-gradient(520px 180px at 100% 0,rgba(240,62,140,.16),transparent 70%);
}
.cat-head-bar h1{font-size:34px}
.cat-head-note{margin:10px 0 0;color:var(--text-2);font-size:14px;max-width:640px}
.cat-head-stats{display:flex;flex-wrap:wrap;gap:10px}
/* ---------- C2 筛选条 ---------- */
.filter-bar{position:sticky;top:64px;z-index:60;background:rgba(18,14,34,.96);border-bottom:1px solid var(--line);padding:12px 0}
.filter-inner{display:flex;align-items:center;gap:18px;justify-content:space-between}
.chips{display:flex;gap:8px;overflow-x:auto;scrollbar-width:none;-ms-overflow-style:none}
.chips::-webkit-scrollbar{display:none}
.sort-wrap{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.sort-label{font-size:12.5px;color:var(--text-3);font-family:var(--mono)}
.sort-select{height:36px;padding:0 12px;border-radius:10px;background:var(--bg-2);border:1px solid var(--line-2);color:var(--text-2);font-size:13.5px;cursor:pointer}
.sort-select:hover{border-color:var(--cyan);color:var(--cyan)}
/* ---------- C3 列表主体 ---------- */
.cat-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px;align-items:start}
.cat-card{
  position:relative;border:2px solid var(--line);border-radius:var(--r-lg);background:var(--card);
  overflow:hidden;transition:transform .14s linear,box-shadow .14s linear,border-color .14s linear;
}
.cat-card::before{content:"";position:absolute;top:0;left:0;right:0;height:2px;background:var(--grad);opacity:.9}
.cat-card:hover{transform:translate(-2px,-2px);box-shadow:var(--hard);border-color:var(--line-2)}
.cat-thumb{position:relative;aspect-ratio:16/10;overflow:hidden;background:var(--bg-2);border-bottom:2px solid var(--line)}
.cat-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .16s linear}
.cat-card:hover .cat-thumb img{transform:scale(1.03)}
.flag{position:absolute;top:10px;right:10px;height:24px;padding:0 10px;border-radius:var(--pill);font-family:var(--mono);font-size:11px;display:inline-flex;align-items:center;letter-spacing:.05em}
.flag-new{background:rgba(240,62,140,.9);color:#fff}
.flag-upd{background:rgba(33,230,193,.9);color:#0B241F}
.cat-body{padding:20px 22px 22px}
.cat-body h3{font-size:18px;line-height:1.45;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.cat-body p{margin:10px 0 16px;color:var(--text-2);font-size:14px;line-height:1.75;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.cat-meta{display:flex;flex-wrap:wrap;gap:8px;align-items:center}
.list-more{display:flex;justify-content:center;margin-top:38px}
/* ---------- C4 精选 ---------- */
.pick-list{display:grid;gap:20px}
.pick-card{
  display:grid;grid-template-columns:220px minmax(0,1fr);gap:22px;align-items:center;
  padding:20px;border:2px solid var(--line);border-radius:var(--r-lg);background:var(--card);
  transition:transform .14s linear,box-shadow .14s linear,border-color .14s linear;
}
.pick-card:hover{transform:translate(-2px,-2px);box-shadow:var(--hard);border-color:var(--line-2)}
.pick-thumb{aspect-ratio:16/10;border-radius:var(--r-md);overflow:hidden;border:2px solid var(--line);background:var(--bg-2)}
.pick-thumb img{width:100%;height:100%;object-fit:cover}
.pick-body h3{font-size:19px}
.pick-body p{margin:10px 0 14px;color:var(--text-2);font-size:14px}
/* ---------- C5 子分类矩阵 ---------- */
.subgrid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}
.sub-item{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding:16px 18px;border:2px solid var(--line-2);border-radius:var(--r-sm);
  font-weight:700;font-size:15px;background:transparent;
  transition:border-color .14s linear,color .14s linear,background-color .14s linear;
}
.sub-item:hover{border-color:var(--cyan);color:var(--cyan);background:rgba(33,230,193,.06)}
.sub-item span.cnt{font-family:var(--mono);font-size:12px;color:var(--text-3)}
/* ---------- C6 场景 ---------- */
.scene-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:22px;align-items:start}
.scene-card{padding:24px 26px;border:2px solid var(--line);border-radius:var(--r-lg);background:var(--card)}
.scene-card:nth-child(2){margin-top:26px}
.scene-card:nth-child(4){margin-top:26px}
.scene-card h3{font-size:18px}
.scene-card p{margin:12px 0 16px;color:var(--text-2);font-size:14px;line-height:1.8}
.scene-tags{display:flex;gap:8px;flex-wrap:wrap}
/* ---------- C7 FAQ ---------- */
.faq-wrap{max-width:820px;margin:0 auto}
.faq-item{border:2px solid var(--line);border-radius:var(--r-md);background:var(--card);margin-bottom:12px;overflow:hidden}
.faq-item[open]{border-color:var(--line-2)}
.faq-item summary{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:0 20px;min-height:56px;cursor:pointer;font-weight:700;font-size:16px;list-style:none;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{content:"+";font-family:var(--mono);font-size:20px;color:var(--cyan);line-height:1}
.faq-item[open] summary::after{content:"×"}
.faq-item summary:hover{color:var(--cyan)}
.faq-body{padding:4px 20px 18px;border-left:2px solid var(--cyan);margin-left:20px;color:var(--text-2);font-size:14.5px}
/* ---------- C8 相关文章 ---------- */
.news-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px 24px}
.news-row{
  display:flex;gap:14px;align-items:center;padding:12px;border-radius:var(--r-md);
  border:1px solid var(--line);background:transparent;transition:background-color .14s linear,border-color .14s linear;
}
.news-row:hover{background:rgba(255,255,255,.04);border-color:var(--line-2)}
.news-row img{width:110px;aspect-ratio:16/10;object-fit:cover;border-radius:10px;border:2px solid var(--line);flex:0 0 auto}
.news-row h3{font-size:15px;line-height:1.5}
.news-row p{margin:6px 0 0;font-size:12.5px;color:var(--text-3);font-family:var(--mono)}
/* ---------- C9 订阅 ---------- */
.subscribe-bar{
  display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap;
  padding:26px 30px;border:2px solid var(--line-2);border-radius:var(--r-lg);background:var(--bg-2);
  background-image:radial-gradient(420px 160px at 0 0,rgba(106,61,245,.22),transparent 70%);
}
.subscribe-bar h2{font-size:22px}
.subscribe-bar p{margin:8px 0 0;color:var(--text-2);font-size:14px}
.sub-form{display:flex;gap:10px;flex-wrap:wrap}
.sub-form input{
  height:44px;min-width:240px;padding:0 14px;border-radius:var(--r-sm);
  background:#151029;border:1px solid var(--line-2);color:var(--text);font-size:14px;
}
.sub-form input::placeholder{color:var(--text-3)}
.sub-form input:focus{border-color:var(--cyan);outline:2px solid var(--cyan);outline-offset:0}
.sub-form input.is-error{border-color:var(--danger)}
.form-hint{margin:10px 0 0;font-size:12px;color:var(--text-3)}
.back-home{margin-top:16px;display:inline-flex;font-size:13.5px;color:var(--text-2);border-bottom:2px dashed var(--text-3);padding-bottom:2px}
.back-home:hover{color:var(--cyan);border-color:var(--cyan)}
/* ---------- 状态样式 ---------- */
.skeleton{background:var(--bg-2);border-radius:var(--r-md);border:1px solid var(--line);animation:pulse .12s linear infinite alternate;height:14px}
.skeleton.block{height:120px}
@keyframes pulse{from{opacity:.55}to{opacity:.85}}
.state-empty,.state-error{
  padding:44px 24px;text-align:center;border:2px dashed var(--line-2);border-radius:var(--r-lg);
  display:flex;flex-direction:column;align-items:center;gap:12px;
}
.state-empty .pix{width:32px;height:32px;display:grid;grid-template-columns:16px 16px;grid-template-rows:16px 16px}
.state-empty .pix i:nth-child(1){background:var(--brand-a)}
.state-empty .pix i:nth-child(2){background:var(--brand-b)}
.state-empty .pix i:nth-child(3){background:var(--cyan)}
.state-empty .pix i:nth-child(4){background:rgba(155,77,255,.35)}
.state-empty p,.state-error p{margin:0;font-size:13px;color:var(--text-3)}
.state-error{border-color:var(--danger);border-style:solid}
/* ---------- 页脚 ---------- */
.site-footer{margin-top:0;background:var(--foot);border-top:2px solid transparent;border-image:var(--grad) 1;padding:60px 0 26px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:38px}
.footer-brand p{margin:16px 0 0;color:var(--text-3);font-size:14px;line-height:1.8;max-width:320px}
.footer-title{font-family:var(--mono);font-size:12px;color:var(--cyan);letter-spacing:.06em;margin:0 0 14px}
.footer-col a{display:block;padding:6px 0;font-size:14px;color:var(--text-2)}
.footer-col a:hover{color:var(--cyan)}
.footer-form{display:flex;gap:8px;margin-top:12px}
.footer-form input{flex:1 1 auto;min-width:0;height:38px;padding:0 12px;border-radius:10px;background:#151029;border:1px solid var(--line-2);font-size:13.5px}
.footer-form input:focus{border-color:var(--cyan);outline:none}
.footer-bottom{
  margin-top:40px;padding-top:20px;border-top:1px solid var(--line);
  display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;
  font-size:13px;color:var(--text-3);font-family:var(--mono);
}
.footer-bottom a{color:var(--text-3)}
.footer-bottom a:hover{color:var(--cyan)}
/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .cat-grid{grid-template-columns:repeat(3,minmax(0,1fr))}
}
@media (max-width:1040px){
  .nav{display:none}
  .hamburger{display:block}
  .header-actions .btn-primary{display:none}
  .container{padding:0 20px}
  .cat-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .cat-head-bar{grid-template-columns:1fr;gap:18px}
  .cat-head-bar h1{font-size:30px}
  .subgrid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
}
@media (max-width:768px){
  h1{font-size:30px}
  .sec{padding:52px 0}
  .sec-title{font-size:24px}
  .cat-head{padding:96px 0 22px}
  .cat-grid{grid-template-columns:1fr;gap:18px}
  .cat-body{padding:18px 18px 20px}
  .pick-card{grid-template-columns:1fr;gap:16px;padding:18px}
  .scene-grid{grid-template-columns:1fr}
  .scene-card:nth-child(2),.scene-card:nth-child(4){margin-top:0}
  .news-grid{grid-template-columns:1fr}
  .filter-inner{flex-direction:column;align-items:stretch;gap:12px}
  .sort-wrap{justify-content:space-between}
  .subscribe-bar{padding:22px 20px}
  .sub-form input{min-width:100%}
  .footer-grid{grid-template-columns:1fr;gap:24px}
  .footer-form{flex-wrap:wrap}
}
@media (max-width:520px){
  .container{padding:0 16px}
  .cat-head-bar{padding:20px 18px}
  .cat-head-bar h1{font-size:26px}
  .btn{width:100%}
  .list-more .btn{width:auto}
  .subgrid{grid-template-columns:1fr}
  .news-row img{width:88px}
  .state-empty,.state-error{padding:32px 18px}
}