/* roulang page: index */
:root{
  --c-bg:#050A14;
  --c-surface:#0B1524;
  --c-surface-2:#122236;
  --c-line:rgba(126,178,255,.16);
  --c-primary:#2F6BFF;
  --c-primary-700:#1B47C9;
  --c-accent:#00E3C2;
  --c-hot:#FF8A3D;
  --c-text:#E8F1FF;
  --c-text-2:#9FB4CE;
  --c-text-3:#6B8099;
  --ok:#22C55E;
  --warn:#F5C451;
  --err:#FF5A5A;
  --r-card:16px;
  --r-panel:20px;
  --r-btn:12px;
  --r-img:14px;
  --sh-card:0 10px 30px -12px rgba(0,0,0,.72);
  --sh-glass:inset 0 1px 0 rgba(255,255,255,.06),0 10px 30px -12px rgba(0,0,0,.72);
  --sh-glow:0 0 0 1px rgba(0,227,194,.35),0 10px 28px -8px rgba(0,227,194,.45);
  --t:180ms cubic-bezier(.2,.8,.2,1);
  --container:1200px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  padding-top:64px;
  font-family:"HarmonyOS Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",Inter,system-ui,sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--c-text);
  background-color:var(--c-bg);
  background-image:
    radial-gradient(900px 600px at 88% -8%, rgba(47,107,255,.12), transparent 62%),
    radial-gradient(820px 620px at -12% 104%, rgba(0,227,194,.09), transparent 62%),
    linear-gradient(rgba(126,178,255,.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(126,178,255,.03) 1px, transparent 1px);
  background-size:auto,auto,24px 24px,24px 24px;
  background-attachment:fixed,fixed,scroll,scroll;
  overflow-x:hidden;
}
img{max-width:100%;display:block;object-fit:cover}
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{margin:0;font-weight:700;letter-spacing:-.02em;line-height:1.3}
p{margin:0}
.num,time,.mono{font-variant-numeric:tabular-nums;font-family:Inter,"HarmonyOS Sans SC",system-ui,sans-serif}
:focus-visible{outline:2px solid var(--c-accent);outline-offset:2px;border-radius:4px}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}
.section{padding:88px 0}
.section-alt{background:linear-gradient(180deg,rgba(11,21,36,.72),rgba(5,10,20,0))}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:36px;flex-wrap:wrap}
.section-head h2{font-size:32px}
.section-sub{color:var(--c-text-2);font-size:15px;margin-top:10px;max-width:620px}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:12px;letter-spacing:.14em;color:var(--c-accent);text-transform:uppercase;margin-bottom:14px}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--c-accent);display:inline-block}

/* ============ Header / Nav ============ */
.site-header{position:fixed;top:0;left:0;right:0;z-index:120;height:64px;display:flex;align-items:center;
  background:rgba(5,10,20,.78);backdrop-filter:blur(14px) saturate(140%);-webkit-backdrop-filter:blur(14px) saturate(140%);
  border-bottom:1px solid rgba(126,178,255,.12);transition:height var(--t),background var(--t),box-shadow var(--t)}
.site-header.is-scrolled{height:56px;background:rgba(5,10,20,.94);box-shadow:0 1px 0 rgba(0,227,194,.22),0 12px 34px -22px rgba(0,227,194,.6)}
.header-inner{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px;display:flex;align-items:center;gap:28px}
.logo{display:flex;align-items:center;gap:10px;min-width:120px;font-weight:700;font-size:19px;letter-spacing:.02em;white-space:nowrap}
.logo-mark{width:30px;height:30px;flex:0 0 30px;position:relative}
.logo-mark svg{width:100%;height:100%;display:block}
.logo-text{background:linear-gradient(92deg,#E8F1FF 40%,var(--c-accent));-webkit-background-clip:text;background-clip:text;color:transparent}
.main-nav{display:flex;align-items:center;gap:4px;margin-left:8px}
.main-nav a{position:relative;display:inline-flex;align-items:center;height:40px;padding:0 14px;border-radius:10px;font-size:15px;color:var(--c-text-2);transition:color var(--t),background var(--t)}
.main-nav a:hover{color:var(--c-text);background:rgba(126,178,255,.08)}
.main-nav a.active{color:var(--c-text)}
.main-nav a.active::after{content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;background:var(--c-accent);border-radius:2px;box-shadow:0 0 10px rgba(0,227,194,.7)}
.header-right{margin-left:auto;display:flex;align-items:center;gap:12px}

/* Mega */
.mega{position:relative}
.mega-trigger{display:inline-flex;align-items:center;gap:7px;height:40px;padding:0 16px;border-radius:10px;font-size:15px;
  color:var(--c-text-2);border:1px solid rgba(126,178,255,.18);background:rgba(255,255,255,.04);transition:all var(--t)}
.mega-trigger:hover,.mega:hover .mega-trigger,.mega:focus-within .mega-trigger{color:var(--c-text);border-color:rgba(0,227,194,.4);box-shadow:0 0 0 1px rgba(0,227,194,.18)}
.mega-trigger i{display:inline-block;width:0;height:0;border-left:4px solid transparent;border-right:4px solid transparent;border-top:5px solid currentColor;transition:transform var(--t)}
.mega:hover .mega-trigger i,.mega:focus-within .mega-trigger i{transform:rotate(180deg)}
.mega-panel{position:absolute;right:0;top:calc(100% + 14px);width:720px;padding:24px;border-radius:var(--r-panel);
  background:rgba(11,21,36,.96);backdrop-filter:blur(16px) saturate(140%);border:1px solid rgba(0,227,194,.22);
  box-shadow:0 30px 60px -30px rgba(0,0,0,.9);display:grid;grid-template-columns:1.1fr 1.3fr 1fr;gap:22px;
  opacity:0;visibility:hidden;transform:translateY(6px);transition:opacity 160ms ease,transform 160ms ease,visibility 160ms}
.mega:hover .mega-panel,.mega:focus-within .mega-panel{opacity:1;visibility:visible;transform:translateY(0)}
.mega-col h4{font-size:12px;letter-spacing:.12em;color:var(--c-accent);text-transform:uppercase;margin-bottom:12px;font-weight:600}
.mega-col ul{display:grid;gap:2px}
.mega-col ul a{display:flex;align-items:center;gap:8px;padding:8px 10px;border-radius:10px;font-size:14px;color:var(--c-text-2);transition:all var(--t)}
.mega-col ul a:hover{color:var(--c-text);background:rgba(0,227,194,.09);transform:translateX(2px)}
.mega-dot{width:6px;height:6px;border-radius:50%;background:var(--c-accent);flex:0 0 6px;opacity:.75}
.mega-post{display:block;padding:9px 0;border-bottom:1px dashed rgba(126,178,255,.14)}
.mega-post:last-child{border-bottom:0}
.mega-post span{display:block;font-size:14px;color:var(--c-text);line-height:1.5;transition:color var(--t)}
.mega-post:hover span{color:var(--c-accent)}
.mega-post em{font-style:normal;font-size:12px;color:var(--c-text-3);font-variant-numeric:tabular-nums}
.mega-card{display:block;padding:16px;border-radius:14px;background:linear-gradient(150deg,rgba(0,227,194,.14),rgba(47,107,255,.12));border:1px solid rgba(0,227,194,.26);margin-bottom:12px;transition:all var(--t)}
.mega-card:hover{transform:translateY(-2px);box-shadow:var(--sh-glow)}
.mega-card strong{display:block;font-size:15px;margin-bottom:4px}
.mega-card small{color:var(--c-text-2);font-size:12.5px;line-height:1.6}
.mega-card .arrow{display:inline-block;margin-top:8px;color:var(--c-accent);font-size:13px}
.btn-contact{display:flex;align-items:center;justify-content:space-between;gap:8px;padding:12px 14px;border-radius:12px;background:rgba(255,255,255,.045);border:1px solid rgba(255,255,255,.08);font-size:13.5px;color:var(--c-text-2);transition:all var(--t)}
.btn-contact:hover{border-color:rgba(0,227,194,.35);color:var(--c-text)}

/* Mobile drawer */
.nav-toggle{display:none}
.hamburger{display:none;width:44px;height:44px;border-radius:12px;align-items:center;justify-content:center;border:1px solid rgba(126,178,255,.2);background:rgba(255,255,255,.04)}
.hamburger span{display:block;width:18px;height:2px;background:var(--c-text);border-radius:2px;position:relative}
.hamburger span::before,.hamburger span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:var(--c-text);border-radius:2px}
.hamburger span::before{top:-6px}
.hamburger span::after{top:6px}
.drawer{position:fixed;inset:0 0 auto 0;top:64px;height:88vh;overflow-y:auto;z-index:110;padding:20px 20px 96px;
  background:rgba(5,10,20,.98);backdrop-filter:blur(16px);border-top:1px solid rgba(126,178,255,.14);
  transform:translateX(102%);transition:transform 220ms cubic-bezier(.2,.8,.2,1)}
.nav-toggle:checked ~ .drawer{transform:translateX(0)}
.drawer a.drawer-link{display:flex;align-items:center;justify-content:space-between;padding:16px 4px;font-size:16px;border-bottom:1px solid rgba(126,178,255,.12)}
.drawer a.drawer-link.active{color:var(--c-accent)}
.drawer-foot{position:fixed;left:20px;right:20px;bottom:20px;display:flex;gap:10px}

/* ============ Buttons ============ */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:44px;padding:0 22px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;letter-spacing:.01em;transition:all var(--t);white-space:nowrap}
.btn-primary{background:linear-gradient(120deg,var(--c-accent),#12d8b0);color:#04121A;box-shadow:0 0 0 1px rgba(0,227,194,.4),0 12px 30px -12px rgba(0,227,194,.75)}
.btn-primary:hover{filter:brightness(1.08);box-shadow:0 0 0 1px rgba(0,227,194,.6),0 16px 38px -12px rgba(0,227,194,.85)}
.btn-primary:active{transform:translateY(1px)}
.btn-ghost{background:rgba(255,255,255,.045);border:1px solid rgba(255,255,255,.12);color:var(--c-text);backdrop-filter:blur(10px)}
.btn-ghost:hover{border-color:rgba(0,227,194,.45);color:#fff;transform:translateY(-1px)}
.btn-ghost:active{transform:translateY(1px)}
.btn-text{color:var(--c-accent);padding:0;min-height:auto;font-weight:600;font-size:14.5px}
.btn-text i{font-style:normal;transition:transform var(--t);display:inline-block;margin-left:4px}
.btn-text:hover i{transform:translateX(3px)}
.btn[disabled],.btn.is-disabled{opacity:.4;pointer-events:none}
.btn-sm{min-height:38px;padding:0 16px;font-size:14px;border-radius:10px}

/* ============ Hero ============ */
.hero{position:relative;overflow:hidden;padding:80px 0 72px;background-image:linear-gradient(115deg,rgba(5,10,20,.88) 24%,rgba(5,10,20,.72) 100%),url("/assets/images/backpic/back-1.png");background-size:cover;background-position:center}
.hero::after{content:"";position:absolute;left:0;right:0;bottom:0;height:180px;background:linear-gradient(180deg,transparent,rgba(5,10,20,.95))}
.hero-grid{position:relative;z-index:2;display:grid;grid-template-columns:6fr 6fr;gap:48px;align-items:center}
.hero h1{font-size:44px;line-height:1.2;letter-spacing:-.025em}
.hero h1 .hl{display:block;color:var(--c-accent);text-shadow:0 0 28px rgba(0,227,194,.45)}
.hero-sub{margin-top:20px;color:var(--c-text-2);font-size:17px;max-width:520px}
.hero-actions{margin-top:30px;display:flex;flex-wrap:wrap;gap:12px}
.hero-metrics{margin-top:34px;display:flex;flex-wrap:wrap;gap:28px;padding-top:22px;border-top:1px solid var(--c-line)}
.hero-metrics div{min-width:96px}
.hero-metrics dt{font-size:12px;color:var(--c-text-3);letter-spacing:.08em}
.hero-metrics dd{margin:4px 0 0;font-size:19px;font-weight:600;color:var(--c-accent);font-variant-numeric:tabular-nums}
.hero-device{position:relative;display:flex;justify-content:center;perspective:1200px}
.phone{width:298px;max-width:100%;border-radius:34px;padding:12px;background:linear-gradient(160deg,rgba(18,34,54,.95),rgba(5,10,20,.95));
  border:1px solid rgba(0,227,194,.4);box-shadow:var(--sh-glow),0 40px 70px -40px rgba(0,0,0,.95);
  transform:rotateY(-11deg) rotateX(4deg) translateY(-6px);transition:transform 420ms cubic-bezier(.2,.8,.2,1)}
.hero-device:hover .phone{transform:rotateY(-4deg) rotateX(2deg) translateY(-12px)}
.phone-bar{height:20px;display:flex;align-items:center;justify-content:center}
.phone-bar em{width:56px;height:5px;border-radius:999px;background:rgba(126,178,255,.35);display:block}
.phone img{border-radius:24px;aspect-ratio:9/17;width:100%}
.hero-badge{position:absolute;right:6%;bottom:12%;padding:10px 14px;border-radius:12px;background:rgba(11,21,36,.9);
  border:1px solid rgba(0,227,194,.3);font-size:13px;color:var(--c-text-2);box-shadow:var(--sh-card);backdrop-filter:blur(10px)}
.hero-badge b{color:var(--c-hot);font-variant-numeric:tabular-nums}

/* ============ Value strip ============ */
.value-strip{display:grid;grid-template-columns:repeat(4,1fr);}
.value-item{padding:6px 26px;position:relative}
.value-item + .value-item{border-left:1px solid var(--c-line)}
.value-item:first-child{padding-left:0}
.value-item:last-child{padding-right:0}
.value-icon{width:40px;height:40px;border-radius:12px;display:flex;align-items:center;justify-content:center;
  background:rgba(0,227,194,.1);border:1px solid rgba(0,227,194,.28);color:var(--c-accent);margin-bottom:14px}
.value-item h3{font-size:17px;margin-bottom:6px}
.value-item p{font-size:14px;color:var(--c-text-2);line-height:1.7}

/* ============ Cards ============ */
.card{background:linear-gradient(160deg,rgba(18,34,54,.92),rgba(11,21,36,.92));border:1px solid var(--c-line);border-radius:var(--r-card);
  box-shadow:var(--sh-glass);transition:transform var(--t),border-color var(--t),box-shadow var(--t)}
.card:hover{transform:translateY(-4px);border-color:rgba(0,227,194,.3);box-shadow:0 0 0 1px rgba(0,227,194,.18),var(--sh-card)}
.badge{display:inline-flex;align-items:center;height:24px;padding:0 12px;border-radius:999px;font-size:12px;line-height:1;
  background:rgba(0,227,194,.1);color:var(--c-accent);border:1px solid rgba(0,227,194,.22)}
.badge-hot{background:rgba(255,138,61,.12);color:var(--c-hot);border-color:rgba(255,138,61,.3)}
.imgwrap{overflow:hidden;border-radius:var(--r-img);position:relative;background:#0B1524}
.imgwrap::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(5,10,20,.08),rgba(5,10,20,.55))}
.imgwrap img{width:100%;height:100%;transition:transform 420ms cubic-bezier(.2,.8,.2,1)}
.card:hover .imgwrap img{transform:scale(1.04)}

/* ============ Shot rail ============ */
.rail-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:28px;flex-wrap:wrap}
.rail-nav{display:flex;gap:10px}
.rail-btn{width:44px;height:44px;border-radius:12px;border:1px solid rgba(126,178,255,.22);background:rgba(255,255,255,.04);
  display:flex;align-items:center;justify-content:center;font-size:20px;color:var(--c-text-2);transition:all var(--t)}
.rail-btn:hover{border-color:rgba(0,227,194,.45);color:var(--c-accent)}
.rail{display:flex;gap:20px;overflow-x:auto;scroll-snap-type:x mandatory;padding:4px 24px 22px;margin:0 -24px;scrollbar-width:thin}
.rail::-webkit-scrollbar{height:6px}
.rail::-webkit-scrollbar-thumb{background:rgba(126,178,255,.25);border-radius:999px}
.shot{flex:0 0 280px;scroll-snap-align:start;padding:16px;border-radius:var(--r-card);background:linear-gradient(170deg,rgba(18,34,54,.94),rgba(11,21,36,.94));
  border:1px solid var(--c-line);box-shadow:var(--sh-card);transition:transform var(--t),border-color var(--t)}
.shot:hover{transform:translateY(-4px);border-color:rgba(0,227,194,.32)}
.shot img{border-radius:12px;aspect-ratio:9/16;width:100%;margin-bottom:14px}
.shot h3{font-size:16px;margin-bottom:6px}
.shot p{font-size:13.5px;color:var(--c-text-2);line-height:1.7}
.rail-dots{display:flex;gap:8px;justify-content:center;margin-top:6px}
.rail-dots span{width:7px;height:7px;border-radius:50%;background:rgba(126,178,255,.3)}
.rail-dots span.on{background:var(--c-accent);box-shadow:0 0 10px rgba(0,227,194,.8);width:20px;border-radius:999px}

/* ============ Specs ============ */
.spec-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:32px}
.spec{padding:4px 0}
.spec-head{display:flex;align-items:center;gap:12px;margin-bottom:18px}
.spec-head i{width:36px;height:36px;border-radius:10px;display:flex;align-items:center;justify-content:center;
  background:rgba(47,107,255,.14);border:1px solid rgba(47,107,255,.36);color:#9CBEFF;font-style:normal;font-size:15px}
.spec-head h3{font-size:19px}
.spec-rows{display:grid;gap:0}
.spec-row{display:flex;justify-content:space-between;gap:16px;padding:11px 0;border-bottom:1px dashed rgba(126,178,255,.18);font-size:14px}
.spec-row:last-child{border-bottom:0}
.spec-row dt{color:var(--c-text-3)}
.spec-row dd{margin:0;color:var(--c-accent);font-variant-numeric:tabular-nums;font-weight:600}

/* ============ Reviews ============ */
.reviews{columns:2;column-gap:24px;transform:translate(-8px,-8px)}
.review{break-inside:avoid;margin-bottom:24px;padding:22px;border-radius:var(--r-card);background:rgba(255,255,255,.045);
  backdrop-filter:blur(14px) saturate(140%);-webkit-backdrop-filter:blur(14px) saturate(140%);border:1px solid rgba(255,255,255,.08);
  box-shadow:var(--sh-glass);transition:transform var(--t),border-color var(--t)}
.review:hover{transform:translateY(-4px);border-color:rgba(0,227,194,.3)}
.review-top{display:flex;align-items:center;gap:12px;margin-bottom:14px}
.avatar{width:40px;height:40px;border-radius:50%;flex:0 0 40px;display:flex;align-items:center;justify-content:center;font-size:15px;font-weight:600;
  background:linear-gradient(140deg,rgba(0,227,194,.28),rgba(47,107,255,.35));color:#E8F1FF;border:1px solid rgba(255,255,255,.14)}
.review-top strong{display:block;font-size:15px;font-weight:600}
.stars{color:var(--c-hot);font-size:12.5px;letter-spacing:2px}
.review p{font-size:14.5px;color:var(--c-text-2);line-height:1.85}
.review-foot{margin-top:14px;font-size:12px;color:var(--c-text-3);font-variant-numeric:tabular-nums}

/* ============ Download CTA ============ */
.dl-panel{position:relative;overflow:hidden;border-radius:var(--r-panel);padding:48px;display:grid;grid-template-columns:1.6fr 1fr;gap:40px;align-items:center;
  background:linear-gradient(120deg,rgba(18,34,54,.96),rgba(11,21,36,.96));border:1px solid rgba(0,227,194,.24);box-shadow:var(--sh-card)}
.dl-panel::before{content:"";position:absolute;right:-120px;top:-120px;width:340px;height:340px;border-radius:50%;
  background:radial-gradient(circle,rgba(0,227,194,.22),transparent 68%)}
.dl-panel h2{font-size:30px;margin-bottom:12px}
.dl-panel p{color:var(--c-text-2);font-size:15px;max-width:560px}
.dl-btns{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}
.dl-meta{margin-top:22px;display:flex;flex-wrap:wrap;gap:22px;font-size:12.5px;color:var(--c-text-3);font-variant-numeric:tabular-nums}
.qr{justify-self:center;text-align:center}
.qr-box{width:120px;height:120px;border-radius:14px;background:#E8F1FF;padding:10px;display:flex;align-items:center;justify-content:center}
.qr-box svg{width:100%;height:100%}
.qr small{display:block;margin-top:10px;font-size:12px;color:var(--c-text-3)}

/* ============ News ============ */
.news-grid{display:grid;grid-template-columns:6fr 6fr;gap:24px;align-items:start}
.news-main{overflow:hidden}
.news-main .imgwrap{border-radius:0;aspect-ratio:16/9}
.news-main .imgwrap img{width:100%;height:100%}
.news-body{padding:24px}
.news-body h3{font-size:22px;margin:14px 0 10px;line-height:1.45}
.news-body p{color:var(--c-text-2);font-size:14.5px;line-height:1.8}
.news-meta{margin-top:16px;display:flex;align-items:center;gap:14px;font-size:12.5px;color:var(--c-text-3)}
.news-side{display:grid;gap:16px}
.news-row{display:flex;gap:14px;padding:18px 20px;border-radius:var(--r-card);background:linear-gradient(160deg,rgba(18,34,54,.9),rgba(11,21,36,.9));
  border:1px solid var(--c-line);box-shadow:var(--sh-card);transition:transform var(--t),border-color var(--t)}
.news-row:hover{transform:translateY(-4px);border-color:rgba(0,227,194,.3)}
.news-row .bar{width:3px;flex:0 0 3px;border-radius:3px;background:var(--c-accent);box-shadow:0 0 10px rgba(0,227,194,.6)}
.news-row h3{font-size:16px;line-height:1.5;margin-bottom:8px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-row:hover h3{color:var(--c-accent)}
.news-row p{font-size:13.5px;color:var(--c-text-2);line-height:1.7;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-row .news-meta{margin-top:10px}
.empty-state{padding:64px 24px;border-radius:var(--r-panel);border:1px dashed rgba(126,178,255,.25);background:rgba(11,21,36,.5);text-align:center}
.empty-state svg{width:64px;height:64px;margin:0 auto 16px;opacity:.7}
.empty-state p{color:var(--c-text-2);font-size:15px}

/* ============ FAQ ============ */
.faq-list{border-top:1px solid rgba(126,178,255,.16)}
.faq-item{border-bottom:1px solid rgba(126,178,255,.16)}
.faq-item summary{list-style:none;cursor:pointer;display:flex;align-items:center;gap:18px;min-height:56px;padding:14px 0;font-size:17px;font-weight:600;transition:color var(--t)}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{color:var(--c-accent)}
.faq-num{font-size:13px;color:var(--c-accent);font-variant-numeric:tabular-nums;flex:0 0 28px}
.faq-sign{margin-left:auto;width:22px;height:22px;position:relative;flex:0 0 22px;transition:transform var(--t)}
.faq-sign::before,.faq-sign::after{content:"";position:absolute;background:var(--c-text-2);border-radius:2px;transition:background var(--t)}
.faq-sign::before{left:0;right:0;top:10px;height:2px}
.faq-sign::after{top:0;bottom:0;left:10px;width:2px}
.faq-item[open] .faq-sign{transform:rotate(135deg)}
.faq-item[open] .faq-sign::before,.faq-item[open] .faq-sign::after{background:var(--c-accent)}
.faq-answer{padding:0 0 24px 46px;font-size:15px;line-height:1.9;color:var(--c-text-2);max-width:860px}

/* ============ Footer ============ */
.site-footer{margin-top:40px;background:linear-gradient(180deg,rgba(11,21,36,.6),rgba(5,10,20,.98));border-top:1px solid var(--c-line);padding:64px 0 0}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px}
.footer-brand .logo{margin-bottom:14px}
.footer-brand p{font-size:14px;color:var(--c-text-2);line-height:1.8;max-width:300px}
.footer-col h4{font-size:14px;color:var(--c-accent);margin-bottom:16px;font-weight:600;letter-spacing:.02em}
.footer-col ul{display:grid;gap:10px}
.footer-col a{font-size:14px;color:var(--c-text-2);transition:all var(--t);display:inline-block}
.footer-col a:hover{color:var(--c-text);transform:translateX(2px)}
.footer-contact p{font-size:14px;color:var(--c-text-2);line-height:1.9}
.footer-contact b{color:var(--c-text);font-variant-numeric:tabular-nums}
.footer-bottom{margin-top:52px;padding:22px 0;border-top:1px solid var(--c-line);display:flex;flex-wrap:wrap;gap:14px;justify-content:space-between;font-size:13px;color:var(--c-text-3)}
.footer-links{display:flex;flex-wrap:wrap;gap:18px}
.footer-links a{color:var(--c-text-3);transition:color var(--t)}
.footer-links a:hover{color:var(--c-accent)}

/* ============ Responsive ============ */
@media (max-width:1024px){
  .main-nav{display:none}
  .hamburger{display:flex}
  .hero-grid{grid-template-columns:1fr;gap:40px}
  .hero h1{font-size:36px}
  .hero-device{order:-1}
  .phone{transform:none;width:250px}
  .value-strip{grid-template-columns:repeat(2,1fr);gap:0}
  .value-item{padding:20px 22px}
  .value-item:nth-child(odd){border-left:0;padding-left:0}
  .value-item:nth-child(even){border-left:1px solid var(--c-line)}
  .value-item:nth-child(n+3){border-top:1px solid var(--c-line)}
  .spec-grid{grid-template-columns:1fr;gap:36px}
  .news-grid{grid-template-columns:1fr}
  .dl-panel{grid-template-columns:1fr;padding:36px}
  .qr{justify-self:start}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:768px){
  body{padding-top:64px}
  .section{padding:56px 0}
  .container{padding:0 16px}
  .header-inner{padding:0 16px;gap:12px}
  .hero{padding:48px 0 56px}
  .hero h1{font-size:28px}
  .hero-sub{font-size:15.5px}
  .hero-metrics{gap:20px}
  .hero-metrics dd{font-size:17px}
  .section-head h2{font-size:24px}
  .news-body h3{font-size:19px}
  .reviews{columns:1;transform:none}
  .dl-panel h2{font-size:24px}
  .faq-item summary{font-size:15.5px;min-height:52px}
  .faq-answer{padding-left:0}
  .footer-grid{grid-template-columns:1fr 1fr}
  .mega{display:none}
}
@media (max-width:520px){
  .hero-actions .btn{width:100%}
  .rail{padding-left:16px;padding-right:16px;margin:0 -16px}
  .shot{flex:0 0 240px}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;gap:10px}
  .value-strip{grid-template-columns:1fr}
  .value-item{border-left:0 !important;padding-left:0;padding-right:0}
  .value-item + .value-item{border-top:1px solid var(--c-line)}
  .dl-panel{padding:28px 20px}
}

/* roulang page: article */
:root{
  --c-bg:#050A14;
  --c-surface:#0B1524;
  --c-surface-2:#122236;
  --c-line:rgba(126,178,255,.16);
  --c-primary:#2F6BFF;
  --c-primary-700:#1B47C9;
  --c-accent:#00E3C2;
  --c-hot:#FF8A3D;
  --c-text:#E8F1FF;
  --c-text-2:#9FB4CE;
  --c-text-3:#6B8099;
  --c-ok:#22C55E;
  --r-card:16px;
  --r-panel:20px;
  --r-btn:12px;
  --r-img:14px;
  --shadow-card:0 10px 30px -12px rgba(0,0,0,.72);
  --shadow-glow:0 0 0 1px rgba(0,227,194,.35), 0 10px 28px -8px rgba(0,227,194,.45);
  --t:180ms cubic-bezier(.2,.8,.2,1);
  --maxw:1200px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background-color:var(--c-bg);
  background-image:
    radial-gradient(900px 620px at 92% -6%, rgba(47,107,255,.12), transparent 62%),
    radial-gradient(760px 560px at -8% 96%, rgba(0,227,194,.09), transparent 60%),
    linear-gradient(rgba(126,178,255,.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(126,178,255,.03) 1px, transparent 1px);
  background-size:auto, auto, 24px 24px, 24px 24px;
  color:var(--c-text);
  font-family:"HarmonyOS Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",Inter,system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;object-fit:cover}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
input{font:inherit}
h1,h2,h3,h4,p,ul,ol{margin:0}
ul,ol{padding:0;list-style:none}
.num{font-variant-numeric:tabular-nums;font-feature-settings:"tnum" 1}
:focus-visible{outline:2px solid var(--c-accent);outline-offset:2px;border-radius:6px}

.container{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 24px}
.section{padding:88px 0}
.section-sm{padding:56px 0}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 22px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;letter-spacing:.01em;
  transition:transform var(--t),box-shadow var(--t),background var(--t),border-color var(--t),color var(--t);
  white-space:nowrap;
}
.btn-primary{
  background:var(--c-accent);color:#04121A;
  box-shadow:0 0 0 1px rgba(0,227,194,.35),0 10px 28px -12px rgba(0,227,194,.6);
}
.btn-primary:hover{background:#2BF0D2;box-shadow:0 0 0 1px rgba(0,227,194,.6),0 14px 34px -10px rgba(0,227,194,.75);transform:translateY(-2px)}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{
  background:rgba(255,255,255,.045);border:1px solid rgba(255,255,255,.12);
  color:var(--c-text);backdrop-filter:blur(14px) saturate(140%);
}
.btn-ghost:hover{border-color:rgba(0,227,194,.45);color:#fff;transform:translateY(-2px)}
.btn-link{display:inline-flex;align-items:center;gap:6px;color:var(--c-accent);font-weight:600;font-size:15px}
.btn-link svg{transition:transform var(--t)}
.btn-link:hover svg{transform:translateX(3px)}
.btn-sm{min-height:38px;padding:0 16px;font-size:14px}

/* ---------- 徽章 / 标签 ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 12px;border-radius:999px;
  background:rgba(0,227,194,.10);color:var(--c-accent);
  font-size:12px;line-height:1.6;font-weight:600;letter-spacing:.02em;
}
.badge-hot{background:rgba(255,138,61,.12);color:var(--c-hot)}
.tag-cloud{display:flex;flex-wrap:wrap;gap:10px}
.tag{
  display:inline-flex;align-items:center;padding:7px 14px;border-radius:999px;
  background:rgba(255,255,255,.045);border:1px solid var(--c-line);
  color:var(--c-text-2);font-size:13px;transition:all var(--t);
}
.tag:hover{color:var(--c-text);border-color:rgba(0,227,194,.42);background:rgba(0,227,194,.08)}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(5,10,20,.82);
  backdrop-filter:blur(14px) saturate(140%);
  border-bottom:1px solid var(--c-line);
  transition:background var(--t),box-shadow var(--t);
}
.site-header.is-scrolled{background:rgba(5,10,20,.94);box-shadow:0 12px 30px -20px rgba(0,0,0,.9),0 1px 0 rgba(0,227,194,.14)}
.header-inner{display:flex;align-items:center;gap:26px;height:72px;transition:height var(--t)}
.site-header.is-scrolled .header-inner{height:60px}
.logo{display:inline-flex;align-items:center;gap:10px;min-width:120px}
.logo-mark{width:38px;height:38px;flex:none;display:block}
.logo-mark svg{width:100%;height:100%;display:block}
.logo-text{font-size:19px;font-weight:700;letter-spacing:.04em;color:#fff;white-space:nowrap}
.main-nav{display:flex;align-items:center;gap:4px;margin-left:8px}
.main-nav a{
  position:relative;padding:8px 14px;border-radius:10px;
  font-size:15px;color:var(--c-text-2);transition:color var(--t),background var(--t);
}
.main-nav a:hover{color:var(--c-text);background:rgba(255,255,255,.05)}
.main-nav a.active{color:#fff}
.main-nav a.active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:0;height:2px;border-radius:2px;
  background:var(--c-accent);box-shadow:0 0 12px rgba(0,227,194,.8);
}
.header-right{margin-left:auto;display:flex;align-items:center;gap:12px;position:relative}
.mega-wrap{position:relative}
.btn-more{
  display:inline-flex;align-items:center;gap:6px;height:40px;padding:0 14px;border-radius:10px;
  color:var(--c-text-2);font-size:15px;border:1px solid transparent;transition:all var(--t);
}
.btn-more:hover{color:var(--c-text);border-color:var(--c-line);background:rgba(255,255,255,.04)}
.mega-panel{
  position:absolute;top:calc(100% + 14px);right:0;width:740px;padding:22px;
  display:grid;grid-template-columns:1.05fr 1.25fr 1fr;gap:22px;
  background:rgba(11,21,36,.97);
  border:1px solid rgba(0,227,194,.22);border-radius:var(--r-panel);
  box-shadow:var(--shadow-card),inset 0 1px 0 rgba(255,255,255,.06);
  opacity:0;visibility:hidden;transform:translateY(-6px);pointer-events:none;
  transition:opacity 160ms ease,transform 160ms ease,visibility 160ms;
}
.mega-wrap:hover .mega-panel,
.mega-wrap:focus-within .mega-panel,
.mega-wrap.open .mega-panel{opacity:1;visibility:visible;transform:translateY(0);pointer-events:auto}
.mega-col h5{margin:0 0 12px;font-size:12px;letter-spacing:.14em;color:var(--c-accent);font-weight:700}
.mega-list li + li{margin-top:9px}
.mega-list a{display:flex;align-items:center;gap:8px;font-size:14px;color:var(--c-text-2);transition:color var(--t),transform var(--t)}
.mega-list a:hover{color:var(--c-text);transform:translateX(2px)}
.dot{width:6px;height:6px;border-radius:50%;background:var(--c-accent);flex:none;box-shadow:0 0 8px rgba(0,227,194,.8)}
.mega-post{display:block;padding:9px 0;border-bottom:1px dashed rgba(126,178,255,.14)}
.mega-post:last-child{border-bottom:0}
.mega-post b{display:block;font-size:14px;font-weight:600;color:var(--c-text);line-height:1.5}
.mega-post:hover b{color:var(--c-accent)}
.mega-post span{font-size:12px;color:var(--c-text-3)}
.mega-card{
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  padding:14px;border-radius:14px;margin-bottom:10px;
  background:linear-gradient(135deg,rgba(0,227,194,.14),rgba(47,107,255,.10));
  border:1px solid rgba(0,227,194,.28);transition:all var(--t);
}
.mega-card:hover{transform:translateY(-2px);border-color:rgba(0,227,194,.6)}
.mega-card b{display:block;font-size:14px}
.mega-card span{font-size:12px;color:var(--c-text-2)}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;border:1px solid var(--c-line);
  align-items:center;justify-content:center;background:rgba(255,255,255,.04);
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--c-text);border-radius:2px;position:relative}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--c-text);border-radius:2px;
}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}
.nav-toggle-input{position:absolute;opacity:0;pointer-events:none}
.mobile-drawer{display:none}

/* ---------- 文章头部 ---------- */
.article-hero{
  position:relative;padding:56px 0 48px;border-bottom:1px solid var(--c-line);
  background-image:
    linear-gradient(180deg,rgba(5,10,20,.80),rgba(5,10,20,.93)),
    url('/assets/images/backpic/back-2.png');
  background-size:cover;background-position:center;
}
.breadcrumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--c-text-3);flex-wrap:wrap}
.breadcrumb a{color:var(--c-text-2);transition:color var(--t)}
.breadcrumb a:hover{color:var(--c-accent)}
.breadcrumb .sep{color:var(--c-text-3);opacity:.7}
.breadcrumb .current{max-width:320px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;color:var(--c-text-3)}
.article-hero h1{
  margin:18px 0 0;max-width:900px;
  font-size:36px;line-height:1.3;font-weight:700;letter-spacing:-.02em;color:#fff;
}
.article-meta{display:flex;align-items:center;flex-wrap:wrap;gap:14px;margin-top:20px;font-size:13px;color:var(--c-text-3)}
.article-meta .meta-item{display:inline-flex;align-items:center;gap:6px}
.article-meta .meta-item b{color:var(--c-text-2);font-weight:600}
.meta-avatar{width:28px;height:28px;border-radius:50%;background:linear-gradient(135deg,var(--c-accent),var(--c-primary));display:inline-block}

/* ---------- 正文布局 ---------- */
.article-layout{display:grid;grid-template-columns:minmax(0,760px) 300px;gap:56px;align-items:start}
.article-body{font-size:17px;line-height:1.9;color:var(--c-text-2);word-break:break-word}
.article-body p{margin:0 0 20px}
.article-body h2{
  position:relative;margin:40px 0 16px;padding-left:16px;
  font-size:26px;line-height:1.4;font-weight:700;color:var(--c-text);letter-spacing:-.02em;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.18em;bottom:.18em;width:3px;border-radius:3px;
  background:var(--c-accent);box-shadow:0 0 12px rgba(0,227,194,.6);
}
.article-body h3{margin:28px 0 12px;font-size:20px;line-height:1.5;font-weight:600;color:var(--c-text)}
.article-body h4{margin:22px 0 10px;font-size:17px;font-weight:600;color:var(--c-text)}
.article-body ul,.article-body ol{margin:0 0 20px;padding-left:1.4em}
.article-body ul{list-style:disc}
.article-body ol{list-style:decimal}
.article-body li{margin:6px 0}
.article-body li::marker{color:var(--c-accent)}
.article-body a{color:var(--c-accent);text-decoration:underline;text-decoration-thickness:1px;text-underline-offset:3px}
.article-body a:hover{text-decoration-thickness:2px}
.article-body strong{color:var(--c-text)}
.article-body img{border-radius:var(--r-img);margin:22px auto}
.article-body figure{margin:24px 0}
.article-body figcaption{margin-top:10px;text-align:center;font-size:13px;color:var(--c-text-3)}
.article-body blockquote{
  margin:24px 0;padding:16px 20px;border-left:3px solid var(--c-accent);
  background:rgba(255,255,255,.045);border-radius:0 14px 14px 0;color:var(--c-text);
  backdrop-filter:blur(10px);
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body table{width:100%;border-collapse:collapse;margin:22px 0;font-size:15px}
.article-body th,.article-body td{padding:12px 14px;border-bottom:1px solid var(--c-line);text-align:left}
.article-body th{color:var(--c-text);background:rgba(255,255,255,.04);font-weight:600}
.article-body hr{border:0;height:1px;background:var(--c-line);margin:36px 0}
.divider-gem{display:flex;align-items:center;gap:12px;margin:36px 0}
.divider-gem::before,.divider-gem::after{content:"";flex:1;height:1px;background:var(--c-line)}
.divider-gem i{width:8px;height:8px;background:var(--c-accent);transform:rotate(45deg);display:block;box-shadow:0 0 10px rgba(0,227,194,.7)}

.empty-state{
  padding:56px 28px;text-align:center;border-radius:var(--r-panel);
  background:rgba(255,255,255,.035);border:1px dashed rgba(126,178,255,.24);
}
.empty-mark{
  width:64px;height:64px;margin:0 auto 18px;border-radius:18px;
  background:linear-gradient(135deg,rgba(0,227,194,.16),rgba(47,107,255,.12));
  border:1px solid rgba(0,227,194,.3);display:flex;align-items:center;justify-content:center;
  color:var(--c-accent);font-size:24px;font-weight:700;
}
.empty-state h2{font-size:20px;color:var(--c-text);margin-bottom:8px}
.empty-state p{color:var(--c-text-2);font-size:15px;margin-bottom:22px}

/* ---------- 侧栏 ---------- */
.article-side{position:sticky;top:96px;display:flex;flex-direction:column;gap:20px}
.side-card{
  padding:20px;border-radius:var(--r-card);
  background:rgba(255,255,255,.045);
  border:1px solid rgba(255,255,255,.08);
  box-shadow:var(--shadow-card),inset 0 1px 0 rgba(255,255,255,.06);
  backdrop-filter:blur(14px) saturate(140%);
}
.side-card h3{
  font-size:13px;letter-spacing:.12em;color:var(--c-accent);font-weight:700;margin-bottom:14px;
}
.side-nav li + li{margin-top:2px}
.side-nav a{
  display:flex;align-items:center;justify-content:space-between;gap:8px;
  padding:10px 12px;border-radius:10px;font-size:14px;color:var(--c-text-2);
  border-left:3px solid transparent;transition:all var(--t);
}
.side-nav a:hover{background:rgba(0,227,194,.08);color:var(--c-text);border-left-color:var(--c-accent);transform:translateX(2px)}
.side-nav a span{font-size:12px;color:var(--c-text-3)}
.side-post{display:block;padding:10px 0;border-bottom:1px dashed rgba(126,178,255,.14)}
.side-post:last-child{border-bottom:0;padding-bottom:0}
.side-post b{display:block;font-size:14px;font-weight:600;color:var(--c-text-2);line-height:1.55;transition:color var(--t)}
.side-post:hover b{color:var(--c-accent)}
.side-post span{font-size:12px;color:var(--c-text-3)}
.side-card .btn{width:100%;margin-top:14px}

/* ---------- 文末 ---------- */
.article-foot{margin-top:44px;padding-top:28px;border-top:1px solid var(--c-line)}
.foot-title{font-size:13px;letter-spacing:.12em;color:var(--c-text-3);font-weight:700;margin-bottom:14px}
.article-foot .btn-row{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}

/* ---------- 相关推荐 / 卡片 ---------- */
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:34px;flex-wrap:wrap}
.section-head h2{font-size:32px;line-height:1.35;font-weight:700;letter-spacing:-.02em;color:var(--c-text)}
.section-head p{margin-top:8px;font-size:14px;color:var(--c-text-2)}
.card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.card{
  display:flex;flex-direction:column;overflow:hidden;border-radius:var(--r-card);
  background:var(--c-surface);
  border:1px solid rgba(255,255,255,.07);
  box-shadow:var(--shadow-card);
  transition:transform var(--t),border-color var(--t),box-shadow var(--t);
}
.card:hover{transform:translateY(-4px);border-color:rgba(0,227,194,.3);box-shadow:var(--shadow-card),0 18px 40px -18px rgba(0,227,194,.35)}
.card-media{position:relative;aspect-ratio:16/9;overflow:hidden;background:var(--c-surface-2)}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform 400ms cubic-bezier(.2,.8,.2,1)}
.card:hover .card-media img{transform:scale(1.05)}
.card-media::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(5,10,20,.08),rgba(5,10,20,.62))}
.card-body{padding:20px;display:flex;flex-direction:column;gap:10px;flex:1}
.card-body h3{font-size:17px;line-height:1.55;font-weight:600;color:var(--c-text)}
.card-body p{font-size:14px;color:var(--c-text-2);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card-meta{margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:10px;font-size:12px;color:var(--c-text-3)}

/* ---------- FAQ ---------- */
.faq-list{max-width:860px;margin:0 auto;border-top:1px solid var(--c-line)}
.faq-item{border-bottom:1px solid var(--c-line)}
.faq-item summary{
  display:flex;align-items:center;gap:16px;cursor:pointer;list-style:none;
  min-height:56px;padding:16px 0;font-size:16px;font-weight:600;color:var(--c-text);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary .idx{font-size:13px;font-weight:700;color:var(--c-accent);font-variant-numeric:tabular-nums;flex:none}
.faq-item summary .plus{
  margin-left:auto;width:26px;height:26px;flex:none;border-radius:50%;
  border:1px solid rgba(0,227,194,.4);position:relative;transition:transform var(--t),background var(--t);
}
.faq-item summary .plus::before,.faq-item summary .plus::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--c-accent);border-radius:2px;transform:translate(-50%,-50%);
}
.faq-item summary .plus::before{width:12px;height:1.6px}
.faq-item summary .plus::after{width:1.6px;height:12px;transition:opacity var(--t)}
.faq-item[open] summary .plus{background:rgba(0,227,194,.12);transform:rotate(180deg)}
.faq-item[open] summary .plus::after{opacity:0}
.faq-item .faq-body{padding:0 0 20px 32px;font-size:15px;line-height:1.9;color:var(--c-text-2);max-width:760px}
.faq-item .faq-body p{margin:0}

/* ---------- CTA ---------- */
.cta-band{
  position:relative;overflow:hidden;border-radius:var(--r-panel);
  padding:52px 44px;border:1px solid rgba(0,227,194,.26);
  background-image:
    linear-gradient(120deg,rgba(5,10,20,.90),rgba(5,10,20,.72)),
    url('/assets/images/backpic/back-3.webp');
  background-size:cover;background-position:center;
  display:grid;grid-template-columns:1.4fr 1fr;gap:32px;align-items:center;
}
.cta-band h2{font-size:30px;line-height:1.35;font-weight:700;letter-spacing:-.02em;color:#fff}
.cta-band p{margin-top:12px;font-size:15px;color:var(--c-text-2);max-width:560px}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:24px}
.qr-box{
  justify-self:end;width:132px;text-align:center;
}
.qr-square{
  width:132px;height:132px;border-radius:14px;
  background:rgba(255,255,255,.06);border:1px solid rgba(0,227,194,.32);
  display:flex;align-items:center;justify-content:center;
  box-shadow:inset 0 1px 0 rgba(255,255,255,.08);
}
.qr-square svg{width:72px;height:72px;opacity:.85}
.qr-box span{display:block;margin-top:10px;font-size:12px;color:var(--c-text-3)}

/* ---------- 页脚 ---------- */
.site-footer{margin-top:88px;border-top:1px solid var(--c-line);background:rgba(5,10,20,.86)}
.footer-grid{
  display:grid;grid-template-columns:1.5fr 1fr 1fr 1.3fr;gap:36px;
  padding:56px 0 40px;
}
.footer-brand p{margin-top:14px;font-size:14px;color:var(--c-text-2);max-width:280px;line-height:1.8}
.footer-col h4{font-size:14px;font-weight:700;letter-spacing:.08em;color:var(--c-accent);margin-bottom:16px}
.footer-col ul li + li{margin-top:10px}
.footer-col ul a{font-size:14px;color:var(--c-text-2);transition:color var(--t),transform var(--t);display:inline-block}
.footer-col ul a:hover{color:var(--c-text);transform:translateX(2px)}
.footer-contact p{font-size:14px;color:var(--c-text-2);margin-bottom:8px;line-height:1.8}
.footer-contact b{color:var(--c-text);font-weight:600}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:18px;flex-wrap:wrap;
  padding:20px 0 32px;border-top:1px solid var(--c-line);
  font-size:13px;color:var(--c-text-3);
}
.footer-links{display:flex;flex-wrap:wrap;gap:16px}
.footer-links a{color:var(--c-text-3);transition:color var(--t)}
.footer-links a:hover{color:var(--c-accent)}

/* ---------- 移动端抽屉 ---------- */
@media (max-width:1023px){
  .main-nav,.mega-wrap,.header-cta{display:none}
  .nav-toggle{display:inline-flex}
  .nav-toggle-input:checked ~ .mobile-drawer{display:block}
  .mobile-drawer{
    height:88vh;overflow-y:auto;padding:18px 24px 28px;
    background:rgba(5,10,20,.98);border-top:1px solid var(--c-line);
  }
  .mobile-drawer nav{display:flex;flex-direction:column;gap:4px}
  .mobile-drawer nav a{
    display:flex;align-items:center;justify-content:space-between;
    padding:14px 4px;font-size:16px;color:var(--c-text);
    border-bottom:1px solid var(--c-line);
  }
  .mobile-drawer nav a.active{color:var(--c-accent)}
  .mobile-drawer .drawer-title{
    margin:22px 0 12px;font-size:12px;letter-spacing:.14em;color:var(--c-accent);font-weight:700;
  }
  .drawer-cta{display:flex;flex-direction:column;gap:12px;margin-top:24px;position:sticky;bottom:0}
}

/* ---------- 响应式 ---------- */
@media (max-width:1200px){
  .article-layout{grid-template-columns:minmax(0,1fr) 280px;gap:36px}
}
@media (max-width:1023px){
  .article-layout{grid-template-columns:minmax(0,1fr)}
  .article-side{position:static;order:2}
  .cta-band{grid-template-columns:1fr;padding:40px 28px}
  .qr-box{justify-self:start}
  .card-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
}
@media (max-width:767px){
  .container{padding:0 16px}
  .section{padding:56px 0}
  .section-sm{padding:40px 0}
  .article-hero{padding:36px 0 32px}
  .article-hero h1{font-size:26px}
  .article-body{font-size:16px}
  .article-body h2{font-size:22px;margin-top:34px}
  .article-body h3{font-size:18px}
  .section-head h2{font-size:24px}
  .btn{width:100%;justify-content:center}
  .card-grid{grid-template-columns:minmax(0,1fr);gap:18px}
  .article-foot .btn-row .btn{width:100%}
  .tag-cloud .tag{font-size:12px}
}
@media (max-width:519px){
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .cta-band{padding:32px 20px}
  .article-hero h1{font-size:23px}
}

/* roulang page: category1 */
:root{
  --c-bg:#050A14;
  --c-surface:#0B1524;
  --c-surface-2:#122236;
  --c-line:rgba(126,178,255,.16);
  --c-primary:#2F6BFF;
  --c-primary-700:#1B47C9;
  --c-accent:#00E3C2;
  --c-hot:#FF8A3D;
  --c-text:#E8F1FF;
  --c-text-2:#9FB4CE;
  --c-text-3:#6B8099;
  --r-card:16px;
  --r-panel:20px;
  --r-btn:12px;
  --r-img:14px;
  --shadow-card:0 10px 30px -12px rgba(0,0,0,.72);
  --shadow-glow:0 0 0 1px rgba(0,227,194,.35),0 10px 28px -8px rgba(0,227,194,.45);
  --ease:180ms cubic-bezier(.2,.8,.2,1);
  --font-cn:"HarmonyOS Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",Inter,system-ui,-apple-system,"Segoe UI",sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background-color:var(--c-bg);
  background-image:
    radial-gradient(900px 620px at 88% -5%, rgba(47,107,255,.12), transparent 62%),
    radial-gradient(820px 620px at -8% 102%, rgba(0,227,194,.09), transparent 62%),
    linear-gradient(rgba(126,178,255,.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(126,178,255,.03) 1px, transparent 1px);
  background-size:auto,auto,24px 24px,24px 24px;
  color:var(--c-text);
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-style:none}
a{color:inherit;text-decoration:none}
button,input{font-family:inherit;font-size:inherit}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
.num{font-variant-numeric:tabular-nums}
:focus-visible{outline:2px solid var(--c-accent);outline-offset:2px}
::selection{background:rgba(0,227,194,.28)}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.section{padding:88px 0}
.section-tight{padding:64px 0}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:36px}
.section-head h2{font-size:32px;line-height:1.35;font-weight:700;letter-spacing:-.02em}
.section-head p{color:var(--c-text-2);font-size:15px;margin-top:10px;max-width:640px}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:12px;letter-spacing:.14em;color:var(--c-accent);text-transform:uppercase;margin-bottom:14px}
.eyebrow::before{content:"";width:18px;height:2px;background:var(--c-accent);display:block;border-radius:2px}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(5,10,20,.82);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  border-bottom:1px solid rgba(126,178,255,.10);
  transition:background var(--ease),border-color var(--ease);
}
.site-header.is-scrolled{background:rgba(5,10,20,.95);border-bottom-color:rgba(0,227,194,.22)}
.header-inner{display:flex;align-items:center;gap:20px;min-height:64px;transition:min-height var(--ease)}
.site-header.is-scrolled .header-inner{min-height:56px}
.logo{display:flex;align-items:center;gap:10px;min-width:120px;flex-shrink:0}
.logo-mark{width:34px;height:34px;display:block}
.logo-mark svg{width:100%;height:100%;display:block}
.logo-text{font-size:18px;font-weight:700;letter-spacing:.02em;color:var(--c-text)}
.main-nav{display:flex;align-items:center;gap:2px;flex:1;flex-wrap:wrap}
.main-nav a{
  position:relative;padding:9px 13px;border-radius:8px;font-size:15px;color:var(--c-text-2);
  transition:color var(--ease),background var(--ease);
}
.main-nav a:hover{color:var(--c-text);background:rgba(255,255,255,.05)}
.main-nav a.active{color:var(--c-accent)}
.main-nav a.active::after{
  content:"";position:absolute;left:13px;right:13px;bottom:2px;height:2px;
  background:var(--c-accent);border-radius:2px;
}
.header-actions{display:flex;align-items:center;gap:12px;margin-left:auto}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 22px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;
  transition:transform var(--ease),box-shadow var(--ease),background var(--ease),color var(--ease),border-color var(--ease),filter var(--ease);
  white-space:nowrap;
}
.btn-primary{background:var(--c-accent);color:#04121A;box-shadow:var(--shadow-glow)}
.btn-primary:hover{filter:brightness(1.08);transform:translateY(-2px)}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{background:rgba(255,255,255,.045);border-color:rgba(255,255,255,.10);color:var(--c-text);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px)}
.btn-ghost:hover{border-color:rgba(0,227,194,.42);color:#B9FFF3;transform:translateY(-2px)}
.btn-text{background:none;border:none;color:var(--c-accent);padding:8px 0;min-height:auto;font-weight:600}
.btn-text i{transition:transform var(--ease)}
.btn-text:hover i{transform:translateX(4px)}
.btn-sm{min-height:40px;padding:0 16px;font-size:14px}
.more-wrap{position:relative}
.more-btn{
  display:inline-flex;align-items:center;gap:8px;min-height:44px;padding:0 16px;
  border-radius:var(--r-btn);background:rgba(255,255,255,.045);border:1px solid rgba(255,255,255,.10);
  color:var(--c-text);font-weight:600;font-size:15px;cursor:pointer;
  transition:border-color var(--ease),color var(--ease);
}
.more-btn:hover{border-color:rgba(0,227,194,.42);color:#B9FFF3}
.more-btn i{font-size:12px;transition:transform var(--ease)}
.more-wrap:hover .more-btn i,.more-wrap:focus-within .more-btn i{transform:rotate(180deg)}
.mega-panel{
  position:absolute;right:0;top:calc(100% + 14px);width:720px;
  display:grid;grid-template-columns:1fr 1.15fr 1fr;gap:26px;
  padding:24px;border-radius:var(--r-panel);
  background:rgba(11,21,36,.97);
  border:1px solid rgba(0,227,194,.22);
  box-shadow:0 26px 60px -22px rgba(0,0,0,.9);
  opacity:0;visibility:hidden;transform:translateY(-6px);
  transition:opacity 160ms ease,transform 160ms ease,visibility 160ms ease;
  z-index:70;
}
.more-wrap:hover .mega-panel,.more-wrap:focus-within .mega-panel{opacity:1;visibility:visible;transform:translateY(0)}
.mega-col h5{font-size:12px;letter-spacing:.12em;color:var(--c-text-3);font-weight:600;margin-bottom:14px}
.mega-list li + li{margin-top:10px}
.mega-list a{display:flex;align-items:center;gap:10px;font-size:14px;color:var(--c-text-2);transition:color var(--ease),transform var(--ease)}
.mega-list a:hover{color:var(--c-accent);transform:translateX(2px)}
.mega-list i{color:var(--c-accent);font-size:13px;width:16px;text-align:center}
.mega-news li + li{margin-top:12px;padding-top:12px;border-top:1px solid rgba(126,178,255,.12)}
.mega-news a{display:block;font-size:14px;color:var(--c-text);line-height:1.55;transition:color var(--ease)}
.mega-news a:hover{color:var(--c-accent)}
.mega-news span{display:block;font-size:12px;color:var(--c-text-3);margin-top:4px}
.mega-card{
  display:block;padding:16px;border-radius:var(--r-img);
  background:rgba(0,227,194,.08);border:1px solid rgba(0,227,194,.22);
  transition:transform var(--ease),border-color var(--ease);
}
.mega-card:hover{transform:translateY(-3px);border-color:rgba(0,227,194,.5)}
.mega-card strong{display:block;font-size:14px;color:var(--c-accent);margin-bottom:6px}
.mega-card p{font-size:13px;color:var(--c-text-2);line-height:1.65}
.mega-card + .mega-card{margin-top:12px;background:rgba(255,255,255,.045);border-color:rgba(255,255,255,.10)}
.mega-card + .mega-card strong{color:var(--c-text)}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;
  background:rgba(255,255,255,.045);border:1px solid rgba(255,255,255,.10);
  color:var(--c-text);cursor:pointer;align-items:center;justify-content:center;
}
.mobile-drawer{
  position:fixed;inset:0;z-index:55;padding:86px 24px 40px;overflow:auto;
  background:rgba(5,10,20,.98);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);
  opacity:0;visibility:hidden;transform:translateY(-10px);
  transition:opacity 180ms ease,transform 180ms ease,visibility 180ms ease;
}
body.nav-open .mobile-drawer{opacity:1;visibility:visible;transform:translateY(0)}
body.nav-open{overflow:hidden}
.mobile-drawer nav{display:flex;flex-direction:column;gap:6px;margin-bottom:26px}
.mobile-drawer nav a{
  display:flex;align-items:center;justify-content:space-between;
  min-height:52px;padding:0 16px;border-radius:12px;font-size:16px;
  background:rgba(255,255,255,.04);border:1px solid rgba(255,255,255,.07);color:var(--c-text);
}
.mobile-drawer nav a.active{color:var(--c-accent);border-color:rgba(0,227,194,.4)}
.mobile-cta{display:grid;gap:12px}

/* ============ 分类 Banner ============ */
.cat-banner{position:relative;overflow:hidden;border-bottom:1px solid var(--c-line)}
.cat-banner::before{
  content:"";position:absolute;inset:0;
  background-image:
    linear-gradient(100deg, rgba(5,10,20,.92) 0%, rgba(5,10,20,.80) 48%, rgba(5,10,20,.62) 100%),
    url('/assets/images/backpic/back-2.png');
  background-size:cover;background-position:center;
}
.cat-banner .container{position:relative;z-index:1}
.banner-inner{
  min-height:220px;display:flex;align-items:center;justify-content:space-between;
  gap:36px;padding:44px 0;
}
.banner-text{max-width:660px}
.banner-text h1{font-size:44px;line-height:1.2;font-weight:700;letter-spacing:-.02em}
.banner-text h1 em{font-style:normal;color:var(--c-accent)}
.banner-text p{color:var(--c-text-2);font-size:15px;margin-top:16px;line-height:1.85}
.banner-stats{display:flex;gap:16px;flex-shrink:0}
.mini-stat{
  min-width:150px;padding:18px 20px;border-radius:var(--r-img);
  background:rgba(255,255,255,.045);border:1px solid rgba(255,255,255,.08);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.06),var(--shadow-card);
}
.mini-stat b{display:block;font-size:30px;font-weight:700;color:var(--c-accent);line-height:1.2;font-variant-numeric:tabular-nums}
.mini-stat span{display:block;font-size:13px;color:var(--c-text-3);margin-top:6px}

/* ============ 主体布局 ============ */
.cat-layout{display:grid;grid-template-columns:248px minmax(0,1fr);gap:32px;align-items:start}
.filter-panel{
  position:sticky;top:88px;
  padding:22px;border-radius:var(--r-panel);
  background:linear-gradient(180deg,rgba(255,255,255,.05),rgba(255,255,255,.02));
  border:1px solid rgba(255,255,255,.08);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.06),var(--shadow-card);
}
.filter-panel h3{font-size:15px;font-weight:600;margin-bottom:6px}
.filter-panel .filter-hint{font-size:12px;color:var(--c-text-3);line-height:1.6}
.filter-group + .filter-group{margin-top:22px;padding-top:22px;border-top:1px dashed rgba(126,178,255,.18)}
.filter-title{font-size:13px;letter-spacing:.08em;color:var(--c-text-3);font-weight:600;margin-bottom:12px}
.chip-list{display:flex;flex-wrap:wrap;gap:8px}
.chip{
  display:inline-flex;align-items:center;gap:6px;
  padding:6px 12px;border-radius:999px;font-size:13px;cursor:pointer;
  background:rgba(0,227,194,.10);color:var(--c-accent);
  border:1px solid transparent;transition:all var(--ease);
}
.chip:hover{border-color:rgba(0,227,194,.4)}
.chip.is-on{background:rgba(0,227,194,.20);border-color:rgba(0,227,194,.5);color:#A8FBEE}
.chip-hot{background:rgba(255,138,61,.12);color:var(--c-hot)}
.chip-hot:hover{border-color:rgba(255,138,61,.45)}
.chip-hot.is-on{background:rgba(255,138,61,.22);border-color:rgba(255,138,61,.55);color:#FFC49A}

.cat-main-head{display:flex;align-items:center;justify-content:space-between;gap:18px;margin-bottom:22px;flex-wrap:wrap}
.cat-main-head h2{font-size:22px;font-weight:600}
.cat-main-head .count{font-size:13px;color:var(--c-text-3);font-variant-numeric:tabular-nums}
.mobile-filter{display:none}

/* ============ 赛事卡片网格 ============ */
.match-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.match-card{
  display:flex;flex-direction:column;overflow:hidden;
  border-radius:var(--r-card);
  background:var(--c-surface);
  border:1px solid rgba(126,178,255,.14);
  box-shadow:var(--shadow-card);
  transition:transform var(--ease),border-color var(--ease),box-shadow var(--ease);
}
.match-card:hover{transform:translateY(-4px);border-color:rgba(0,227,194,.30);box-shadow:0 18px 40px -18px rgba(0,227,194,.35)}
.match-cover{position:relative;aspect-ratio:16/9;overflow:hidden}
.match-cover img{width:100%;height:100%;object-fit:cover;transition:transform 420ms cubic-bezier(.2,.8,.2,1)}
.match-card:hover .match-cover img{transform:scale(1.05)}
.match-cover::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(5,10,20,.18) 0%,rgba(5,10,20,.06) 45%,rgba(11,21,36,.88) 100%);
}
.match-body{padding:18px 18px 20px;display:flex;flex-direction:column;gap:10px;flex:1}
.badge{
  display:inline-flex;align-items:center;gap:6px;align-self:flex-start;
  padding:4px 11px;border-radius:999px;font-size:12px;font-weight:600;
  background:rgba(0,227,194,.10);color:var(--c-accent);
}
.badge-hot{background:rgba(255,138,61,.14);color:var(--c-hot)}
.match-body h3{font-size:17px;font-weight:600;line-height:1.5}
.match-body h3 a{transition:color var(--ease)}
.match-body h3 a:hover{color:var(--c-accent)}
.match-body p{font-size:14px;color:var(--c-text-2);line-height:1.75}
.match-meta{
  margin-top:auto;padding-top:14px;border-top:1px solid rgba(126,178,255,.12);
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  font-size:13px;color:var(--c-text-3);
}
.match-meta .time{font-variant-numeric:tabular-nums;color:var(--c-text-2)}
.match-meta i{color:var(--c-accent);margin-right:6px}

/* ============ 分页 ============ */
.pager{display:flex;justify-content:center;flex-wrap:wrap;gap:8px;margin-top:44px}
.pager a,.pager span{
  min-width:44px;height:44px;display:inline-flex;align-items:center;justify-content:center;
  padding:0 14px;border-radius:var(--r-btn);font-size:14px;
  border:1px solid rgba(126,178,255,.16);color:var(--c-text-2);
  background:rgba(255,255,255,.03);
  transition:all var(--ease);
}
.pager a:hover{border-color:rgba(0,227,194,.42);color:var(--c-text)}
.pager .is-now{background:var(--c-accent);color:#04121A;border-color:transparent;font-weight:700}
.pager .gap{border-color:transparent;background:none;cursor:default}

/* ============ 数据带 ============ */
.stat-band{
  display:grid;grid-template-columns:repeat(4,1fr);gap:1px;
  background:var(--c-line);border:1px solid var(--c-line);
  border-radius:var(--r-panel);overflow:hidden;
}
.stat-cell{background:var(--c-surface);padding:30px 26px;transition:background var(--ease)}
.stat-cell:hover{background:var(--c-surface-2)}
.stat-cell b{display:block;font-size:34px;font-weight:700;line-height:1.15;color:var(--c-accent);font-variant-numeric:tabular-nums}
.stat-cell b small{font-size:14px;font-weight:600;color:var(--c-text-3);margin-left:6px}
.stat-cell span{display:block;font-size:14px;color:var(--c-text-2);margin-top:8px}
.stat-cell em{display:block;font-size:12px;color:var(--c-text-3);font-style:normal;margin-top:6px}

/* ============ 时间线 ============ */
.timeline{margin-top:8px}
.tl-item{position:relative;padding:0 0 30px 30px;border-left:1px solid rgba(126,178,255,.20)}
.tl-item:last-child{border-left-color:transparent;padding-bottom:0}
.tl-item::before{
  content:"";position:absolute;left:-5px;top:8px;width:9px;height:9px;border-radius:50%;
  background:var(--c-accent);box-shadow:0 0 12px rgba(0,227,194,.75);
}
.tl-time{font-size:13px;color:var(--c-accent);font-variant-numeric:tabular-nums;letter-spacing:.04em}
.tl-item h3{font-size:19px;font-weight:600;margin:6px 0 8px}
.tl-item p{font-size:15px;color:var(--c-text-2);line-height:1.8;max-width:720px}

/* ============ FAQ ============ */
.faq-list{border-top:1px solid rgba(126,178,255,.16)}
.faq-item{border-bottom:1px solid rgba(126,178,255,.16)}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;gap:16px;
  min-height:56px;padding:12px 0;font-size:16px;font-weight:600;color:var(--c-text);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-no{font-size:14px;color:var(--c-accent);font-variant-numeric:tabular-nums;flex-shrink:0}
.faq-mark{
  margin-left:auto;flex-shrink:0;width:22px;height:22px;position:relative;
  transition:transform var(--ease);
}
.faq-mark::before,.faq-mark::after{
  content:"";position:absolute;background:var(--c-accent);border-radius:2px;
}
.faq-mark::before{left:0;top:10px;width:22px;height:2px}
.faq-mark::after{left:10px;top:0;width:2px;height:22px}
.faq-item[open] .faq-mark{transform:rotate(45deg)}
.faq-item[open] summary{color:var(--c-accent)}
.faq-answer{padding:0 0 22px 34px;font-size:15px;line-height:1.9;color:var(--c-text-2)}

/* ============ CTA ============ */
.cta-panel{
  position:relative;overflow:hidden;border-radius:var(--r-panel);
  padding:52px 48px;border:1px solid rgba(0,227,194,.24);
  background:
    radial-gradient(600px 320px at 88% 10%, rgba(0,227,194,.16), transparent 60%),
    linear-gradient(140deg, rgba(18,34,54,.96), rgba(11,21,36,.98));
  box-shadow:inset 0 1px 0 rgba(255,255,255,.06),var(--shadow-card);
  display:flex;align-items:center;justify-content:space-between;gap:40px;
}
.cta-panel h2{font-size:30px;font-weight:700;line-height:1.35;letter-spacing:-.01em}
.cta-panel p{font-size:15px;color:var(--c-text-2);margin-top:12px;max-width:520px}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:26px}
.qr-box{
  width:120px;height:120px;flex-shrink:0;border-radius:var(--r-img);
  background:rgba(255,255,255,.05);border:1px dashed rgba(0,227,194,.4);
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:6px;
  color:var(--c-text-3);font-size:12px;
}
.qr-box i{font-size:26px;color:var(--c-accent)}

/* ============ 页脚 ============ */
.site-footer{
  margin-top:20px;border-top:1px solid rgba(126,178,255,.14);
  background:linear-gradient(180deg, rgba(11,21,36,.6), rgba(5,10,20,.98));
  padding:72px 0 28px;
}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.3fr;gap:40px}
.footer-brand .logo{margin-bottom:16px}
.footer-brand p{font-size:14px;color:var(--c-text-2);line-height:1.8;max-width:300px}
.footer-col h4{font-size:14px;color:var(--c-accent);font-weight:600;margin-bottom:16px}
.footer-col ul li + li{margin-top:10px}
.footer-col ul a{font-size:14px;color:var(--c-text-2);transition:color var(--ease),transform var(--ease);display:inline-block}
.footer-col ul a:hover{color:var(--c-text);transform:translateX(2px)}
.footer-contact p{font-size:14px;color:var(--c-text-2);line-height:1.8;margin-bottom:8px}
.footer-contact b{color:var(--c-text);font-weight:600}
.footer-bottom{
  margin-top:48px;padding-top:22px;border-top:1px solid rgba(126,178,255,.14);
  display:flex;align-items:center;justify-content:space-between;gap:18px;flex-wrap:wrap;
  font-size:13px;color:var(--c-text-3);
}
.footer-links{display:flex;gap:18px;flex-wrap:wrap}
.footer-links a{color:var(--c-text-3);transition:color var(--ease)}
.footer-links a:hover{color:var(--c-accent)}

/* ============ 响应式 ============ */
@media (max-width:1024px){
  .main-nav,.more-wrap{display:none}
  .nav-toggle{display:inline-flex}
  .banner-inner{flex-direction:column;align-items:flex-start;padding:38px 0}
  .banner-text h1{font-size:34px}
  .banner-stats{width:100%}
  .mini-stat{flex:1;min-width:0}
  .cat-layout{grid-template-columns:1fr;gap:24px}
  .filter-panel{
    position:static;display:flex;gap:20px;overflow-x:auto;
    padding:16px;scroll-snap-type:x proximity;
  }
  .filter-panel > .filter-head{display:none}
  .filter-group{flex:0 0 auto;min-width:220px;scroll-snap-align:start}
  .filter-group + .filter-group{margin-top:0;padding-top:0;border-top:none;padding-left:20px;border-left:1px dashed rgba(126,178,255,.18)}
  .match-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .stat-band{grid-template-columns:repeat(2,1fr)}
  .cta-panel{flex-direction:column;align-items:flex-start;padding:40px 28px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:768px){
  .section{padding:56px 0}
  .section-head{flex-direction:column;align-items:flex-start;margin-bottom:28px}
  .section-head h2{font-size:24px}
  .banner-text h1{font-size:28px}
  .banner-stats{flex-direction:column}
  .cta-panel h2{font-size:24px}
}
@media (max-width:640px){
  .container{padding:0 16px}
  .header-actions .btn-primary{display:none}
  .match-grid{grid-template-columns:1fr}
  .stat-band{grid-template-columns:1fr}
  .stat-cell b{font-size:28px}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .pager a,.pager span{min-width:42px;height:42px;padding:0 12px}
  .faq-answer{padding-left:0}
}

/* roulang page: category2 */
:root{
  --c-bg:#050A14;
  --c-surface:#0B1524;
  --c-surface-2:#122236;
  --c-line:rgba(126,178,255,.16);
  --c-primary:#2F6BFF;
  --c-primary-700:#1B47C9;
  --c-accent:#00E3C2;
  --c-hot:#FF8A3D;
  --c-text:#E8F1FF;
  --c-text-2:#9FB4CE;
  --c-text-3:#6B8099;
  --c-ok:#22C55E;
  --c-warn:#F5C451;
  --c-danger:#FF5A5A;
  --r-card:16px;
  --r-panel:20px;
  --r-btn:12px;
  --r-img:14px;
  --r-pill:999px;
  --sh-card:0 10px 30px -12px rgba(0,0,0,.72);
  --sh-glow:0 0 0 1px rgba(0,227,194,.35), 0 10px 28px -8px rgba(0,227,194,.45);
  --ease:cubic-bezier(.2,.8,.2,1);
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;}
body{
  margin:0;
  background-color:var(--c-bg);
  color:var(--c-text);
  font-family:"HarmonyOS Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",Inter,system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.85;
  letter-spacing:.01em;
  overflow-x:hidden;
}
body::before{
  content:"";position:fixed;inset:0;z-index:0;pointer-events:none;
  background:
    radial-gradient(900px 620px at 90% -6%, rgba(47,107,255,.12), transparent 62%),
    radial-gradient(880px 700px at -8% 102%, rgba(0,227,194,.09), transparent 62%);
}
body::after{
  content:"";position:fixed;inset:0;z-index:0;pointer-events:none;opacity:.03;
  background-image:
    linear-gradient(rgba(255,255,255,.65) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.65) 1px, transparent 1px);
  background-size:24px 24px;
}
img{max-width:100%;display:block;border-style:none;}
a{color:inherit;text-decoration:none;}
button{font-family:inherit;font-size:inherit;color:inherit;background:none;border:none;cursor:pointer;}
h1,h2,h3,h4,p,ul,ol,dl,dd,figure{margin:0;}
ul,ol{padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--c-accent);outline-offset:2px;border-radius:6px;}
.num{font-variant-numeric:tabular-nums;font-feature-settings:"tnum" 1;}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;position:relative;z-index:1;}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 22px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;line-height:1;letter-spacing:.01em;
  border:1px solid transparent;white-space:nowrap;
  transition:transform 180ms var(--ease),box-shadow 180ms var(--ease),background 180ms var(--ease),filter 180ms var(--ease),border-color 180ms var(--ease);
}
.btn-primary{
  background:linear-gradient(135deg,#00E3C2,#12B9A1);
  color:#04121A;
  box-shadow:0 10px 26px -12px rgba(0,227,194,.85);
}
.btn-primary:hover{filter:brightness(1.08);transform:translateY(-2px);box-shadow:0 0 0 1px rgba(0,227,194,.5),0 14px 32px -10px rgba(0,227,194,.62);}
.btn-primary:active{transform:translateY(1px);box-shadow:0 6px 16px -10px rgba(0,227,194,.7);}
.btn-ghost{
  background:rgba(255,255,255,.045);
  border-color:var(--c-line);
  color:var(--c-text);
  backdrop-filter:blur(14px) saturate(140%);
}
.btn-ghost:hover{border-color:rgba(0,227,194,.45);color:#fff;transform:translateY(-2px);background:rgba(0,227,194,.08);}
.btn-sm{min-height:38px;padding:0 16px;font-size:14px;border-radius:10px;}
.btn-text{display:inline-flex;align-items:center;gap:6px;font-size:15px;font-weight:600;color:var(--c-accent);}
.btn-text .arw{transition:transform 180ms var(--ease);}
.btn-text:hover .arw{transform:translateX(3px);}

/* ============ 标签 / 徽章 ============ */
.pill{
  display:inline-flex;align-items:center;gap:6px;
  padding:6px 12px;border-radius:var(--r-pill);
  font-size:12px;line-height:1.6;font-weight:600;
  background:rgba(0,227,194,.10);color:var(--c-accent);
  border:1px solid rgba(0,227,194,.22);
}
.pill-hot{background:rgba(255,138,61,.12);color:var(--c-hot);border-color:rgba(255,138,61,.3);}
.pill-mute{background:rgba(255,255,255,.05);color:var(--c-text-2);border-color:var(--c-line);}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(5,10,20,.74);
  backdrop-filter:blur(14px) saturate(140%);
  border-bottom:1px solid transparent;
  transition:background 200ms var(--ease),border-color 200ms var(--ease),box-shadow 200ms var(--ease);
}
.site-header.scrolled{
  background:rgba(5,10,20,.94);
  border-bottom-color:rgba(0,227,194,.22);
  box-shadow:0 12px 34px -22px rgba(0,227,194,.55);
}
.header-inner{display:flex;align-items:center;gap:18px;height:64px;transition:height 200ms var(--ease);}
.site-header.scrolled .header-inner{height:56px;}
.logo{display:flex;align-items:center;gap:10px;min-width:120px;flex:0 0 auto;}
.logo-mark{width:32px;height:32px;flex:0 0 auto;display:block;}
.logo-mark svg{width:100%;height:100%;display:block;filter:drop-shadow(0 0 8px rgba(0,227,194,.5));}
.logo-text{font-size:19px;font-weight:700;letter-spacing:-.02em;color:var(--c-text);}
.main-nav{display:flex;align-items:center;gap:4px;}
.main-nav a{
  position:relative;padding:9px 13px;border-radius:10px;
  font-size:14.5px;font-weight:500;color:var(--c-text-2);
  transition:color 180ms var(--ease),background 180ms var(--ease);
}
.main-nav a:hover{color:var(--c-text);background:rgba(255,255,255,.05);}
.main-nav a.active{color:#fff;font-weight:600;}
.main-nav a.active::after{
  content:"";position:absolute;left:13px;right:13px;bottom:1px;height:2px;
  background:var(--c-accent);border-radius:2px;box-shadow:0 0 10px rgba(0,227,194,.85);
}
.header-actions{margin-left:auto;display:flex;align-items:center;gap:10px;}

.mega-wrap{position:relative;}
.mega-toggle{
  display:inline-flex;align-items:center;gap:6px;height:38px;padding:0 14px;border-radius:10px;
  font-size:14px;font-weight:600;color:var(--c-text-2);
  border:1px solid var(--c-line);background:rgba(255,255,255,.035);
  transition:color 180ms var(--ease),border-color 180ms var(--ease);
}
.mega-toggle:hover,.mega-wrap:focus-within .mega-toggle{color:#fff;border-color:rgba(0,227,194,.45);}
.mega-toggle svg{width:14px;height:14px;transition:transform 180ms var(--ease);}
.mega-wrap:hover .mega-toggle svg,.mega-wrap:focus-within .mega-toggle svg{transform:rotate(180deg);}
.mega-panel{
  position:absolute;right:0;top:calc(100% + 14px);width:720px;
  display:grid;grid-template-columns:1.05fr 1fr 1fr;gap:22px;
  padding:22px;border-radius:var(--r-panel);
  background:rgba(11,21,36,.97);
  backdrop-filter:blur(14px) saturate(140%);
  border:1px solid rgba(0,227,194,.26);
  box-shadow:0 28px 64px -26px rgba(0,0,0,.92);
  opacity:0;visibility:hidden;transform:translateY(-6px);
  transition:opacity 160ms var(--ease),transform 160ms var(--ease),visibility 160ms;
}
.mega-wrap:hover .mega-panel,.mega-wrap:focus-within .mega-panel,.mega-wrap.open .mega-panel{
  opacity:1;visibility:visible;transform:translateY(0);
}
.mega-col h4{
  font-size:14px;font-weight:700;color:var(--c-accent);letter-spacing:.02em;margin-bottom:12px;
}
.mega-list li + li{margin-top:2px;}
.mega-list a{
  display:flex;align-items:center;gap:8px;padding:7px 8px;border-radius:9px;
  font-size:14px;color:var(--c-text-2);transition:color 180ms var(--ease),background 180ms var(--ease);
}
.mega-list a:hover{color:#fff;background:rgba(255,255,255,.055);}
.mega-list a .dot{width:6px;height:6px;border-radius:50%;background:var(--c-accent);flex:0 0 auto;opacity:.75;}
.mega-news a{display:block;padding:8px;border-radius:10px;transition:background 180ms var(--ease);}
.mega-news a:hover{background:rgba(255,255,255,.055);}
.mega-news .t{font-size:13.5px;color:var(--c-text);line-height:1.55;display:block;}
.mega-news .d{font-size:12px;color:var(--c-text-3);margin-top:2px;display:block;}
.mega-cards{display:flex;flex-direction:column;gap:12px;}
.mega-card{
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  padding:14px;border-radius:14px;
  background:rgba(255,255,255,.045);border:1px solid var(--c-line);
  transition:border-color 180ms var(--ease),transform 180ms var(--ease);
}
.mega-card:hover{border-color:rgba(0,227,194,.42);transform:translateY(-2px);}
.mega-card b{display:block;font-size:14px;color:var(--c-text);}
.mega-card span{display:block;font-size:12.5px;color:var(--c-text-3);margin-top:2px;}
.mega-card .arw{color:var(--c-accent);font-size:18px;line-height:1;}

.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;
  border:1px solid var(--c-line);background:rgba(255,255,255,.04);
  align-items:center;justify-content:center;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--c-text);border-radius:2px;position:relative;}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--c-text);border-radius:2px;
  transition:transform 180ms var(--ease);
}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}

.mobile-drawer{
  position:fixed;left:0;right:0;top:64px;z-index:55;
  max-height:88vh;overflow-y:auto;
  background:rgba(5,10,20,.985);
  backdrop-filter:blur(16px) saturate(140%);
  border-bottom:1px solid rgba(0,227,194,.2);
  padding:18px 20px 26px;
  opacity:0;visibility:hidden;transform:translateY(-10px);
  transition:opacity 180ms var(--ease),transform 180ms var(--ease),visibility 180ms;
}
.mobile-drawer.open{opacity:1;visibility:visible;transform:translateY(0);}
.mobile-drawer a.m-link{
  display:flex;align-items:center;justify-content:space-between;
  min-height:52px;padding:0 4px;font-size:16px;color:var(--c-text-2);
  border-bottom:1px solid rgba(126,178,255,.12);
}
.mobile-drawer a.m-link.active{color:var(--c-accent);font-weight:600;}
.mobile-drawer .m-cta{display:flex;flex-direction:column;gap:10px;margin-top:18px;}
.mobile-drawer .m-cta .btn{width:100%;}

/* ============ 分类首屏 ============ */
.cat-hero{
  position:relative;padding:74px 0 56px;
  background-image:linear-gradient(180deg, rgba(5,10,20,.80), rgba(5,10,20,.93)), url('/assets/images/backpic/back-2.png');
  background-size:cover;background-position:center;
  border-bottom:1px solid var(--c-line);
}
.cat-hero::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(0,227,194,.5),transparent);
}
.cat-hero-inner{display:grid;grid-template-columns:minmax(0,1.55fr) minmax(0,1fr);gap:48px;align-items:center;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;font-weight:700;letter-spacing:.16em;color:var(--c-accent);
  text-transform:uppercase;margin-bottom:14px;
}
.eyebrow::before{content:"";width:22px;height:1px;background:var(--c-accent);display:block;}
.cat-hero h1{
  font-size:44px;line-height:1.2;font-weight:700;letter-spacing:-.02em;
  margin-bottom:16px;
}
.cat-hero h1 em{font-style:normal;color:var(--c-accent);}
.cat-hero p.lead{font-size:16px;line-height:1.9;color:var(--c-text-2);max-width:640px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px;}
.hero-stats{display:grid;gap:14px;}
.stat-card{
  padding:18px;border-radius:var(--r-card);
  background:rgba(255,255,255,.045);
  border:1px solid var(--c-line);
  backdrop-filter:blur(14px) saturate(140%);
  box-shadow:var(--sh-card);
}
.stat-card .v{font-size:30px;font-weight:700;color:var(--c-accent);line-height:1.2;}
.stat-card .v small{font-size:14px;font-weight:600;color:var(--c-text-2);margin-left:4px;}
.stat-card .l{font-size:13.5px;color:var(--c-text-3);margin-top:4px;}

/* ============ 标签条 ============ */
.tag-strip{border-bottom:1px solid var(--c-line);background:rgba(11,21,36,.55);}
.tag-strip .inner{
  display:flex;gap:10px;align-items:center;overflow-x:auto;
  padding:16px 0;scrollbar-width:none;scroll-snap-type:x proximity;
}
.tag-strip .inner::-webkit-scrollbar{display:none;}
.tag{
  flex:0 0 auto;scroll-snap-align:start;
  display:inline-flex;align-items:center;min-height:36px;padding:0 16px;
  border-radius:var(--r-pill);font-size:13.5px;font-weight:600;
  color:var(--c-text-2);border:1px solid var(--c-line);background:rgba(255,255,255,.035);
  transition:color 180ms var(--ease),border-color 180ms var(--ease),background 180ms var(--ease);
}
.tag:hover{color:#fff;border-color:rgba(0,227,194,.45);background:rgba(0,227,194,.08);}
.tag.on{background:rgba(0,227,194,.12);border-color:rgba(0,227,194,.42);color:var(--c-accent);}

/* ============ 通用板块 ============ */
.section{padding:88px 0;}
.section.tight{padding:64px 0;}
.section-head{max-width:760px;margin-bottom:36px;}
.section-head h2{
  font-size:32px;line-height:1.35;font-weight:700;letter-spacing:-.02em;margin-bottom:12px;
  position:relative;padding-left:16px;
}
.section-head h2::before{
  content:"";position:absolute;left:0;top:8px;bottom:8px;width:3px;border-radius:3px;
  background:linear-gradient(180deg,var(--c-accent),rgba(0,227,194,.15));
}
.section-head p{font-size:15.5px;color:var(--c-text-2);}

/* ============ 交替图文行 ============ */
.alt-list{border-top:1px solid var(--c-line);}
.alt-row{
  display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);
  gap:56px;align-items:center;
  padding:56px 0;border-bottom:1px solid var(--c-line);
}
.alt-row.reverse .alt-media{order:2;}
.alt-media{position:relative;}
.alt-media img{
  width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--r-img);
  border:1px solid rgba(0,227,194,.28);
  box-shadow:0 18px 44px -20px rgba(0,227,194,.42), var(--sh-card);
  transition:transform 220ms var(--ease),box-shadow 220ms var(--ease);
}
.alt-row:hover .alt-media img{transform:translateY(-4px);box-shadow:0 0 0 1px rgba(0,227,194,.4),0 22px 50px -18px rgba(0,227,194,.5);}
.alt-media .idx{
  position:absolute;left:14px;top:14px;
  display:inline-flex;align-items:center;justify-content:center;
  min-width:44px;height:30px;padding:0 10px;border-radius:var(--r-pill);
  background:rgba(5,10,20,.78);border:1px solid rgba(0,227,194,.35);
  font-size:13px;font-weight:700;color:var(--c-accent);
}
.alt-body h3{font-size:22px;line-height:1.5;font-weight:600;margin:14px 0 14px;}
.alt-body p{font-size:15.5px;color:var(--c-text-2);margin-bottom:12px;}
.alt-body p:last-of-type{margin-bottom:18px;}
.alt-meta{display:flex;flex-wrap:wrap;gap:8px;align-items:center;}
.alt-foot{display:flex;align-items:center;gap:18px;flex-wrap:wrap;}
.alt-foot .mini{font-size:13px;color:var(--c-text-3);}

/* ============ 结算口径速查 ============ */
.spec-band{background:rgba(11,21,36,.6);border-top:1px solid var(--c-line);border-bottom:1px solid var(--c-line);}
.spec-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:28px;}
.spec-group{
  padding:24px;border-radius:var(--r-card);
  background:rgba(255,255,255,.04);
  border:1px solid var(--c-line);
  backdrop-filter:blur(14px) saturate(140%);
  box-shadow:var(--sh-card);
  transition:border-color 180ms var(--ease),transform 180ms var(--ease);
}
.spec-group:hover{border-color:rgba(0,227,194,.4);transform:translateY(-3px);}
.spec-group h3{font-size:17px;font-weight:600;margin-bottom:14px;display:flex;align-items:center;gap:8px;}
.spec-group h3 .bar{width:3px;height:16px;border-radius:3px;background:var(--c-accent);display:block;}
.spec-item{
  display:flex;align-items:baseline;justify-content:space-between;gap:16px;
  padding:11px 0;border-bottom:1px dashed rgba(126,178,255,.16);
}
.spec-item:last-child{border-bottom:none;}
.spec-item dt{font-size:14px;color:var(--c-text-3);}
.spec-item dd{font-size:14.5px;font-weight:600;color:var(--c-accent);text-align:right;}

/* ============ 阅读提示 ============ */
.note-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px;}
.note{
  padding:20px;border-radius:var(--r-card);
  background:rgba(255,255,255,.04);border:1px solid var(--c-line);
  transition:transform 180ms var(--ease),border-color 180ms var(--ease);
}
.note:hover{transform:translateY(-4px);border-color:rgba(0,227,194,.38);}
.note .n{font-size:13px;font-weight:700;color:var(--c-hot);letter-spacing:.08em;margin-bottom:8px;}
.note h3{font-size:16px;font-weight:600;margin-bottom:8px;}
.note p{font-size:14px;color:var(--c-text-2);line-height:1.8;}

/* ============ FAQ ============ */
.faq-wrap{max-width:920px;}
.faq-item{border-bottom:1px solid rgba(126,178,255,.16);}
.faq-item summary{
  list-style:none;cursor:pointer;
  display:flex;align-items:center;gap:14px;
  min-height:56px;padding:14px 0;
  font-size:17px;font-weight:600;color:var(--c-text);
  transition:color 180ms var(--ease);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary:hover{color:var(--c-accent);}
.faq-no{font-size:13px;font-weight:700;color:var(--c-accent);letter-spacing:.06em;flex:0 0 auto;}
.faq-q{flex:1 1 auto;}
.faq-icon{
  position:relative;width:20px;height:20px;flex:0 0 auto;
}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;background:var(--c-accent);border-radius:2px;
  transition:transform 180ms var(--ease),opacity 180ms var(--ease);
}
.faq-icon::before{left:0;top:9px;width:20px;height:2px;}
.faq-icon::after{top:0;left:9px;width:2px;height:20px;}
.faq-item[open] .faq-icon::after{transform:rotate(90deg);opacity:0;}
.faq-a{padding:0 0 22px 42px;}
.faq-a p{font-size:15px;line-height:1.9;color:var(--c-text-2);}

/* ============ CTA ============ */
.cta-band{padding:24px 0 88px;}
.cta-card{
  display:grid;grid-template-columns:minmax(0,1fr) auto;gap:32px;align-items:center;
  padding:38px;border-radius:var(--r-panel);
  background:
    radial-gradient(600px 220px at 88% 0%, rgba(0,227,194,.16), transparent 70%),
    rgba(255,255,255,.045);
  border:1px solid rgba(0,227,194,.35);
  backdrop-filter:blur(14px) saturate(140%);
  box-shadow:var(--sh-glow);
}
.cta-card h2{font-size:28px;line-height:1.4;font-weight:700;letter-spacing:-.02em;margin-bottom:10px;}
.cta-card p{font-size:15.5px;color:var(--c-text-2);max-width:620px;}
.cta-actions{display:flex;flex-direction:column;gap:12px;align-items:stretch;min-width:200px;}

/* ============ 页脚 ============ */
.site-footer{
  border-top:1px solid var(--c-line);
  background:rgba(11,21,36,.72);
  padding:64px 0 28px;
}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:36px;}
.footer-brand .logo{margin-bottom:14px;}
.footer-brand p{font-size:14px;color:var(--c-text-2);max-width:320px;line-height:1.85;}
.footer-col h4{font-size:14px;font-weight:700;color:var(--c-accent);letter-spacing:.02em;margin-bottom:16px;}
.footer-col ul li{margin-bottom:10px;}
.footer-col ul li a{font-size:14px;color:var(--c-text-2);transition:color 180ms var(--ease),transform 180ms var(--ease);display:inline-block;}
.footer-col ul li a:hover{color:var(--c-text);transform:translateX(2px);}
.footer-contact p{font-size:14px;color:var(--c-text-2);margin-bottom:10px;line-height:1.8;}
.footer-contact b{color:var(--c-accent);font-weight:600;}
.footer-bottom{
  margin-top:44px;padding-top:22px;border-top:1px solid rgba(126,178,255,.14);
  display:flex;flex-wrap:wrap;gap:14px;align-items:center;justify-content:space-between;
}
.footer-bottom span{font-size:13px;color:var(--c-text-3);}
.footer-links{display:flex;flex-wrap:wrap;gap:16px;}
.footer-links a{font-size:13px;color:var(--c-text-3);transition:color 180ms var(--ease);}
.footer-links a:hover{color:var(--c-accent);}

/* ============ 响应式 ============ */
@media (max-width:1024px){
  .main-nav{display:none;}
  .mega-wrap{display:none;}
  .nav-toggle{display:inline-flex;}
  .cat-hero-inner{grid-template-columns:1fr;gap:32px;}
  .cat-hero h1{font-size:34px;}
  .alt-row{gap:32px;padding:44px 0;}
  .spec-grid{grid-template-columns:1fr;gap:18px;}
  .note-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:28px;}
}
@media (max-width:768px){
  .container{padding:0 16px;}
  .section{padding:56px 0;}
  .section.tight{padding:48px 0;}
  .cat-hero{padding:52px 0 40px;}
  .cat-hero h1{font-size:28px;}
  .cat-hero p.lead{font-size:15px;}
  .section-head h2{font-size:24px;}
  .alt-row{grid-template-columns:1fr;gap:22px;}
  .alt-row.reverse .alt-media{order:0;}
  .alt-body h3{font-size:19px;}
  .cta-card{grid-template-columns:1fr;padding:26px;gap:22px;}
  .cta-card h2{font-size:23px;}
  .cta-actions{flex-direction:row;flex-wrap:wrap;min-width:0;}
  .cta-actions .btn{flex:1 1 auto;}
  .faq-item summary{font-size:16px;gap:10px;}
  .faq-a{padding-left:0;}
  .header-actions .btn-sm{display:none;}
  .site-header .header-inner{height:60px;}
  .mobile-drawer{top:60px;}
}
@media (max-width:520px){
  .note-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;}
  .hero-actions .btn{width:100%;}
  .stat-card .v{font-size:26px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}

/* roulang page: category3 */
:root{
    --c-bg:#050A14;
    --c-surface:#0B1524;
    --c-surface-2:#122236;
    --c-line:rgba(126,178,255,.16);
    --c-primary:#2F6BFF;
    --c-primary-700:#1B47C9;
    --c-accent:#00E3C2;
    --c-hot:#FF8A3D;
    --c-text:#E8F1FF;
    --c-text-2:#9FB4CE;
    --c-text-3:#6B8099;
    --c-ok:#22C55E;
    --r-card:16px;
    --r-panel:20px;
    --r-btn:12px;
    --r-img:14px;
    --shadow-card:0 10px 30px -12px rgba(0,0,0,.72);
    --shadow-glow:0 0 0 1px rgba(0,227,194,.35), 0 10px 28px -8px rgba(0,227,194,.45);
    --ease:180ms cubic-bezier(.2,.8,.2,1);
  }
  *{box-sizing:border-box;}
  html{-webkit-text-size-adjust:100%;}
  .site-body{
    margin:0;
    background:var(--c-bg);
    color:var(--c-text);
    font-family:"HarmonyOS Sans SC","Source Han Sans SC","Noto Sans SC","PingFang SC","Microsoft YaHei",ui-sans-serif,system-ui,sans-serif;
    font-size:16px;
    line-height:1.85;
    -webkit-font-smoothing:antialiased;
    overflow-x:hidden;
  }
  .site-body::before{
    content:"";
    position:fixed;
    inset:0;
    pointer-events:none;
    z-index:0;
    background:
      radial-gradient(900px 620px at 88% -8%, rgba(47,107,255,.12), transparent 62%),
      radial-gradient(760px 520px at -6% 102%, rgba(0,227,194,.09), transparent 60%),
      repeating-linear-gradient(0deg, rgba(126,178,255,.03) 0 1px, transparent 1px 24px),
      repeating-linear-gradient(90deg, rgba(126,178,255,.03) 0 1px, transparent 1px 24px);
  }
  .page-shell{position:relative;z-index:1;}
  img{max-width:100%;display:block;}
  a{color:inherit;}
  button{font-family:inherit;}
  h1,h2,h3,h4{margin:0;letter-spacing:-.02em;}
  p{margin:0;}

  .container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}

  /* ---------- Header ---------- */
  .site-header{
    position:sticky;top:0;z-index:60;
    background:rgba(5,10,20,.74);
    backdrop-filter:blur(14px) saturate(140%);
    -webkit-backdrop-filter:blur(14px) saturate(140%);
    border-bottom:1px solid transparent;
    transition:background var(--ease), border-color var(--ease), box-shadow var(--ease);
  }
  .site-header.is-scrolled{
    background:rgba(5,10,20,.94);
    border-bottom-color:rgba(0,227,194,.22);
    box-shadow:0 14px 34px -22px rgba(0,0,0,.95);
  }
  .header-inner{display:flex;align-items:center;gap:24px;height:72px;transition:height var(--ease);}
  .site-header.is-scrolled .header-inner{height:60px;}
  .logo{display:inline-flex;align-items:center;gap:10px;min-width:120px;text-decoration:none;color:var(--c-text);flex:none;}
  .logo-mark{width:34px;height:34px;flex:none;}
  .logo-mark svg{width:100%;height:100%;display:block;}
  .logo-text{font-size:19px;font-weight:700;letter-spacing:-.02em;white-space:nowrap;}
  .main-nav{display:flex;align-items:center;gap:4px;}
  .main-nav a{
    position:relative;display:inline-flex;align-items:center;height:44px;padding:0 14px;
    border-radius:10px;color:var(--c-text-2);font-size:15px;text-decoration:none;
    transition:color var(--ease), background var(--ease);
  }
  .main-nav a:hover{color:var(--c-text);background:rgba(255,255,255,.045);}
  .main-nav a.active{color:var(--c-text);font-weight:600;}
  .main-nav a.active::after{
    content:"";position:absolute;left:14px;right:14px;bottom:5px;height:2px;border-radius:2px;
    background:var(--c-accent);box-shadow:0 0 10px rgba(0,227,194,.7);
  }
  .header-actions{margin-left:auto;display:flex;align-items:center;gap:10px;}
  .mega-wrap{position:relative;}
  .mega-trigger{
    display:inline-flex;align-items:center;gap:8px;height:44px;padding:0 16px;border-radius:12px;
    border:1px solid var(--c-line);background:rgba(255,255,255,.045);color:var(--c-text-2);
    font-size:15px;cursor:pointer;transition:color var(--ease), border-color var(--ease), background var(--ease);
  }
  .mega-trigger:hover,.mega-trigger:focus-visible{color:var(--c-text);border-color:rgba(0,227,194,.45);background:rgba(0,227,194,.06);}
  .mega-trigger i{font-size:11px;transition:transform var(--ease);}
  .mega-wrap:hover .mega-trigger i{transform:rotate(180deg);}
  .mega-panel{
    position:absolute;right:0;top:calc(100% + 12px);width:720px;padding:22px;border-radius:var(--r-panel);
    background:linear-gradient(180deg,rgba(18,34,54,.97),rgba(9,17,30,.99));
    border:1px solid rgba(0,227,194,.24);
    box-shadow:0 32px 64px -26px rgba(0,0,0,.95);
    opacity:0;visibility:hidden;transform:translateY(-6px);
    transition:opacity 160ms ease, transform 160ms ease, visibility 160ms ease;
  }
  .mega-wrap:hover .mega-panel,.mega-wrap:focus-within .mega-panel{opacity:1;visibility:visible;transform:translateY(0);}
  .mega-grid{display:grid;grid-template-columns:1.1fr 1.3fr 1fr;gap:22px;}
  .mega-col-title{font-size:12px;letter-spacing:.14em;text-transform:uppercase;color:var(--c-accent);margin-bottom:12px;}
  .mega-list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:4px;}
  .mega-list a{
    display:flex;align-items:center;gap:10px;padding:9px 10px;border-radius:10px;
    color:var(--c-text-2);font-size:14px;text-decoration:none;transition:var(--ease);
  }
  .mega-list a:hover{color:var(--c-text);background:rgba(0,227,194,.07);}
  .mega-list a i{color:var(--c-accent);font-size:12px;width:16px;text-align:center;}
  .mega-post{padding:9px 10px;border-radius:10px;transition:var(--ease);display:block;text-decoration:none;}
  .mega-post:hover{background:rgba(0,227,194,.07);}
  .mega-post b{display:block;font-size:14px;font-weight:600;color:var(--c-text);line-height:1.5;}
  .mega-post span{font-size:12px;color:var(--c-text-3);font-variant-numeric:tabular-nums;}
  .mega-card{
    display:block;padding:14px;border-radius:14px;text-decoration:none;
    background:rgba(255,255,255,.045);border:1px solid rgba(255,255,255,.08);
    transition:var(--ease);margin-bottom:10px;
  }
  .mega-card:hover{border-color:rgba(0,227,194,.4);transform:translateY(-2px);}
  .mega-card b{display:block;font-size:14px;color:var(--c-text);margin-bottom:2px;}
  .mega-card span{font-size:12px;color:var(--c-text-3);line-height:1.6;}
  .mega-card i{color:var(--c-accent);font-size:12px;margin-left:6px;}

  .nav-toggle-input{position:absolute;opacity:0;pointer-events:none;width:0;height:0;}
  .nav-toggle{
    display:none;width:44px;height:44px;align-items:center;justify-content:center;
    border-radius:12px;border:1px solid var(--c-line);background:rgba(255,255,255,.045);
    color:var(--c-text);cursor:pointer;font-size:16px;
  }
  .mobile-drawer{display:none;}

  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:9px;
    min-height:44px;padding:0 22px;border-radius:var(--r-btn);
    font-size:15px;font-weight:600;text-decoration:none;cursor:pointer;border:1px solid transparent;
    transition:transform var(--ease), box-shadow var(--ease), background var(--ease), border-color var(--ease), color var(--ease);
    white-space:nowrap;
  }
  .btn:active{transform:translateY(1px);}
  .btn:focus-visible{outline:2px solid var(--c-accent);outline-offset:2px;}
  .btn-primary{background:var(--c-accent);color:#04121A;box-shadow:0 0 0 1px rgba(0,227,194,.4),0 10px 26px -10px rgba(0,227,194,.55);}
  .btn-primary:hover{background:#3BF2D6;box-shadow:0 0 0 1px rgba(0,227,194,.6),0 14px 32px -10px rgba(0,227,194,.75);}
  .btn-ghost{background:rgba(255,255,255,.045);border-color:rgba(255,255,255,.12);color:var(--c-text);backdrop-filter:blur(10px);}
  .btn-ghost:hover{border-color:rgba(0,227,194,.5);color:#fff;background:rgba(0,227,194,.08);}
  .btn-text{display:inline-flex;align-items:center;gap:8px;color:var(--c-accent);font-size:15px;font-weight:600;text-decoration:none;padding:10px 0;}
  .btn-text i{transition:transform var(--ease);font-size:12px;}
  .btn-text:hover i{transform:translateX(3px);}
  .btn-sm{min-height:40px;padding:0 18px;font-size:14px;}

  .badge{
    display:inline-flex;align-items:center;gap:7px;padding:6px 12px;border-radius:999px;
    font-size:12px;line-height:1.4;background:rgba(0,227,194,.10);color:var(--c-accent);
    border:1px solid rgba(0,227,194,.22);letter-spacing:.04em;
  }
  .badge-hot{background:rgba(255,138,61,.12);color:var(--c-hot);border-color:rgba(255,138,61,.28);}

  /* ---------- Hero ---------- */
  .hero-cat{position:relative;overflow:hidden;padding:56px 0 60px;border-bottom:1px solid var(--c-line);}
  .hero-cat-bg{position:absolute;inset:0;background:url('/assets/images/backpic/back-1.png') center/cover no-repeat;}
  .hero-cat-bg::after{
    content:"";position:absolute;inset:0;
    background:linear-gradient(180deg,rgba(5,10,20,.80),rgba(5,10,20,.88));
  }
  .hero-cat-inner{position:relative;z-index:2;display:grid;grid-template-columns:1.5fr 1fr;gap:44px;align-items:end;}
  .crumb{display:flex;align-items:center;gap:9px;font-size:13px;color:var(--c-text-3);margin-bottom:20px;}
  .crumb a{color:var(--c-text-3);text-decoration:none;transition:var(--ease);}
  .crumb a:hover{color:var(--c-accent);}
  .crumb-cur{color:var(--c-text-2);}
  .hero-title{font-size:44px;line-height:1.2;font-weight:700;letter-spacing:-.02em;margin:18px 0 16px;}
  .hero-title em{font-style:normal;color:var(--c-accent);}
  .hero-sub{max-width:640px;font-size:17px;line-height:1.85;color:var(--c-text-2);}
  .hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px;}
  .hero-stats{display:grid;grid-template-columns:1fr 1fr;gap:14px;}
  .stat-card{
    padding:18px;border-radius:var(--r-card);
    background:rgba(255,255,255,.045);border:1px solid rgba(255,255,255,.08);
    backdrop-filter:blur(14px) saturate(140%);box-shadow:var(--shadow-card), inset 0 1px 0 rgba(255,255,255,.06);
  }
  .stat-num{display:block;font-size:26px;font-weight:700;color:var(--c-accent);font-variant-numeric:tabular-nums;line-height:1.3;}
  .stat-cap{font-size:13px;color:var(--c-text-3);}

  /* ---------- Section base ---------- */
  .section{padding:88px 0;}
  .section-tight{padding:60px 0 88px;}
  .section-head{margin-bottom:36px;max-width:760px;}
  .section-title{font-size:32px;line-height:1.35;font-weight:700;}
  .section-desc{margin-top:12px;font-size:16px;color:var(--c-text-2);line-height:1.85;}
  .eyebrow{font-size:12px;letter-spacing:.16em;text-transform:uppercase;color:var(--c-accent);margin-bottom:10px;display:block;}

  /* ---------- Device cards ---------- */
  .device-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
  .device-card{
    display:flex;flex-direction:column;padding:26px;border-radius:var(--r-panel);
    background:linear-gradient(180deg,rgba(18,34,54,.92),rgba(9,17,30,.96));
    border:1px solid var(--c-line);box-shadow:var(--shadow-card), inset 0 1px 0 rgba(255,255,255,.06);
    transition:transform var(--ease), border-color var(--ease), box-shadow var(--ease);
  }
  .device-card:hover{transform:translateY(-4px);border-color:rgba(0,227,194,.32);box-shadow:0 20px 44px -18px rgba(0,0,0,.9), inset 0 1px 0 rgba(255,255,255,.06);}
  .device-icon{
    width:52px;height:52px;border-radius:14px;display:grid;place-items:center;font-size:22px;
    background:rgba(0,227,194,.10);border:1px solid rgba(0,227,194,.28);color:var(--c-accent);margin-bottom:16px;
  }
  .device-name{font-size:22px;font-weight:700;}
  .device-desc{margin-top:10px;font-size:14.5px;color:var(--c-text-2);line-height:1.8;}
  .spec-list{list-style:none;margin:18px 0 0;padding:0;border-top:1px dashed rgba(126,178,255,.22);}
  .spec-list li{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:9px 0;border-bottom:1px dashed rgba(126,178,255,.22);font-size:14px;}
  .spec-list .k{color:var(--c-text-3);}
  .spec-list .v{color:var(--c-accent);font-weight:600;font-variant-numeric:tabular-nums;}
  .device-card .btn{margin-top:22px;width:100%;}

  /* ---------- Steps ---------- */
  .steps-wrap{display:grid;grid-template-columns:1.35fr 1fr;gap:48px;align-items:start;}
  .steps{list-style:none;margin:0;padding:0;}
  .step{position:relative;padding:0 0 34px 62px;}
  .step::before{
    content:"";position:absolute;left:17px;top:40px;bottom:6px;width:1px;
    background:linear-gradient(180deg,rgba(0,227,194,.5),rgba(126,178,255,.08));
  }
  .step:last-child{padding-bottom:0;}
  .step:last-child::before{display:none;}
  .step-num{
    position:absolute;left:0;top:0;width:36px;height:36px;border-radius:50%;
    display:grid;place-items:center;font-size:13px;font-weight:700;
    background:rgba(0,227,194,.10);border:1px solid rgba(0,227,194,.45);color:var(--c-accent);
    font-variant-numeric:tabular-nums;
  }
  .step-title{font-size:20px;font-weight:600;line-height:1.5;}
  .step-text{margin-top:8px;font-size:15px;color:var(--c-text-2);line-height:1.85;}
  .side-figure{
    position:sticky;top:96px;border-radius:var(--r-panel);overflow:hidden;
    border:1px solid var(--c-line);background:var(--c-surface-2);box-shadow:var(--shadow-card);
  }
  .side-figure img{width:100%;height:260px;object-fit:cover;border-radius:0;}
  .side-figure-body{padding:20px;}
  .side-figure-body h3{font-size:17px;font-weight:600;}
  .side-figure-body p{margin-top:8px;font-size:14px;color:var(--c-text-2);line-height:1.8;}

  /* ---------- Data strip ---------- */
  .data-strip{
    display:grid;grid-template-columns:repeat(4,1fr);
    border-radius:var(--r-panel);border:1px solid var(--c-line);
    background:rgba(255,255,255,.03);overflow:hidden;
  }
  .data-item{padding:22px 24px;border-right:1px solid var(--c-line);}
  .data-item:last-child{border-right:none;}
  .data-k{display:block;font-size:12px;letter-spacing:.1em;color:var(--c-text-3);margin-bottom:6px;}
  .data-v{display:block;font-size:20px;font-weight:700;color:var(--c-text);font-variant-numeric:tabular-nums;}
  .data-v.accent{color:var(--c-accent);}

  /* ---------- FAQ ---------- */
  .faq-list{border-top:1px solid var(--c-line);max-width:900px;}
  .faq-item{border-bottom:1px solid var(--c-line);}
  .faq-item summary{
    display:flex;align-items:center;gap:16px;min-height:64px;padding:12px 4px;
    cursor:pointer;list-style:none;transition:color var(--ease);
  }
  .faq-item summary::-webkit-details-marker{display:none;}
  .faq-item summary:hover{color:var(--c-accent);}
  .faq-idx{font-size:13px;font-weight:700;color:var(--c-accent);letter-spacing:.08em;font-variant-numeric:tabular-nums;flex:none;}
  .faq-q{flex:1;font-size:17px;font-weight:600;line-height:1.6;}
  .faq-sign{position:relative;width:18px;height:18px;flex:none;}
  .faq-sign::before,.faq-sign::after{
    content:"";position:absolute;background:var(--c-accent);border-radius:2px;
    transition:transform 180ms ease, opacity 180ms ease;
  }
  .faq-sign::before{left:0;top:8px;width:18px;height:2px;}
  .faq-sign::after{left:8px;top:0;width:2px;height:18px;}
  .faq-item[open] .faq-sign::after{transform:rotate(90deg);opacity:0;}
  .faq-a{padding:0 4px 22px 44px;font-size:15px;line-height:1.9;color:var(--c-text-2);}

  /* ---------- CTA ---------- */
  .cta-panel{
    position:relative;overflow:hidden;padding:44px;border-radius:var(--r-panel);
    background:linear-gradient(120deg,rgba(0,227,194,.10),rgba(18,34,54,.94) 42%,rgba(9,17,30,.98));
    border:1px solid rgba(0,227,194,.28);
    box-shadow:0 24px 60px -28px rgba(0,0,0,.95), inset 0 1px 0 rgba(255,255,255,.06);
    display:grid;grid-template-columns:1.6fr auto;gap:32px;align-items:center;
  }
  .cta-panel h2{font-size:28px;line-height:1.4;font-weight:700;}
  .cta-panel p{margin-top:12px;font-size:15.5px;color:var(--c-text-2);max-width:620px;line-height:1.85;}
  .cta-actions{display:flex;flex-direction:column;align-items:flex-start;gap:6px;}

  /* ---------- Footer ---------- */
  .site-footer{
    position:relative;z-index:1;margin-top:20px;padding:64px 0 28px;
    border-top:1px solid var(--c-line);background:rgba(6,12,22,.86);
  }
  .footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:36px;}
  .footer-brand .logo{margin-bottom:14px;}
  .footer-brand p{font-size:14px;color:var(--c-text-3);line-height:1.8;max-width:280px;}
  .footer-col h4{font-size:14px;font-weight:600;color:var(--c-accent);margin-bottom:14px;letter-spacing:.04em;}
  .footer-col ul{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:9px;}
  .footer-col ul a{font-size:14px;color:var(--c-text-2);text-decoration:none;transition:var(--ease);display:inline-block;}
  .footer-col ul a:hover{color:var(--c-text);transform:translateX(2px);}
  .footer-contact p{font-size:13.5px;color:var(--c-text-3);line-height:1.8;margin-bottom:8px;}
  .footer-contact b{color:var(--c-text-2);font-weight:600;}
  .footer-bottom{
    margin-top:44px;padding-top:22px;border-top:1px solid var(--c-line);
    display:flex;flex-wrap:wrap;gap:14px;justify-content:space-between;align-items:center;
    font-size:13px;color:var(--c-text-3);
  }
  .footer-links{display:flex;flex-wrap:wrap;gap:16px;}
  .footer-links a{color:var(--c-text-3);text-decoration:none;transition:var(--ease);}
  .footer-links a:hover{color:var(--c-accent);}

  /* ---------- Responsive ---------- */
  @media (max-width:1023px){
    .main-nav{display:none;}
    .mega-wrap{display:none;}
    .header-cta{display:none;}
    .nav-toggle{display:inline-flex;}
    .nav-toggle-input:checked ~ .mobile-drawer{display:block;}
    .mobile-drawer{
      position:fixed;left:0;right:0;top:64px;max-height:88vh;overflow-y:auto;
      background:rgba(8,15,28,.98);border-top:1px solid var(--c-line);
      padding:14px 20px 26px;z-index:55;
      box-shadow:0 30px 60px -30px rgba(0,0,0,.95);
    }
    .mobile-drawer a.m-link{
      display:flex;align-items:center;justify-content:space-between;min-height:52px;
      padding:0 4px;border-bottom:1px solid var(--c-line);
      color:var(--c-text-2);font-size:16px;text-decoration:none;
    }
    .mobile-drawer a.m-link.active{color:var(--c-accent);font-weight:600;}
    .mobile-cta{display:flex;flex-direction:column;gap:10px;margin-top:20px;}
    .hero-cat-inner{grid-template-columns:1fr;gap:28px;}
    .hero-stats{grid-template-columns:1fr 1fr;}
    .device-grid{grid-template-columns:1fr 1fr;}
    .steps-wrap{grid-template-columns:1fr;gap:32px;}
    .side-figure{position:static;}
    .cta-panel{grid-template-columns:1fr;gap:24px;}
    .footer-grid{grid-template-columns:1fr 1fr;}
  }
  @media (max-width:767px){
    .hero-cat{padding:40px 0 44px;}
    .hero-title{font-size:28px;margin:14px 0 12px;}
    .hero-sub{font-size:15.5px;}
    .section{padding:56px 0;}
    .section-tight{padding:40px 0 56px;}
    .section-title{font-size:24px;}
    .device-grid{grid-template-columns:1fr;}
    .data-strip{grid-template-columns:1fr 1fr;}
    .data-item{border-right:none;border-bottom:1px solid var(--c-line);}
    .data-item:nth-child(odd){border-right:1px solid var(--c-line);}
    .data-item:nth-last-child(-n+2){border-bottom:none;}
    .cta-panel{padding:28px 22px;}
    .cta-panel h2{font-size:22px;}
    .footer-grid{grid-template-columns:1fr;gap:28px;}
    .footer-bottom{flex-direction:column;align-items:flex-start;}
  }
  @media (max-width:519px){
    .container{padding:0 16px;}
    .hero-actions .btn{width:100%;}
    .faq-a{padding-left:4px;}
    .step{padding-left:52px;}
    .step::before{left:15px;}
    .step-num{width:32px;height:32px;}
    .stat-num{font-size:22px;}
  }
  @media (prefers-reduced-motion:reduce){
    *{transition:none !important;}
  }

/* roulang page: category4 */
:root{
  --c-bg:#050A14;
  --c-surface:#0B1524;
  --c-surface-2:#122236;
  --c-line:rgba(126,178,255,.16);
  --c-line-2:rgba(255,255,255,.08);
  --c-primary:#2F6BFF;
  --c-primary-700:#1B47C9;
  --c-accent:#00E3C2;
  --c-hot:#FF8A3D;
  --c-text:#E8F1FF;
  --c-text-2:#9FB4CE;
  --c-text-3:#6B8099;
  --c-ok:#22C55E;
  --r-card:16px;
  --r-panel:20px;
  --r-btn:12px;
  --r-img:14px;
  --shadow-card:0 10px 30px -12px rgba(0,0,0,.72);
  --shadow-glass:inset 0 1px 0 rgba(255,255,255,.06),0 10px 30px -12px rgba(0,0,0,.72);
  --shadow-glow:0 0 0 1px rgba(0,227,194,.35),0 10px 28px -8px rgba(0,227,194,.45);
  --ease:cubic-bezier(.2,.8,.2,1);
  --t:180ms var(--ease);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  min-height:100%;
  font-family:"HarmonyOS Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",Inter,system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--c-text);
  background-color:var(--c-bg);
  background-image:
    radial-gradient(900px 620px at 88% -6%, rgba(47,107,255,.13), transparent 70%),
    radial-gradient(820px 560px at -8% 96%, rgba(0,227,194,.09), transparent 72%),
    linear-gradient(rgba(126,178,255,.032) 1px, transparent 1px),
    linear-gradient(90deg, rgba(126,178,255,.032) 1px, transparent 1px);
  background-size:auto,auto,24px 24px,24px 24px;
  background-attachment:fixed;
  overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:var(--c-text-2);text-decoration:none;transition:color var(--t),border-color var(--t)}
a:hover{color:var(--c-text)}
h1,h2,h3,h4,p,ul,ol,figure{margin:0}
ul,ol{list-style:none;padding:0}
button,input{font:inherit;color:inherit}
:focus-visible{outline:2px solid var(--c-accent);outline-offset:2px;border-radius:4px}
.num{font-variant-numeric:tabular-nums}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.section{padding:88px 0}
.section-tight{padding:64px 0}
.section-alt{background:linear-gradient(180deg,rgba(11,21,36,0),rgba(11,21,36,.72) 22%,rgba(11,21,36,.72) 78%,rgba(11,21,36,0))}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:12px;letter-spacing:.14em;color:var(--c-accent);text-transform:uppercase;margin-bottom:14px}
.eyebrow::before{content:"";width:22px;height:2px;background:linear-gradient(90deg,var(--c-accent),transparent);border-radius:2px}
.section-title{font-size:32px;line-height:1.35;font-weight:700;letter-spacing:-.02em;color:var(--c-text)}
.section-desc{margin-top:14px;font-size:15px;line-height:1.85;color:var(--c-text-2);max-width:760px}
.section-head{margin-bottom:36px}
.section-head.center{text-align:center}
.section-head.center .section-desc{margin-left:auto;margin-right:auto}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(5,10,20,.82);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  border-bottom:1px solid var(--c-line);
  transition:background var(--t),box-shadow var(--t);
}
.site-header.scrolled{background:rgba(5,10,20,.94);box-shadow:0 12px 30px -18px rgba(0,0,0,.9),0 1px 0 rgba(0,227,194,.16)}
.header-inner{display:flex;align-items:center;gap:28px;min-height:64px}
.site-header.scrolled .header-inner{min-height:56px}
.logo{display:inline-flex;align-items:center;gap:10px;min-width:120px;flex:none}
.logo-mark{width:34px;height:34px;flex:none;display:block}
.logo-mark svg{width:100%;height:100%;display:block;filter:drop-shadow(0 0 10px rgba(0,227,194,.35))}
.logo-text{font-size:18px;font-weight:700;letter-spacing:.02em;color:var(--c-text)}
.main-nav{display:flex;align-items:center;gap:6px;flex:1}
.main-nav a{
  position:relative;
  display:inline-flex;align-items:center;
  height:44px;padding:0 14px;
  font-size:15px;font-weight:500;color:var(--c-text-2);
  border-radius:10px;
  transition:color var(--t),background var(--t);
}
.main-nav a::after{
  content:"";position:absolute;left:14px;right:14px;bottom:6px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--c-accent),rgba(0,227,194,0));
  transform:scaleX(0);transform-origin:left;transition:transform var(--t);
}
.main-nav a:hover{color:var(--c-text);background:rgba(255,255,255,.04)}
.main-nav a:hover::after{transform:scaleX(1)}
.main-nav a.active{color:var(--c-text);background:rgba(0,227,194,.08)}
.main-nav a.active::after{transform:scaleX(1)}
.nav-right{display:flex;align-items:center;gap:12px;flex:none}
.mega-wrap{position:relative}
.mega-btn{
  display:inline-flex;align-items:center;gap:6px;
  height:40px;padding:0 14px;border-radius:10px;
  background:rgba(255,255,255,.045);border:1px solid var(--c-line-2);
  color:var(--c-text-2);font-size:14px;font-weight:500;cursor:pointer;
  transition:color var(--t),border-color var(--t),background var(--t);
}
.mega-btn:hover{color:var(--c-text);border-color:rgba(0,227,194,.45);background:rgba(0,227,194,.08)}
.mega-btn svg{width:12px;height:12px;transition:transform var(--t)}
.mega-wrap:hover .mega-btn svg,.mega-wrap:focus-within .mega-btn svg{transform:rotate(180deg)}
.mega-panel{
  position:absolute;right:0;top:calc(100% + 12px);width:730px;
  display:grid;grid-template-columns:1fr 1.15fr 1fr;gap:22px;
  padding:24px;
  border-radius:var(--r-panel);
  background:rgba(11,21,36,.96);
  border:1px solid rgba(0,227,194,.28);
  box-shadow:0 26px 60px -26px rgba(0,0,0,.9),inset 0 1px 0 rgba(255,255,255,.06);
  backdrop-filter:blur(16px) saturate(140%);
  opacity:0;visibility:hidden;transform:translateY(-6px);
  transition:opacity 160ms var(--ease),transform 160ms var(--ease),visibility 160ms;
}
.mega-wrap:hover .mega-panel,.mega-wrap:focus-within .mega-panel{opacity:1;visibility:visible;transform:translateY(0)}
.mega-col h5{font-size:13px;font-weight:700;color:var(--c-accent);letter-spacing:.06em;margin-bottom:14px}
.mega-links li + li{margin-top:4px}
.mega-links a{display:flex;align-items:center;gap:8px;padding:8px 10px;border-radius:10px;font-size:14px;color:var(--c-text-2)}
.mega-links a:hover{background:rgba(0,227,194,.08);color:var(--c-text)}
.mega-links i{width:6px;height:6px;border-radius:2px;background:var(--c-accent);flex:none;opacity:.75}
.mega-posts li + li{margin-top:14px;padding-top:14px;border-top:1px solid var(--c-line-2)}
.mega-posts a{display:block;font-size:14px;line-height:1.6;color:var(--c-text)}
.mega-posts a:hover{color:var(--c-accent)}
.mega-posts span{display:block;margin-top:6px;font-size:12px;color:var(--c-text-3)}
.mega-cards{display:flex;flex-direction:column;gap:12px}
.mega-card{
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  padding:14px;border-radius:14px;
  background:rgba(255,255,255,.045);border:1px solid var(--c-line-2);
  font-size:14px;color:var(--c-text);transition:border-color var(--t),transform var(--t);
}
.mega-card small{display:block;margin-top:4px;font-size:12px;color:var(--c-text-3)}
.mega-card:hover{border-color:rgba(0,227,194,.5);transform:translateY(-2px)}
.mega-card b{color:var(--c-accent);font-size:16px;flex:none;transition:transform var(--t)}
.mega-card:hover b{transform:translateX(3px)}

.nav-toggle-input{position:absolute;width:1px;height:1px;opacity:0;pointer-events:none}
.hamburger{display:none;width:44px;height:44px;border-radius:12px;border:1px solid var(--c-line-2);background:rgba(255,255,255,.045);align-items:center;justify-content:center;flex-direction:column;gap:4px;cursor:pointer}
.hamburger span{display:block;width:18px;height:2px;border-radius:2px;background:var(--c-text);transition:transform var(--t),opacity var(--t)}
.nav-toggle-input:checked ~ .header-inner .hamburger span:nth-child(1){transform:translateY(6px) rotate(45deg)}
.nav-toggle-input:checked ~ .header-inner .hamburger span:nth-child(2){opacity:0}
.nav-toggle-input:checked ~ .header-inner .hamburger span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}
.mobile-drawer{
  position:fixed;top:64px;left:0;right:0;bottom:0;z-index:55;
  padding:22px 24px 46px;overflow-y:auto;
  background:rgba(5,10,20,.97);
  backdrop-filter:blur(18px);
  border-top:1px solid var(--c-line);
  opacity:0;visibility:hidden;transform:translateY(-8px);
  transition:opacity 200ms var(--ease),transform 200ms var(--ease),visibility 200ms;
}
.nav-toggle-input:checked ~ .mobile-drawer{opacity:1;visibility:visible;transform:translateY(0)}
.mobile-drawer a.drawer-link{display:block;padding:15px 4px;font-size:16px;font-weight:600;color:var(--c-text);border-bottom:1px solid var(--c-line-2)}
.mobile-drawer a.drawer-link.active{color:var(--c-accent)}
.drawer-sub{margin-top:26px;font-size:13px;color:var(--c-text-3);letter-spacing:.08em}
.drawer-actions{display:flex;flex-direction:column;gap:12px;margin-top:20px}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 22px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;letter-spacing:.01em;
  border:1px solid transparent;cursor:pointer;
  transition:transform var(--t),box-shadow var(--t),background var(--t),border-color var(--t),color var(--t),filter var(--t);
}
.btn-primary{background:linear-gradient(180deg,#00E3C2,#00BFA6);color:#04121A;box-shadow:0 0 0 1px rgba(0,227,194,.38),0 12px 26px -12px rgba(0,227,194,.65)}
.btn-primary:hover{filter:brightness(1.07);transform:translateY(-2px);box-shadow:0 0 0 1px rgba(0,227,194,.6),0 16px 34px -12px rgba(0,227,194,.8);color:#04121A}
.btn-primary:active{transform:translateY(1px)}
.btn-ghost{background:rgba(255,255,255,.045);border-color:var(--c-line-2);color:var(--c-text);backdrop-filter:blur(14px)}
.btn-ghost:hover{border-color:rgba(0,227,194,.5);color:var(--c-text);transform:translateY(-2px)}
.btn-sm{min-height:38px;padding:0 16px;font-size:14px;border-radius:10px}
.btn-text{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--c-accent);min-height:44px}
.btn-text b{transition:transform var(--t);font-weight:600}
.btn-text:hover{color:#7CFFE8}
.btn-text:hover b{transform:translateX(3px)}

/* ---------- badges & tags ---------- */
.badge{display:inline-flex;align-items:center;padding:6px 12px;border-radius:999px;font-size:12px;line-height:1.6;background:rgba(0,227,194,.10);color:var(--c-accent);border:1px solid rgba(0,227,194,.22)}
.badge-hot{background:rgba(255,138,61,.12);color:var(--c-hot);border-color:rgba(255,138,61,.3)}
.tag-row{display:flex;flex-wrap:wrap;gap:12px}
.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:9px 16px;border-radius:999px;
  font-size:13px;color:var(--c-text-2);
  background:rgba(255,255,255,.045);border:1px solid var(--c-line-2);
  transition:border-color var(--t),color var(--t),transform var(--t),background var(--t);
}
.tag:hover{color:var(--c-text);border-color:rgba(0,227,194,.5);background:rgba(0,227,194,.08);transform:translateY(-2px)}

/* ---------- hero ---------- */
.help-hero{position:relative;padding:84px 0 0;overflow:hidden;border-bottom:1px solid var(--c-line)}
.help-hero-bg{
  position:absolute;inset:0;z-index:0;
  background-image:linear-gradient(180deg,rgba(5,10,20,.80),rgba(5,10,20,.93)),url('/assets/images/backpic/back-1.png');
  background-size:cover;background-position:center;
}
.help-hero-bg::after{content:"";position:absolute;inset:0;background:radial-gradient(700px 340px at 20% 8%,rgba(0,227,194,.14),transparent 70%)}
.help-hero .container{position:relative;z-index:1}
.hero-h1{font-size:44px;line-height:1.2;font-weight:700;letter-spacing:-.02em}
.hero-sub{margin-top:16px;font-size:16px;line-height:1.85;color:var(--c-text-2);max-width:640px}
.hero-inner{max-width:820px;margin:0 auto;text-align:center}
.hero-inner .hero-sub{margin-left:auto;margin-right:auto}
.help-search{
  display:flex;align-items:center;gap:12px;
  max-width:640px;margin:34px auto 0;padding:8px 8px 8px 20px;
  border-radius:999px;
  background:rgba(255,255,255,.05);
  border:1px solid var(--c-line-2);
  backdrop-filter:blur(14px) saturate(140%);
  transition:border-color var(--t),box-shadow var(--t);
}
.help-search:focus-within{border-color:rgba(0,227,194,.6);box-shadow:0 0 0 3px rgba(0,227,194,.14),0 0 26px -6px rgba(0,227,194,.5)}
.help-search svg{width:18px;height:18px;flex:none;color:var(--c-text-3)}
.help-search input{
  flex:1;min-width:0;height:40px;
  background:transparent;border:0;outline:none;
  font-size:15px;color:var(--c-text);
}
.help-search input::placeholder{color:var(--c-text-3)}
.quick-tags{display:flex;flex-wrap:wrap;gap:12px;justify-content:center;margin-top:22px}
.hero-stats{margin-top:56px;border-top:1px solid var(--c-line);padding:0;text-align:left}

/* ---------- stat strip ---------- */
.stats-strip{display:grid;grid-template-columns:repeat(4,1fr);background:rgba(11,21,36,.86);backdrop-filter:blur(10px)}
.stat-item{padding:26px 22px;border-left:1px solid var(--c-line)}
.stat-item:first-child{border-left:0}
.stat-value{font-size:26px;font-weight:700;color:var(--c-accent);letter-spacing:-.01em;font-variant-numeric:tabular-nums;line-height:1.3}
.stat-label{margin-top:6px;font-size:13px;color:var(--c-text-2)}

/* ---------- faq ---------- */
.faq-list{margin-top:8px;border-top:1px solid var(--c-line)}
.faq-item{border-bottom:1px solid var(--c-line)}
.faq-item summary{
  display:flex;align-items:center;gap:16px;
  min-height:56px;padding:16px 6px;
  cursor:pointer;list-style:none;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-num{flex:none;min-width:30px;font-size:13px;font-weight:700;color:var(--c-accent);letter-spacing:.06em;font-variant-numeric:tabular-nums}
.faq-q{flex:1;font-size:16px;font-weight:600;line-height:1.6;color:var(--c-text);transition:color var(--t)}
.faq-toggle{position:relative;width:20px;height:20px;flex:none}
.faq-toggle::before,.faq-toggle::after{content:"";position:absolute;border-radius:2px;background:var(--c-accent);transition:transform var(--t),opacity var(--t),background var(--t)}
.faq-toggle::before{left:0;top:9px;width:20px;height:2px}
.faq-toggle::after{left:9px;top:0;width:2px;height:20px}
.faq-item summary:hover .faq-q{color:var(--c-accent)}
.faq-item[open] .faq-toggle::after{transform:rotate(90deg);opacity:0}
.faq-item[open] .faq-toggle::before{background:var(--c-text-3)}
.faq-a{padding:0 6px 24px 46px;font-size:15px;line-height:1.9;color:var(--c-text-2);max-width:940px}
.faq-group + .faq-group{margin-top:64px}
.group-head{display:flex;align-items:center;gap:14px;margin-bottom:20px}
.group-index{display:inline-flex;align-items:center;justify-content:center;width:34px;height:34px;flex:none;border-radius:10px;background:rgba(0,227,194,.10);border:1px solid rgba(0,227,194,.26);color:var(--c-accent);font-size:13px;font-weight:700;font-variant-numeric:tabular-nums}
.group-title{font-size:22px;font-weight:600;line-height:1.5;color:var(--c-text)}
.group-note{font-size:14px;color:var(--c-text-3);margin-left:auto}

/* ---------- prepare block ---------- */
.prepare{display:grid;grid-template-columns:1.05fr .95fr;gap:48px;align-items:center}
.prepare-media{position:relative;border-radius:var(--r-panel);overflow:hidden;border:1px solid rgba(0,227,194,.24);box-shadow:var(--shadow-card)}
.prepare-media img{width:100%;height:100%;object-fit:cover;aspect-ratio:4/3}
.prepare-media::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(5,10,20,.10),rgba(5,10,20,.72))}
.prepare-list{margin-top:26px;display:flex;flex-direction:column;gap:0}
.prepare-list li{display:flex;gap:16px;padding:18px 0;border-top:1px solid var(--c-line-2)}
.prepare-list li:last-child{border-bottom:1px solid var(--c-line-2)}
.prepare-list .dot{width:8px;height:8px;margin-top:11px;border-radius:3px;background:var(--c-accent);flex:none;box-shadow:0 0 12px rgba(0,227,194,.7)}
.prepare-list h3{font-size:16px;font-weight:600;color:var(--c-text);margin-bottom:4px}
.prepare-list p{font-size:14px;line-height:1.85;color:var(--c-text-2)}

/* ---------- cta card ---------- */
.solve-card{
  position:relative;overflow:hidden;
  display:grid;grid-template-columns:1fr auto;gap:32px;align-items:center;
  padding:44px;
  border-radius:var(--r-panel);
  background:linear-gradient(140deg,rgba(0,227,194,.12),rgba(18,34,54,.92) 48%),var(--c-surface-2);
  border:1px solid rgba(0,227,194,.34);
  box-shadow:0 20px 50px -26px rgba(0,227,194,.45),inset 0 1px 0 rgba(255,255,255,.06);
}
.solve-card::after{content:"";position:absolute;right:-60px;top:-60px;width:220px;height:220px;border-radius:50%;background:radial-gradient(circle,rgba(0,227,194,.22),transparent 68%)}
.solve-card h2{font-size:26px;font-weight:700;line-height:1.4;letter-spacing:-.01em;color:var(--c-text)}
.solve-card p{margin-top:12px;font-size:15px;line-height:1.85;color:var(--c-text-2);max-width:620px}
.solve-actions{display:flex;flex-direction:column;gap:12px;align-items:flex-start;position:relative;z-index:1}
.solve-meta{margin-top:18px;font-size:13px;color:var(--c-text-3);font-variant-numeric:tabular-nums}

/* ---------- footer ---------- */
.site-footer{margin-top:0;border-top:1px solid var(--c-line);background:linear-gradient(180deg,rgba(11,21,36,.35),rgba(5,10,20,.95))}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px;padding:64px 0 40px}
.footer-brand p{margin-top:16px;font-size:14px;line-height:1.8;color:var(--c-text-2);max-width:280px}
.footer-col h4{font-size:14px;font-weight:700;color:var(--c-accent);letter-spacing:.04em;margin-bottom:16px}
.footer-col ul li + li{margin-top:10px}
.footer-col a{font-size:14px;color:var(--c-text-2);display:inline-block}
.footer-col a:hover{color:var(--c-text);transform:translateX(2px)}
.footer-contact p{font-size:14px;line-height:1.8;color:var(--c-text-2)}
.footer-contact p + p{margin-top:8px}
.footer-contact b{color:var(--c-text);font-weight:600}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:14px;justify-content:space-between;align-items:center;
  padding:22px 0 30px;border-top:1px solid var(--c-line);
  font-size:13px;color:var(--c-text-3);
}
.footer-links{display:flex;flex-wrap:wrap;gap:18px}
.footer-links a{font-size:13px;color:var(--c-text-3)}
.footer-links a:hover{color:var(--c-accent)}

/* ---------- responsive ---------- */
@media (max-width:1024px){
  .main-nav{display:none}
  .mega-wrap{display:none}
  .hamburger{display:flex}
  .hero-h1{font-size:36px}
  .prepare{grid-template-columns:1fr;gap:32px}
  .solve-card{grid-template-columns:1fr;padding:32px}
  .solve-actions{flex-direction:row;flex-wrap:wrap;align-items:center}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:768px){
  .container{padding:0 16px}
  .section{padding:56px 0}
  .hero-h1{font-size:28px}
  .section-title{font-size:24px}
  .help-hero{padding-top:56px}
  .help-search{margin-top:26px;padding:6px 6px 6px 16px;border-radius:16px}
  .stats-strip{grid-template-columns:1fr 1fr}
  .stat-item{border-left:1px solid var(--c-line);border-top:1px solid var(--c-line)}
  .stat-item:nth-child(odd){border-left:0}
  .stat-item:nth-child(-n+2){border-top:0}
  .stat-value{font-size:22px}
  .faq-a{padding-left:22px}
  .solve-card h2{font-size:22px}
  .footer-grid{padding:44px 0 30px}
  .group-note{display:none}
}
@media (max-width:520px){
  .nav-right .btn{display:none}
  .hero-h1{font-size:26px}
  .footer-grid{grid-template-columns:1fr}
  .stats-strip{grid-template-columns:1fr}
  .stat-item{border-left:0}
  .stat-item + .stat-item{border-top:1px solid var(--c-line)}
  .solve-actions{flex-direction:column;align-items:stretch}
  .solve-actions .btn{width:100%}
}