/* roulang page: index */
:root{
  --ink-0:#070C12;
  --ink-1:#0B131C;
  --ink-2:#101B26;
  --ink-footer:#050A0F;
  --cyan:#2EE6FF;
  --orange:#FF7A3C;
  --text:#E8F2F8;
  --text-2:#93A7B7;
  --text-3:#5C6E7E;
  --line:rgba(255,255,255,.08);
  --line-cyan:rgba(46,230,255,.22);
  --r-lg:18px;
  --r-sm:12px;
  --pill:999px;
  --shadow-card:0 20px 48px rgba(0,0,0,.55), inset 0 1px 0 rgba(255,255,255,.06);
  --shadow-soft:0 12px 32px rgba(0,0,0,.5);
  --font:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --num:"Barlow","DIN Alternate","SFMono-Regular",ui-monospace,Menlo,monospace;
  --wrap:1200px;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:var(--ink-0);
  color:var(--text);
  font-family:var(--font);
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p,figure{margin:0}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
input,select,textarea{font:inherit}
:focus-visible{outline:2px solid var(--cyan);outline-offset:2px;border-radius:4px}
::selection{background:rgba(46,230,255,.28);color:#fff}

.wrap{width:100%;max-width:var(--wrap);margin:0 auto;padding:0 32px}
.grid-x{display:flex;flex-wrap:wrap;margin-left:-12px;margin-right:-12px}
.grid-x>.cell{padding-left:12px;padding-right:12px;box-sizing:border-box}
.gy{margin-bottom:-24px}
.gy>.cell{margin-bottom:24px}
.num{font-family:var(--num);font-variant-numeric:tabular-nums;letter-spacing:.4px}

/* ---------- 导航 ---------- */
.site-head{position:fixed;top:16px;left:0;right:0;z-index:120;transition:top .24s ease-out}
.nav-wrap{width:100%;max-width:1160px;margin:0 auto;padding:0 24px}
.pill-nav{
  display:flex;align-items:center;justify-content:space-between;gap:18px;
  height:64px;padding:0 10px 0 18px;
  border-radius:var(--pill);
  background:rgba(11,19,28,.72);
  -webkit-backdrop-filter:blur(14px);
  backdrop-filter:blur(14px);
  border:1px solid rgba(255,255,255,.1);
  transition:height .24s ease-out, box-shadow .24s ease-out, background .24s ease-out;
}
.site-head.scrolled .pill-nav{height:56px;box-shadow:0 12px 32px rgba(0,0,0,.5);background:rgba(9,16,24,.88)}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.brand-mark{
  display:grid;place-items:center;width:32px;height:32px;border-radius:10px;
  border:1px solid var(--line-cyan);background:rgba(46,230,255,.08);color:var(--cyan);
}
.brand-text{font-size:16px;font-weight:700;letter-spacing:.2px;color:var(--text);white-space:nowrap}
.nav-links{display:flex;align-items:center;gap:6px;flex:1 1 auto;justify-content:center}
.nav-links a{
  position:relative;display:inline-flex;align-items:center;height:40px;padding:0 14px;
  font-size:15px;color:var(--text-2);border-radius:var(--pill);
  transition:color .2s ease-out,background .2s ease-out;
}
.nav-links a:hover{color:var(--text);background:rgba(255,255,255,.05)}
.nav-links a.active{color:var(--cyan)}
.nav-links a.active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:4px;height:3px;
  border-radius:2px;background:var(--cyan);
}
.nav-cta{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.burger{
  display:none;width:44px;height:44px;align-items:center;justify-content:center;
  border-radius:50%;border:1px solid var(--line);color:var(--text);
}
.burger span{display:block;width:18px;height:2px;background:currentColor;border-radius:2px;position:relative}
.burger span::before,.burger span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:currentColor;border-radius:2px;
}
.burger span::before{top:-6px}
.burger span::after{top:6px}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:48px;padding:0 26px;border-radius:var(--pill);
  font-size:15px;font-weight:600;line-height:1;white-space:nowrap;
  border:1px solid transparent;
  transition:transform .24s ease-out, box-shadow .24s ease-out, background .24s ease-out, color .24s ease-out, filter .24s ease-out;
}
.btn-sm{min-height:40px;padding:0 20px;font-size:14px}
.btn-primary{
  background:linear-gradient(90deg,var(--orange),#FF9B5E);
  color:#14100C;
  box-shadow:0 0 18px rgba(255,122,60,.35);
}
.btn-primary:hover{filter:brightness(1.08);box-shadow:0 0 28px rgba(255,122,60,.5);transform:translateY(-2px)}
.btn-primary:active{transform:translateY(0);box-shadow:0 0 12px rgba(255,122,60,.28)}
.btn-ghost{
  border-color:rgba(46,230,255,.4);color:var(--cyan);background:rgba(46,230,255,.05);
}
.btn-ghost:hover{background:rgba(46,230,255,.13);transform:translateY(-2px)}
.btn-ghost:active{transform:translateY(0)}
.btn-block{width:100%}
.text-link{
  display:inline-flex;align-items:center;gap:6px;font-size:15px;color:var(--cyan);
  background-image:linear-gradient(var(--cyan),var(--cyan));
  background-size:0 1px;background-repeat:no-repeat;background-position:0 100%;
  transition:background-size .24s ease-out,color .24s ease-out;
  padding-bottom:2px;
}
.text-link:hover{background-size:100% 1px}

/* ---------- 通用板块 ---------- */
.section{padding:96px 0;position:relative}
.sec-head{margin-bottom:44px}
.sec-head--row{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;flex-wrap:wrap}
.sec-eyebrow{display:inline-block;font-family:var(--num);font-size:12px;letter-spacing:2px;color:var(--cyan);text-transform:uppercase}
.sec-title{font-size:clamp(24px,2.6vw,32px);font-weight:700;line-height:1.3;margin-top:10px}
.sec-title::before{content:"";display:block;width:40px;height:3px;border-radius:2px;background:var(--cyan);margin-bottom:14px}
.sec-desc{color:var(--text-2);font-size:15px;line-height:1.85;max-width:660px;margin-top:12px}

/* ---------- Hero ---------- */
.hero{position:relative;overflow:hidden;padding:150px 0 96px;min-height:620px;display:flex;align-items:center}
.hero-bg{position:absolute;inset:0;background:url('/assets/images/backpic/back-1.png') center/cover no-repeat;z-index:0}
.hero-veil{position:absolute;inset:0;background:rgba(7,12,18,.78);z-index:1}
.hero-tex{
  position:absolute;inset:0;z-index:2;opacity:.06;pointer-events:none;
  background-image:
    repeating-linear-gradient(0deg,rgba(255,255,255,.9) 0 1px,transparent 1px 24px),
    repeating-linear-gradient(90deg,rgba(255,255,255,.9) 0 1px,transparent 1px 24px);
}
.hero-inner{position:relative;z-index:3;width:100%}
.badge{
  display:inline-flex;align-items:center;gap:8px;
  padding:7px 16px;border-radius:var(--pill);
  font-family:var(--num);font-size:12px;letter-spacing:.6px;
  color:var(--orange);background:rgba(255,122,60,.12);border:1px solid rgba(255,122,60,.32);
}
.badge::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--orange);box-shadow:0 0 8px var(--orange)}
h1.hero-title{
  font-size:clamp(30px,4.2vw,46px);font-weight:700;line-height:1.25;letter-spacing:-.5px;
  margin-top:20px;max-width:14em;
}
.hero-sub{color:var(--text-2);font-size:17px;line-height:1.8;margin-top:18px;max-width:26em}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:34px}
.hero-stats{display:flex;flex-wrap:wrap;margin-top:40px}
.hero-stats li{padding:0 24px;border-left:1px solid rgba(255,255,255,.14)}
.hero-stats li:first-child{padding-left:0;border-left:0}
.hero-stats .num{display:block;font-size:22px;font-weight:700;color:var(--text);line-height:1.4}
.hero-stats .lbl{display:block;font-size:12px;color:var(--text-3);letter-spacing:.5px}

.spec-card{
  border-radius:var(--r-lg);padding:22px 24px;
  background:rgba(16,27,38,.62);
  -webkit-backdrop-filter:blur(12px);
  backdrop-filter:blur(12px);
  border:1px solid var(--line-cyan);
  box-shadow:var(--shadow-card);
  margin-left:auto;max-width:400px;
}
.spec-card h2{font-size:14px;font-weight:600;color:var(--text);letter-spacing:.5px;padding-bottom:14px;border-bottom:1px solid var(--line)}
.spec-row{display:flex;align-items:baseline;justify-content:space-between;gap:14px;padding:13px 0;border-bottom:1px dashed rgba(255,255,255,.08)}
.spec-row:last-child{border-bottom:0;padding-bottom:0}
.spec-k{font-size:13px;color:var(--text-2);flex:0 0 auto}
.spec-v{font-family:var(--num);font-variant-numeric:tabular-nums;font-size:15px;color:var(--cyan);text-align:right;word-break:break-word}

/* ---------- 适配信息条 ---------- */
.specs{padding-top:72px;padding-bottom:72px}
.spec-item{
  display:flex;gap:14px;align-items:flex-start;height:100%;
  padding:22px;border-radius:var(--r-lg);
  background:var(--ink-2);border:1px solid var(--line);
  transition:transform .24s ease-out,border-color .24s ease-out,box-shadow .24s ease-out;
}
.spec-item:hover{transform:translateY(-4px);border-color:rgba(46,230,255,.35);box-shadow:var(--shadow-soft)}
.spec-ico{flex:0 0 28px;color:var(--cyan);margin-top:2px}
.spec-ico svg{width:26px;height:26px}
.spec-item h3{font-size:16px;font-weight:600;line-height:1.5}
.spec-item p{font-size:13px;color:var(--text-2);line-height:1.8;margin-top:6px}

/* ---------- 能力区 ---------- */
.capability .cap-intro{padding-right:24px}
.cap-intro h2{font-size:clamp(24px,2.6vw,32px);font-weight:700;line-height:1.3}
.cap-intro h2::before{content:"";display:block;width:40px;height:3px;border-radius:2px;background:var(--cyan);margin-bottom:14px}
.cap-intro p{color:var(--text-2);font-size:15px;margin-top:16px}
.cap-intro .text-link{margin-top:22px}
.cap-grid{display:grid;grid-template-columns:1fr 1fr;grid-auto-rows:minmax(0,auto);gap:20px}
.cap-card{
  border-radius:var(--r-lg);background:var(--ink-2);border:1px solid var(--line);
  overflow:hidden;display:flex;flex-direction:column;
  transition:transform .24s ease-out,border-color .24s ease-out,box-shadow .24s ease-out;
}
.cap-card:hover{transform:translateY(-4px);border-color:rgba(46,230,255,.35);box-shadow:var(--shadow-soft)}
.cap-card--tall{grid-row:span 2}
.cap-card .thumb{position:relative;overflow:hidden;background:var(--ink-1)}
.cap-card .thumb img{width:100%;height:100%;object-fit:cover;aspect-ratio:4/3;transition:transform .24s ease-out}
.cap-card:hover .thumb img{transform:scale(1.04)}
.cap-body{padding:20px 22px;display:flex;flex-direction:column;gap:8px;flex:1}
.cap-body h3{font-size:18px;font-weight:600;line-height:1.5}
.cap-body p{font-size:14px;color:var(--text-2);line-height:1.8}
.cap-more{margin-top:auto;font-size:13px;color:var(--cyan);display:inline-flex;gap:6px;align-items:center;transition:gap .24s ease-out}
.cap-card:hover .cap-more{gap:10px}

/* ---------- 数据区 ---------- */
.stats{background:var(--ink-1);padding:110px 0 96px;position:relative}
.stats .slant{
  position:absolute;left:0;right:0;top:-52px;height:52px;background:var(--ink-1);
  clip-path:polygon(0 100%,100% 0,100% 100%,0 100%);
}
.stat{padding-right:16px}
.stat-num{font-family:var(--num);font-variant-numeric:tabular-nums;font-size:clamp(34px,4vw,46px);font-weight:700;color:var(--cyan);line-height:1.1}
.stat-unit{font-size:14px;color:var(--text-2);margin-left:4px}
.stat-lbl{font-size:13px;color:var(--text-2);margin-top:12px;line-height:1.7}

/* ---------- 场景区 ---------- */
.scene{display:flex;align-items:center;gap:36px}
.scene + .scene{margin-top:56px}
.scene-media{
  flex:0 0 48%;border-radius:var(--r-lg);overflow:hidden;background:var(--ink-2);
  border:1px solid var(--line);
}
.scene-media img{width:100%;aspect-ratio:4/3;object-fit:cover;transition:transform .24s ease-out}
.scene:hover .scene-media img{transform:scale(1.04)}
.scene-text{flex:1 1 auto;min-width:0}
.scene-text .tag-line{
  font-family:var(--num);font-size:12px;letter-spacing:1.4px;color:var(--cyan);
}
.scene-text h3{font-size:22px;font-weight:600;line-height:1.5;margin-top:10px}
.scene-text h3::after{content:"";display:block;width:44px;height:2px;background:var(--cyan);margin-top:14px}
.scene-text p{font-size:15px;color:var(--text-2);margin-top:16px;max-width:34em}
.scene-text ul{margin-top:16px;display:grid;gap:8px}
.scene-text ul li{position:relative;padding-left:18px;font-size:14px;color:var(--text-2)}
.scene-text ul li::before{content:"";position:absolute;left:0;top:.75em;width:6px;height:6px;background:var(--cyan);border-radius:1px}
.scene--rev .scene-media{order:2}
.scene--rev .scene-text{order:1}

/* ---------- 步骤区 ---------- */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.step{
  padding:26px 0 0;border-top:1px dashed rgba(46,230,255,.32);
  transition:border-color .24s ease-out;
}
.step:hover{border-color:var(--cyan)}
.step-num{font-family:var(--num);font-variant-numeric:tabular-nums;font-size:28px;font-weight:700;color:var(--cyan);line-height:1}
.step h3{font-size:18px;font-weight:600;margin-top:14px;line-height:1.5}
.step p{font-size:14px;color:var(--text-2);margin-top:10px;line-height:1.8}

/* ---------- 资讯 / CMS ---------- */
.news-grid{align-items:start}
.post-card{
  display:flex;flex-direction:column;height:100%;overflow:hidden;
  border-radius:var(--r-lg);background:var(--ink-2);border:1px solid var(--line);
  transition:transform .24s ease-out,border-color .24s ease-out,box-shadow .24s ease-out;
}
.post-card:hover{transform:translateY(-4px);border-color:rgba(46,230,255,.35);box-shadow:var(--shadow-soft)}
.post-card .thumb{position:relative;overflow:hidden;background:var(--ink-1)}
.post-card .thumb img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .24s ease-out}
.post-card:hover .thumb img{transform:scale(1.04)}
.tag{
  display:inline-flex;align-items:center;padding:5px 12px;border-radius:var(--pill);
  font-size:12px;letter-spacing:.5px;color:var(--cyan);
  background:rgba(46,230,255,.12);border:1px solid rgba(46,230,255,.24);
}
.thumb .tag{position:absolute;left:14px;top:14px;background:rgba(7,12,18,.78)}
.post-body{padding:22px 24px;display:flex;flex-direction:column;gap:12px;flex:1}
.post-body h3{
  font-size:20px;font-weight:600;line-height:1.5;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.post-excerpt{
  font-size:14px;color:var(--text-2);line-height:1.8;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.post-meta{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:auto;padding-top:6px}
.post-meta .time{font-family:var(--num);font-variant-numeric:tabular-nums;font-size:13px;color:var(--text-3);white-space:nowrap}
.post-meta .arrow{font-size:13px;color:var(--cyan);display:inline-flex;gap:6px;align-items:center;transition:gap .24s ease-out}
.post-card:hover .arrow,.post-row:hover .arrow{gap:10px}
.post-side{display:flex;flex-direction:column;gap:20px;height:100%}
.post-row{
  display:flex;gap:16px;overflow:hidden;
  border-radius:var(--r-lg);background:var(--ink-2);border:1px solid var(--line);
  transition:transform .24s ease-out,border-color .24s ease-out,box-shadow .24s ease-out;
}
.post-row:hover{transform:translateY(-4px);border-color:rgba(46,230,255,.35);box-shadow:var(--shadow-soft)}
.row-thumb{flex:0 0 148px;overflow:hidden;background:var(--ink-1)}
.row-thumb img{width:100%;height:100%;object-fit:cover;min-height:132px;transition:transform .24s ease-out}
.post-row:hover .row-thumb img{transform:scale(1.04)}
.row-body{padding:18px 20px 18px 0;display:flex;flex-direction:column;gap:8px;flex:1;min-width:0}
.row-body h3{
  font-size:17px;font-weight:600;line-height:1.5;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.row-body .post-excerpt{font-size:13px}
.empty-state{
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:16px;
  min-height:220px;border:1px dashed rgba(255,255,255,.16);border-radius:var(--r-lg);
  background:rgba(16,27,38,.5);text-align:center;padding:32px;
}
.empty-state svg{width:34px;height:34px;color:var(--text-3)}
.empty-state p{font-size:15px;color:var(--text-2)}

/* ---------- FAQ ---------- */
.faq-list{display:grid;gap:12px;max-width:900px}
.faq-item{
  border-radius:14px;background:var(--ink-2);border:1px solid var(--line);
  overflow:hidden;transition:border-color .24s ease-out,box-shadow .24s ease-out;
}
.faq-item.open{border-color:rgba(46,230,255,.3);box-shadow:inset 3px 0 0 var(--cyan)}
.faq-q{
  display:flex;align-items:center;justify-content:space-between;gap:16px;width:100%;
  padding:18px 22px;text-align:left;font-size:16px;font-weight:600;line-height:1.6;color:var(--text);
  transition:color .2s ease-out;
}
.faq-q:hover{color:var(--cyan)}
.faq-icon{position:relative;flex:0 0 22px;width:22px;height:22px;border-radius:50%;border:1px solid var(--line-cyan)}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--cyan);border-radius:2px;
  transform:translate(-50%,-50%);transition:transform .24s ease-out,opacity .24s ease-out;
}
.faq-icon::before{width:10px;height:1.5px}
.faq-icon::after{width:1.5px;height:10px}
.faq-item.open .faq-icon::after{transform:translate(-50%,-50%) rotate(90deg);opacity:0}
.faq-a{max-height:0;overflow:hidden;transition:max-height .26s ease-out}
.faq-a p{padding:0 22px 20px;font-size:15px;line-height:1.9;color:var(--text-2)}

/* ---------- CTA 条 ---------- */
.cta-bar{
  display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap;
  padding:32px 34px;border-radius:var(--r-lg);
  background:var(--ink-1);border:1px solid var(--line);border-left:3px solid var(--cyan);
}
.cta-bar h3{font-size:20px;font-weight:600;line-height:1.5}
.cta-bar p{font-size:14px;color:var(--text-2);margin-top:6px}

/* ---------- 联系表单 ---------- */
.contact-info{display:grid;gap:18px;margin-top:26px}
.contact-item{display:flex;gap:14px;align-items:flex-start}
.contact-item svg{flex:0 0 22px;width:22px;height:22px;color:var(--cyan);margin-top:3px}
.contact-item .k{font-size:13px;color:var(--text-3)}
.contact-item .v{font-size:15px;color:var(--text);line-height:1.7}
.form-card{
  padding:30px;border-radius:var(--r-lg);
  background:var(--ink-2);border:1px solid var(--line);box-shadow:var(--shadow-card);
}
.field{margin-bottom:18px}
.field label{display:block;font-size:13px;color:var(--text-2);margin-bottom:8px;letter-spacing:.3px}
.field input,.field select,.field textarea{
  width:100%;min-height:48px;padding:12px 14px;
  border-radius:var(--r-sm);border:1px solid var(--line);
  background:var(--ink-1);color:var(--text);font-size:15px;line-height:1.6;
  transition:border-color .2s ease-out,box-shadow .2s ease-out;
}
.field textarea{resize:vertical;min-height:118px}
.field input::placeholder,.field textarea::placeholder{color:var(--text-3)}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--cyan);box-shadow:0 0 0 3px rgba(46,230,255,.14);
}
.field select{appearance:none;background-image:none;cursor:pointer}
.form-note{font-size:12px;color:var(--text-3);margin-top:14px;line-height:1.7}
.form-tip{font-size:13px;color:var(--cyan);margin-top:12px;min-height:20px}

/* ---------- 页脚 ---------- */
.site-foot{background:var(--ink-footer);border-top:1px solid var(--line);padding:72px 0 0}
.foot-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:32px}
.foot-brand .brand{margin-bottom:16px}
.foot-desc{font-size:13px;color:var(--text-2);line-height:1.9;max-width:26em}
.foot-col h4{font-size:14px;font-weight:600;color:var(--text);margin-bottom:16px;letter-spacing:.4px}
.foot-col ul{display:grid;gap:10px}
.foot-col a,.foot-col li{font-size:13px;color:var(--text-2);line-height:1.8;transition:color .2s ease-out}
.foot-col a:hover{color:var(--cyan)}
.foot-bottom{
  margin-top:56px;padding:22px 0;border-top:1px solid var(--line);
  text-align:center;font-size:12px;color:var(--text-3);line-height:1.9;
}
.foot-bottom .num{color:var(--text-2)}

/* ---------- 抽屉 ---------- */
.drawer{
  position:fixed;inset:0;z-index:200;display:flex;flex-direction:column;
  background:rgba(6,10,16,.98);
  -webkit-backdrop-filter:blur(8px);
  backdrop-filter:blur(8px);
  padding:22px 20px calc(22px + env(safe-area-inset-bottom));
  transform:translateX(100%);visibility:hidden;
  transition:transform .28s ease-out,visibility .28s ease-out;
}
.drawer.open{transform:translateX(0);visibility:visible}
.drawer-top{display:flex;align-items:center;justify-content:space-between;gap:16px;padding-bottom:18px;border-bottom:1px solid var(--line)}
.drawer-brand{display:flex;align-items:center;gap:10px;font-size:14px;font-weight:700;color:var(--text)}
.drawer-close{
  width:44px;height:44px;display:grid;place-items:center;border-radius:50%;
  border:1px solid var(--line);color:var(--text);font-size:20px;line-height:1;
}
.drawer-nav{margin-top:12px;flex:1 1 auto;overflow-y:auto}
.drawer-nav a{
  display:flex;align-items:center;justify-content:space-between;
  height:56px;font-size:16px;color:var(--text);border-bottom:1px solid rgba(255,255,255,.06);
}
.drawer-nav a.active{color:var(--cyan)}
.drawer-nav a span{font-size:13px;color:var(--text-3)}
.drawer-foot{padding-top:16px;border-top:1px solid var(--line)}
body.no-scroll{overflow:hidden}

/* ---------- 响应式 ---------- */
@media (max-width:1439px){
  .wrap{max-width:1200px}
}
@media (max-width:1023px){
  .wrap{padding:0 24px}
  .nav-wrap{padding:0 18px}
  .nav-links{display:none}
  .nav-cta .btn{display:none}
  .burger{display:inline-flex}
  .section{padding:72px 0}
  .hero{padding:132px 0 72px;min-height:auto}
  .hero-title{max-width:none}
  .spec-card{margin:36px 0 0;max-width:none}
  .scene{flex-direction:column;gap:22px;align-items:stretch}
  .scene-media{flex:0 0 auto}
  .scene--rev .scene-media{order:1}
  .scene--rev .scene-text{order:2}
  .steps{grid-template-columns:1fr;gap:26px}
  .cap-grid{grid-template-columns:1fr 1fr}
  .cap-card--tall{grid-row:span 1}
  .foot-grid{grid-template-columns:1fr 1fr;gap:28px}
  .stat{padding-right:0;margin-bottom:8px}
}
@media (max-width:767px){
  .grid-x{margin-left:-8px;margin-right:-8px}
  .grid-x>.cell{padding-left:8px;padding-right:8px}
  .gy{margin-bottom:-16px}
  .gy>.cell{margin-bottom:16px}
  .hero-stats li{padding:0 16px}
  .hero-stats .num{font-size:19px}
  .cap-grid{grid-template-columns:1fr}
  .post-row{flex-direction:column}
  .row-thumb{flex:0 0 auto}
  .row-thumb img{min-height:0;aspect-ratio:16/9}
  .row-body{padding:0 20px 20px}
  .stats{padding:86px 0 72px}
  .cta-bar{padding:24px}
}
@media (max-width:639px){
  .wrap{padding:0 18px}
  .nav-wrap{padding:0 12px}
  .site-head{top:10px}
  .pill-nav{height:58px;padding:0 8px 0 14px;gap:10px}
  .brand-text{font-size:14px}
  .brand-mark{width:28px;height:28px;border-radius:9px}
  .section{padding:52px 0}
  .hero{padding:118px 0 56px}
  .hero-sub{font-size:15px}
  .hero-actions .btn{flex:1 1 100%}
  .hero-stats{gap:14px 0}
  .hero-stats li{padding:0 14px}
  .spec-card{padding:18px}
  .post-body{padding:18px 20px}
  .faq-q{padding:16px 18px;font-size:15px}
  .faq-a p{padding:0 18px 18px}
  .form-card{padding:22px}
  .foot-grid{grid-template-columns:1fr;gap:26px}
  .foot-bottom{margin-top:36px}
}

/* roulang page: article */
:root{
  --ink-0:#070C12;
  --ink-1:#0B131C;
  --ink-2:#101B26;
  --cyan:#2EE6FF;
  --orange:#FF7A3C;
  --orange-2:#FF9B5E;
  --text:#E8F2F8;
  --body-text:#CBD9E4;
  --muted:#93A7B7;
  --dim:#5C6E7E;
  --line:rgba(255,255,255,.08);
  --line-2:rgba(46,230,255,.22);
  --r-lg:18px;
  --r-md:14px;
  --r-sm:12px;
  --shadow-card:0 20px 48px rgba(0,0,0,.55),inset 0 1px 0 rgba(255,255,255,.06);
  --ease:cubic-bezier(.22,.61,.36,1);
  --num-font:"DIN Alternate",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--ink-0);
  color:var(--text);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.85;
  font-variant-numeric:tabular-nums;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  background-image:linear-gradient(rgba(46,230,255,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(46,230,255,.05) 1px,transparent 1px);
  background-size:24px 24px;
  opacity:.5;
  pointer-events:none;
  z-index:0;
}
img{max-width:100%;display:block;border-style:none;}
a{color:inherit;text-decoration:none;}
h1,h2,h3,h4,p,ul,ol,figure,blockquote{margin:0;padding:0;}
ul,ol{list-style:none;}
button{font-family:inherit;cursor:pointer;}
::selection{background:rgba(46,230,255,.28);color:#fff;}
.wrap{width:100%;max-width:1200px;margin:0 auto;padding:0 32px;position:relative;z-index:1;}
.num{font-family:var(--num-font);font-variant-numeric:tabular-nums;letter-spacing:.02em;}

/* ============ 悬浮胶囊导航 ============ */
.site-head{position:fixed;top:16px;left:0;right:0;z-index:120;padding:0 24px;}
.nav-wrap{max-width:1160px;margin:0 auto;}
.pill-nav{
  display:flex;align-items:center;gap:20px;
  padding:9px 12px 9px 20px;
  border-radius:999px;
  background:rgba(11,19,28,.72);
  -webkit-backdrop-filter:blur(14px);
  backdrop-filter:blur(14px);
  border:1px solid rgba(255,255,255,.1);
  transition:box-shadow .24s var(--ease),padding .24s var(--ease);
}
.site-head.is-scrolled .pill-nav{box-shadow:0 12px 32px rgba(0,0,0,.5);padding:5px 12px 5px 20px;}
.brand{display:inline-flex;align-items:center;gap:10px;flex-shrink:0;}
.brand-mark{
  width:32px;height:32px;border-radius:10px;
  display:grid;place-items:center;
  color:var(--cyan);
  background:rgba(46,230,255,.1);
  border:1px solid var(--line-2);
  flex-shrink:0;
}
.brand-text{font-size:16px;font-weight:700;letter-spacing:.2px;color:#fff;white-space:nowrap;}
.nav-links{display:flex;align-items:center;gap:6px;margin-left:auto;}
.nav-links li a{
  display:inline-block;
  padding:9px 14px;border-radius:999px;
  font-size:14.5px;color:var(--muted);
  position:relative;
  transition:color .22s var(--ease),background .22s var(--ease);
}
.nav-links li a::after{
  content:"";position:absolute;left:50%;bottom:3px;transform:translateX(-50%);
  width:0;height:3px;border-radius:2px;background:var(--cyan);
  transition:width .22s var(--ease);
}
.nav-links li a:hover{color:var(--text);background:rgba(255,255,255,.05);}
.nav-links li a.active{color:var(--cyan);}
.nav-links li a.active::after{width:18px;}
.nav-cta{display:flex;align-items:center;gap:10px;flex-shrink:0;}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 22px;
  border-radius:999px;border:1px solid transparent;
  font-size:15px;font-weight:600;line-height:1;
  white-space:nowrap;cursor:pointer;
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),background .22s var(--ease),border-color .22s var(--ease),filter .22s var(--ease),color .22s var(--ease);
}
.btn-primary{
  background:linear-gradient(90deg,var(--orange),var(--orange-2));
  color:#1B0C03;
  box-shadow:0 0 18px rgba(255,122,60,.35),inset 0 1px 0 rgba(255,255,255,.3);
}
.btn-primary:hover{filter:brightness(1.08);transform:translateY(-2px);box-shadow:0 0 28px rgba(255,122,60,.55),inset 0 1px 0 rgba(255,255,255,.38);}
.btn-primary:active{transform:translateY(0);box-shadow:0 0 12px rgba(255,122,60,.3);}
.btn-ghost{background:transparent;border-color:var(--line-2);color:var(--cyan);}
.btn-ghost:hover{background:rgba(46,230,255,.08);border-color:var(--cyan);transform:translateY(-2px);}
.btn-ghost:active{transform:translateY(0);}
.btn-sm{min-height:38px;padding:0 18px;font-size:14px;}
.btn:focus-visible{outline:2px solid var(--cyan);outline-offset:2px;}
.burger{
  display:none;width:44px;height:44px;border-radius:999px;
  background:rgba(255,255,255,.06);border:1px solid var(--line);
  position:relative;
}
.burger span,.burger span::before,.burger span::after{
  position:absolute;left:50%;width:18px;height:2px;border-radius:2px;
  background:var(--text);transform:translateX(-50%);
  transition:transform .22s var(--ease),opacity .22s var(--ease);
}
.burger span{top:50%;margin-top:-1px;}
.burger span::before{content:"";left:0;transform:none;top:-6px;}
.burger span::after{content:"";left:0;transform:none;top:6px;}

/* ============ 抽屉 ============ */
.drawer{
  position:fixed;inset:0;z-index:200;
  background:rgba(5,10,15,.96);
  -webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px);
  display:flex;flex-direction:column;
  opacity:0;visibility:hidden;transform:translateY(-8px);
  transition:opacity .24s var(--ease),transform .24s var(--ease),visibility .24s;
}
.drawer.is-open{opacity:1;visibility:visible;transform:translateY(0);}
.drawer-inner{display:flex;flex-direction:column;height:100%;padding:22px 22px 28px;}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding-bottom:18px;border-bottom:1px solid var(--line);}
.drawer-close{width:42px;height:42px;border-radius:999px;background:rgba(255,255,255,.06);border:1px solid var(--line);color:var(--text);font-size:20px;line-height:1;}
.drawer-links{margin-top:12px;flex:1;overflow-y:auto;}
.drawer-links li a{
  display:flex;align-items:center;justify-content:space-between;
  height:56px;padding:0 6px;
  font-size:16px;color:var(--text);
  border-bottom:1px solid var(--line);
}
.drawer-links li a span{color:var(--dim);font-size:18px;}
.drawer-links li a:active{color:var(--cyan);}
.drawer-foot{padding-top:18px;}
.drawer-foot .btn{width:100%;}

/* ============ 页面骨架 ============ */
.page-main{padding-top:132px;position:relative;z-index:1;}
.crumbs{
  display:flex;align-items:center;gap:10px;
  font-size:13.5px;color:var(--dim);
  margin-bottom:26px;flex-wrap:wrap;
}
.crumbs a{color:var(--muted);transition:color .2s var(--ease);}
.crumbs a:hover{color:var(--cyan);}
.crumbs .sep{color:rgba(255,255,255,.16);}
.crumbs .current{color:var(--text);max-width:320px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}

/* ============ 文章头部 ============ */
.article-head{
  border-bottom:1px solid var(--line);
  padding-bottom:28px;margin-bottom:36px;
}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;border-radius:999px;
  font-size:12px;letter-spacing:.5px;font-weight:600;
  color:var(--cyan);
  background:rgba(46,230,255,.12);
  border:1px solid rgba(46,230,255,.24);
}
.article-head h1{
  font-size:clamp(28px,3.6vw,40px);
  line-height:1.28;font-weight:700;letter-spacing:-.5px;
  color:#fff;margin:18px 0 18px;
  word-break:break-word;
}
.article-meta{
  display:flex;align-items:center;gap:14px;flex-wrap:wrap;
  font-size:13px;color:var(--dim);
}
.article-meta .dot{width:4px;height:4px;border-radius:50%;background:var(--dim);}
.article-meta .num{color:var(--muted);}

/* ============ 正文排版 ============ */
.article-body{
  max-width:760px;
  font-size:16px;line-height:1.9;
  color:var(--body-text);
  word-break:break-word;
}
.article-body>*:first-child{margin-top:0;}
.article-body p{margin:0 0 18px;}
.article-body h2{
  font-size:24px;line-height:1.4;color:#fff;font-weight:700;
  margin:36px 0 14px;padding-left:14px;position:relative;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:7px;bottom:7px;width:3px;border-radius:2px;
  background:var(--cyan);
}
.article-body h3{font-size:19px;line-height:1.5;color:#fff;font-weight:600;margin:28px 0 12px;}
.article-body h4{font-size:16px;color:#fff;font-weight:600;margin:22px 0 10px;}
.article-body ul{margin:0 0 18px;}
.article-body ul li{position:relative;padding-left:20px;margin-bottom:8px;}
.article-body ul li::before{
  content:"";position:absolute;left:2px;top:11px;width:6px;height:6px;
  background:var(--cyan);border-radius:1px;
}
.article-body ol{margin:0 0 18px;padding-left:24px;list-style:decimal;}
.article-body ol li{margin-bottom:8px;padding-left:2px;}
.article-body ol li::marker{color:var(--cyan);font-family:var(--num-font);}
.article-body blockquote{
  margin:22px 0;padding:14px 20px;
  border-left:3px solid var(--cyan);
  background:rgba(46,230,255,.06);
  border-radius:0 var(--r-sm) var(--r-sm) 0;
  color:var(--muted);font-size:15px;
}
.article-body img{border-radius:var(--r-sm);margin:22px auto;}
.article-body figure{margin:22px 0;}
.article-body figcaption{font-size:12.5px;color:var(--dim);text-align:center;margin-top:10px;}
.article-body table{width:100%;border-collapse:collapse;margin:20px 0;font-size:14.5px;}
.article-body th{
  font-size:13px;color:var(--cyan);font-weight:600;text-align:left;
  padding:10px 12px;border-bottom:1px solid var(--line-2);letter-spacing:.5px;
}
.article-body td{padding:10px 12px;border-bottom:1px solid var(--line);color:var(--muted);}
.article-body tr:nth-child(even) td{background:rgba(255,255,255,.03);}
.article-body code{
  font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  background:var(--ink-1);color:var(--cyan);
  padding:2px 6px;border-radius:6px;font-size:13.5px;
}
.article-body pre{
  background:var(--ink-1);border:1px solid var(--line);
  border-radius:var(--r-sm);padding:16px;overflow-x:auto;margin:20px 0;
}
.article-body pre code{background:none;padding:0;}
.article-body a{
  color:var(--cyan);
  background-image:linear-gradient(var(--cyan),var(--cyan));
  background-size:0 1px;background-repeat:no-repeat;background-position:0 100%;
  transition:background-size .22s var(--ease);
}
.article-body a:hover{background-size:100% 1px;}
.article-body hr{border:none;border-top:1px solid var(--line);margin:32px 0;}

/* ============ 空态 ============ */
.empty-state{
  border:1px dashed rgba(255,255,255,.18);
  border-radius:var(--r-lg);
  min-height:240px;
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;
  text-align:center;padding:32px;
  background:rgba(16,27,38,.5);
}
.empty-state .empty-icon{
  width:52px;height:52px;border-radius:14px;
  display:grid;place-items:center;color:var(--cyan);
  border:1px solid var(--line-2);background:rgba(46,230,255,.07);
}
.empty-state h2{font-size:19px;color:#fff;font-weight:600;padding:0;margin:0;}
.empty-state h2::before{display:none;}
.empty-state p{font-size:14px;color:var(--muted);margin:0;}

/* ============ 侧栏 ============ */
.article-side{
  position:sticky;top:104px;
  display:flex;flex-direction:column;gap:16px;
}
.side-card{
  background:var(--ink-2);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  padding:20px;
  box-shadow:0 20px 48px rgba(0,0,0,.35),inset 0 1px 0 rgba(255,255,255,.05);
}
.side-card h3{
  font-size:13px;font-weight:600;letter-spacing:1px;
  color:var(--cyan);text-transform:uppercase;
  padding-bottom:12px;margin-bottom:14px;
  border-bottom:1px solid var(--line);
}
.side-list li{margin-bottom:4px;}
.side-list li a{
  display:flex;align-items:center;gap:10px;
  padding:9px 10px;border-radius:10px;
  font-size:14px;color:var(--muted);
  transition:background .2s var(--ease),color .2s var(--ease),transform .2s var(--ease);
}
.side-list li a::before{
  content:"";width:5px;height:5px;border-radius:1px;
  background:var(--dim);flex-shrink:0;transition:background .2s var(--ease);
}
.side-list li a:hover{background:rgba(46,230,255,.08);color:var(--text);transform:translateX(3px);}
.side-list li a:hover::before{background:var(--cyan);}
.side-dl{text-align:left;}
.side-dl p{font-size:13.5px;color:var(--muted);line-height:1.8;margin:0 0 16px;}
.side-dl .btn{width:100%;}
.side-kv{display:flex;justify-content:space-between;gap:12px;padding:8px 0;font-size:13px;border-bottom:1px dashed rgba(255,255,255,.07);}
.side-kv:last-child{border-bottom:none;}
.side-kv span{color:var(--dim);}
.side-kv b{color:var(--cyan);font-weight:600;}

/* ============ 上下篇 / 相关阅读 ============ */
.block{padding:72px 0;position:relative;z-index:1;}
.sec-head{
  display:flex;align-items:flex-end;justify-content:space-between;gap:20px;
  margin-bottom:30px;flex-wrap:wrap;
}
.sec-head h2{
  font-size:clamp(22px,2.4vw,28px);font-weight:700;color:#fff;
  padding-top:16px;position:relative;line-height:1.3;
}
.sec-head h2::before{
  content:"";position:absolute;top:0;left:0;width:40px;height:3px;border-radius:2px;background:var(--cyan);
}
.text-link{
  font-size:14px;color:var(--cyan);
  display:inline-flex;align-items:center;gap:6px;
  transition:gap .2s var(--ease),color .2s var(--ease);
}
.text-link:hover{gap:10px;color:#7DF2FF;}
.pager-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px;}
.pager-card{
  display:block;padding:20px 22px;
  border:1px solid var(--line);border-radius:var(--r-lg);
  background:var(--ink-1);
  transition:transform .24s var(--ease),border-color .24s var(--ease),box-shadow .24s var(--ease);
}
.pager-card:hover{transform:translateY(-4px);border-color:rgba(46,230,255,.35);box-shadow:var(--shadow-card);}
.pager-card .pager-label{font-size:12px;letter-spacing:1px;color:var(--dim);display:block;margin-bottom:8px;}
.pager-card strong{font-size:15.5px;color:var(--text);font-weight:600;line-height:1.6;}

.related-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;}
.rel-card{
  display:flex;flex-direction:column;gap:12px;
  padding:22px;border-radius:var(--r-lg);
  background:var(--ink-2);border:1px solid var(--line);
  transition:transform .24s var(--ease),border-color .24s var(--ease),box-shadow .24s var(--ease);
}
.rel-card:hover{transform:translateY(-4px);border-color:rgba(46,230,255,.35);box-shadow:var(--shadow-card);}
.rel-card h3{font-size:16px;line-height:1.55;font-weight:600;color:var(--text);}
.rel-card .rel-time{font-size:13px;color:var(--dim);margin-top:auto;}
.rel-card .rel-arrow{color:var(--cyan);font-size:14px;transition:transform .2s var(--ease);}
.rel-card:hover .rel-arrow{transform:translateX(4px);}

/* ============ CTA 条 ============ */
.cta-bar{
  display:flex;align-items:center;justify-content:space-between;gap:26px;
  padding:30px 34px;
  background:var(--ink-1);
  border:1px solid var(--line);
  border-left:3px solid var(--cyan);
  border-radius:var(--r-lg);
  flex-wrap:wrap;
}
.cta-bar h2{font-size:20px;color:#fff;font-weight:700;line-height:1.4;}
.cta-bar p{font-size:14px;color:var(--muted);margin-top:6px;}

.back-line{margin-top:26px;}

/* ============ 页脚 ============ */
.site-foot{
  background:#050A0F;
  border-top:1px solid var(--line);
  padding:64px 0 0;
  margin-top:40px;
  position:relative;z-index:1;
}
.foot-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;}
.foot-brand .brand{margin-bottom:16px;}
.foot-desc{font-size:13.5px;color:var(--muted);line-height:1.85;max-width:280px;}
.foot-col h4{font-size:13px;letter-spacing:1px;color:#fff;font-weight:600;margin-bottom:16px;}
.foot-col ul li{font-size:13.5px;color:var(--muted);margin-bottom:10px;line-height:1.7;}
.foot-col ul li a{transition:color .2s var(--ease);}
.foot-col ul li a:hover{color:var(--cyan);}
.foot-bottom{
  margin-top:48px;padding:22px 0;
  border-top:1px solid var(--line);
  text-align:center;font-size:12.5px;color:var(--dim);
}
.foot-bottom .num{color:var(--muted);}

/* ============ 响应式 ============ */
@media (max-width:1023px){
  .wrap{padding:0 24px;}
  .nav-links{display:none;}
  .burger{display:block;}
  .nav-cta .btn-primary{display:none;}
  .page-main{padding-top:118px;}
  .article-side{position:static;}
  .block{padding:56px 0;}
  .related-grid{grid-template-columns:1fr 1fr;}
  .foot-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .site-head{padding:0 18px;}
  .brand-text{font-size:14px;}
}
@media (max-width:767px){
  .wrap{padding:0 18px;}
  .pager-grid{grid-template-columns:1fr;}
  .related-grid{grid-template-columns:1fr;}
  .cta-bar{padding:24px 20px;gap:18px;}
  .cta-bar .btn{width:100%;}
}
@media (max-width:639px){
  body{font-size:15.5px;}
  .brand-text{font-size:13.5px;}
  .brand-mark{width:28px;height:28px;border-radius:8px;}
  .page-main{padding-top:110px;}
  .article-head h1{margin:14px 0;}
  .article-body{font-size:15.5px;line-height:1.85;}
  .article-body h2{font-size:21px;margin-top:30px;}
  .article-body h3{font-size:17.5px;}
  .block{padding:46px 0;}
  .foot-grid{grid-template-columns:1fr;}
  .crumbs .current{max-width:200px;}
}

/* roulang page: category1 */
/* ============ 设计变量 ============ */
:root{
  --ink-0:#070C12;
  --ink-1:#0B131C;
  --ink-2:#101B26;
  --ink-3:#050A0F;
  --cyan:#2EE6FF;
  --orange:#FF7A3C;
  --orange-2:#FF9B5E;
  --t1:#E8F2F8;
  --t2:#93A7B7;
  --t3:#5C6E7E;
  --line:rgba(255,255,255,.08);
  --line-cyan:rgba(46,230,255,.22);
  --r-lg:18px;
  --r-md:14px;
  --r-sm:12px;
  --pill:999px;
  --sh-card:0 20px 48px rgba(0,0,0,.55), inset 0 1px 0 rgba(255,255,255,.06);
  --maxw:1200px;
  --ease:cubic-bezier(.22,.61,.36,1);
}

/* ============ reset ============ */
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--ink-0);
  color:var(--t1);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.3;color:var(--t1);letter-spacing:-.2px;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
a{color:inherit;text-decoration:none;transition:color .22s var(--ease);}
img{max-width:100%;height:auto;display:block;}
button{font-family:inherit;font-size:inherit;border:0;background:none;cursor:pointer;color:inherit;}
table{border-collapse:collapse;}
.num, .tabular{font-variant-numeric:tabular-nums;font-feature-settings:"tnum";}
:focus-visible{outline:2px solid var(--cyan);outline-offset:2px;border-radius:6px;}

/* ============ 容器与栅格 ============ */
.wrap{
  width:100%;
  max-width:var(--maxw);
  margin:0 auto;
  padding:0 32px;
}
.grid-x{display:flex;flex-flow:row wrap;margin-left:-12px;margin-right:-12px;}
.grid-x > .cell{padding-left:12px;padding-right:12px;min-width:0;}

/* ============ 导航 ============ */
.site-head{
  position:fixed;top:0;left:0;right:0;z-index:120;
  padding-top:16px;
  transition:padding .26s var(--ease);
}
.nav-wrap{max-width:1160px;margin:0 auto;padding:0 24px;}
.pill-nav{
  display:flex;align-items:center;gap:20px;
  height:64px;
  padding:0 10px 0 20px;
  border-radius:var(--pill);
  background:rgba(11,19,28,.72);
  -webkit-backdrop-filter:blur(14px);
  backdrop-filter:blur(14px);
  border:1px solid rgba(255,255,255,.1);
  transition:height .26s var(--ease),box-shadow .26s var(--ease),background .26s var(--ease);
}
.site-head.scrolled .pill-nav{
  height:56px;
  background:rgba(11,19,28,.9);
  box-shadow:0 12px 32px rgba(0,0,0,.5);
}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.brand-mark{
  width:30px;height:30px;border-radius:9px;
  display:grid;place-items:center;
  color:var(--cyan);
  background:rgba(46,230,255,.1);
  border:1px solid rgba(46,230,255,.28);
  transition:background .22s var(--ease),transform .22s var(--ease);
}
.brand:hover .brand-mark{background:rgba(46,230,255,.18);transform:translateY(-1px);}
.brand-text{font-size:16px;font-weight:700;letter-spacing:.2px;white-space:nowrap;color:var(--t1);}
.nav-links{display:flex;align-items:center;gap:4px;margin-left:auto;}
.nav-links a{
  position:relative;display:block;
  padding:9px 14px;border-radius:var(--pill);
  font-size:15px;color:var(--t2);
  transition:color .22s var(--ease),background .22s var(--ease);
}
.nav-links a:hover{color:var(--t1);background:rgba(255,255,255,.05);}
.nav-links a.active{color:var(--cyan);}
.nav-links a.active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;height:3px;
  border-radius:2px;background:var(--cyan);
}
.nav-cta{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.burger{
  display:none;width:44px;height:44px;border-radius:var(--pill);
  place-items:center;border:1px solid rgba(255,255,255,.12);
  transition:background .22s var(--ease),border-color .22s var(--ease);
}
.burger:hover{background:rgba(46,230,255,.1);border-color:var(--line-cyan);}
.burger span{display:block;width:18px;height:2px;background:var(--t1);position:relative;border-radius:2px;}
.burger span::before,.burger span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--t1);border-radius:2px;
}
.burger span::before{top:-6px;}
.burger span::after{top:6px;}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 24px;
  border-radius:var(--pill);
  font-size:15px;font-weight:600;letter-spacing:.2px;
  border:1px solid transparent;
  cursor:pointer;
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),background .22s var(--ease),border-color .22s var(--ease),color .22s var(--ease);
}
.btn-primary{
  background:linear-gradient(90deg,var(--orange),var(--orange-2));
  color:#1A0A02;
  box-shadow:0 0 18px rgba(255,122,60,.35),inset 0 1px 0 rgba(255,255,255,.25);
}
.btn-primary:hover{
  transform:translateY(-2px);
  filter:brightness(1.08);
  box-shadow:0 0 28px rgba(255,122,60,.5),inset 0 1px 0 rgba(255,255,255,.32);
}
.btn-primary:active{transform:translateY(0);box-shadow:0 0 12px rgba(255,122,60,.28);}
.btn-ghost{
  background:transparent;color:var(--cyan);
  border-color:rgba(46,230,255,.4);
}
.btn-ghost:hover{
  background:rgba(46,230,255,.1);
  border-color:rgba(46,230,255,.72);
  transform:translateY(-2px);
}
.btn-ghost:active{transform:translateY(0);}
.btn-sm{min-height:38px;padding:0 18px;font-size:14px;}

/* ============ 抽屉 ============ */
.drawer{
  position:fixed;inset:0;z-index:220;
  display:flex;flex-direction:column;
  padding:18px 18px 22px;
  background:rgba(5,10,15,.97);
  -webkit-backdrop-filter:blur(10px);
  backdrop-filter:blur(10px);
  transform:translateY(-102%);
  transition:transform .3s var(--ease);
  overflow-y:auto;
}
.drawer.open{transform:translateY(0);}
.drawer-top{
  display:flex;align-items:center;justify-content:space-between;
  padding-bottom:14px;border-bottom:1px solid var(--line);
}
.drawer-top .brand-text{font-size:15px;}
.drawer-close{
  width:44px;height:44px;border-radius:var(--pill);
  border:1px solid rgba(255,255,255,.14);
  color:var(--t1);font-size:20px;line-height:1;
  display:grid;place-items:center;
  transition:background .22s var(--ease),border-color .22s var(--ease);
}
.drawer-close:hover{background:rgba(46,230,255,.12);border-color:var(--line-cyan);}
.drawer-links{margin-top:8px;}
.drawer-links a{
  display:flex;align-items:center;justify-content:space-between;
  height:56px;font-size:17px;color:var(--t1);
  border-bottom:1px solid var(--line);
}
.drawer-links a span{color:var(--t3);font-size:16px;}
.drawer-links a:hover{color:var(--cyan);}
.drawer-cta{width:100%;margin-top:auto;position:sticky;bottom:0;}
body.lock{overflow:hidden;}

/* ============ 页面页头 ============ */
.page-hero{
  position:relative;overflow:hidden;
  padding:158px 0 88px;
  background:var(--ink-0);
}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background:url(/assets/images/backpic/back-2.webp) center/cover no-repeat;
}
.page-hero::after{
  content:"";position:absolute;inset:0;
  background:rgba(7,12,18,.80);
}
.hero-grid-bg{
  position:absolute;inset:0;z-index:1;pointer-events:none;opacity:.06;
  background-image:linear-gradient(rgba(255,255,255,.7) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.7) 1px,transparent 1px);
  background-size:24px 24px;
}
.page-hero .wrap{position:relative;z-index:2;}
.crumb{display:flex;align-items:center;gap:10px;font-size:13px;color:var(--t3);margin-bottom:20px;}
.crumb a{color:var(--t2);}
.crumb a:hover{color:var(--cyan);}
.crumb span{color:var(--t3);}
.page-hero h1{
  font-size:clamp(28px,3.6vw,42px);
  line-height:1.25;letter-spacing:-.5px;
  margin-bottom:16px;
}
.page-hero .hero-sub{
  font-size:16px;color:var(--t2);
  max-width:620px;margin-bottom:28px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  height:26px;padding:0 12px;border-radius:var(--pill);
  font-size:12px;letter-spacing:.5px;font-weight:600;
  color:var(--cyan);background:rgba(46,230,255,.12);
  border:1px solid rgba(46,230,255,.28);
  margin-bottom:16px;
}
.badge-orange{color:var(--orange);background:rgba(255,122,60,.12);border-color:rgba(255,122,60,.32);}
.glass-card{
  border-radius:var(--r-lg);
  padding:22px 24px;
  background:rgba(16,27,38,.55);
  -webkit-backdrop-filter:blur(12px);
  backdrop-filter:blur(12px);
  border:1px solid rgba(255,255,255,.12);
  box-shadow:0 20px 48px rgba(0,0,0,.5),inset 0 1px 0 rgba(255,255,255,.08);
}
.glass-card h3{font-size:15px;font-weight:600;color:var(--t2);margin-bottom:6px;letter-spacing:.3px;}
.kv{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:11px 0;
  border-bottom:1px dashed rgba(255,255,255,.08);
  font-size:14px;
}
.kv:last-child{border-bottom:0;}
.kv .k{color:var(--t2);font-size:13px;flex:0 0 auto;}
.kv .v{color:var(--cyan);font-weight:600;font-variant-numeric:tabular-nums;text-align:right;word-break:break-word;}

/* ============ 板块通用 ============ */
.section{padding:96px 0;position:relative;}
.section-alt{background:var(--ink-1);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.section-head{max-width:780px;margin-bottom:44px;}
.section-head .line{display:block;width:40px;height:3px;border-radius:2px;background:var(--cyan);margin-bottom:18px;}
.section-head h2{
  font-size:clamp(24px,2.6vw,32px);
  line-height:1.3;margin-bottom:14px;
}
.section-head p{font-size:16px;color:var(--t2);}

/* ============ 条目列表 ============ */
.entry-list{display:flex;flex-direction:column;gap:12px;}
.entry-item{
  display:flex;align-items:flex-start;gap:20px;
  padding:22px;
  background:var(--ink-2);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  box-shadow:0 14px 32px rgba(0,0,0,.35),inset 0 1px 0 rgba(255,255,255,.05);
  transition:transform .24s var(--ease),border-color .24s var(--ease),box-shadow .24s var(--ease);
}
.entry-item:hover{
  transform:translateY(-4px);
  border-color:rgba(46,230,255,.35);
  box-shadow:0 22px 44px rgba(0,0,0,.5),inset 0 1px 0 rgba(255,255,255,.08);
}
.entry-num{
  flex:0 0 80px;width:80px;height:80px;
  display:grid;place-items:center;
  border-radius:16px;
  background:rgba(46,230,255,.07);
  border:1px solid rgba(46,230,255,.22);
  color:var(--cyan);
  font-size:24px;font-weight:700;
  font-variant-numeric:tabular-nums;letter-spacing:.5px;
}
.entry-body{flex:1 1 auto;min-width:0;}
.entry-body h3{font-size:19px;font-weight:600;line-height:1.5;margin-bottom:6px;}
.entry-body p{font-size:14.5px;color:var(--t2);line-height:1.8;}
.entry-arrow{
  flex:0 0 auto;align-self:center;
  color:var(--t3);font-size:20px;line-height:1;
  transition:transform .24s var(--ease),color .24s var(--ease);
}
.entry-item:hover .entry-arrow{transform:translateX(4px);color:var(--cyan);}

/* ============ 侧栏 ============ */
.side{position:sticky;top:104px;display:flex;flex-direction:column;gap:16px;}
.side-card{
  background:var(--ink-2);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  padding:22px;
  box-shadow:0 20px 48px rgba(0,0,0,.4),inset 0 1px 0 rgba(255,255,255,.05);
}
.side-card h3{font-size:16px;font-weight:600;margin-bottom:14px;color:var(--t1);}
.side-list li a{
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  padding:9px 0;
  font-size:14px;color:var(--t2);
  border-bottom:1px dashed rgba(255,255,255,.07);
  transition:color .2s var(--ease),padding-left .2s var(--ease);
}
.side-list li:last-child a{border-bottom:0;}
.side-list li a:hover{color:var(--cyan);padding-left:4px;}
.side-list li a i{color:var(--t3);font-style:normal;font-size:12px;}
.side-cta{background:linear-gradient(180deg,rgba(46,230,255,.09),rgba(16,27,38,1));border-color:rgba(46,230,255,.28);}
.side-cta p{font-size:14px;color:var(--t2);margin-bottom:16px;}
.side-cta .btn{width:100%;}

/* ============ 表格 ============ */
.table-wrap{
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  overflow:auto;
  background:var(--ink-2);
  box-shadow:0 20px 48px rgba(0,0,0,.45),inset 0 1px 0 rgba(255,255,255,.05);
}
.spec-table{width:100%;min-width:560px;border-collapse:collapse;font-size:15px;}
.spec-table thead th{
  text-align:left;
  padding:14px 18px;
  font-size:13px;font-weight:600;letter-spacing:.5px;
  color:var(--cyan);
  background:rgba(46,230,255,.06);
  border-bottom:1px solid rgba(46,230,255,.24);
  white-space:nowrap;
}
.spec-table td{
  padding:15px 18px;
  color:var(--t2);
  border-bottom:1px solid var(--line);
  vertical-align:top;
}
.spec-table td:first-child{color:var(--t1);font-weight:600;white-space:nowrap;}
.spec-table td:last-child{color:var(--cyan);font-variant-numeric:tabular-nums;}
.spec-table tbody tr:nth-child(even){background:rgba(255,255,255,.03);}
.spec-table tbody tr:hover{background:rgba(46,230,255,.07);}
.spec-table tbody tr:last-child td{border-bottom:0;}
.table-note{margin-top:16px;font-size:13px;color:var(--t3);}

/* ============ 图文区块 ============ */
.rhythm-media{
  border-radius:var(--r-lg);
  overflow:hidden;
  border:1px solid var(--line);
  background:var(--ink-2);
  box-shadow:0 20px 48px rgba(0,0,0,.5),inset 0 1px 0 rgba(255,255,255,.06);
  position:relative;
  aspect-ratio:4/3;
}
.rhythm-media img{width:100%;height:100%;object-fit:cover;transition:transform .24s var(--ease);}
.rhythm-media:hover img{transform:scale(1.04);}
.rhythm-body h3{font-size:22px;margin-bottom:14px;}
.rhythm-body p{font-size:15.5px;color:var(--t2);margin-bottom:20px;}
.dot-list{display:flex;flex-direction:column;gap:12px;margin-bottom:24px;}
.dot-list li{position:relative;padding-left:20px;font-size:14.5px;color:var(--t2);line-height:1.8;}
.dot-list li::before{
  content:"";position:absolute;left:0;top:11px;
  width:7px;height:7px;border-radius:2px;background:var(--cyan);
}
.dot-list li strong{color:var(--t1);font-weight:600;}
.text-link{
  display:inline-flex;align-items:center;gap:6px;
  font-size:15px;font-weight:600;color:var(--cyan);
  padding-bottom:2px;
  background-image:linear-gradient(var(--cyan),var(--cyan));
  background-repeat:no-repeat;background-size:0 1px;background-position:0 100%;
  transition:background-size .22s var(--ease);
}
.text-link:hover{background-size:100% 1px;}

/* ============ 步骤 ============ */
.step-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.step-card{
  position:relative;
  padding:26px 24px 24px;
  background:var(--ink-2);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  box-shadow:0 16px 36px rgba(0,0,0,.38),inset 0 1px 0 rgba(255,255,255,.05);
  transition:transform .24s var(--ease),border-color .24s var(--ease);
}
.step-card:hover{transform:translateY(-4px);border-color:rgba(46,230,255,.35);}
.step-num{
  display:block;
  font-size:28px;font-weight:700;
  color:var(--cyan);
  font-variant-numeric:tabular-nums;
  letter-spacing:1px;
  margin-bottom:10px;
}
.step-card h3{font-size:18px;font-weight:600;margin-bottom:8px;}
.step-card p{font-size:14.5px;color:var(--t2);line-height:1.8;}

/* ============ FAQ ============ */
.faq-list{display:flex;flex-direction:column;gap:12px;max-width:900px;}
.faq-item{
  position:relative;
  background:var(--ink-2);
  border:1px solid var(--line);
  border-radius:var(--r-md);
  overflow:hidden;
  transition:border-color .24s var(--ease),background .24s var(--ease);
}
.faq-item:hover{border-color:rgba(46,230,255,.24);}
.faq-item.open{border-color:rgba(46,230,255,.3);background:rgba(16,27,38,.9);}
.faq-item.open::before{
  content:"";position:absolute;left:0;top:14px;bottom:14px;width:3px;border-radius:0 3px 3px 0;background:var(--cyan);
}
.faq-q{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  width:100%;text-align:left;
  padding:18px 22px;
  font-size:16px;font-weight:600;color:var(--t1);line-height:1.6;
}
.faq-q:hover{color:var(--cyan);}
.faq-ico{
  position:relative;flex:0 0 20px;width:20px;height:20px;
}
.faq-ico::before,.faq-ico::after{
  content:"";position:absolute;left:50%;top:50%;
  width:14px;height:1.5px;background:var(--cyan);border-radius:2px;
  transform:translate(-50%,-50%);
  transition:transform .24s var(--ease),opacity .24s var(--ease);
}
.faq-ico::after{transform:translate(-50%,-50%) rotate(90deg);}
.faq-item.open .faq-ico::after{transform:translate(-50%,-50%) rotate(0deg);opacity:0;}
.faq-a{
  max-height:0;overflow:hidden;
  transition:max-height .26s var(--ease);
}
.faq-item.open .faq-a{max-height:420px;}
.faq-a p{
  padding:0 22px 20px;
  font-size:15px;color:var(--t2);line-height:1.9;
}

/* ============ CTA 条 ============ */
.cta-band{padding:0 0 96px;}
.cta-inner{
  display:flex;align-items:center;justify-content:space-between;gap:28px;
  padding:32px 36px;
  background:var(--ink-1);
  border:1px solid var(--line);
  border-left:3px solid var(--cyan);
  border-radius:var(--r-lg);
  box-shadow:0 20px 48px rgba(0,0,0,.45),inset 0 1px 0 rgba(255,255,255,.05);
}
.cta-inner h2{font-size:clamp(20px,2.2vw,26px);margin-bottom:8px;}
.cta-inner p{font-size:14.5px;color:var(--t2);}
.cta-inner .btn{flex:0 0 auto;}

/* ============ 页脚 ============ */
.site-foot{
  background:var(--ink-3);
  border-top:1px solid var(--line);
  padding:64px 0 28px;
}
.foot-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px;}
.foot-brand .brand{margin-bottom:14px;}
.foot-desc{font-size:14px;color:var(--t2);line-height:1.85;max-width:280px;}
.foot-col h4{
  font-size:14px;font-weight:600;color:var(--t1);
  letter-spacing:.4px;margin-bottom:16px;
}
.foot-col ul{display:flex;flex-direction:column;gap:10px;}
.foot-col li{font-size:14px;color:var(--t2);line-height:1.7;}
.foot-col a{color:var(--t2);}
.foot-col a:hover{color:var(--cyan);}
.foot-bottom{
  margin-top:48px;padding-top:22px;
  border-top:1px solid var(--line);
  text-align:center;
  font-size:13px;color:var(--t3);
}
.foot-bottom .num{color:var(--t2);}

/* ============ 断点 ============ */
@media (max-width:1023px){
  .nav-links{display:none;}
  .burger{display:grid;}
  .nav-cta .btn-sm{display:none;}
  .pill-nav{height:58px;padding-right:8px;}
  .site-head.scrolled .pill-nav{height:54px;}
  .section{padding:72px 0;}
  .page-hero{padding:132px 0 68px;}
  .step-grid{grid-template-columns:1fr;gap:16px;}
  .side{position:static;margin-top:32px;}
  .foot-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .cta-band{padding:0 0 72px;}
  .wrap{padding:0 24px;}
}

@media (max-width:767px){
  .page-hero h1{font-size:26px;}
  .page-hero .hero-sub{font-size:15px;}
  .section-head{margin-bottom:32px;}
  .entry-item{gap:14px;padding:18px;}
  .entry-num{flex:0 0 60px;width:60px;height:60px;font-size:20px;border-radius:14px;}
  .entry-body h3{font-size:17px;}
  .cta-inner{flex-direction:column;align-items:flex-start;padding:24px;}
  .cta-inner .btn{width:100%;}
}

@media (max-width:519px){
  .wrap{padding:0 18px;}
  .nav-wrap{padding:0 14px;}
  .brand-text{font-size:14px;}
  .pill-nav{height:56px;padding-left:14px;gap:10px;}
  .section{padding:52px 0;}
  .page-hero{padding:118px 0 56px;}
  .foot-grid{grid-template-columns:1fr;gap:26px;}
  .foot-bottom{font-size:12px;line-height:1.8;}
  .entry-item{flex-wrap:nowrap;}
  .entry-num{flex:0 0 48px;width:48px;height:48px;font-size:17px;border-radius:12px;}
  .entry-body p{font-size:14px;}
  .faq-q{font-size:15px;padding:16px 18px;}
  .faq-a p{padding:0 18px 18px;font-size:14px;}
  .btn{min-height:44px;padding:0 20px;font-size:14px;}
}

/* roulang page: category2 */
:root{
  --ink:#070C12;
  --ink-2:#0B131C;
  --card:#101B26;
  --cyan:#2EE6FF;
  --orange:#FF7A3C;
  --orange-2:#FF9B5E;
  --tx:#E8F2F8;
  --tx-2:#93A7B7;
  --tx-3:#5C6E7E;
  --line:rgba(255,255,255,.08);
  --line-cyan:rgba(46,230,255,.22);
  --r-lg:18px;
  --r-md:14px;
  --r-sm:12px;
  --r-pill:999px;
  --sh-card:0 20px 48px rgba(0,0,0,.55), inset 0 1px 0 rgba(255,255,255,.06);
  --sh-soft:0 10px 26px rgba(0,0,0,.4), inset 0 1px 0 rgba(255,255,255,.05);
  --mono:"SFMono-Regular",ui-monospace,"Barlow","DIN Alternate",Menlo,Consolas,monospace;
  --sans:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,sans-serif;
  --sec:96px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background-color:var(--ink);
  background-image:
    linear-gradient(rgba(255,255,255,.025) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.025) 1px,transparent 1px);
  background-size:24px 24px,24px 24px;
  color:var(--tx);
  font-family:var(--sans);
  font-size:16px;
  line-height:1.85;
  letter-spacing:.1px;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border:0;}
a{color:var(--cyan);text-decoration:none;background-image:linear-gradient(var(--cyan),var(--cyan));background-repeat:no-repeat;background-size:0 1px;background-position:0 100%;transition:color .22s ease-out,background-size .22s ease-out;}
a:hover{color:var(--cyan);background-size:100% 1px;}
ul,ol{margin:0;padding:0;list-style:none;}
p{margin:0 0 18px;}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:-.3px;color:var(--tx);}
button{font-family:inherit;cursor:pointer;}
:focus-visible{outline:2px solid var(--cyan);outline-offset:2px;border-radius:6px;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px;}
.wrap{width:100%;max-width:1200px;margin:0 auto;padding:0 32px;}
.num{font-family:var(--mono);font-variant-numeric:tabular-nums;letter-spacing:.4px;}

/* ---------- 悬浮胶囊导航 ---------- */
.site-head{position:fixed;top:16px;left:0;right:0;z-index:60;padding:0 16px;transition:top .24s ease-out;}
.nav-wrap{max-width:1160px;margin:0 auto;}
.pill-nav{
  display:flex;align-items:center;justify-content:space-between;gap:14px;
  height:68px;padding:0 10px 0 18px;
  background:rgba(11,19,28,.72);
  -webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);
  border:1px solid rgba(255,255,255,.1);
  border-radius:var(--r-pill);
  transition:height .24s ease-out,box-shadow .24s ease-out,background .24s ease-out;
}
.site-head.is-scrolled .pill-nav{height:60px;box-shadow:0 12px 32px rgba(0,0,0,.5);background:rgba(9,16,24,.86);}
.brand{display:inline-flex;align-items:center;gap:10px;color:var(--tx);background:none;font-weight:700;font-size:16px;letter-spacing:.4px;white-space:nowrap;}
.brand:hover{color:var(--tx);background:none;}
.brand-mark{width:32px;height:32px;flex:0 0 32px;display:inline-flex;align-items:center;justify-content:center;border-radius:10px;color:var(--cyan);background:rgba(46,230,255,.12);border:1px solid var(--line-cyan);}
.brand-text{display:inline-block;}
.nav-links{display:flex;align-items:center;gap:4px;margin:0;}
.nav-links li{position:relative;}
.nav-links a{
  display:block;padding:9px 15px;border-radius:var(--r-pill);
  font-size:15px;color:var(--tx-2);background:none;
  transition:color .2s ease-out,background .2s ease-out;
}
.nav-links a:hover{color:var(--tx);background:rgba(255,255,255,.06);}
.nav-links a.active{color:var(--cyan);}
.nav-links a.active::after{
  content:"";position:absolute;left:50%;bottom:1px;transform:translateX(-50%);
  width:16px;height:3px;border-radius:2px;background:var(--cyan);
}
.nav-cta{display:flex;align-items:center;gap:10px;}
.burger{
  display:none;width:44px;height:44px;border-radius:var(--r-pill);
  border:1px solid var(--line);background:rgba(255,255,255,.04);
  position:relative;
}
.burger span,.burger span::before,.burger span::after{
  position:absolute;left:50%;width:18px;height:1.5px;background:var(--tx);border-radius:2px;content:"";transform:translateX(-50%);
}
.burger span{top:50%;margin-top:-.75px;}
.burger span::before{top:-6px;}
.burger span::after{top:6px;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:46px;padding:0 22px;border-radius:var(--r-pill);
  font-size:15px;font-weight:600;letter-spacing:.3px;
  border:1px solid transparent;background-image:none;
  transition:transform .22s ease-out,box-shadow .22s ease-out,filter .22s ease-out,border-color .22s ease-out,color .22s ease-out,background-color .22s ease-out;
}
.btn-sm{min-height:40px;padding:0 18px;font-size:14px;}
.btn-primary{
  color:#12181E;
  background-image:linear-gradient(90deg,var(--orange),var(--orange-2));
  box-shadow:0 0 18px rgba(255,122,60,.35);
}
.btn-primary:hover{color:#12181E;filter:brightness(1.08);transform:translateY(-2px);box-shadow:0 0 28px rgba(255,122,60,.5);}
.btn-primary:active{transform:translateY(0);box-shadow:0 0 14px rgba(255,122,60,.3);}
.btn-ghost{
  color:var(--cyan);background:rgba(46,230,255,.06);border-color:var(--line-cyan);
}
.btn-ghost:hover{color:var(--cyan);background:rgba(46,230,255,.12);border-color:rgba(46,230,255,.45);transform:translateY(-2px);}
.btn-ghost:active{transform:translateY(0);}

/* ---------- 移动端抽屉 ---------- */
.drawer{
  position:fixed;inset:0;z-index:90;
  background:var(--ink);
  display:flex;flex-direction:column;
  padding:20px 22px 26px;
  transform:translateY(-102%);
  transition:transform .28s ease-out;
  visibility:hidden;
}
.drawer.is-open{transform:translateY(0);visibility:visible;}
.drawer-top{display:flex;align-items:center;justify-content:space-between;padding-bottom:18px;border-bottom:1px solid var(--line);}
.drawer-top .brand-text{font-weight:700;font-size:15px;letter-spacing:.4px;}
.drawer-close{width:44px;height:44px;border-radius:var(--r-pill);border:1px solid var(--line);background:rgba(255,255,255,.04);color:var(--tx);font-size:20px;line-height:1;}
.drawer-links{margin-top:12px;flex:1;}
.drawer-links li{border-bottom:1px solid var(--line);}
.drawer-links a{display:flex;align-items:center;justify-content:space-between;height:56px;color:var(--tx);font-size:16px;background:none;}
.drawer-links a::after{content:"›";color:var(--tx-3);font-size:20px;}
.drawer-links a.active{color:var(--cyan);}
.drawer-foot{padding-top:18px;}
.drawer-foot .btn{width:100%;}
body.is-lock{overflow:hidden;}

/* ---------- 页头 ---------- */
.page-hero{
  position:relative;overflow:hidden;
  padding:150px 0 88px;
  background-image:url(/assets/images/backpic/back-2.webp);
  background-size:cover;background-position:center 40%;
  border-bottom:1px solid var(--line);
}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background:rgba(7,12,18,.80);
}
.page-hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(255,255,255,.06) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.06) 1px,transparent 1px);
  background-size:24px 24px;opacity:.5;
}
.page-hero .container{position:relative;z-index:2;}
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--tx-3);margin-bottom:22px;}
.crumbs a{color:var(--tx-2);background:none;font-size:13px;}
.crumbs a:hover{color:var(--cyan);}
.crumbs span[aria-current]{color:var(--tx-2);}
.badge{
  display:inline-flex;align-items:center;gap:7px;
  padding:6px 14px;border-radius:var(--r-pill);
  font-size:12px;letter-spacing:.5px;color:var(--cyan);
  background:rgba(46,230,255,.1);border:1px solid var(--line-cyan);
  margin-bottom:20px;
}
.badge .dot{width:6px;height:6px;border-radius:50%;background:var(--orange);box-shadow:0 0 10px rgba(255,122,60,.8);}
.page-hero h1{
  font-size:clamp(28px,4vw,44px);line-height:1.28;letter-spacing:-.5px;
  max-width:820px;margin-bottom:16px;
}
.hero-sub{max-width:640px;color:var(--tx-2);font-size:16px;margin-bottom:30px;}
.hero-acts{display:flex;flex-wrap:wrap;gap:14px;}

/* ---------- 板块通用 ---------- */
.section{padding:var(--sec) 0;}
.section.alt{background:var(--ink-2);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.sec-head{max-width:760px;margin-bottom:44px;}
.sec-head .kicker{
  display:inline-block;font-family:var(--mono);font-size:12px;letter-spacing:1.4px;
  color:var(--cyan);text-transform:uppercase;margin-bottom:14px;
}
.sec-head h2{
  font-size:clamp(24px,2.6vw,32px);line-height:1.3;position:relative;padding-top:18px;
}
.sec-head h2::before{
  content:"";position:absolute;top:0;left:0;width:40px;height:3px;border-radius:2px;background:var(--cyan);
}
.sec-head p{color:var(--tx-2);font-size:15px;margin:14px 0 0;max-width:720px;}

/* ---------- 安装前确认 4 卡 ---------- */
.check-grid .cell{margin-bottom:0;}
.check-card{
  height:100%;display:flex;gap:14px;align-items:flex-start;
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:22px 20px;box-shadow:var(--sh-soft);
  transition:transform .24s ease-out,border-color .24s ease-out;
}
.check-card:hover{transform:translateY(-4px);border-color:rgba(46,230,255,.35);}
.check-ico{
  flex:0 0 34px;width:34px;height:34px;border-radius:10px;
  display:flex;align-items:center;justify-content:center;
  color:var(--cyan);background:rgba(46,230,255,.1);border:1px solid var(--line-cyan);
}
.check-card h3{font-size:16px;font-weight:600;margin-bottom:6px;}
.check-card p{font-size:14px;line-height:1.8;color:var(--tx-2);margin:0;}

/* ---------- 图文小卡（两列） ---------- */
.case-grid .cell{margin-bottom:24px;}
.case-card{
  display:flex;flex-direction:column;height:100%;
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-lg);
  overflow:hidden;box-shadow:var(--sh-soft);
  transition:transform .24s ease-out,border-color .24s ease-out,box-shadow .24s ease-out;
}
.case-card:hover{transform:translateY(-4px);border-color:rgba(46,230,255,.35);box-shadow:var(--sh-card);}
.case-media{position:relative;overflow:hidden;aspect-ratio:16/9;background:var(--card);}
.case-media img{width:100%;height:100%;object-fit:cover;transition:transform .24s ease-out;}
.case-card:hover .case-media img{transform:scale(1.04);}
.case-media .tag{
  position:absolute;left:14px;top:14px;z-index:2;
  padding:5px 12px;border-radius:var(--r-pill);
  font-size:12px;letter-spacing:.5px;color:var(--cyan);
  background:rgba(7,12,18,.78);border:1px solid var(--line-cyan);
  -webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);
}
.case-body{padding:22px;display:flex;flex-direction:column;flex:1;}
.case-body h3{font-size:19px;line-height:1.5;margin-bottom:10px;}
.case-body p{font-size:14px;line-height:1.8;color:var(--tx-2);margin:0 0 16px;}
.case-more{margin-top:auto;display:inline-flex;align-items:center;gap:7px;font-size:14px;color:var(--cyan);background:none;}
.case-more .arw{transition:transform .22s ease-out;}
.case-card:hover .case-more .arw{transform:translateX(4px);}

/* ---------- 步骤 ---------- */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.step{
  position:relative;background:var(--card);border:1px solid var(--line);
  border-radius:var(--r-lg);padding:26px 22px;box-shadow:var(--sh-soft);
  transition:transform .24s ease-out,border-color .24s ease-out;
}
.step:hover{transform:translateY(-4px);border-color:rgba(46,230,255,.35);}
.step-no{font-family:var(--mono);font-variant-numeric:tabular-nums;font-size:28px;color:var(--cyan);line-height:1;letter-spacing:1px;}
.step-line{height:1px;margin:16px 0 18px;background-image:linear-gradient(90deg,var(--line-cyan) 0 8px,transparent 8px 14px);background-size:14px 1px;background-repeat:repeat-x;}
.step h3{font-size:18px;margin-bottom:8px;}
.step p{font-size:14px;color:var(--tx-2);line-height:1.8;margin:0;}

/* ---------- FAQ ---------- */
.faq-list{display:flex;flex-direction:column;gap:12px;}
.faq-item{
  position:relative;background:var(--card);border:1px solid var(--line);
  border-radius:var(--r-md);overflow:hidden;
  transition:border-color .22s ease-out,box-shadow .22s ease-out;
}
.faq-item.is-open{border-color:rgba(46,230,255,.3);box-shadow:0 0 0 1px rgba(46,230,255,.06),var(--sh-soft);}
.faq-item.is-open::before{content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:var(--cyan);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 22px;background:none;border:0;text-align:left;
  color:var(--tx);font-size:16px;font-weight:600;line-height:1.6;
}
.faq-q:hover{color:var(--cyan);}
.faq-ico{
  flex:0 0 22px;width:22px;height:22px;position:relative;
  border-radius:50%;border:1px solid var(--line-cyan);
  transition:transform .24s ease-out,border-color .24s ease-out;
}
.faq-ico::before,.faq-ico::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--cyan);border-radius:2px;
  transform:translate(-50%,-50%);
  transition:opacity .24s ease-out;
}
.faq-ico::before{width:10px;height:1.5px;}
.faq-ico::after{width:1.5px;height:10px;}
.faq-item.is-open .faq-ico::after{opacity:0;}
.faq-item.is-open .faq-ico{border-color:rgba(46,230,255,.6);}
.faq-a{
  max-height:0;overflow:hidden;
  transition:max-height .28s ease-out;
}
.faq-a-inner{padding:0 22px 20px;color:var(--tx-2);font-size:15px;line-height:1.9;}
.faq-a-inner p{margin:0 0 10px;}
.faq-a-inner p:last-child{margin:0;}

/* ---------- 侧栏 ---------- */
.side-sticky{position:sticky;top:100px;display:flex;flex-direction:column;gap:20px;}
.side-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:22px;box-shadow:var(--sh-soft);
}
.side-card h3{font-size:16px;margin-bottom:14px;padding-bottom:12px;border-bottom:1px solid var(--line);}
.jump-list li + li{margin-top:4px;}
.jump-list a{
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  padding:10px 12px;border-radius:var(--r-sm);
  font-size:14px;color:var(--tx-2);background:none;
  transition:background .2s ease-out,color .2s ease-out;
}
.jump-list a:hover{color:var(--cyan);background:rgba(46,230,255,.08);}
.jump-list a .n{font-family:var(--mono);font-size:12px;color:var(--tx-3);}
.side-cta{
  background:linear-gradient(180deg,rgba(46,230,255,.08),rgba(16,27,38,0));
  border:1px solid var(--line-cyan);border-radius:var(--r-lg);
  padding:22px;box-shadow:var(--sh-soft);
}
.side-cta h3{font-size:16px;margin-bottom:8px;border:0;padding:0;}
.side-cta p{font-size:14px;color:var(--tx-2);line-height:1.8;margin:0 0 16px;}
.side-cta .btn{width:100%;}
.side-meta{display:flex;flex-direction:column;gap:10px;margin-top:16px;padding-top:16px;border-top:1px solid var(--line);}
.side-meta div{display:flex;align-items:center;justify-content:space-between;gap:10px;font-size:13px;color:var(--tx-3);}
.side-meta b{font-family:var(--mono);font-variant-numeric:tabular-nums;font-size:14px;color:var(--cyan);font-weight:600;}

/* ---------- 横向 CTA 条 ---------- */
.cta-bar{
  display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap;
  background:var(--ink-2);border:1px solid var(--line);border-left:3px solid var(--cyan);
  border-radius:var(--r-lg);padding:30px 32px;box-shadow:var(--sh-soft);
}
.cta-bar h2{font-size:clamp(20px,2.2vw,26px);line-height:1.4;margin-bottom:8px;}
.cta-bar p{margin:0;color:var(--tx-2);font-size:14px;}
.cta-bar .btn{flex:0 0 auto;}

/* ---------- 页脚 ---------- */
.site-foot{background:#050A0F;border-top:1px solid var(--line);padding:64px 0 28px;margin-top:0;}
.foot-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:36px;}
.foot-brand .brand{font-size:16px;margin-bottom:14px;}
.foot-desc{font-size:14px;color:var(--tx-2);line-height:1.8;margin:0;max-width:280px;}
.foot-col h4{font-size:14px;letter-spacing:.6px;color:var(--tx);margin-bottom:14px;}
.foot-col ul li{margin-bottom:10px;}
.foot-col ul li a,.foot-col ul li{font-size:14px;color:var(--tx-2);background:none;line-height:1.7;}
.foot-col ul li a:hover{color:var(--cyan);}
.foot-bottom{
  margin-top:44px;padding-top:22px;border-top:1px solid var(--line);
  text-align:center;font-size:13px;color:var(--tx-3);line-height:1.9;
}
.foot-bottom .num{color:var(--tx-2);}

/* ---------- 响应式 ---------- */
@media screen and (max-width:1023px){
  .container,.wrap{padding:0 24px;}
  .nav-links{display:none;}
  .nav-cta .btn-primary{display:none;}
  .burger{display:block;}
  :root{--sec:72px;}
  .page-hero{padding:130px 0 68px;}
  .steps{grid-template-columns:1fr;gap:16px;}
  .foot-grid{grid-template-columns:1fr 1fr;gap:28px;}
  .side-sticky{position:static;margin-top:32px;}
  .cta-bar{padding:26px 24px;}
}
@media screen and (max-width:767px){
  .case-grid .cell{margin-bottom:18px;}
  .check-grid .cell{margin-bottom:16px;}
  .foot-grid{grid-template-columns:1fr;}
  .cta-bar{flex-direction:column;align-items:flex-start;}
  .cta-bar .btn{width:100%;}
}
@media screen and (max-width:519px){
  :root{--sec:52px;}
  .container,.wrap{padding:0 18px;}
  .site-head{top:10px;padding:0 10px;}
  .pill-nav{height:60px;padding:0 8px 0 12px;gap:8px;}
  .brand{font-size:14px;gap:8px;}
  .brand-mark{width:28px;height:28px;flex:0 0 28px;border-radius:9px;}
  .page-hero{padding:112px 0 56px;}
  .hero-acts .btn{width:100%;}
  .case-body{padding:18px;}
  .faq-q{padding:16px 16px;font-size:15px;}
  .faq-a-inner{padding:0 16px 18px;}
  .check-card{padding:18px 16px;}
  .side-card,.side-cta{padding:18px;}
  .foot-bottom{font-size:12px;}
}