/* roulang page: index */
:root{
  --bg:#080B12;
  --bg-elevated:#0F1520;
  --surface:#121A27;
  --surface-2:#172233;
  --border:#263449;
  --border-strong:#354A66;
  --text:#E8EEF7;
  --text-muted:#9AA8BC;
  --text-dim:#6F7F95;
  --primary:#2DF5C2;
  --primary-ink:#04110D;
  --secondary:#8B6CFF;
  --accent:#FF7A4D;
  --star:#FFD166;
  --success:#35D07F;
  --danger:#FF5C7A;
  --focus:#2DF5C2;
  --nav-bg:rgba(8,11,18,.92);
  --radius-card:16px;
  --radius-btn:12px;
  --radius-input:10px;
  --shadow:0 10px 30px rgba(0,0,0,.28);
  --shadow-hover:0 16px 44px rgba(0,0,0,.4);
  --glow-primary:0 0 0 1px rgba(45,245,194,.5),0 10px 30px rgba(45,245,194,.14);
}
*,*::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:"HarmonyOS Sans SC","PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
h1,h2,h3,h4,p,ul,ol,dl,dd,figure{margin:0}
ul,ol{padding:0;list-style:none}
a{color:inherit;text-decoration:none;transition:color .18s ease}
img{display:block;max-width:100%}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
:focus-visible{outline:2px solid var(--focus);outline-offset:2px;border-radius:4px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}

/* ============ 顶栏 ============ */
.site-header{
  position:sticky;top:0;z-index:60;
  background:var(--nav-bg);
  -webkit-backdrop-filter:blur(14px);
  backdrop-filter:blur(14px);
  border-bottom:1px solid var(--border);
  transition:box-shadow .25s ease;
}
.site-header::after{
  content:"";position:absolute;left:0;right:0;bottom:-1px;height:1px;
  background:linear-gradient(90deg,transparent,rgba(45,245,194,.6),rgba(139,108,255,.5),transparent);
}
.site-header.is-scrolled{box-shadow:0 12px 32px rgba(0,0,0,.45)}
.header-inner{display:flex;align-items:center;gap:24px;height:70px}
.logo{display:flex;align-items:center;gap:10px;font-weight:800;font-size:19px;white-space:nowrap;letter-spacing:.2px}
.logo-mark{
  width:34px;height:34px;border-radius:11px;display:grid;place-items:center;
  background:linear-gradient(135deg,rgba(45,245,194,.2),rgba(139,108,255,.26));
  border:1px solid rgba(45,245,194,.42);
  box-shadow:0 0 18px rgba(45,245,194,.18);
}
.logo-mark svg{width:18px;height:18px}
.logo:hover .logo-text{color:var(--primary)}
.main-nav{display:flex;align-items:center;gap:4px;margin-left:6px}
.nav-link{
  position:relative;display:inline-block;padding:8px 14px;border-radius:10px;
  font-size:15px;color:var(--text-muted);transition:color .2s,background .2s;
}
.nav-link:hover{color:var(--primary);background:rgba(45,245,194,.06)}
.nav-link.active{color:var(--primary);background:rgba(45,245,194,.08)}
.nav-link.active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:1px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--primary),var(--secondary));
  box-shadow:0 0 10px rgba(45,245,194,.6);
}
.header-actions{margin-left:auto;display:flex;align-items:center;gap:12px}
.menu-toggle{
  display:none;width:42px;height:42px;border-radius:10px;
  border:1px solid var(--border);background:var(--surface);place-items:center;
}
.menu-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:var(--text);margin:3px auto;transition:background .2s}
.menu-toggle:hover{border-color:rgba(45,245,194,.55)}
.menu-toggle:hover span{background:var(--primary)}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:50px;padding:0 26px;border-radius:var(--radius-btn);
  font-weight:700;font-size:15px;letter-spacing:.2px;white-space:nowrap;
  border:1px solid transparent;cursor:pointer;
  transition:transform .18s ease,box-shadow .2s ease,background .2s ease,border-color .2s ease,color .2s ease,filter .2s ease;
}
.btn-primary{background:var(--accent);color:#1B0A02;box-shadow:0 8px 24px rgba(255,122,77,.22)}
.btn-primary:hover{transform:translateY(-1px);filter:brightness(1.07);box-shadow:0 14px 34px rgba(255,122,77,.38)}
.btn-primary:active{transform:translateY(0);filter:brightness(.95);box-shadow:0 6px 16px rgba(255,122,77,.26)}
.btn-ghost{background:rgba(45,245,194,.04);border-color:rgba(45,245,194,.5);color:var(--primary)}
.btn-ghost:hover{background:rgba(45,245,194,.1);transform:translateY(-1px);box-shadow:var(--glow-primary)}
.btn-ghost:active{transform:translateY(0);background:rgba(45,245,194,.16)}
.btn-sm{height:40px;padding:0 18px;font-size:14px;border-radius:10px}
.btn-block{width:100%}
.btn:disabled,.btn.is-disabled{opacity:.45;cursor:not-allowed;transform:none;box-shadow:none}
.text-link{color:var(--primary);font-size:15px;font-weight:600;text-decoration:underline;text-underline-offset:4px;text-decoration-thickness:1px}
.text-link:hover{color:#7BFFDD}

/* ============ 首屏 ============ */
.hero{position:relative;overflow:hidden;padding:76px 0 92px;border-bottom:1px solid var(--border)}
.hero-bg{position:absolute;inset:0;background:url('/assets/images/backpic/back-1.png') center/cover no-repeat;opacity:.14}
.hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:radial-gradient(rgba(45,245,194,.08) 1px,transparent 1px);
  background-size:24px 24px;
  -webkit-mask-image:linear-gradient(115deg,rgba(0,0,0,.9),rgba(0,0,0,.15) 60%,transparent);
  mask-image:linear-gradient(115deg,rgba(0,0,0,.9),rgba(0,0,0,.15) 60%,transparent);
}
.hero .glow{position:absolute;border-radius:50%;filter:blur(80px);pointer-events:none}
.hero .glow-a{width:420px;height:420px;top:-120px;right:-60px;background:rgba(45,245,194,.16)}
.hero .glow-b{width:360px;height:360px;bottom:-160px;left:-80px;background:rgba(139,108,255,.18)}
.hero-inner{position:relative;z-index:2;display:grid;grid-template-columns:7fr 5fr;gap:48px;align-items:center}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:999px;font-size:13px;font-weight:600;
  color:var(--primary);background:rgba(45,245,194,.08);border:1px solid rgba(45,245,194,.32);
}
.eyebrow .dot{width:7px;height:7px;border-radius:50%;background:var(--primary);box-shadow:0 0 10px var(--primary)}
.hero h1{margin-top:20px;font-size:52px;line-height:1.15;font-weight:800;letter-spacing:.4px}
.hero h1 em{font-style:normal;background:linear-gradient(96deg,var(--primary),#8B6CFF);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero-sub{margin-top:18px;font-size:17px;color:var(--text-muted);max-width:520px}
.hero-actions{margin-top:30px;display:flex;flex-wrap:wrap;gap:14px}
.hero-badges{margin-top:30px;display:flex;flex-wrap:wrap;gap:12px}
.hero-badges li{
  display:flex;flex-direction:column;gap:2px;
  padding:10px 16px;border-radius:12px;
  background:rgba(18,26,39,.78);border:1px solid var(--border);
  min-width:118px;
}
.badge-label{font-size:11px;letter-spacing:.6px;color:var(--text-dim)}
.badge-value{font-size:14px;font-weight:700;color:var(--text)}
.hero-visual{position:relative}
.visual-card{
  position:relative;z-index:2;border-radius:24px;overflow:hidden;
  border:1px solid var(--border-strong);background:var(--surface);
  box-shadow:0 26px 60px rgba(0,0,0,.55);
}
.visual-card img{width:100%;aspect-ratio:4/3;object-fit:cover}
.visual-card::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(8,11,18,0) 45%,rgba(8,11,18,.72));
}
.float-chip{
  position:absolute;z-index:3;display:inline-flex;align-items:center;gap:8px;
  padding:9px 14px;border-radius:999px;font-size:13px;font-weight:600;
  background:rgba(15,21,32,.94);border:1px solid rgba(45,245,194,.4);
  color:var(--text);box-shadow:0 10px 26px rgba(0,0,0,.45);
}
.float-chip .dot{width:7px;height:7px;border-radius:50%;background:var(--primary);box-shadow:0 0 8px var(--primary)}
.chip-a{top:18px;left:-18px}
.chip-b{bottom:26px;right:-14px;border-color:rgba(139,108,255,.45)}
.chip-b .dot{background:var(--secondary);box-shadow:0 0 8px var(--secondary)}

/* ============ 通用板块 ============ */
.section{padding:88px 0}
.section-tight{padding:64px 0}
.section-line{border-top:1px solid var(--border)}
.section-head{display:flex;justify-content:space-between;align-items:flex-end;gap:24px;margin-bottom:36px}
.section-kicker{display:inline-block;font-size:13px;font-weight:700;letter-spacing:1.2px;color:var(--primary);margin-bottom:10px}
.section-head h2{font-size:34px;line-height:1.25;font-weight:700}
.section-head p{margin-top:10px;color:var(--text-muted);font-size:15px;max-width:620px}
.section-head .head-action{flex-shrink:0;padding-bottom:6px}

/* ============ 功能拼贴 ============ */
.feature-grid{display:grid;grid-template-columns:1.32fr 1fr;gap:22px}
.feature-stack{display:grid;gap:22px}
.feature-card{
  position:relative;background:var(--surface);border:1px solid var(--border);
  border-radius:var(--radius-card);padding:28px;overflow:hidden;
  transition:transform .24s ease,border-color .24s ease,box-shadow .24s ease;
}
.feature-card:hover{transform:translateY(-2px);border-color:rgba(45,245,194,.55);box-shadow:var(--shadow-hover)}
.feature-lg{
  display:flex;flex-direction:column;justify-content:space-between;
  padding:34px;background:linear-gradient(158deg,var(--surface-2),var(--surface) 62%);
}
.feature-lg::before{
  content:"";position:absolute;right:-70px;top:-70px;width:240px;height:240px;border-radius:50%;
  background:radial-gradient(circle,rgba(45,245,194,.22),transparent 68%);
}
.feature-icon{
  width:46px;height:46px;border-radius:13px;display:grid;place-items:center;
  background:rgba(45,245,194,.1);border:1px solid rgba(45,245,194,.34);color:var(--primary);
  margin-bottom:18px;
}
.feature-icon svg{width:22px;height:22px}
.feature-card h3{font-size:20px;font-weight:700;line-height:1.4}
.feature-card p{margin-top:10px;font-size:14.5px;color:var(--text-muted);line-height:1.72}
.feature-lg h3{font-size:26px}
.feature-lg p{font-size:15.5px;max-width:420px}
.feature-metrics{display:flex;gap:28px;margin-top:26px;flex-wrap:wrap}
.feature-metrics div span{display:block;font-size:12px;color:var(--text-dim)}
.feature-metrics div strong{font-size:26px;font-weight:800;color:var(--primary);line-height:1.2}
.mini-link{
  display:inline-flex;align-items:center;gap:6px;margin-top:16px;
  font-size:13.5px;font-weight:600;color:var(--primary);
}
.mini-link svg{width:14px;height:14px;transition:transform .2s}
.mini-link:hover svg{transform:translateX(3px)}

/* ============ 截图轮播 ============ */
.shot-wrap{position:relative}
.shot-track{
  display:flex;gap:20px;overflow-x:auto;scroll-snap-type:x mandatory;
  padding:4px 4px 20px;scrollbar-width:none;
}
.shot-track::-webkit-scrollbar{display:none}
.shot-card{
  flex:0 0 clamp(280px,31%,350px);scroll-snap-align:start;
  background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-card);
  overflow:hidden;transition:transform .24s ease,border-color .24s ease,box-shadow .24s ease;
}
.shot-card:hover{transform:translateY(-2px);border-color:rgba(45,245,194,.5);box-shadow:var(--shadow-hover)}
.shot-img{aspect-ratio:16/10;overflow:hidden;background:var(--surface-2)}
.shot-img img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease}
.shot-card:hover .shot-img img{transform:scale(1.04)}
.shot-body{padding:16px 18px 20px}
.shot-body h3{font-size:17px;font-weight:700}
.shot-body p{margin-top:6px;font-size:14px;color:var(--text-muted);line-height:1.65}
.shot-nav{display:flex;justify-content:space-between;align-items:center;margin-top:8px;gap:16px}
.shot-dots{display:flex;gap:8px;align-items:center}
.shot-dots i{display:block;width:8px;height:8px;border-radius:999px;background:var(--border-strong);transition:width .25s,background .25s}
.shot-dots i.on{width:26px;background:var(--primary);box-shadow:0 0 10px rgba(45,245,194,.55)}
.shot-arrows{display:flex;gap:10px}
.arrow-btn{
  width:44px;height:44px;border-radius:50%;display:grid;place-items:center;
  border:1px solid var(--border);background:var(--surface);color:var(--text-muted);
  transition:border-color .2s,color .2s,background .2s,transform .2s;
}
.arrow-btn:hover{border-color:rgba(45,245,194,.6);color:var(--primary);background:rgba(45,245,194,.08);transform:translateY(-1px)}
.arrow-btn:active{transform:translateY(0)}
.arrow-btn svg{width:18px;height:18px}

/* ============ 系统要求 ============ */
.req-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.req-card{
  background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-card);
  padding:26px;transition:border-color .24s,transform .24s,box-shadow .24s;
}
.req-card:hover{border-color:rgba(45,245,194,.45);transform:translateY(-2px);box-shadow:var(--shadow-hover)}
.req-head{display:flex;align-items:center;gap:12px;margin-bottom:20px}
.req-head .ico{
  width:40px;height:40px;border-radius:12px;display:grid;place-items:center;
  background:rgba(139,108,255,.12);border:1px solid rgba(139,108,255,.35);color:#B7A5FF;
}
.req-head .ico svg{width:20px;height:20px}
.req-head h3{font-size:18px;font-weight:700}
.req-list{display:grid;gap:14px}
.req-list > div{display:grid;gap:3px;padding-bottom:14px;border-bottom:1px dashed var(--border)}
.req-list > div:last-child{border-bottom:0;padding-bottom:0}
.req-list dt{font-size:12px;color:var(--text-dim);letter-spacing:.4px}
.req-list dd{font-size:14.5px;color:var(--text);margin:0}
.req-foot{margin-top:26px}

/* ============ 评价墙 ============ */
.review-wall{columns:2;column-gap:22px}
.review-card{
  break-inside:avoid;margin-bottom:22px;padding:22px;
  background:var(--surface);border:1px solid var(--border);border-left:2px solid rgba(45,245,194,.65);
  border-radius:14px;transition:border-color .24s,transform .24s,box-shadow .24s;
}
.review-card:hover{border-color:rgba(45,245,194,.5);border-left-color:var(--primary);transform:translateY(-2px);box-shadow:var(--shadow-hover)}
.stars{display:flex;gap:3px;color:var(--star);font-size:13px;letter-spacing:2px}
.review-card p{margin-top:12px;font-size:14.5px;color:var(--text-muted);line-height:1.78}
.review-meta{margin-top:16px;display:flex;align-items:center;gap:10px;font-size:13px;color:var(--text-dim)}
.review-meta .avatar{
  width:30px;height:30px;border-radius:50%;display:grid;place-items:center;font-size:12px;font-weight:700;
  background:linear-gradient(135deg,rgba(45,245,194,.2),rgba(139,108,255,.28));
  border:1px solid rgba(45,245,194,.35);color:var(--text);
}
.tag{
  display:inline-flex;align-items:center;padding:3px 10px;border-radius:999px;
  font-size:12px;font-weight:600;color:var(--primary);
  background:rgba(45,245,194,.08);border:1px solid rgba(45,245,194,.34);
}
.tag.violet{color:#B7A5FF;background:rgba(139,108,255,.1);border-color:rgba(139,108,255,.36)}

/* ============ 下载条带 ============ */
.download-band{
  position:relative;overflow:hidden;
  background:var(--surface-2);border:1px solid var(--border);border-radius:24px;
  padding:36px;display:grid;grid-template-columns:1fr 150px;gap:32px;align-items:center;
}
.download-band::before{
  content:"";position:absolute;right:-80px;bottom:-120px;width:320px;height:320px;border-radius:50%;
  background:radial-gradient(circle,rgba(255,122,77,.18),transparent 68%);
}
.download-info{position:relative;z-index:2}
.download-info h2{font-size:28px;line-height:1.3}
.download-info .meta-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:16px}
.meta-pill{
  display:inline-flex;align-items:center;gap:7px;padding:6px 13px;border-radius:999px;
  font-size:13px;color:var(--text-muted);background:rgba(8,11,18,.55);border:1px solid var(--border);
}
.meta-pill strong{color:var(--text);font-weight:700}
.platform-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:20px}
.plat-btn{
  display:inline-flex;align-items:center;gap:8px;height:44px;padding:0 18px;border-radius:11px;
  background:rgba(18,26,39,.9);border:1px solid var(--border);color:var(--text);
  font-size:14px;font-weight:600;transition:border-color .2s,background .2s,color .2s,transform .2s;
}
.plat-btn svg{width:16px;height:16px;color:var(--text-muted);transition:color .2s}
.plat-btn:hover{border-color:rgba(45,245,194,.6);color:var(--primary);background:rgba(45,245,194,.08);transform:translateY(-1px)}
.plat-btn:hover svg{color:var(--primary)}
.qr-box{position:relative;z-index:2;display:grid;gap:8px;justify-items:center}
.qr{
  width:120px;height:120px;border-radius:14px;background:#F4F8FF;color:#0B1220;
  display:grid;place-items:center;text-align:center;font-size:11px;font-weight:700;line-height:1.5;
  padding:12px;box-shadow:0 10px 26px rgba(0,0,0,.35);
  background-image:
    repeating-linear-gradient(90deg,rgba(11,18,32,.14) 0 3px,transparent 3px 9px),
    repeating-linear-gradient(0deg,rgba(11,18,32,.14) 0 3px,transparent 3px 9px);
}
.qr span{display:block;background:#F4F8FF;padding:2px 4px;border-radius:3px}
.qr-box small{font-size:12px;color:var(--text-dim)}

/* ============ 最新信息 ============ */
.chips{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:24px}
.chip{
  padding:7px 16px;border-radius:999px;font-size:13.5px;font-weight:600;
  color:var(--text-muted);background:var(--surface);border:1px solid var(--border);
  transition:color .2s,border-color .2s,background .2s;
}
.chip:hover{color:var(--primary);border-color:rgba(45,245,194,.45)}
.chip.active{color:var(--primary-ink);background:var(--primary);border-color:var(--primary);box-shadow:0 6px 18px rgba(45,245,194,.25)}
.cms-news-list{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
.news-card{
  display:grid;grid-template-columns:118px 1fr;gap:16px;
  background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-card);
  padding:16px;transition:transform .24s,border-color .24s,box-shadow .24s;
}
.news-card:hover{transform:translateY(-2px);border-color:rgba(45,245,194,.5);box-shadow:var(--shadow-hover)}
.news-thumb{width:118px;height:94px;border-radius:10px;overflow:hidden;background:var(--surface-2)}
.news-thumb img{width:100%;height:100%;object-fit:cover}
.news-body{min-width:0}
.news-body h3{
  margin-top:8px;font-size:17px;font-weight:700;line-height:1.45;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-body p{
  margin-top:6px;font-size:14px;color:var(--text-muted);line-height:1.6;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-meta{margin-top:10px;display:flex;align-items:center;justify-content:space-between;gap:10px;font-size:12px;color:var(--text-dim)}
.news-meta .read-more{color:var(--primary);font-weight:600}
.empty-state{
  grid-column:1/-1;display:grid;justify-items:center;gap:10px;text-align:center;
  border:1px dashed var(--border-strong);border-radius:var(--radius-card);
  padding:46px 24px;background:rgba(23,34,51,.5);color:var(--text-muted);
}
.empty-state svg{width:34px;height:34px;color:var(--text-dim)}
.empty-state strong{font-size:16px;color:var(--text)}
.empty-state .empty-actions{margin-top:6px;display:flex;gap:12px;flex-wrap:wrap;justify-content:center}

/* ============ FAQ ============ */
.faq{max-width:900px;margin:0 auto;border-top:1px solid var(--border)}
.faq-item{border-bottom:1px solid var(--border)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:22px 16px;font-size:18px;font-weight:600;text-align:left;line-height:1.5;
  transition:background .22s,color .22s,border-color .22s;border-left:2px solid transparent;
}
.faq-q:hover{color:var(--primary);background:rgba(18,26,39,.6)}
.faq-icon{position:relative;flex:0 0 20px;width:20px;height:20px}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;top:9px;left:0;width:20px;height:2px;border-radius:2px;
  background:var(--primary);transition:transform .25s ease,opacity .25s ease;
}
.faq-icon::after{transform:rotate(90deg)}
.faq-item.active .faq-q{color:var(--primary);background:var(--surface);border-left-color:var(--primary)}
.faq-item.active .faq-icon::after{transform:rotate(0);opacity:0}
.faq-a{max-height:0;overflow:hidden;transition:max-height .32s ease}
.faq-item.active .faq-a{max-height:420px}
.faq-a p{padding:0 18px 24px;font-size:15px;line-height:1.78;color:var(--text-muted)}

/* ============ 反馈表单 ============ */
.feedback-wrap{
  display:grid;grid-template-columns:0.85fr 1.15fr;gap:36px;align-items:start;
  background:var(--surface);border:1px solid var(--border);border-radius:24px;padding:36px;
}
.feedback-aside h2{font-size:28px;line-height:1.35}
.feedback-aside p{margin-top:14px;font-size:15px;color:var(--text-muted)}
.feedback-list{margin-top:22px;display:grid;gap:12px}
.feedback-list li{display:flex;gap:10px;font-size:14px;color:var(--text-muted);line-height:1.7}
.feedback-list li .tick{flex:0 0 18px;width:18px;height:18px;border-radius:50%;display:grid;place-items:center;background:rgba(45,245,194,.14);color:var(--primary);font-size:11px;margin-top:3px}
.form-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}
.field{display:flex;flex-direction:column;gap:8px}
.field.full{grid-column:1/-1}
.field label{font-size:13.5px;color:var(--text-muted);font-weight:600}
.field input,.field select,.field textarea{
  width:100%;height:48px;padding:0 14px;border-radius:var(--radius-input);
  background:var(--bg-elevated);border:1px solid var(--border);color:var(--text);
  font-size:15px;font-family:inherit;transition:border-color .2s,box-shadow .2s,background .2s;
}
.field textarea{height:auto;min-height:120px;padding:12px 14px;line-height:1.7;resize:vertical}
.field select{appearance:none;background-image:linear-gradient(45deg,transparent 50%,var(--text-muted) 50%),linear-gradient(135deg,var(--text-muted) 50%,transparent 50%);background-position:calc(100% - 20px) 21px,calc(100% - 15px) 21px;background-size:5px 5px,5px 5px;background-repeat:no-repeat}
.field input::placeholder,.field textarea::placeholder{color:var(--text-dim)}
.field input:hover,.field select:hover,.field textarea:hover{border-color:var(--border-strong)}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--primary);background:var(--surface-2);
  box-shadow:0 0 0 3px rgba(45,245,194,.14);
}
.field input.is-invalid,.field textarea.is-invalid{border-color:var(--danger);box-shadow:0 0 0 3px rgba(255,92,122,.14)}
.form-foot{grid-column:1/-1;display:flex;flex-wrap:wrap;align-items:center;gap:16px;margin-top:4px}
.form-foot .btn{min-width:180px}
.form-msg{font-size:14px;line-height:1.6;display:none;padding:10px 14px;border-radius:10px;width:100%}
.form-msg.is-error{display:block;color:var(--danger);background:rgba(255,92,122,.1);border:1px solid rgba(255,92,122,.4)}
.form-msg.is-success{display:block;color:var(--success);background:rgba(53,208,127,.1);border:1px solid rgba(53,208,127,.4)}

/* ============ 页脚 ============ */
.site-footer{position:relative;background:var(--bg-elevated);border-top:1px solid var(--border);margin-top:88px;padding:64px 0 0}
.site-footer::before{
  content:"";position:absolute;top:-1px;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(45,245,194,.55),rgba(139,108,255,.5),transparent);
}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:32px}
.footer-brand .logo{margin-bottom:16px}
.footer-brand p{font-size:14px;color:var(--text-muted);line-height:1.8;max-width:330px}
.footer-social{display:flex;gap:10px;margin-top:18px}
.footer-social a{
  width:36px;height:36px;border-radius:10px;display:grid;place-items:center;
  background:var(--surface);border:1px solid var(--border);color:var(--text-muted);
  transition:color .2s,border-color .2s,transform .2s;
}
.footer-social a:hover{color:var(--primary);border-color:rgba(45,245,194,.55);transform:translateY(-2px)}
.footer-social svg{width:16px;height:16px}
.footer-col h4{font-size:15px;font-weight:700;margin-bottom:16px;color:var(--text)}
.footer-col ul{display:grid;gap:10px}
.footer-col a,.footer-col span{font-size:14px;color:var(--text-muted)}
.footer-col a:hover{color:var(--primary)}
.footer-bottom{
  margin-top:48px;padding:22px 0;border-top:1px solid var(--border);
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;
  font-size:13px;color:var(--text-dim);
}
.footer-bottom .sep{opacity:.5;margin:0 6px}

/* ============ 移动端抽屉 ============ */
.drawer{position:fixed;inset:0;z-index:90;visibility:hidden;opacity:0;transition:opacity .25s ease,visibility .25s ease}
.drawer.is-open{visibility:visible;opacity:1}
.drawer-mask{position:absolute;inset:0;background:rgba(0,0,0,.6)}
.drawer-panel{
  position:absolute;top:0;right:0;width:min(84%,340px);height:100%;
  background:var(--bg-elevated);border-left:1px solid var(--border);
  display:flex;flex-direction:column;padding:22px;
  transform:translateX(100%);transition:transform .3s cubic-bezier(.3,.8,.3,1);
  overflow-y:auto;
}
.drawer.is-open .drawer-panel{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:26px}
.drawer-close{
  width:38px;height:38px;border-radius:10px;display:grid;place-items:center;
  border:1px solid var(--border);background:var(--surface);color:var(--text-muted);
}
.drawer-close:hover{color:var(--primary);border-color:rgba(45,245,194,.5)}
.drawer-nav{display:grid;gap:6px}
.drawer-nav a{
  padding:14px 14px;border-radius:12px;font-size:17px;font-weight:600;color:var(--text);
  border:1px solid transparent;transition:background .2s,color .2s,border-color .2s;
}
.drawer-nav a:hover,.drawer-nav a.active{background:rgba(45,245,194,.08);color:var(--primary);border-color:rgba(45,245,194,.3)}
.drawer-foot{margin-top:auto;padding-top:24px}
.drawer-note{font-size:12.5px;color:var(--text-dim);margin-bottom:12px;line-height:1.6}

/* ============ 响应式 ============ */
@media (max-width:1279px){
  .hero h1{font-size:46px}
  .hero-inner{gap:36px}
}
@media (max-width:1023px){
  .main-nav{display:none}
  .menu-toggle{display:grid}
  .header-inner{height:64px}
  .hero{padding:56px 0 68px}
  .hero-inner{grid-template-columns:1fr;gap:40px}
  .hero h1{font-size:40px}
  .hero-sub{max-width:100%}
  .hero-visual{max-width:560px}
  .section{padding:70px 0}
  .section-head{flex-direction:column;align-items:flex-start;gap:14px}
  .section-head h2{font-size:30px}
  .feature-grid{grid-template-columns:1fr}
  .req-grid{grid-template-columns:1fr 1fr}
  .shot-card{flex:0 0 clamp(260px,44%,330px)}
  .cms-news-list{grid-template-columns:1fr}
  .feedback-wrap{grid-template-columns:1fr;padding:28px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
  .download-band{grid-template-columns:1fr;padding:28px}
  .qr-box{justify-items:start}
}
@media (max-width:767px){
  .container{padding:0 16px}
  .header-inner{height:62px;gap:12px}
  .logo{font-size:17px}
  .logo-mark{width:30px;height:30px}
  .header-actions .btn-sm{display:none}
  .hero h1{font-size:34px}
  .hero-sub{font-size:15.5px}
  .hero-actions .btn{flex:1 1 100%}
  .hero-badges li{flex:1 1 45%;min-width:0}
  .section{padding:56px 0}
  .section-head h2{font-size:26px}
  .feature-lg h3{font-size:21px}
  .feature-card{padding:22px}
  .req-grid{grid-template-columns:1fr}
  .review-wall{columns:1}
  .shot-card{flex:0 0 82%}
  .shot-body h3{font-size:16px}
  .news-card{grid-template-columns:1fr;gap:12px}
  .news-thumb{width:100%;height:150px}
  .form-grid{grid-template-columns:1fr}
  .form-foot .btn{width:100%}
  .faq-q{font-size:16px;padding:18px 12px}
  .footer-grid{grid-template-columns:1fr}
  .site-footer{margin-top:56px;padding-top:48px}
  .download-info h2{font-size:23px}
  .feedback-aside h2{font-size:23px}
  .float-chip{font-size:12px;padding:7px 11px}
  .chip-a{left:0}
  .chip-b{right:0}
}
@media (max-width:520px){
  .hero h1{font-size:31px;line-height:1.2}
  .eyebrow{font-size:12px;padding:5px 11px}
  .section-head h2{font-size:24px}
  .logo-text{white-space:nowrap}
  .qr{width:100px;height:100px}
}

/* roulang page: article */
:root{
  --bg:#080B12;
  --bg-elevated:#0F1520;
  --surface:#121A27;
  --surface-2:#172233;
  --border:#263449;
  --border-strong:#354A66;
  --text:#E8EEF7;
  --text-muted:#9AA8BC;
  --text-dim:#6F7F95;
  --primary:#2DF5C2;
  --primary-ink:#04110D;
  --secondary:#8B6CFF;
  --accent:#FF7A4D;
  --star:#FFD166;
  --success:#35D07F;
  --danger:#FF5C7A;
  --focus:#2DF5C2;
  --nav-bg:rgba(8,11,18,.92);
  --radius-card:16px;
  --radius-btn:12px;
  --radius-input:10px;
  --shadow:0 10px 30px rgba(0,0,0,.28);
  --shadow-hover:0 16px 44px rgba(0,0,0,.4);
  --container:1200px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:96px}
body{
  margin:0;
  font-family:"HarmonyOS Sans SC","PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
  background:var(--bg);
  color:var(--text);
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font-family:inherit}
h1,h2,h3,h4,p,ul,ol,figure{margin:0}
ul,ol{padding-left:0;list-style:none}
:focus-visible{outline:2px solid var(--focus);outline-offset:2px;border-radius:6px}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:120;
  background:var(--nav-bg);
  -webkit-backdrop-filter:blur(14px);
  backdrop-filter:blur(14px);
  border-bottom:1px solid var(--border);
  transition:box-shadow .25s ease,background .25s ease;
}
.site-header::after{
  content:"";position:absolute;left:0;right:0;bottom:-1px;height:1px;
  background:linear-gradient(90deg,transparent,rgba(45,245,194,.75),rgba(139,108,255,.7),transparent);
  pointer-events:none;
}
.site-header.is-scrolled{box-shadow:0 12px 30px rgba(0,0,0,.45)}
.header-inner{display:flex;align-items:center;gap:24px;height:68px}
.logo{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto}
.logo-mark{
  width:36px;height:36px;border-radius:11px;display:grid;place-items:center;
  background:linear-gradient(150deg,rgba(45,245,194,.16),rgba(139,108,255,.16));
  border:1px solid var(--border-strong);
}
.logo-mark svg{width:22px;height:22px}
.logo-text{font-size:19px;font-weight:800;letter-spacing:.02em;color:var(--text);white-space:nowrap}
.main-nav{display:flex;align-items:center;gap:4px;margin-right:auto}
.nav-link{
  position:relative;display:inline-flex;align-items:center;
  padding:9px 14px 11px;border-radius:10px;
  font-size:15px;font-weight:600;color:var(--text-muted);
  transition:color .2s ease,background .2s ease;
}
.nav-link:hover{color:var(--primary);background:rgba(45,245,194,.06)}
.nav-link.active{color:var(--primary);background:rgba(45,245,194,.08)}
.nav-link.active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:4px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--primary),var(--secondary));
  box-shadow:0 0 10px rgba(45,245,194,.7);
}
.header-actions{display:flex;align-items:center;gap:12px;flex:0 0 auto}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:11px;
  border:1px solid var(--border);background:var(--surface);
  color:var(--text);cursor:pointer;align-items:center;justify-content:center;
  transition:border-color .2s ease,color .2s ease;
}
.nav-toggle:hover{border-color:var(--primary);color:var(--primary)}
.nav-toggle span{display:block;width:18px;height:2px;background:currentColor;border-radius:2px;margin:3px auto}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:50px;padding:0 26px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:700;letter-spacing:.01em;
  border:1px solid transparent;cursor:pointer;
  transition:transform .18s ease,box-shadow .22s ease,background .2s ease,color .2s ease,border-color .2s ease;
}
.btn-primary{background:var(--accent);color:#200B02;box-shadow:0 8px 24px rgba(255,122,77,.24)}
.btn-primary:hover{filter:brightness(1.08);transform:translateY(-1px);box-shadow:0 12px 34px rgba(255,122,77,.38)}
.btn-primary:active{transform:translateY(0);filter:brightness(.98)}
.btn-ghost{background:transparent;border-color:rgba(45,245,194,.48);color:var(--primary)}
.btn-ghost:hover{background:rgba(45,245,194,.08);box-shadow:0 0 0 1px rgba(45,245,194,.4),0 0 26px rgba(45,245,194,.16)}
.btn-ghost:active{background:rgba(45,245,194,.14)}
.btn-sm{height:42px;padding:0 18px;font-size:14px}
.btn[disabled],.btn.is-disabled{opacity:.45;cursor:not-allowed;transform:none;box-shadow:none}

/* ---------- 徽章 ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  height:26px;padding:0 12px;border-radius:999px;
  font-size:12px;font-weight:700;letter-spacing:.02em;
  border:1px solid rgba(45,245,194,.4);color:var(--primary);
  background:rgba(45,245,194,.08);
}
.badge-violet{border-color:rgba(139,108,255,.45);color:#BCA9FF;background:rgba(139,108,255,.1)}
.badge-muted{border-color:var(--border);color:var(--text-muted);background:var(--surface-2)}

/* ---------- 文章头 ---------- */
.article-hero{
  position:relative;overflow:hidden;
  border-bottom:1px solid var(--border);
  background:linear-gradient(180deg,#0A0F18 0%,#080B12 100%);
}
.article-hero::before{
  content:"";position:absolute;inset:0;
  background-image:radial-gradient(rgba(45,245,194,.07) 1px,transparent 1px);
  background-size:24px 24px;opacity:.55;pointer-events:none;
}
.article-hero::after{
  content:"";position:absolute;inset:0;
  background:
    radial-gradient(620px 300px at 12% 0%,rgba(45,245,194,.14),transparent 70%),
    radial-gradient(560px 320px at 92% 12%,rgba(139,108,255,.15),transparent 72%),
    url('/assets/images/backpic/back-1.png');
  background-size:auto,auto,cover;
  background-position:center,center,center;
  opacity:.5;pointer-events:none;mix-blend-mode:screen;
}
.article-hero .container{position:relative;z-index:2;padding-top:30px;padding-bottom:44px}
.crumbs{display:flex;align-items:center;flex-wrap:wrap;gap:8px;font-size:13px;color:var(--text-dim)}
.crumbs a{color:var(--text-muted);transition:color .2s ease}
.crumbs a:hover{color:var(--primary)}
.crumbs .sep{color:var(--border-strong)}
.crumbs .current{color:var(--primary)}
.article-head{display:flex;align-items:flex-end;justify-content:space-between;gap:32px;margin-top:26px}
.article-head-main{max-width:840px}
.article-kicker{display:flex;align-items:center;flex-wrap:wrap;gap:12px;margin-bottom:18px}
.article-kicker .note{font-size:13px;color:var(--text-dim)}
.article-head h1{
  font-size:44px;line-height:1.2;font-weight:800;letter-spacing:.01em;
  color:var(--text);text-wrap:balance;
}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:18px;margin-top:20px;font-size:14px;color:var(--text-dim)}
.article-meta span{display:inline-flex;align-items:center;gap:7px}
.article-meta i{color:var(--primary);font-size:13px}
.article-meta time{color:var(--text-muted)}
.article-head-side{flex:0 0 auto;padding-bottom:6px}

/* ---------- 阅读区 ---------- */
.reading-section{padding:56px 0 72px}
.reading-layout{
  display:grid;grid-template-columns:minmax(0,780px) 210px;
  gap:56px;justify-content:center;align-items:start;
}
.article-body{
  font-size:17px;line-height:1.85;color:#D5DFEC;
  overflow-wrap:anywhere;
}
.article-body > *:first-child{margin-top:0}
.article-body h2{
  font-size:28px;line-height:1.32;font-weight:700;color:var(--text);
  margin:46px 0 18px;padding-left:14px;border-left:4px solid var(--primary);
}
.article-body h3{font-size:21px;line-height:1.4;font-weight:700;color:var(--text);margin:34px 0 14px}
.article-body h4{font-size:18px;line-height:1.45;font-weight:600;color:var(--text);margin:26px 0 12px}
.article-body p{margin:0 0 22px}
.article-body ul,.article-body ol{margin:0 0 22px;padding-left:24px}
.article-body ul{list-style:disc}
.article-body ol{list-style:decimal}
.article-body li{margin-bottom:10px;line-height:1.8}
.article-body li::marker{color:var(--primary)}
.article-body a{color:var(--primary);text-decoration:underline;text-underline-offset:4px;transition:color .2s ease}
.article-body a:hover{color:#7CFFDE}
.article-body strong{color:#FFFFFF;font-weight:700}
.article-body blockquote{
  margin:28px 0;padding:18px 24px;
  background:var(--surface-2);border-left:4px solid var(--secondary);
  border-radius:0 12px 12px 0;color:var(--text-muted);
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{border-radius:12px;margin:26px auto;box-shadow:var(--shadow)}
.article-body figure{margin:26px 0}
.article-body figcaption{font-size:13px;color:var(--text-dim);text-align:center;margin-top:10px}
.article-body hr{border:0;border-top:1px solid var(--border);margin:36px 0}
.article-body table{
  display:block;width:100%;overflow-x:auto;
  border-collapse:collapse;margin:26px 0;font-size:15px;
}
.article-body th,.article-body td{
  border:1px solid var(--border);padding:10px 14px;text-align:left;white-space:normal;
}
.article-body th{background:var(--surface-2);color:var(--text);font-weight:600}
.article-body code{
  background:var(--surface-2);border:1px solid var(--border);
  padding:2px 6px;border-radius:6px;font-size:14px;color:#8FF3D9;
}
.article-body pre{
  background:var(--bg-elevated);border:1px solid var(--border);
  border-radius:12px;padding:18px;overflow-x:auto;margin:24px 0;
}
.article-body pre code{background:none;border:0;padding:0}

/* ---------- 目录 ---------- */
.toc-aside{position:sticky;top:96px;align-self:start}
.toc-card{
  background:var(--surface);border:1px solid var(--border);
  border-radius:var(--radius-card);padding:20px 18px;
}
.toc-title{
  font-size:13px;font-weight:700;letter-spacing:.08em;text-transform:uppercase;
  color:var(--text-dim);margin-bottom:14px;display:flex;align-items:center;gap:8px;
}
.toc-title i{color:var(--primary)}
.toc-list{display:flex;flex-direction:column;gap:2px;border-left:1px solid var(--border);padding-left:12px}
.toc-list a{
  display:block;font-size:14px;line-height:1.55;color:var(--text-muted);
  padding:6px 8px;border-radius:8px;transition:color .2s ease,background .2s ease;
}
.toc-list a:hover{color:var(--primary);background:rgba(45,245,194,.07)}

/* ---------- 空态 ---------- */
.empty-state{
  max-width:620px;margin:0 auto;text-align:center;
  background:var(--surface);border:1px dashed var(--border-strong);
  border-radius:var(--radius-card);padding:56px 32px;
}
.empty-state .empty-icon{
  width:64px;height:64px;margin:0 auto 22px;border-radius:18px;
  display:grid;place-items:center;font-size:26px;color:var(--primary);
  background:rgba(45,245,194,.08);border:1px solid rgba(45,245,194,.35);
}
.empty-state h2{font-size:24px;font-weight:700;margin-bottom:12px}
.empty-state p{color:var(--text-muted);font-size:15px;margin-bottom:26px}

/* ---------- 文末 ---------- */
.article-foot{max-width:780px;margin:56px auto 0}
.tag-row{display:flex;flex-wrap:wrap;align-items:center;gap:10px;padding-top:28px;border-top:1px solid var(--border)}
.tag-row .tag-label{font-size:13px;color:var(--text-dim);margin-right:4px}
.tag{
  display:inline-flex;align-items:center;height:30px;padding:0 14px;border-radius:999px;
  font-size:13px;color:var(--text-muted);background:var(--surface-2);
  border:1px solid var(--border);transition:color .2s ease,border-color .2s ease;
}
.tag:hover{color:var(--primary);border-color:rgba(45,245,194,.45)}

/* ---------- 相关推荐 ---------- */
.related{padding:0 0 88px}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:28px}
.section-head h2{font-size:30px;line-height:1.3;font-weight:700}
.section-head .sub{font-size:14px;color:var(--text-dim);margin-top:8px}
.section-head .more{font-size:14px;font-weight:600;color:var(--primary);display:inline-flex;align-items:center;gap:6px}
.section-head .more:hover{text-shadow:0 0 14px rgba(45,245,194,.6)}
.related-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px}
.rel-card{
  display:flex;flex-direction:column;overflow:hidden;
  background:var(--surface);border:1px solid var(--border);
  border-radius:var(--radius-card);box-shadow:var(--shadow);
  transition:transform .2s ease,border-color .2s ease,box-shadow .22s ease;
}
.rel-card:hover{transform:translateY(-2px);border-color:rgba(45,245,194,.55);box-shadow:var(--shadow-hover)}
.rel-thumb{aspect-ratio:16/10;overflow:hidden;background:var(--surface-2)}
.rel-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease}
.rel-card:hover .rel-thumb img{transform:scale(1.04)}
.rel-body{padding:18px 20px 22px;display:flex;flex-direction:column;gap:10px;flex:1}
.rel-body h3{font-size:18px;line-height:1.45;font-weight:700;color:var(--text)}
.rel-body p{font-size:14px;line-height:1.7;color:var(--text-muted);flex:1}
.rel-meta{display:flex;align-items:center;justify-content:space-between;font-size:12px;color:var(--text-dim)}
.rel-meta .go{color:var(--primary);font-weight:600}

/* ---------- 下载条带 ---------- */
.download-strip{padding:0 0 96px}
.download-panel{
  position:relative;overflow:hidden;
  display:grid;grid-template-columns:repeat(2,minmax(0,1fr));align-items:center;gap:32px;
  background:var(--surface-2);border:1px solid var(--border);
  border-radius:24px;padding:40px 44px;box-shadow:var(--shadow);
}
.download-panel::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:
    radial-gradient(420px 200px at 0% 0%,rgba(45,245,194,.16),transparent 70%),
    radial-gradient(420px 220px at 100% 100%,rgba(139,108,255,.18),transparent 72%);
}
.download-panel > *{position:relative;z-index:1}
.download-panel h2{font-size:30px;line-height:1.3;font-weight:700;margin-bottom:12px}
.download-panel p{font-size:15px;color:var(--text-muted);margin-bottom:22px;max-width:520px}
.download-facts{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:24px}
.fact{
  display:inline-flex;align-items:center;gap:8px;height:32px;padding:0 14px;
  border-radius:999px;background:rgba(255,255,255,.03);
  border:1px solid var(--border);font-size:13px;color:var(--text-muted);
}
.fact i{color:var(--primary);font-size:12px}
.download-actions{display:flex;flex-wrap:wrap;gap:12px}
.qr-block{display:flex;flex-direction:column;align-items:flex-end;gap:12px}
.qr-box{
  width:132px;height:132px;border-radius:16px;display:grid;place-items:center;
  background:var(--bg-elevated);border:1px solid var(--border-strong);color:var(--text-dim);
  font-size:12px;text-align:center;line-height:1.5;
}
.qr-box i{display:block;font-size:26px;color:var(--primary);margin-bottom:8px}
.qr-note{font-size:12px;color:var(--text-dim);text-align:right}

/* ---------- 页脚 ---------- */
.site-footer{
  position:relative;background:#06090F;border-top:1px solid var(--border);
  padding:64px 0 0;
}
.site-footer::before{
  content:"";position:absolute;top:-1px;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(45,245,194,.65),rgba(139,108,255,.6),transparent);
}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px;padding-bottom:48px}
.footer-brand .logo{margin-bottom:16px}
.footer-brand p{font-size:14px;line-height:1.8;color:var(--text-muted);max-width:340px}
.footer-social{display:flex;gap:10px;margin-top:20px}
.footer-social a{
  width:38px;height:38px;border-radius:11px;display:grid;place-items:center;
  border:1px solid var(--border);color:var(--text-muted);background:var(--surface);
  transition:color .2s ease,border-color .2s ease,transform .2s ease;
}
.footer-social a:hover{color:var(--primary);border-color:rgba(45,245,194,.5);transform:translateY(-2px)}
.footer-social svg{width:18px;height:18px}
.footer-col h4{font-size:14px;font-weight:700;letter-spacing:.06em;color:var(--text);margin-bottom:18px}
.footer-col ul{display:flex;flex-direction:column;gap:12px}
.footer-col a,.footer-col span{font-size:14px;color:var(--text-muted);transition:color .2s ease}
.footer-col a:hover{color:var(--primary)}
.footer-bottom{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:16px;
  padding:22px 0 28px;border-top:1px solid var(--border);font-size:13px;color:var(--text-dim);
}
.footer-bottom a{color:var(--text-muted)}
.footer-bottom a:hover{color:var(--primary)}
.footer-bottom .links{display:flex;flex-wrap:wrap;gap:16px}

/* ---------- 抽屉 ---------- */
.drawer-mask{
  position:fixed;inset:0;z-index:200;background:rgba(0,0,0,.6);
  opacity:0;visibility:hidden;transition:opacity .25s ease,visibility .25s ease;
}
.drawer-mask.is-open{opacity:1;visibility:visible}
.drawer{
  position:fixed;top:0;right:0;bottom:0;z-index:210;width:84%;max-width:360px;
  background:var(--bg-elevated);border-left:1px solid var(--border);
  transform:translateX(100%);transition:transform .28s ease;
  display:flex;flex-direction:column;padding:22px 22px 24px;
}
.drawer.is-open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding-bottom:18px;border-bottom:1px solid var(--border)}
.drawer-close{
  width:40px;height:40px;border-radius:11px;border:1px solid var(--border);
  background:var(--surface);color:var(--text);font-size:18px;cursor:pointer;
  display:grid;place-items:center;transition:color .2s ease,border-color .2s ease;
}
.drawer-close:hover{color:var(--primary);border-color:rgba(45,245,194,.5)}
.drawer-nav{display:flex;flex-direction:column;gap:6px;padding:22px 0}
.drawer-nav a{
  font-size:17px;font-weight:600;color:var(--text-muted);
  padding:13px 14px;border-radius:12px;transition:color .2s ease,background .2s ease;
}
.drawer-nav a:hover,.drawer-nav a.active{color:var(--primary);background:rgba(45,245,194,.08)}
.drawer-foot{margin-top:auto}
.drawer-foot .btn{width:100%}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .article-head h1{font-size:38px}
  .reading-layout{grid-template-columns:minmax(0,1fr) 200px;gap:40px}
}
@media (max-width:1023px){
  .main-nav{display:none}
  .nav-toggle{display:inline-flex}
  .header-actions .btn{display:none}
  .reading-layout{grid-template-columns:minmax(0,1fr);gap:0}
  .toc-aside{display:none}
  .article-head{flex-direction:column;align-items:flex-start;gap:20px}
  .article-head h1{font-size:34px}
  .related-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr;gap:32px}
  .download-panel{grid-template-columns:1fr;padding:34px 28px}
  .qr-block{align-items:flex-start}
  .qr-note{text-align:left}
}
@media (max-width:767px){
  .container{padding:0 18px}
  .article-hero .container{padding-top:22px;padding-bottom:34px}
  .article-head h1{font-size:30px}
  .reading-section{padding:40px 0 56px}
  .article-body{font-size:16px;line-height:1.85}
  .article-body h2{font-size:24px;margin-top:36px}
  .article-body h3{font-size:19px}
  .section-head{flex-direction:column;align-items:flex-start;gap:12px}
  .section-head h2{font-size:25px}
  .related-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
  .download-strip{padding-bottom:64px}
  .download-panel h2{font-size:24px}
  .btn{width:100%}
  .btn-sm{width:auto}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}
@media (max-width:560px){
  .logo-text{font-size:17px}
  .article-head h1{font-size:27px}
  .article-meta{gap:12px;font-size:13px}
  .footer-grid{grid-template-columns:1fr}
  .qr-box{width:104px;height:104px;font-size:11px}
  .empty-state{padding:40px 22px}
}

/* roulang page: category1 */
:root{
  --bg:#080B12;
  --bg-elevated:#0F1520;
  --surface:#121A27;
  --surface-2:#172233;
  --border:#263449;
  --border-strong:#354A66;
  --text:#E8EEF7;
  --text-muted:#9AA8BC;
  --text-dim:#6F7F95;
  --primary:#2DF5C2;
  --primary-ink:#04110D;
  --secondary:#8B6CFF;
  --accent:#FF7A4D;
  --star:#FFD166;
  --success:#35D07F;
  --danger:#FF5C7A;
  --focus:#2DF5C2;
  --nav-bg:rgba(8,11,18,.92);
  --radius-card:16px;
  --radius-btn:12px;
  --radius-input:10px;
  --radius-img:12px;
  --shadow:0 10px 30px rgba(0,0,0,.28);
  --shadow-hover:0 16px 44px rgba(0,0,0,.40);
  --glow:0 0 0 1px rgba(45,245,194,.45), 0 0 26px rgba(45,245,194,.18);
  --container:1200px;
  --gap:24px;
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"HarmonyOS Sans SC","PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  background-image:radial-gradient(rgba(45,245,194,.06) 1px, transparent 1px);
  background-size:24px 24px;
  pointer-events:none;
  z-index:0;
}
body.no-scroll{overflow:hidden;}
a{color:var(--primary);text-decoration:none;transition:color .2s ease;}
a:hover{color:#7BFFDC;}
img{max-width:100%;display:block;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
button{font-family:inherit;cursor:pointer;}
:focus-visible{outline:2px solid var(--focus);outline-offset:2px;border-radius:6px;}

.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding:0 24px;
  position:relative;
  z-index:1;
}

/* ===== Header ===== */
.site-header{
  position:sticky;
  top:0;
  z-index:90;
  background:var(--nav-bg);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  transition:box-shadow .25s ease;
}
.site-header::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:0;
  height:1px;
  background:linear-gradient(90deg,transparent,rgba(45,245,194,.6),rgba(139,108,255,.6),transparent);
}
.site-header.is-scrolled{box-shadow:0 12px 32px rgba(0,0,0,.45);}
.header-inner{
  display:flex;
  align-items:center;
  gap:24px;
  height:68px;
}
.logo{
  display:inline-flex;
  align-items:center;
  gap:10px;
  color:var(--text);
  flex:0 0 auto;
}
.logo:hover{color:var(--text);}
.logo-mark{
  width:34px;height:34px;
  display:inline-flex;
  align-items:center;justify-content:center;
  border-radius:10px;
  background:linear-gradient(145deg,rgba(45,245,194,.16),rgba(139,108,255,.16));
  border:1px solid rgba(45,245,194,.28);
  box-shadow:0 0 18px rgba(45,245,194,.12);
}
.logo-mark svg{width:20px;height:20px;}
.logo-text{
  font-size:19px;
  font-weight:800;
  letter-spacing:.5px;
  white-space:nowrap;
}
.main-nav{
  display:flex;
  align-items:center;
  gap:6px;
  margin-left:auto;
}
.nav-link{
  position:relative;
  display:inline-flex;
  align-items:center;
  padding:10px 14px;
  font-size:15px;
  font-weight:600;
  color:var(--text-muted);
  border-radius:10px;
  transition:color .2s ease,background .2s ease;
}
.nav-link::after{
  content:"";
  position:absolute;
  left:14px;right:14px;bottom:4px;
  height:2px;
  border-radius:2px;
  background:linear-gradient(90deg,var(--primary),var(--secondary));
  opacity:0;
  transform:scaleX(.4);
  transition:opacity .2s ease,transform .2s ease;
}
.nav-link:hover{
  color:var(--primary);
  background:rgba(45,245,194,.06);
}
.nav-link:hover::after{opacity:.6;transform:scaleX(1);}
.nav-link.active{
  color:var(--primary);
  background:rgba(45,245,194,.08);
  box-shadow:inset 0 0 0 1px rgba(45,245,194,.16);
}
.nav-link.active::after{opacity:1;transform:scaleX(1);}
.nav-cta{
  display:inline-flex;
  align-items:center;
  gap:8px;
  height:42px;
  padding:0 20px;
  margin-left:12px;
  border-radius:var(--radius-btn);
  background:var(--accent);
  color:#1B0B04;
  font-size:15px;
  font-weight:800;
  box-shadow:0 8px 22px rgba(255,122,77,.22);
  transition:transform .2s ease,filter .2s ease,box-shadow .2s ease;
  white-space:nowrap;
}
.nav-cta:hover{
  color:#1B0B04;
  filter:brightness(1.08);
  transform:translateY(-1px);
  box-shadow:0 12px 28px rgba(255,122,77,.34);
}
.nav-cta:active{transform:translateY(0) scale(.99);}
.nav-toggle{
  display:none;
  width:44px;height:44px;
  margin-left:auto;
  border-radius:10px;
  background:var(--surface-2);
  border:1px solid var(--border);
  color:var(--text);
  align-items:center;justify-content:center;
}
.nav-toggle svg{width:22px;height:22px;}

/* ===== Drawer ===== */
.drawer-mask{
  position:fixed;
  inset:0;
  background:rgba(0,0,0,.6);
  opacity:0;
  visibility:hidden;
  transition:opacity .25s ease,visibility .25s ease;
  z-index:95;
}
.drawer-mask.is-open{opacity:1;visibility:visible;}
.drawer{
  position:fixed;
  top:0;right:0;
  width:84%;
  max-width:340px;
  height:100%;
  background:var(--bg-elevated);
  border-left:1px solid var(--border);
  transform:translateX(100%);
  transition:transform .28s ease;
  z-index:96;
  display:flex;
  flex-direction:column;
  padding:22px 20px calc(20px + env(safe-area-inset-bottom));
}
.drawer.is-open{transform:translateX(0);}
.drawer-head{
  display:flex;
  align-items:center;
  justify-content:space-between;
  padding-bottom:18px;
  border-bottom:1px solid var(--border);
}
.drawer-close{
  width:40px;height:40px;
  border-radius:10px;
  background:var(--surface);
  border:1px solid var(--border);
  color:var(--text);
  display:inline-flex;align-items:center;justify-content:center;
}
.drawer-close svg{width:18px;height:18px;}
.drawer-nav{
  display:flex;
  flex-direction:column;
  gap:6px;
  padding:18px 0;
  flex:1 1 auto;
  overflow-y:auto;
}
.drawer-nav a{
  display:block;
  padding:14px 14px;
  font-size:17px;
  font-weight:600;
  color:var(--text-muted);
  border-radius:12px;
  border:1px solid transparent;
}
.drawer-nav a:hover,
.drawer-nav a.active{
  color:var(--primary);
  background:rgba(45,245,194,.08);
  border-color:rgba(45,245,194,.22);
}
.drawer-cta{
  display:flex;
  align-items:center;
  justify-content:center;
  height:52px;
  border-radius:var(--radius-btn);
  background:var(--accent);
  color:#1B0B04;
  font-weight:800;
  font-size:16px;
}
.drawer-cta:hover{color:#1B0B04;filter:brightness(1.08);}

/* ===== Breadcrumb ===== */
.breadcrumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-size:13px;
  color:var(--text-dim);
  padding:22px 0 0;
}
.breadcrumb a{color:var(--text-muted);}
.breadcrumb a:hover{color:var(--primary);}
.breadcrumb .sep{color:var(--border-strong);}
.breadcrumb .current{color:var(--text);}

/* ===== Category hero ===== */
.cat-hero{
  position:relative;
  overflow:hidden;
  padding:36px 0 64px;
  border-bottom:1px solid var(--border);
}
.cat-hero::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:url("/assets/images/backpic/back-1.png");
  background-size:cover;
  background-position:center;
  opacity:.16;
  z-index:0;
}
.cat-hero::after{
  content:"";
  position:absolute;
  inset:0;
  background:
    radial-gradient(520px 260px at 82% 18%,rgba(139,108,255,.20),transparent 70%),
    radial-gradient(600px 320px at 10% 90%,rgba(45,245,194,.14),transparent 72%),
    linear-gradient(180deg,rgba(8,11,18,.55),rgba(8,11,18,.96));
  z-index:0;
}
.cat-hero .container{position:relative;z-index:1;}
.hero-badges{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  margin-bottom:18px;
}
.badge{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:5px 13px;
  font-size:12.5px;
  font-weight:600;
  letter-spacing:.3px;
  border-radius:999px;
  border:1px solid rgba(45,245,194,.32);
  color:var(--primary);
  background:rgba(45,245,194,.07);
}
.badge.purple{
  border-color:rgba(139,108,255,.36);
  color:#C0B0FF;
  background:rgba(139,108,255,.10);
}
.badge.orange{
  border-color:rgba(255,122,77,.36);
  color:#FFB799;
  background:rgba(255,122,77,.10);
}
.cat-hero h1{
  font-size:clamp(32px,4.4vw,50px);
  line-height:1.16;
  font-weight:800;
  letter-spacing:.5px;
  max-width:860px;
}
.cat-hero h1 .hl{
  background:linear-gradient(96deg,var(--primary),var(--secondary));
  -webkit-background-clip:text;
  background-clip:text;
  color:transparent;
}
.hero-desc{
  margin-top:18px;
  max-width:720px;
  font-size:16.5px;
  line-height:1.8;
  color:var(--text-muted);
}
.hero-actions{
  display:flex;
  flex-wrap:wrap;
  gap:14px;
  margin-top:28px;
}
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:9px;
  height:50px;
  padding:0 26px;
  border-radius:var(--radius-btn);
  font-size:15.5px;
  font-weight:700;
  border:1px solid transparent;
  transition:transform .2s ease,filter .2s ease,background .2s ease,box-shadow .2s ease,border-color .2s ease,color .2s ease;
}
.btn svg{width:18px;height:18px;}
.btn-primary{
  background:var(--accent);
  color:#1B0B04;
  box-shadow:0 10px 26px rgba(255,122,77,.24);
}
.btn-primary:hover{
  color:#1B0B04;
  filter:brightness(1.08);
  transform:translateY(-1px);
  box-shadow:0 14px 32px rgba(255,122,77,.36);
}
.btn-primary:active{transform:translateY(0) scale(.99);}
.btn-secondary{
  background:transparent;
  border-color:rgba(45,245,194,.45);
  color:var(--primary);
}
.btn-secondary:hover{
  color:var(--primary);
  background:rgba(45,245,194,.08);
  box-shadow:0 0 0 1px rgba(45,245,194,.3),0 0 24px rgba(45,245,194,.16);
  transform:translateY(-1px);
}
.btn-secondary:active{transform:translateY(0);}
.btn:disabled,.btn[disabled]{opacity:.45;cursor:not-allowed;transform:none;}

.hero-meta{
  display:flex;
  flex-wrap:wrap;
  gap:28px;
  margin-top:34px;
  padding-top:22px;
  border-top:1px solid rgba(38,52,73,.8);
  max-width:760px;
}
.hero-meta div{min-width:110px;}
.hero-meta dt{
  font-size:12px;
  color:var(--text-dim);
  letter-spacing:.6px;
  margin-bottom:4px;
}
.hero-meta dd{
  margin:0;
  font-size:14.5px;
  font-weight:600;
  color:var(--text);
}

/* ===== Sections ===== */
.section{
  padding:84px 0;
  position:relative;
}
.section.alt{background:linear-gradient(180deg,rgba(15,21,32,.9),rgba(8,11,18,.9));border-top:1px solid var(--border);border-bottom:1px solid var(--border);}
.section-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:24px;
  margin-bottom:40px;
  flex-wrap:wrap;
}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:12.5px;
  font-weight:700;
  letter-spacing:2px;
  color:var(--primary);
  text-transform:uppercase;
  margin-bottom:12px;
}
.eyebrow::before{
  content:"";
  width:22px;height:2px;
  border-radius:2px;
  background:linear-gradient(90deg,var(--primary),var(--secondary));
}
.section-title{
  font-size:clamp(26px,3vw,34px);
  line-height:1.25;
  font-weight:700;
  letter-spacing:.4px;
}
.section-sub{
  margin-top:12px;
  font-size:15.5px;
  color:var(--text-muted);
  max-width:640px;
  line-height:1.8;
}
.section-link{
  font-size:14.5px;
  font-weight:600;
  color:var(--primary);
  text-decoration:underline;
  text-underline-offset:5px;
  white-space:nowrap;
}

/* ===== Check grid ===== */
.check-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:var(--gap);
}
.check-card{
  background:var(--surface);
  border:1px solid var(--border);
  border-radius:var(--radius-card);
  padding:26px 24px;
  box-shadow:var(--shadow);
  transition:transform .22s ease,border-color .22s ease,box-shadow .22s ease;
}
.check-card:hover{
  transform:translateY(-2px);
  border-color:rgba(45,245,194,.5);
  box-shadow:var(--shadow-hover);
}
.check-card .icon{
  width:44px;height:44px;
  border-radius:12px;
  display:inline-flex;
  align-items:center;justify-content:center;
  background:rgba(45,245,194,.08);
  border:1px solid rgba(45,245,194,.24);
  color:var(--primary);
  margin-bottom:16px;
}
.check-card .icon.purple{background:rgba(139,108,255,.10);border-color:rgba(139,108,255,.28);color:#B9A6FF;}
.check-card .icon.orange{background:rgba(255,122,77,.10);border-color:rgba(255,122,77,.28);color:#FFA07A;}
.check-card .icon svg{width:22px;height:22px;}
.check-card h3{
  font-size:19px;
  font-weight:700;
  margin-bottom:14px;
}
.def-list{
  display:flex;
  flex-direction:column;
  gap:10px;
}
.def-list .row{
  display:flex;
  align-items:baseline;
  justify-content:space-between;
  gap:14px;
  padding-bottom:10px;
  border-bottom:1px dashed rgba(38,52,73,.9);
  font-size:14px;
}
.def-list .row:last-child{border-bottom:0;padding-bottom:0;}
.def-list .label{color:var(--text-dim);font-size:12.5px;white-space:nowrap;}
.def-list .value{color:var(--text);font-weight:600;text-align:right;}

/* ===== Timeline ===== */
.timeline{
  position:relative;
  display:flex;
  flex-direction:column;
  gap:32px;
}
.timeline::before{
  content:"";
  position:absolute;
  left:47px;
  top:16px;bottom:16px;
  width:1px;
  background:linear-gradient(180deg,rgba(45,245,194,.55),rgba(139,108,255,.35),transparent);
}
.step{
  position:relative;
  display:grid;
  grid-template-columns:96px 1fr 320px;
  gap:28px;
  align-items:start;
  padding:26px;
  background:var(--surface);
  border:1px solid var(--border);
  border-radius:var(--radius-card);
  box-shadow:var(--shadow);
  transition:border-color .22s ease,transform .22s ease,box-shadow .22s ease;
}
.step:hover{
  border-color:rgba(45,245,194,.45);
  transform:translateY(-2px);
  box-shadow:var(--shadow-hover);
}
.step-num{
  font-size:42px;
  font-weight:800;
  line-height:1;
  letter-spacing:1px;
  background:linear-gradient(160deg,var(--primary),var(--secondary));
  -webkit-background-clip:text;
  background-clip:text;
  color:transparent;
  padding-top:2px;
}
.step-body h3{
  font-size:21px;
  font-weight:700;
  margin-bottom:10px;
}
.step-body p{
  font-size:15px;
  line-height:1.8;
  color:var(--text-muted);
  margin-bottom:14px;
}
.step-tags{
  display:flex;
  flex-wrap:wrap;
  gap:8px;
}
.tag{
  display:inline-flex;
  align-items:center;
  padding:4px 11px;
  font-size:12px;
  font-weight:600;
  border-radius:999px;
  color:var(--text-muted);
  background:var(--surface-2);
  border:1px solid var(--border);
}
.tag.on{color:var(--primary);border-color:rgba(45,245,194,.34);background:rgba(45,245,194,.07);}
.step-media{
  border-radius:var(--radius-img);
  overflow:hidden;
  border:1px solid var(--border-strong);
  background:var(--bg-elevated);
  box-shadow:0 8px 24px rgba(0,0,0,.35);
  aspect-ratio:16/10;
}
.step-media img{
  width:100%;height:100%;
  object-fit:cover;
  transition:transform .4s ease;
}
.step:hover .step-media img{transform:scale(1.03);}

.note-bar{
  margin-top:36px;
  display:flex;
  align-items:flex-start;
  gap:14px;
  padding:18px 22px;
  border-radius:14px;
  background:rgba(139,108,255,.08);
  border:1px solid rgba(139,108,255,.26);
  border-left:3px solid var(--secondary);
  font-size:14.5px;
  line-height:1.8;
  color:var(--text-muted);
}
.note-bar svg{width:20px;height:20px;flex:0 0 auto;color:#B9A6FF;margin-top:2px;}

/* ===== FAQ ===== */
.faq{
  max-width:900px;
  margin:0 auto;
  border-top:1px solid var(--border);
}
.faq-item{
  border-bottom:1px solid var(--border);
  transition:background .2s ease;
}
.faq-item[open]{
  background:var(--surface);
  box-shadow:inset 2px 0 0 var(--primary);
}
.faq-item summary{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:18px;
  padding:22px 20px;
  font-size:18px;
  font-weight:600;
  color:var(--text);
  cursor:pointer;
  list-style:none;
  transition:color .2s ease;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary:hover{color:var(--primary);}
.faq-item summary .plus{
  position:relative;
  flex:0 0 auto;
  width:22px;height:22px;
  display:inline-flex;
  align-items:center;justify-content:center;
  color:var(--primary);
}
.faq-item summary .plus::before,
.faq-item summary .plus::after{
  content:"";
  position:absolute;
  background:currentColor;
  border-radius:2px;
  transition:transform .22s ease,opacity .22s ease;
}
.faq-item summary .plus::before{width:14px;height:2px;}
.faq-item summary .plus::after{width:2px;height:14px;}
.faq-item[open] summary .plus::after{transform:rotate(90deg);opacity:0;}
.faq-body{
  padding:0 20px 24px;
  font-size:15px;
  line-height:1.85;
  color:var(--text-muted);
  max-width:780px;
}
.faq-body a{text-decoration:underline;text-underline-offset:4px;}

/* ===== Download band ===== */
.download-band{
  background:var(--surface-2);
  border:1px solid var(--border-strong);
  border-radius:20px;
  padding:34px;
  display:grid;
  grid-template-columns:1fr 160px;
  gap:34px;
  align-items:center;
  box-shadow:var(--shadow);
  position:relative;
  overflow:hidden;
}
.download-band::before{
  content:"";
  position:absolute;
  inset:0;
  background:
    radial-gradient(420px 200px at 88% 10%,rgba(139,108,255,.20),transparent 70%),
    radial-gradient(320px 180px at 0% 100%,rgba(45,245,194,.14),transparent 72%);
  pointer-events:none;
}
.download-band > *{position:relative;z-index:1;}
.download-band h2{
  font-size:clamp(24px,2.8vw,30px);
  font-weight:700;
  line-height:1.3;
  margin-bottom:12px;
}
.download-band p{
  font-size:15px;
  color:var(--text-muted);
  line-height:1.8;
  max-width:620px;
}
.dl-meta{
  display:flex;
  flex-wrap:wrap;
  gap:22px;
  margin:22px 0 24px;
}
.dl-meta div span{
  display:block;
  font-size:12px;
  color:var(--text-dim);
  margin-bottom:3px;
}
.dl-meta div strong{
  font-size:14.5px;
  font-weight:700;
  color:var(--text);
}
.platform-row{
  display:flex;
  flex-wrap:wrap;
  gap:12px;
}
.platform-btn{
  display:inline-flex;
  align-items:center;
  gap:9px;
  height:46px;
  padding:0 18px;
  border-radius:11px;
  background:var(--surface);
  border:1px solid var(--border);
  color:var(--text);
  font-size:14px;
  font-weight:600;
  transition:border-color .2s ease,transform .2s ease,color .2s ease,box-shadow .2s ease;
}
.platform-btn svg{width:17px;height:17px;color:var(--primary);}
.platform-btn:hover{
  color:var(--text);
  border-color:rgba(45,245,194,.55);
  transform:translateY(-1px);
  box-shadow:0 0 0 1px rgba(45,245,194,.2),0 0 20px rgba(45,245,194,.12);
}
.platform-btn:active{transform:translateY(0);}
.qr-box{
  width:160px;
  display:flex;
  flex-direction:column;
  align-items:center;
  gap:10px;
}
.qr-code{
  width:140px;height:140px;
  border-radius:14px;
  border:1px solid rgba(45,245,194,.35);
  background:
    linear-gradient(90deg,rgba(45,245,194,.22) 1px,transparent 1px) 0 0/12px 12px,
    linear-gradient(0deg,rgba(45,245,194,.22) 1px,transparent 1px) 0 0/12px 12px,
    var(--bg-elevated);
  box-shadow:inset 0 0 24px rgba(45,245,194,.10);
  position:relative;
}
.qr-code::after{
  content:"";
  position:absolute;
  inset:34px;
  border-radius:8px;
  border:2px solid rgba(139,108,255,.55);
}
.qr-box span{
  font-size:12.5px;
  color:var(--text-dim);
  text-align:center;
}

/* ===== Footer ===== */
.site-footer{
  position:relative;
  background:var(--bg-elevated);
  padding:64px 0 0;
  margin-top:0;
  z-index:1;
}
.site-footer::before{
  content:"";
  position:absolute;
  top:0;left:0;right:0;
  height:1px;
  background:linear-gradient(90deg,transparent,rgba(45,245,194,.55),rgba(139,108,255,.55),transparent);
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1fr;
  gap:40px;
  padding-bottom:52px;
}
.footer-brand .logo{margin-bottom:16px;}
.footer-brand p{
  font-size:14px;
  line-height:1.85;
  color:var(--text-dim);
  max-width:320px;
}
.footer-social{
  display:flex;
  gap:10px;
  margin-top:20px;
}
.footer-social a{
  width:38px;height:38px;
  display:inline-flex;
  align-items:center;justify-content:center;
  border-radius:10px;
  background:var(--surface);
  border:1px solid var(--border);
  color:var(--text-muted);
  transition:color .2s ease,border-color .2s ease,transform .2s ease;
}
.footer-social a svg{width:17px;height:17px;}
.footer-social a:hover{
  color:var(--primary);
  border-color:rgba(45,245,194,.5);
  transform:translateY(-2px);
}
.footer-col h4{
  font-size:14px;
  font-weight:700;
  letter-spacing:.6px;
  color:var(--text);
  margin-bottom:16px;
}
.footer-col ul{
  display:flex;
  flex-direction:column;
  gap:11px;
}
.footer-col a,
.footer-col span{
  font-size:14px;
  color:var(--text-dim);
  transition:color .2s ease;
}
.footer-col a:hover{color:var(--primary);}
.footer-bottom{
  border-top:1px solid var(--border);
  padding:20px 0 26px;
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  font-size:13px;
  color:var(--text-dim);
}
.footer-bottom a{color:var(--text-dim);}
.footer-bottom a:hover{color:var(--primary);}

/* ===== Responsive ===== */
@media (max-width:1279px){
  :root{--container:100%;}
  .step{grid-template-columns:84px 1fr 280px;}
}
@media (max-width:1023px){
  .main-nav,.nav-cta{display:none;}
  .nav-toggle{display:inline-flex;}
  .step{grid-template-columns:70px 1fr;gap:20px;}
  .step-media{grid-column:1 / -1;margin-top:6px;}
  .timeline::before{left:37px;}
  .check-grid{grid-template-columns:1fr 1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .section{padding:64px 0;}
}
@media (max-width:767px){
  .container{padding:0 18px;}
  .header-inner{height:64px;}
  .cat-hero{padding:26px 0 48px;}
  .hero-meta{gap:20px;}
  .check-grid{grid-template-columns:1fr;}
  .step{padding:20px;grid-template-columns:56px 1fr;}
  .step-num{font-size:32px;}
  .timeline::before{left:33px;}
  .download-band{grid-template-columns:1fr;padding:26px;}
  .qr-box{display:none;}
  .faq-item summary{font-size:16.5px;padding:18px 16px;}
  .faq-body{padding:0 16px 20px;}
  .section-head{margin-bottom:28px;}
  .btn{width:100%;}
  .hero-actions .btn{width:100%;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}
@media (max-width:560px){
  body{font-size:15.5px;}
  .cat-hero h1{font-size:32px;}
  .section-title{font-size:26px;}
  .hero-desc{font-size:15px;}
  .footer-grid{grid-template-columns:1fr;}
  .logo-text{font-size:17px;}
  .brand .logo-text{white-space:nowrap;}
  .download-band h2{font-size:23px;}
  .platform-row{gap:10px;}
  .platform-btn{width:100%;justify-content:center;}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;}
  html{scroll-behavior:auto;}
}

/* roulang page: category2 */
:root{
  --bg:#080B12;
  --bg-elevated:#0F1520;
  --surface:#121A27;
  --surface-2:#172233;
  --border:#263449;
  --border-strong:#354A66;
  --text:#E8EEF7;
  --text-muted:#9AA8BC;
  --text-dim:#6F7F95;
  --primary:#2DF5C2;
  --primary-ink:#04110D;
  --secondary:#8B6CFF;
  --accent:#FF7A4D;
  --star:#FFD166;
  --success:#35D07F;
  --danger:#FF5C7A;
  --focus:#2DF5C2;
  --nav-bg:rgba(8,11,18,.92);
  --radius-card:16px;
  --radius-btn:12px;
  --radius-input:10px;
  --radius-img:12px;
  --shadow-sm:0 10px 30px rgba(0,0,0,.28);
  --shadow-lg:0 16px 44px rgba(0,0,0,.4);
  --glow:0 0 0 1px rgba(45,245,194,.45),0 12px 34px rgba(45,245,194,.14);
  --container:1200px;
  --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:"HarmonyOS Sans SC","PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border-radius:var(--radius-img)}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
svg{display:block}
:focus-visible{outline:2px solid var(--focus);outline-offset:2px;border-radius:6px}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}
.skip-link{position:absolute;left:-9999px;top:0;background:var(--primary);color:var(--primary-ink);padding:10px 16px;border-radius:0 0 10px 0;z-index:999}
.skip-link:focus{left:0}

/* ============ HEADER / NAV ============ */
.site-header{
  position:sticky;top:0;z-index:120;
  background:var(--nav-bg);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--border);
  transition:box-shadow .3s ease,background .3s ease;
}
.site-header::after{
  content:"";position:absolute;left:0;right:0;bottom:-1px;height:1px;
  background:linear-gradient(90deg,transparent,rgba(45,245,194,.55),rgba(139,108,255,.5),transparent);
  opacity:.75;pointer-events:none;
}
.site-header.scrolled{box-shadow:0 12px 32px rgba(0,0,0,.45)}
.header-inner{display:flex;align-items:center;gap:24px;min-height:68px}
.logo{display:inline-flex;align-items:center;gap:10px;flex-shrink:0}
.logo-mark{
  width:34px;height:34px;border-radius:10px;display:grid;place-items:center;
  background:linear-gradient(145deg,rgba(45,245,194,.16),rgba(139,108,255,.16));
  border:1px solid rgba(45,245,194,.28);
  box-shadow:0 0 18px rgba(45,245,194,.12);
}
.logo-mark svg{width:20px;height:20px}
.logo-text{font-size:19px;font-weight:800;letter-spacing:.5px;white-space:nowrap}
.logo-text em{font-style:normal;color:var(--primary)}
.main-nav{display:flex;align-items:center;gap:6px;margin-left:12px}
.nav-link{
  position:relative;display:inline-flex;align-items:center;
  padding:9px 14px;border-radius:10px;
  font-size:15px;font-weight:500;color:var(--text-muted);
  transition:color .2s ease,background .2s ease;
}
.nav-link::after{
  content:"";position:absolute;left:12px;right:12px;bottom:3px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--primary),var(--secondary));
  opacity:0;transform:scaleX(.4);transform-origin:left;transition:opacity .25s ease,transform .25s ease;
}
.nav-link:hover{color:var(--primary);background:rgba(45,245,194,.05)}
.nav-link:hover::after{opacity:.6;transform:scaleX(1)}
.nav-link.active{color:var(--primary);background:rgba(45,245,194,.08);font-weight:600}
.nav-link.active::after{opacity:1;transform:scaleX(1);box-shadow:0 0 12px rgba(45,245,194,.65)}
.header-actions{margin-left:auto;display:flex;align-items:center;gap:12px}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:50px;padding:0 26px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:700;letter-spacing:.3px;
  transition:transform .18s ease,box-shadow .25s ease,background .2s ease,color .2s ease,border-color .2s ease,filter .2s ease;
  white-space:nowrap;
}
.btn-primary{
  background:var(--accent);color:#1A0A02;border:1px solid rgba(255,122,77,.7);
  box-shadow:0 10px 26px rgba(255,122,77,.24);
}
.btn-primary:hover{filter:brightness(1.08);transform:translateY(-1px);box-shadow:0 14px 34px rgba(255,122,77,.34)}
.btn-primary:active{transform:translateY(1px);box-shadow:0 6px 16px rgba(255,122,77,.28)}
.btn-ghost{
  background:rgba(45,245,194,.04);color:var(--primary);
  border:1px solid rgba(45,245,194,.45);
}
.btn-ghost:hover{background:rgba(45,245,194,.1);box-shadow:0 0 0 1px rgba(45,245,194,.35),0 10px 26px rgba(45,245,194,.16);transform:translateY(-1px)}
.btn-ghost:active{transform:translateY(1px)}
.btn-sm{height:42px;padding:0 18px;font-size:14px}
.btn:disabled,.btn.is-disabled{opacity:.45;cursor:not-allowed;transform:none;box-shadow:none}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;
  border:1px solid var(--border);background:var(--surface);
  align-items:center;justify-content:center;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--text);border-radius:2px;position:relative;transition:.25s}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--text);border-radius:2px;transition:.25s;
}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}
.nav-toggle[aria-expanded="true"] span{background:transparent}
.nav-toggle[aria-expanded="true"] span::before{top:0;transform:rotate(45deg);background:var(--primary)}
.nav-toggle[aria-expanded="true"] span::after{top:0;transform:rotate(-45deg);background:var(--primary)}

/* Drawer */
.drawer-overlay{
  position:fixed;inset:0;background:rgba(0,0,0,.6);
  opacity:0;pointer-events:none;transition:opacity .3s ease;z-index:190;
}
.drawer-overlay.show{opacity:1;pointer-events:auto}
.nav-drawer{
  position:fixed;top:0;right:0;z-index:200;
  width:84%;max-width:360px;height:100%;
  background:var(--bg-elevated);border-left:1px solid var(--border);
  transform:translateX(100%);transition:transform .32s cubic-bezier(.4,0,.2,1);
  display:flex;flex-direction:column;padding:22px;
}
.nav-drawer.open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:26px}
.drawer-close{
  width:40px;height:40px;border-radius:10px;border:1px solid var(--border);
  background:var(--surface);display:grid;place-items:center;font-size:20px;color:var(--text-muted);
}
.drawer-close:hover{color:var(--primary);border-color:rgba(45,245,194,.45)}
.drawer-nav{display:flex;flex-direction:column;gap:6px}
.drawer-nav a{
  padding:14px 14px;border-radius:12px;font-size:17px;font-weight:600;color:var(--text-muted);
  border:1px solid transparent;transition:.2s;
}
.drawer-nav a:hover{color:var(--primary);background:rgba(45,245,194,.06)}
.drawer-nav a.active{color:var(--primary);background:rgba(45,245,194,.08);border-color:rgba(45,245,194,.3)}
.drawer-foot{margin-top:auto;padding-top:20px}
.drawer-foot .btn{width:100%}
body.lock{overflow:hidden}

/* ============ HERO ============ */
.cat-hero{
  position:relative;overflow:hidden;
  padding:58px 0 72px;
  border-bottom:1px solid var(--border);
  background:
    radial-gradient(900px 420px at 82% -10%,rgba(139,108,255,.16),transparent 65%),
    radial-gradient(720px 380px at 6% 10%,rgba(45,245,194,.13),transparent 60%),
    linear-gradient(180deg,#0A0F18,#080B12);
}
.cat-hero::before{
  content:"";position:absolute;inset:0;
  background-image:url(/assets/images/backpic/back-2.webp);
  background-size:cover;background-position:center;
  opacity:.14;pointer-events:none;filter:saturate(.9);
}
.cat-hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:radial-gradient(rgba(45,245,194,.13) 1px,transparent 1px);
  background-size:24px 24px;
  opacity:.5;
  mask-image:linear-gradient(110deg,rgba(0,0,0,.9),transparent 62%);
  -webkit-mask-image:linear-gradient(110deg,rgba(0,0,0,.9),transparent 62%);
}
.hero-grid{
  position:relative;z-index:2;
  display:grid;grid-template-columns:1.02fr .98fr;gap:52px;align-items:center;
}
.breadcrumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--text-dim);margin-bottom:18px;flex-wrap:wrap}
.breadcrumb a{color:var(--text-muted);transition:color .2s}
.breadcrumb a:hover{color:var(--primary)}
.breadcrumb span.sep{color:var(--border-strong)}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;font-weight:700;letter-spacing:1.6px;text-transform:uppercase;
  color:var(--primary);margin-bottom:14px;
}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:2px;background:var(--primary);box-shadow:0 0 10px rgba(45,245,194,.9)}
.cat-hero h1{
  font-size:50px;line-height:1.15;font-weight:800;letter-spacing:.5px;margin-bottom:18px;
}
.cat-hero h1 .hl{
  background:linear-gradient(96deg,var(--primary),#7DE9CE 45%,var(--secondary));
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero-sub{font-size:17px;line-height:1.75;color:var(--text-muted);max-width:560px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px}
.hero-badges{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px}
.chip{
  display:inline-flex;align-items:center;gap:7px;
  padding:6px 13px;border-radius:999px;
  border:1px solid var(--border);background:rgba(18,26,39,.75);
  font-size:12.5px;color:var(--text-muted);
}
.chip i{width:6px;height:6px;border-radius:50%;background:var(--primary);box-shadow:0 0 8px var(--primary);font-style:normal}
.chip b{color:var(--text);font-weight:600}

/* hero compare visual */
.hero-visual{position:relative;min-height:360px}
.shot{
  position:relative;border-radius:22px;overflow:hidden;
  border:1px solid var(--border-strong);background:var(--surface);
  box-shadow:var(--shadow-lg);
}
.shot img{width:100%;height:100%;object-fit:cover;border-radius:0}
.shot-main{width:88%;margin-left:auto;aspect-ratio:16/11}
.shot-main .shot-tag{position:absolute;left:14px;top:14px}
.shot-float{
  position:absolute;left:-6px;bottom:-26px;width:56%;aspect-ratio:16/11;
  border-color:rgba(45,245,194,.45);
  box-shadow:0 18px 44px rgba(0,0,0,.55),0 0 0 1px rgba(45,245,194,.25);
}
.shot-tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 11px;border-radius:999px;
  background:rgba(8,11,18,.82);border:1px solid rgba(45,245,194,.4);
  font-size:11.5px;font-weight:600;color:var(--primary);backdrop-filter:blur(6px);
}
.hero-visual .glow-dot{
  position:absolute;right:6px;top:6px;width:9px;height:9px;border-radius:50%;
  background:var(--primary);box-shadow:0 0 14px rgba(45,245,194,.9);
}

/* ============ SECTIONS ============ */
.section{padding:84px 0;position:relative}
.section.tight{padding:64px 0}
.section-alt{background:linear-gradient(180deg,#0A0F18,#0B1119);border-top:1px solid var(--border);border-bottom:1px solid var(--border)}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:28px;margin-bottom:38px;flex-wrap:wrap}
.section-head h2{font-size:33px;line-height:1.28;font-weight:700}
.section-head p{margin-top:12px;color:var(--text-muted);font-size:15px;max-width:660px}
.link-more{
  display:inline-flex;align-items:center;gap:7px;
  font-size:14px;font-weight:600;color:var(--primary);
  border-bottom:1px solid rgba(45,245,194,.35);padding-bottom:2px;transition:.2s;
}
.link-more:hover{color:#7BFFDD;border-color:var(--primary);transform:translateX(2px)}

/* Feature asymmetric grid */
.feature-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.fcard{
  position:relative;display:flex;flex-direction:column;gap:12px;
  padding:26px;border-radius:var(--radius-card);
  background:linear-gradient(170deg,var(--surface),#0E1622);
  border:1px solid var(--border);
  transition:transform .22s ease,border-color .22s ease,box-shadow .25s ease;
}
.fcard:hover{transform:translateY(-3px);border-color:rgba(45,245,194,.55);box-shadow:var(--shadow-lg),0 0 0 1px rgba(45,245,194,.18)}
.fcard.wide{grid-column:span 2;padding:0;overflow:hidden;gap:0}
.fcard.wide .fcard-media{position:relative;aspect-ratio:16/8;overflow:hidden}
.fcard.wide .fcard-media img{width:100%;height:100%;object-fit:cover;border-radius:0;transition:transform .5s ease}
.fcard.wide:hover .fcard-media img{transform:scale(1.035)}
.fcard.wide .fcard-body{padding:24px 26px 26px}
.fcard-icon{
  width:44px;height:44px;border-radius:12px;display:grid;place-items:center;
  background:rgba(45,245,194,.08);border:1px solid rgba(45,245,194,.28);color:var(--primary);
  flex-shrink:0;
}
.fcard-icon.violet{background:rgba(139,108,255,.1);border-color:rgba(139,108,255,.32);color:#B7A5FF}
.fcard-icon svg{width:21px;height:21px}
.fcard h3{font-size:19px;font-weight:700;line-height:1.4}
.fcard p{font-size:14.5px;color:var(--text-muted);line-height:1.72}
.fcard .fcard-link{
  margin-top:auto;font-size:13.5px;font-weight:600;color:var(--primary);
  display:inline-flex;align-items:center;gap:6px;transition:gap .2s ease,color .2s ease;
}
.fcard .fcard-link:hover{gap:10px;color:#7BFFDD}

/* Compare block */
.compare-wrap{display:grid;grid-template-columns:1fr 1fr;gap:22px}
.compare-card{
  border-radius:var(--radius-card);border:1px solid var(--border);
  background:var(--surface);overflow:hidden;
  transition:border-color .25s ease,box-shadow .25s ease;
}
.compare-card:hover{border-color:rgba(45,245,194,.45);box-shadow:var(--shadow-lg)}
.compare-card .cc-media{position:relative;aspect-ratio:16/10;overflow:hidden;background:var(--surface-2)}
.compare-card .cc-media img{width:100%;height:100%;object-fit:cover;border-radius:0}
.compare-card .cc-body{padding:22px 24px 24px}
.compare-card h3{font-size:20px;font-weight:700;margin-bottom:8px}
.compare-card p{font-size:14.5px;color:var(--text-muted)}
.cc-tag{
  position:absolute;left:14px;top:14px;
  padding:5px 11px;border-radius:999px;font-size:11.5px;font-weight:600;
  background:rgba(8,11,18,.82);color:var(--primary);border:1px solid rgba(45,245,194,.4);
}
.cc-tag.violet{color:#C3B4FF;border-color:rgba(139,108,255,.45)}
.diff-list{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:26px}
.diff-item{
  padding:20px 22px;border-radius:14px;background:var(--bg-elevated);
  border:1px solid var(--border);border-left:2px solid rgba(45,245,194,.5);
}
.diff-item h4{font-size:15.5px;font-weight:700;margin-bottom:6px;color:var(--text)}
.diff-item span{font-size:13.5px;color:var(--text-muted);line-height:1.7}

/* Path list (definition rows) */
.path-list{
  border-radius:var(--radius-card);border:1px solid var(--border);
  background:var(--bg-elevated);overflow:hidden;
}
.path-row{
  display:grid;grid-template-columns:230px 1fr auto;gap:20px;align-items:center;
  padding:20px 26px;border-bottom:1px solid var(--border);
  transition:background .2s ease;
}
.path-row:last-child{border-bottom:0}
.path-row:hover{background:rgba(45,245,194,.04)}
.path-row dt{display:flex;align-items:center;gap:10px;font-size:15.5px;font-weight:700}
.path-row dt .dot{width:7px;height:7px;border-radius:2px;background:var(--primary);box-shadow:0 0 8px rgba(45,245,194,.8);flex-shrink:0}
.path-row dd{margin:0;font-size:14.5px;color:var(--text-muted);line-height:1.7}
.path-row .path-cat{
  font-size:12px;color:var(--text-dim);border:1px solid var(--border);
  padding:4px 10px;border-radius:999px;white-space:nowrap;
}
dl.path-list{margin:0}

/* Reviews */
.review-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.review-card{
  padding:24px;border-radius:var(--radius-card);
  background:var(--surface);border:1px solid var(--border);
  border-left:2px solid rgba(139,108,255,.55);
  display:flex;flex-direction:column;gap:12px;
  transition:transform .22s ease,border-color .22s ease,box-shadow .25s ease;
}
.review-card:hover{transform:translateY(-3px);border-color:rgba(45,245,194,.4);box-shadow:var(--shadow-lg)}
.stars{color:var(--star);letter-spacing:3px;font-size:14px}
.review-card p{font-size:14.8px;color:var(--text-muted);line-height:1.78}
.review-meta{display:flex;align-items:center;gap:10px;margin-top:auto;padding-top:8px}
.avatar{
  width:34px;height:34px;border-radius:50%;display:grid;place-items:center;
  background:linear-gradient(145deg,rgba(45,245,194,.2),rgba(139,108,255,.22));
  font-size:13px;font-weight:700;color:#CDFFF2;border:1px solid rgba(45,245,194,.3);
}
.review-meta .name{font-size:13.5px;font-weight:600}
.review-meta .plat{font-size:11.5px;color:var(--text-dim);border:1px solid var(--border);padding:2px 8px;border-radius:999px}

/* FAQ */
.faq-wrap{max-width:900px;margin:0 auto}
.faq-item{border-bottom:1px solid var(--border);transition:background .2s ease}
.faq-item:first-child{border-top:1px solid var(--border)}
.faq-item.open{background:var(--surface);border-left:2px solid var(--primary)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:22px 20px;text-align:left;font-size:18px;font-weight:600;line-height:1.5;
  transition:color .2s ease;
}
.faq-q:hover{color:var(--primary)}
.faq-sign{position:relative;width:18px;height:18px;flex-shrink:0}
.faq-sign::before,.faq-sign::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--primary);border-radius:2px;
  transform:translate(-50%,-50%);transition:transform .28s ease,opacity .28s ease;
  box-shadow:0 0 8px rgba(45,245,194,.55);
}
.faq-sign::before{width:14px;height:2px}
.faq-sign::after{width:2px;height:14px}
.faq-item.open .faq-sign::after{transform:translate(-50%,-50%) rotate(90deg);opacity:0}
.faq-a{display:grid;grid-template-rows:0fr;transition:grid-template-rows .3s ease}
.faq-item.open .faq-a{grid-template-rows:1fr}
.faq-a>div{overflow:hidden}
.faq-a p{padding:0 20px 22px;font-size:15px;line-height:1.8;color:var(--text-muted);max-width:800px}

/* Download band */
.download-band{
  position:relative;overflow:hidden;
  border-radius:22px;border:1px solid var(--border-strong);
  background:linear-gradient(140deg,#131B2A,#0E1521 60%,#12202A);
  padding:34px;display:grid;grid-template-columns:1fr auto;gap:32px;align-items:center;
}
.download-band::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:radial-gradient(520px 260px at 88% 20%,rgba(45,245,194,.16),transparent 65%),
             radial-gradient(420px 220px at 8% 90%,rgba(139,108,255,.14),transparent 60%);
}
.db-main{position:relative;z-index:2;display:flex;flex-wrap:wrap;gap:30px;align-items:center;justify-content:space-between}
.db-info h3{font-size:23px;font-weight:700;margin-bottom:8px}
.db-info p{font-size:14px;color:var(--text-muted)}
.db-stats{display:flex;flex-wrap:wrap;gap:22px;margin-top:16px}
.db-stats div span{display:block;font-size:11.5px;color:var(--text-dim);letter-spacing:.4px}
.db-stats div strong{font-size:14.5px;font-weight:700;color:var(--text)}
.db-actions{position:relative;z-index:2;display:flex;flex-direction:column;gap:12px;align-items:flex-start}
.platform-row{display:flex;flex-wrap:wrap;gap:10px}
.platform-btn{
  display:inline-flex;align-items:center;gap:8px;height:40px;padding:0 14px;
  border-radius:10px;background:var(--surface-2);border:1px solid var(--border);
  font-size:13px;color:var(--text-muted);transition:.2s;
}
.platform-btn svg{width:15px;height:15px}
.platform-btn:hover{color:var(--primary);border-color:rgba(45,245,194,.5);background:rgba(45,245,194,.06)}
.qr{
  width:120px;height:120px;border-radius:12px;position:relative;
  background-color:#DDE6F2;
  background-image:
    linear-gradient(45deg,#0B1220 25%,transparent 25%,transparent 75%,#0B1220 75%),
    linear-gradient(45deg,#0B1220 25%,transparent 25%,transparent 75%,#0B1220 75%);
  background-size:13px 13px;
  background-position:0 0,6.5px 6.5px;
  border:4px solid #DDE6F2;
  box-shadow:0 0 0 1px var(--border),0 14px 30px rgba(0,0,0,.4);
  flex-shrink:0;
}
.qr::after{
  content:"九游在线";position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);
  background:#0B1220;color:var(--primary);font-size:10px;letter-spacing:.5px;
  padding:3px 6px;border-radius:4px;white-space:nowrap;
}
.qr-note{font-size:11.5px;color:var(--text-dim);text-align:center;margin-top:8px}

/* ============ FOOTER ============ */
.site-footer{
  position:relative;background:#070A10;border-top:1px solid var(--border);
  padding:60px 0 0;margin-top:0;
}
.site-footer::before{
  content:"";position:absolute;left:0;right:0;top:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(45,245,194,.5),rgba(139,108,255,.45),transparent);
}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px;padding-bottom:44px}
.footer-brand p{font-size:14px;color:var(--text-muted);line-height:1.8;margin-top:16px;max-width:330px}
.footer-social{display:flex;gap:10px;margin-top:18px}
.footer-social a{
  width:38px;height:38px;border-radius:10px;display:grid;place-items:center;
  border:1px solid var(--border);background:var(--surface);color:var(--text-muted);transition:.2s;
}
.footer-social a svg{width:17px;height:17px}
.footer-social a:hover{color:var(--primary);border-color:rgba(45,245,194,.5);background:rgba(45,245,194,.07)}
.footer-col h4{font-size:14px;font-weight:700;letter-spacing:.6px;margin-bottom:16px;color:var(--text)}
.footer-col li{margin-bottom:10px}
.footer-col a,.footer-col span{font-size:14px;color:var(--text-muted);transition:color .2s ease}
.footer-col a:hover{color:var(--primary)}
.footer-bottom{
  border-top:1px solid var(--border);padding:20px 0 26px;
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:12.5px;color:var(--text-dim);
}

/* Sticky mobile download */
.mobile-bar{
  display:none;position:fixed;left:0;right:0;bottom:0;z-index:110;
  height:64px;padding:0 16px;gap:12px;align-items:center;justify-content:space-between;
  background:rgba(9,13,20,.96);backdrop-filter:blur(12px);
  border-top:1px solid var(--border);
}
.mobile-bar .mb-text{font-size:12.5px;color:var(--text-muted);line-height:1.4}
.mobile-bar .mb-text b{display:block;color:var(--text);font-size:13.5px}
.mobile-bar .btn{height:42px;padding:0 18px;font-size:14px}

/* ============ RESPONSIVE ============ */
@media (max-width:1279px){
  .container{max-width:100%;padding:0 24px}
  .cat-hero h1{font-size:44px}
  .hero-grid{gap:38px}
}
@media (max-width:1023px){
  .main-nav{display:none}
  .nav-toggle{display:inline-flex}
  .header-actions .btn-primary{display:none}
  .hero-grid{grid-template-columns:1fr;gap:44px}
  .hero-visual{min-height:auto;max-width:560px}
  .shot-main{width:100%}
  .shot-float{position:relative;left:0;bottom:0;width:70%;margin:-40px 0 0 0}
  .feature-grid{grid-template-columns:repeat(2,1fr)}
  .fcard.wide{grid-column:span 2}
  .review-grid{grid-template-columns:repeat(2,1fr)}
  .diff-list{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .download-band{grid-template-columns:1fr;padding:28px}
}
@media (max-width:767px){
  .section{padding:60px 0}
  .cat-hero{padding:40px 0 54px}
  .cat-hero h1{font-size:34px;line-height:1.22}
  .hero-sub{font-size:15.5px}
  .hero-actions .btn{flex:1 1 100%}
  .section-head h2{font-size:27px}
  .compare-wrap{grid-template-columns:1fr}
  .review-grid{grid-template-columns:1fr}
  .path-row{grid-template-columns:1fr;gap:8px;padding:18px 20px}
  .path-row .path-cat{justify-self:start}
  .faq-q{font-size:16.5px;padding:18px 14px}
  .faq-a p{padding:0 14px 20px}
  .faq-item.open{border-left-width:2px}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column;gap:8px}
  .mobile-bar{display:flex}
  body{padding-bottom:64px}
  .qr{width:88px;height:88px;background-size:10px 10px;background-position:0 0,5px 5px}
  .db-main{gap:22px}
}
@media (max-width:560px){
  .container{padding:0 16px}
  .cat-hero h1{font-size:31px}
  .feature-grid{grid-template-columns:1fr}
  .fcard.wide{grid-column:span 1}
  .logo-text{font-size:17px}
  .shot-float{width:78%;margin-top:-30px}
  .db-actions{width:100%}
  .qr{display:none}
  .qr-note{display:none}
}