/* roulang page: index */
:root{
  --bg-deep:#060B16;
  --bg-panel:#0A1224;
  --bg-elev:#101A31;
  --brand:#2BB6F0;
  --brand-2:#2FE0C8;
  --accent:#FFB454;
  --line:rgba(255,255,255,.10);
  --line-strong:rgba(255,255,255,.18);
  --text-hi:#EAF2FF;
  --text-mid:#A8B6CC;
  --text-low:#6E7E96;
  --radius-s:10px;
  --radius-m:16px;
  --radius-l:20px;
  --radius-pill:999px;
  --ease:cubic-bezier(.22,.61,.36,1);
  --shadow-card:0 22px 48px -24px rgba(0,0,0,.72);
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg-deep);
  color:var(--text-hi);
  font-family:system-ui,-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.85;
  font-weight:400;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;height:auto;}
a{color:var(--brand);text-decoration:none;transition:color 240ms var(--ease);}
a:hover{color:var(--brand-2);}
button,input{font:inherit;color:inherit;}
button{background:none;border:none;cursor:pointer;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
:focus-visible{outline:2px solid var(--brand-2);outline-offset:2px;border-radius:6px;}
.container{width:100%;max-width:1240px;margin:0 auto;padding-left:20px;padding-right:20px;}
@media (min-width:768px){.container{padding-left:24px;padding-right:24px;}}
@media (min-width:1024px){.container{padding-left:32px;padding-right:32px;}}

/* ---------- 顶部导航 ---------- */
.site-header{position:sticky;top:0;z-index:60;background:rgba(6,11,22,.78);border-bottom:1px solid var(--line);backdrop-filter:blur(14px) saturate(140%);-webkit-backdrop-filter:blur(14px) saturate(140%);transition:background 240ms var(--ease),border-color 240ms var(--ease);}
.site-header.is-scrolled{background:rgba(6,11,22,.92);}
.nav-top{display:flex;align-items:center;justify-content:space-between;gap:16px;height:64px;transition:height 240ms var(--ease);}
.site-header.is-scrolled .nav-top{height:56px;}
.brand{display:flex;align-items:center;gap:10px;color:var(--text-hi);}
.brand:hover{color:var(--text-hi);}
.brand-mark{position:relative;width:34px;height:34px;flex:0 0 34px;border-radius:11px;background:linear-gradient(135deg,var(--brand),var(--brand-2));display:grid;place-items:center;box-shadow:0 0 22px rgba(43,182,240,.35);}
.brand-mark::after{content:"";position:absolute;inset:0;border-radius:11px;background:radial-gradient(circle at 30% 25%,rgba(255,255,255,.55),transparent 55%);opacity:.8;}
.brand-mark span{position:relative;z-index:1;font-size:15px;font-weight:700;color:#04121C;letter-spacing:-.5px;}
.brand-text{display:flex;flex-direction:column;line-height:1.15;}
.brand-name{font-size:16px;font-weight:700;letter-spacing:-.3px;}
.brand-sub{font-size:11px;color:var(--text-low);letter-spacing:.14em;}
.nav-main{display:none;gap:26px;}
@media (min-width:1024px){.nav-main{display:flex;}}
.nav-main a{color:var(--text-mid);font-size:14.5px;}
.nav-main a:hover{color:var(--text-hi);}
.nav-actions{display:flex;align-items:center;gap:10px;}
.search-wrap{position:relative;display:none;}
@media (min-width:768px){.search-wrap{display:block;}}
.search-toggle{width:38px;height:38px;border-radius:var(--radius-pill);border:1px solid var(--line);display:grid;place-items:center;color:var(--text-mid);transition:all 220ms var(--ease);}
.search-toggle:hover{color:var(--text-hi);border-color:var(--line-strong);background:rgba(255,255,255,.05);}
.search-box{position:absolute;right:0;top:calc(100% + 10px);width:290px;padding:12px;border-radius:var(--radius-m);background:rgba(10,18,36,.96);border:1px solid var(--line-strong);box-shadow:var(--shadow-card);display:none;}
.search-box.is-open{display:block;}
.search-box input{width:100%;padding:11px 14px;border-radius:var(--radius-s);background:rgba(255,255,255,.045);border:1px solid var(--line);color:var(--text-hi);font-size:14px;}
.search-box input::placeholder{color:var(--text-low);}
.search-box input:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(43,182,240,.18);}
.search-hint{margin-top:8px;font-size:12px;color:var(--text-low);}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;font-size:15px;font-weight:600;border-radius:var(--radius-pill);padding:12px 22px;transition:all 240ms var(--ease);white-space:nowrap;}
.btn-primary{background:linear-gradient(135deg,var(--brand),var(--brand-2));color:#04121C;border:1px solid transparent;}
.btn-primary:hover{color:#04121C;filter:brightness(1.08);box-shadow:0 0 24px rgba(43,182,240,.45);}
.btn-primary:active{transform:translateY(1px);}
.btn-ghost{background:transparent;color:var(--text-hi);border:1px solid rgba(255,255,255,.22);}
.btn-ghost:hover{color:var(--text-hi);background:rgba(255,255,255,.06);border-color:var(--brand);}
.btn-ghost:active{transform:translateY(1px);}
.btn-link{display:inline-flex;align-items:center;gap:6px;color:var(--brand);font-size:14.5px;font-weight:600;text-decoration:underline;text-underline-offset:3px;text-decoration-thickness:1px;}
.btn-link:hover{color:var(--brand-2);}
.btn-sm{padding:9px 16px;font-size:14px;}
.nav-cta{display:none;}
@media (min-width:640px){.nav-cta{display:inline-flex;}}
.burger{width:38px;height:38px;border-radius:var(--radius-s);border:1px solid var(--line);display:grid;place-items:center;color:var(--text-mid);}
@media (min-width:1024px){.burger{display:none;}}
.burger span{display:block;width:16px;height:2px;background:currentColor;border-radius:2px;position:relative;}
.burger span::before,.burger span::after{content:"";position:absolute;left:0;width:16px;height:2px;background:currentColor;border-radius:2px;}
.burger span::before{top:-5px;}
.burger span::after{top:5px;}

/* 频道 tabs */
.nav-tabs-wrap{position:relative;border-top:1px solid var(--line);}
.nav-tabs{display:flex;align-items:center;gap:8px;height:46px;overflow-x:auto;scrollbar-width:none;-ms-overflow-style:none;padding-right:24px;}
.nav-tabs::-webkit-scrollbar{display:none;}
.nav-tabs a{flex:0 0 auto;padding:7px 15px;border-radius:var(--radius-pill);font-size:14px;color:var(--text-mid);border:1px solid transparent;transition:all 220ms var(--ease);position:relative;}
.nav-tabs a:hover{color:var(--text-hi);background:rgba(255,255,255,.05);}
.nav-tabs a.active{color:var(--brand);background:rgba(255,255,255,.06);border-color:var(--line);}
.nav-tabs a.active::after{content:"";position:absolute;left:50%;transform:translateX(-50%);bottom:-1px;width:26px;height:2px;border-radius:2px;background:var(--brand);box-shadow:0 0 10px rgba(43,182,240,.8);}
.tabs-fade{position:absolute;top:0;right:0;width:48px;height:100%;background:linear-gradient(90deg,rgba(6,11,22,0),rgba(6,11,22,.95));pointer-events:none;}

/* 移动抽屉 */
.drawer{display:none;border-top:1px solid var(--line);background:rgba(8,14,28,.98);backdrop-filter:blur(14px);}
.drawer.is-open{display:block;}
.drawer-inner{padding:16px 0 22px;}
.drawer a{display:block;padding:12px 4px;color:var(--text-mid);font-size:15px;border-bottom:1px solid var(--line);}
.drawer a.active,.drawer a:hover{color:var(--brand);}
.drawer-cta{margin-top:16px;width:100%;}

/* ---------- 通用板块 ---------- */
.section{padding:56px 0;}
@media (min-width:1024px){.section{padding:96px 0;}}
.section-tight{padding:48px 0;}
@media (min-width:1024px){.section-tight{padding:72px 0;}}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;color:var(--brand-2);letter-spacing:.08em;}
.eyebrow::before{content:"";width:18px;height:1px;background:var(--brand-2);opacity:.7;}
.h1{font-size:clamp(30px,4.6vw,52px);line-height:1.18;font-weight:700;letter-spacing:-.5px;}
.h2{font-size:clamp(24px,3vw,36px);line-height:1.25;font-weight:700;letter-spacing:-.4px;}
.h3{font-size:20px;line-height:1.4;font-weight:600;}
@media (min-width:768px){.h3{font-size:22px;}}
.lead{color:var(--text-mid);font-size:16.5px;line-height:1.85;}
.muted{color:var(--text-mid);}
.low{color:var(--text-low);font-size:13.5px;}
.card{background:rgba(255,255,255,.045);border:1px solid var(--line);border-radius:var(--radius-l);backdrop-filter:blur(14px) saturate(140%);-webkit-backdrop-filter:blur(14px) saturate(140%);box-shadow:inset 0 1px 0 rgba(255,255,255,.06),var(--shadow-card);transition:border-color 240ms var(--ease),transform 240ms var(--ease),box-shadow 240ms var(--ease);}
.card:hover{border-color:var(--line-strong);transform:translateY(-2px);box-shadow:inset 0 1px 0 rgba(255,255,255,.08),0 28px 56px -26px rgba(0,0,0,.8);}
.badge{display:inline-flex;align-items:center;gap:6px;padding:4px 11px;border-radius:var(--radius-pill);font-size:12.5px;color:var(--brand);background:rgba(43,182,240,.10);border:1px solid rgba(43,182,240,.24);}
.badge-amber{color:var(--accent);background:rgba(255,180,84,.10);border-color:rgba(255,180,84,.26);}
.divider-orbit{height:1px;background:linear-gradient(90deg,transparent,rgba(43,182,240,.35) 22%,rgba(47,224,200,.30) 55%,transparent);opacity:.75;}
.orbit-band{position:relative;background:var(--bg-panel);overflow:hidden;}
.orbit-band::before{content:"";position:absolute;left:-10%;right:-10%;top:38%;height:1px;background:linear-gradient(90deg,transparent,rgba(43,182,240,.35),rgba(255,180,84,.18),transparent);transform:rotate(-8deg);opacity:.5;}

/* ---------- Hero ---------- */
.hero{position:relative;overflow:hidden;border-bottom:1px solid var(--line);}
.hero-bg{position:absolute;inset:0;background-image:url('/assets/images/backpic/back-1.webp');background-size:cover;background-position:center;opacity:.55;}
.hero-bg::after{content:"";position:absolute;inset:0;background:linear-gradient(135deg,rgba(6,11,22,.94) 8%,rgba(6,11,22,.78) 48%,rgba(6,11,22,.90) 100%);}
.hero-orbit{position:absolute;inset:0;background:linear-gradient(115deg,transparent 42%,rgba(47,224,200,.16) 50%,transparent 58%);opacity:.5;pointer-events:none;}
.hero-inner{position:relative;z-index:2;padding:44px 0 56px;}
@media (min-width:1024px){.hero-inner{padding:72px 0 88px;}}
.hero-grid{display:grid;gap:32px;align-items:center;}
@media (min-width:1024px){.hero-grid{grid-template-columns:7fr 5fr;gap:48px;}}
.hero-trust{display:flex;flex-wrap:wrap;align-items:center;gap:10px;color:var(--text-mid);font-size:14px;}
.hero-trust i{color:var(--brand-2);font-style:normal;}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;}
.hero-card{overflow:hidden;}
.hero-card-body{padding:22px;}
.hero-card img{width:100%;height:180px;object-fit:cover;border-bottom:1px solid var(--line);}
.check-list li{display:flex;gap:10px;padding:10px 0;border-bottom:1px dashed var(--line);font-size:14.5px;color:var(--text-mid);}
.check-list li:last-child{border-bottom:none;}
.check-list b{color:var(--text-hi);font-weight:600;}
.tick{flex:0 0 20px;width:20px;height:20px;border-radius:6px;background:rgba(47,224,200,.14);color:var(--brand-2);display:grid;place-items:center;font-size:12px;margin-top:3px;}

/* ---------- 痛点 ---------- */
.pain-grid{display:grid;gap:20px;}
@media (min-width:900px){.pain-grid{grid-template-columns:5fr 7fr;gap:32px;}}
.pain-cards{display:grid;gap:20px;grid-template-columns:1fr;}
@media (min-width:640px){.pain-cards{grid-template-columns:repeat(2,1fr);}}
.pain-card{padding:22px;}
@media (min-width:900px){.pain-card:nth-child(2),.pain-card:nth-child(4){transform:translateY(24px);}}
.pain-card:hover{transform:translateY(-2px);}
@media (min-width:900px){.pain-card:nth-child(2):hover,.pain-card:nth-child(4):hover{transform:translateY(22px);}}
.pain-icon{width:38px;height:38px;border-radius:12px;display:grid;place-items:center;background:rgba(255,180,84,.12);color:var(--accent);font-size:15px;font-weight:700;margin-bottom:14px;}

/* ---------- 解决方案 ---------- */
.solution-grid{display:grid;gap:20px;}
@media (min-width:1024px){.solution-grid{grid-template-columns:6fr 6fr;gap:28px;}}
.solution-main{overflow:hidden;}
.solution-main img{width:100%;height:230px;object-fit:cover;border-bottom:1px solid var(--line);}
.solution-main-body{padding:24px;}
.cap-list{display:grid;gap:14px;align-content:start;}
.cap-item{position:relative;display:flex;align-items:center;gap:16px;padding:18px 20px;border-radius:var(--radius-m);background:rgba(255,255,255,.035);border:1px solid var(--line);transition:all 240ms var(--ease);}
.cap-item::before{content:"";position:absolute;left:0;top:14px;bottom:14px;width:3px;border-radius:3px;background:var(--brand);opacity:0;transition:opacity 240ms var(--ease);}
.cap-item:hover{border-color:var(--line-strong);background:rgba(255,255,255,.055);transform:translateX(2px);}
.cap-item:hover::before{opacity:1;}
.cap-icon{flex:0 0 42px;width:42px;height:42px;border-radius:12px;display:grid;place-items:center;background:rgba(43,182,240,.12);color:var(--brand);font-size:14px;font-weight:700;}
.cap-arrow{color:var(--text-low);font-size:18px;}

/* ---------- 成果 ---------- */
.stat-grid{display:grid;gap:20px;grid-template-columns:repeat(2,1fr);}
@media (min-width:1024px){.stat-grid{grid-template-columns:repeat(4,1fr);gap:28px;}}
.stat-num{font-size:clamp(30px,3.6vw,44px);font-weight:700;color:var(--accent);font-variant-numeric:tabular-nums;line-height:1.1;letter-spacing:-.5px;}
.stat-label{margin-top:6px;font-size:15px;color:var(--text-hi);font-weight:600;}
.stat-note{color:var(--text-low);font-size:13.5px;line-height:1.7;}

/* ---------- 证言 ---------- */
.voice-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;flex-wrap:wrap;}
.voice-arrows{display:flex;gap:10px;}
.arrow-btn{width:40px;height:40px;border-radius:var(--radius-pill);border:1px solid var(--line);color:var(--text-mid);display:grid;place-items:center;transition:all 220ms var(--ease);}
.arrow-btn:hover{color:var(--text-hi);border-color:var(--brand);background:rgba(255,255,255,.06);}
.voice-track{display:flex;gap:20px;overflow-x:auto;scroll-snap-type:x mandatory;padding:6px 4px 22px;margin:0 -4px;scrollbar-width:none;}
.voice-track::-webkit-scrollbar{display:none;}
.voice-card{flex:0 0 86%;max-width:380px;scroll-snap-align:start;padding:24px;}
@media (min-width:768px){.voice-card{flex:0 0 62%;}}
@media (min-width:1024px){.voice-card{flex:0 0 340px;}}
.quote-mark{font-size:34px;line-height:1;color:var(--brand);opacity:.35;font-family:Georgia,serif;}
.voice-text{margin-top:8px;color:var(--text-hi);font-size:15.5px;line-height:1.8;}
.voice-meta{display:flex;align-items:center;gap:12px;margin-top:18px;padding-top:16px;border-top:1px solid var(--line);}
.avatar{flex:0 0 40px;width:40px;height:40px;border-radius:var(--radius-pill);background:linear-gradient(135deg,rgba(43,182,240,.28),rgba(47,224,200,.22));border:1px solid var(--line-strong);display:grid;place-items:center;font-size:15px;font-weight:700;color:var(--text-hi);}
.voice-name{font-size:14.5px;font-weight:600;color:var(--text-hi);}
.voice-org{font-size:13px;color:var(--text-low);}

/* ---------- 资讯卡 ---------- */
.news-head{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;flex-wrap:wrap;}
.news-grid{display:grid;gap:20px;grid-template-columns:1fr;}
@media (min-width:768px){.news-grid{grid-template-columns:repeat(2,1fr);gap:24px;}}
@media (min-width:1024px){.news-grid{grid-template-columns:repeat(3,1fr);gap:28px;}}
.news-card{display:flex;flex-direction:column;overflow:hidden;height:100%;}
.news-thumb{position:relative;aspect-ratio:16/9;overflow:hidden;background:var(--bg-elev);}
.news-thumb img{width:100%;height:100%;object-fit:cover;transition:transform 240ms var(--ease);}
.news-card:hover .news-thumb img{transform:scale(1.03);}
.news-body{padding:18px;display:flex;flex-direction:column;gap:10px;flex:1;}
.news-meta{display:flex;align-items:center;gap:10px;flex-wrap:wrap;}
.news-title{font-size:16.5px;font-weight:600;line-height:1.5;color:var(--text-hi);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-card:hover .news-title{color:var(--brand);}
.news-summary{color:var(--text-mid);font-size:14px;line-height:1.75;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;}
.news-foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;padding-top:12px;border-top:1px solid var(--line);font-size:13.5px;color:var(--text-low);}
.empty-state{min-height:240px;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;gap:10px;padding:32px 20px;border-radius:var(--radius-l);border:1px dashed var(--line-strong);background:rgba(255,255,255,.025);}
.empty-icon{width:48px;height:48px;color:var(--brand);}
.empty-title{font-size:16px;font-weight:600;color:var(--text-hi);}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:860px;}
.faq-item{margin-bottom:12px;overflow:hidden;}
.faq-q{width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;padding:18px 20px;text-align:left;font-size:16.5px;font-weight:600;color:var(--text-hi);}
.faq-icon{flex:0 0 22px;width:22px;height:22px;position:relative;transition:transform 240ms var(--ease);color:var(--brand);}
.faq-icon::before,.faq-icon::after{content:"";position:absolute;left:50%;top:50%;background:currentColor;border-radius:2px;transform:translate(-50%,-50%);}
.faq-icon::before{width:14px;height:2px;}
.faq-icon::after{width:2px;height:14px;}
.faq-item.is-open .faq-icon{transform:rotate(45deg);}
.faq-a{max-height:0;overflow:hidden;transition:max-height 260ms var(--ease);}
.faq-item.is-open .faq-a{max-height:340px;}
.faq-a-inner{padding:0 20px 20px;color:var(--text-mid);font-size:15.5px;line-height:1.85;}

/* ---------- 尾部 CTA ---------- */
.cta-panel{position:relative;overflow:hidden;border-radius:var(--radius-l);border:1px solid var(--line-strong);background:rgba(255,255,255,.05);backdrop-filter:blur(14px) saturate(140%);padding:36px 24px;}
@media (min-width:1024px){.cta-panel{padding:56px 48px;}}
.cta-panel::before{content:"";position:absolute;inset:0;background-image:url('/assets/images/backpic/back-3.webp');background-size:cover;background-position:center;opacity:.22;}
.cta-panel::after{content:"";position:absolute;inset:0;background:linear-gradient(135deg,rgba(6,11,22,.86),rgba(10,18,36,.72));}
.cta-inner{position:relative;z-index:2;}
.cta-form{display:grid;gap:14px;margin-top:26px;}
@media (min-width:768px){.cta-form{grid-template-columns:1fr 1fr auto;align-items:end;}}
.field label{display:block;font-size:13px;color:var(--text-mid);margin-bottom:6px;}
.field input,.field select{width:100%;padding:12px 16px;border-radius:var(--radius-m);background:rgba(255,255,255,.05);border:1px solid var(--line);color:var(--text-hi);font-size:15px;}
.field input::placeholder{color:var(--text-low);}
.field input:focus,.field select:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(43,182,240,.18);}
.form-note{font-size:13px;color:var(--text-low);margin-top:12px;}

/* ---------- 页脚 ---------- */
.site-footer{background:#040811;border-top:1px solid var(--line);padding:52px 0 26px;margin-top:0;}
.footer-grid{display:grid;gap:32px;grid-template-columns:1fr;}
@media (min-width:640px){.footer-grid{grid-template-columns:repeat(2,1fr);}}
@media (min-width:1024px){.footer-grid{grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px;}}
.footer-title{font-size:14px;font-weight:600;color:var(--text-hi);margin-bottom:14px;letter-spacing:.02em;}
.footer-links li{margin-bottom:10px;}
.footer-links a{color:var(--text-mid);font-size:14.5px;}
.footer-links a:hover{color:var(--brand-2);}
.footer-desc{color:var(--text-mid);font-size:14.5px;line-height:1.8;margin-top:14px;max-width:340px;}
.footer-bottom{margin-top:36px;padding-top:20px;border-top:1px solid var(--line);display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;align-items:center;color:var(--text-low);font-size:13px;}

@media (prefers-reduced-motion:reduce){
  *{transition-duration:.001ms !important;animation-duration:.001ms !important;}
}

/* roulang page: category1 */
:root{
  --bg-deep:#060B16;
  --bg-panel:#0A1224;
  --bg-elev:#101A31;
  --brand:#2BB6F0;
  --brand-2:#2FE0C8;
  --accent:#FFB454;
  --line:rgba(255,255,255,.10);
  --line-strong:rgba(255,255,255,.18);
  --text-hi:#EAF2FF;
  --text-mid:#A8B6CC;
  --text-low:#6E7E96;
  --glow:0 0 28px rgba(43,182,240,.40);
  --radius-s:10px;
  --radius-m:16px;
  --radius-l:20px;
  --radius-pill:999px;
  --ease:cubic-bezier(.22,.61,.36,1);
  --header-h:108px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg-deep);
  color:var(--text-hi);
  font-family:system-ui,-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:17px;
  line-height:1.85;
  letter-spacing:0;
  overflow-x:hidden;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;transition:color 240ms var(--ease),opacity 240ms var(--ease);}
button,input{font:inherit;color:inherit;}
button{background:none;border:0;cursor:pointer;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{margin:0;line-height:1.28;font-weight:700;letter-spacing:-.3px;}
p{margin:0;}
:focus-visible{outline:2px solid var(--brand-2);outline-offset:2px;border-radius:6px;}
::selection{background:rgba(43,182,240,.35);}

.container{
  width:100%;
  max-width:1240px;
  margin:0 auto;
  padding-left:20px;
  padding-right:20px;
}
@media (min-width:768px){ .container{padding-left:24px;padding-right:24px;} }
@media (min-width:1024px){ .container{padding-left:32px;padding-right:32px;} }

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 22px;border-radius:var(--radius-pill);
  font-size:15px;font-weight:600;line-height:1.2;
  transition:transform 240ms var(--ease),box-shadow 240ms var(--ease),background 240ms var(--ease),border-color 240ms var(--ease),filter 240ms var(--ease);
  white-space:nowrap;
}
.btn-primary{
  background:linear-gradient(135deg,var(--brand),var(--brand-2));
  color:#04121C;
  box-shadow:0 10px 26px -14px rgba(43,182,240,.9);
}
.btn-primary:hover{filter:brightness(1.08);box-shadow:0 0 24px rgba(43,182,240,.45);transform:translateY(-2px);}
.btn-primary:active{transform:translateY(1px);}
.btn-ghost{
  border:1px solid rgba(255,255,255,.22);
  color:var(--text-hi);
}
.btn-ghost:hover{background:rgba(255,255,255,.06);border-color:var(--brand);}
.btn-ghost:active{transform:translateY(1px);}
.link-arrow{
  color:var(--brand);font-weight:600;font-size:15px;
  display:inline-flex;align-items:center;gap:6px;
  border-bottom:1px solid transparent;
}
.link-arrow:hover{color:var(--brand-2);border-bottom-color:rgba(47,224,200,.6);}

/* ---------- 徽章 ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 12px;border-radius:var(--radius-pill);
  font-size:12.5px;font-weight:600;line-height:1.6;
  background:rgba(255,255,255,.045);
  border:1px solid var(--line);
  color:var(--brand);
  backdrop-filter:blur(10px);
}
.badge-amber{color:var(--accent);}
.badge-mint{color:var(--brand-2);}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:200;
  background:rgba(6,11,22,.86);
  backdrop-filter:blur(14px) saturate(140%);
  border-bottom:1px solid var(--line);
  transition:background 240ms var(--ease);
}
.site-header.scrolled{background:rgba(6,11,22,.92);}
.nav-top-inner{
  display:flex;align-items:center;gap:20px;
  min-height:62px;
  padding-top:10px;padding-bottom:10px;
  transition:min-height 240ms var(--ease),padding 240ms var(--ease);
}
.site-header.scrolled .nav-top-inner{min-height:54px;padding-top:6px;padding-bottom:6px;}

.brand{display:inline-flex;align-items:center;gap:10px;flex-shrink:0;}
.brand-mark{
  width:38px;height:38px;border-radius:12px;
  background:linear-gradient(135deg,rgba(43,182,240,.9),rgba(47,224,200,.75));
  color:#04121C;font-weight:800;font-size:14px;
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 0 22px rgba(43,182,240,.32);
}
.brand-text{display:flex;flex-direction:column;line-height:1.15;}
.brand-name{font-size:17px;font-weight:700;color:var(--text-hi);letter-spacing:.2px;}
.brand-sub{font-size:11.5px;color:var(--text-low);letter-spacing:2.5px;}

.nav-main{display:none;align-items:center;gap:22px;margin-left:12px;}
.nav-main a{font-size:15px;color:var(--text-mid);}
.nav-main a:hover{color:var(--text-hi);}
.nav-main a.active{color:var(--brand);}

.nav-actions{display:flex;align-items:center;gap:10px;margin-left:auto;}
.nav-search{
  display:none;align-items:center;
  background:rgba(255,255,255,.045);
  border:1px solid var(--line);
  border-radius:var(--radius-m);
  padding:6px 12px;
  transition:border-color 240ms var(--ease),box-shadow 240ms var(--ease);
}
.nav-search:focus-within{border-color:var(--brand);box-shadow:var(--glow);}
.nav-search input{
  background:transparent;border:0;outline:none;
  width:150px;font-size:14px;color:var(--text-hi);
}
.nav-search input::placeholder{color:var(--text-low);}
.icon-btn{
  width:40px;height:40px;border-radius:12px;
  border:1px solid var(--line);
  display:none;align-items:center;justify-content:center;
  color:var(--text-mid);
  transition:border-color 240ms var(--ease),color 240ms var(--ease),background 240ms var(--ease);
}
.icon-btn:hover{border-color:var(--brand);color:var(--text-hi);background:rgba(255,255,255,.05);}
.hamburger{
  width:42px;height:42px;border-radius:12px;
  border:1px solid var(--line);
  display:flex;align-items:center;justify-content:center;
  color:var(--text-hi);
}
.hamburger:hover{border-color:var(--brand);}

.tabs-row{border-top:1px solid var(--line);}
.tabs-scroll{
  display:flex;align-items:center;gap:8px;
  height:46px;overflow-x:auto;
  scrollbar-width:none;-ms-overflow-style:none;
  -webkit-overflow-scrolling:touch;
}
.tabs-scroll::-webkit-scrollbar{display:none;}
.tab{
  flex:0 0 auto;
  padding:6px 16px;border-radius:var(--radius-pill);
  font-size:14.5px;font-weight:500;color:var(--text-mid);
  border:1px solid transparent;
  position:relative;
  transition:color 240ms var(--ease),background 240ms var(--ease),border-color 240ms var(--ease);
}
.tab:hover{color:var(--text-hi);background:rgba(255,255,255,.05);}
.tab.active{
  color:var(--brand);
  background:rgba(255,255,255,.06);
  border-color:var(--line);
}
.tab.active::after{
  content:"";position:absolute;left:50%;bottom:-1px;transform:translateX(-50%);
  width:22px;height:2px;border-radius:2px;
  background:linear-gradient(135deg,var(--brand),var(--brand-2));
  box-shadow:0 0 10px rgba(43,182,240,.7);
}
.tabs-wrap-mask{position:relative;}
.tabs-wrap-mask::after{
  content:"";position:absolute;right:0;top:0;bottom:0;width:16px;
  background:linear-gradient(90deg,rgba(6,11,22,0),rgba(6,11,22,.95));
  pointer-events:none;
}

.mobile-drawer{
  display:none;
  border-top:1px solid var(--line);
  background:rgba(10,18,36,.96);
  backdrop-filter:blur(16px);
  padding:14px 20px 22px;
}
.mobile-drawer.open{display:block;}
.mobile-drawer a{
  display:block;padding:11px 4px;font-size:15.5px;color:var(--text-mid);
  border-bottom:1px solid var(--line);
}
.mobile-drawer a.active{color:var(--brand);}
.mobile-drawer .btn{width:100%;margin-top:16px;}

@media (min-width:1024px){
  .nav-main{display:flex;}
  .nav-search{display:flex;}
  .icon-btn{display:flex;}
  .hamburger{display:none;}
  .mobile-drawer{display:none !important;}
}

/* ---------- 分类 Banner ---------- */
.cat-hero{
  position:relative;
  overflow:hidden;
  border-bottom:1px solid var(--line);
}
.cat-hero-bg{
  position:absolute;inset:0;
  background-image:url("/assets/images/backpic/back-2.webp");
  background-size:cover;background-position:center;
  opacity:.55;
}
.cat-hero-bg::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(135deg,rgba(6,11,22,.94) 8%,rgba(6,11,22,.72) 52%,rgba(6,11,22,.90) 100%);
}
.cat-hero-orbit{
  position:absolute;left:-8%;top:-30%;width:70%;height:150%;
  border:1px solid rgba(255,255,255,.08);
  border-radius:50%;
  transform:rotate(-24deg);
  pointer-events:none;
}
.cat-hero-orbit.two{left:auto;right:-14%;top:-46%;width:56%;border-color:rgba(43,182,240,.08);}
.cat-hero-inner{position:relative;padding:52px 0 56px;}
@media (min-width:1024px){ .cat-hero-inner{padding:72px 0 78px;} }
.crumb{
  display:flex;align-items:center;gap:8px;flex-wrap:wrap;
  font-size:13.5px;color:var(--text-low);margin-bottom:18px;
}
.crumb a{color:var(--text-mid);}
.crumb a:hover{color:var(--brand);}
.crumb .sep{opacity:.5;}
.crumb .cur{color:var(--text-hi);}
.cat-hero h1{
  font-size:clamp(30px,4.6vw,52px);
  line-height:1.18;letter-spacing:-.5px;
  max-width:900px;
}
.cat-hero h1 .hl{
  background:linear-gradient(135deg,var(--brand),var(--brand-2));
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.cat-lead{
  margin-top:20px;max-width:760px;
  font-size:16.5px;color:var(--text-mid);
}
.hero-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px;
  margin-top:24px;
}
.hero-meta .dot{font-size:14px;color:var(--text-low);}
.cat-hero-cta{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px;}

/* ---------- 主体区 ---------- */
.section{padding:56px 0;}
@media (min-width:1024px){ .section{padding:96px 0;} }
.section-tight{padding:44px 0;}
@media (min-width:1024px){ .section-tight{padding:70px 0;} }

.cat-layout{
  display:grid;grid-template-columns:1fr;gap:32px;align-items:start;
}
@media (min-width:1024px){
  .cat-layout{grid-template-columns:216px minmax(0,1fr);gap:52px;}
}
.anchor-nav{
  display:none;
  position:sticky;top:calc(var(--header-h) + 16px);
  border-left:1px solid var(--line);
  padding-left:18px;
}
@media (min-width:1024px){ .anchor-nav{display:block;} }
.anchor-nav .anchor-title{
  font-size:12.5px;letter-spacing:2px;color:var(--text-low);
  font-weight:600;margin-bottom:14px;
}
.anchor-nav a{
  display:block;padding:8px 0;font-size:14.5px;color:var(--text-mid);
  position:relative;transition:color 240ms var(--ease),padding-left 240ms var(--ease);
}
.anchor-nav a::before{
  content:"";position:absolute;left:-19px;top:50%;transform:translateY(-50%) scaleY(0);
  width:2px;height:16px;border-radius:2px;
  background:linear-gradient(180deg,var(--brand),var(--brand-2));
  transition:transform 240ms var(--ease);
}
.anchor-nav a:hover{color:var(--text-hi);padding-left:4px;}
.anchor-nav a.current{color:var(--brand);}
.anchor-nav a.current::before{transform:translateY(-50%) scaleY(1);}

.content-block{padding-bottom:8px;}
.content-block + .content-block{margin-top:44px;}
@media (min-width:1024px){ .content-block + .content-block{margin-top:60px;} }
.orbit-divider{
  height:1px;width:100%;margin:0 0 40px;
  background:linear-gradient(90deg,rgba(43,182,240,0),rgba(43,182,240,.22),rgba(47,224,200,.14),rgba(255,255,255,0));
}
.content-block h2{
  font-size:clamp(24px,3vw,34px);
  line-height:1.25;
  margin-bottom:14px;
  position:relative;padding-left:16px;
}
.content-block h2::before{
  content:"";position:absolute;left:0;top:.18em;bottom:.18em;width:3px;border-radius:3px;
  background:linear-gradient(180deg,var(--brand),var(--brand-2));
}
.content-block h3{font-size:20px;margin:26px 0 10px;}
.content-block p{color:var(--text-mid);font-size:16.5px;line-height:1.85;}
.content-block p + p{margin-top:16px;}

.zigzag{
  display:grid;grid-template-columns:1fr;gap:26px;align-items:center;
  margin-top:26px;
}
@media (min-width:768px){
  .zigzag{grid-template-columns:1fr 1fr;gap:34px;}
  .zigzag .zz-media{order:2;}
  .zigzag.reverse .zz-media{order:1;}
}
.zz-media{
  border-radius:var(--radius-l);
  overflow:hidden;
  border:1px solid var(--line);
  background:var(--bg-elev);
  box-shadow:0 22px 48px -24px rgba(0,0,0,.72);
}
.zz-media img{width:100%;height:auto;aspect-ratio:16/10;object-fit:cover;transition:transform 240ms var(--ease);}
.zz-media:hover img{transform:scale(1.03);}
.zz-body{color:var(--text-mid);font-size:16.5px;}

.check-list li{
  position:relative;padding-left:26px;margin-bottom:12px;
  color:var(--text-mid);font-size:16px;line-height:1.8;
}
.check-list li::before{
  content:"\f00c";
  font-family:"Font Awesome 6 Free";font-weight:900;font-size:12px;
  position:absolute;left:0;top:.45em;color:var(--brand-2);
}
.num-list{counter-reset:steps;}
.num-list li{
  position:relative;padding-left:38px;margin-bottom:16px;
  color:var(--text-mid);font-size:16px;line-height:1.8;
}
.num-list li::before{
  counter-increment:steps;content:counter(steps,decimal-leading-zero);
  position:absolute;left:0;top:0;
  font-size:13px;font-weight:700;color:var(--accent);
  font-variant-numeric:tabular-nums;
  border:1px solid rgba(255,180,84,.28);
  border-radius:8px;padding:1px 8px;line-height:1.7;
}

.metric-grid{
  display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;margin-top:26px;
}
@media (min-width:768px){ .metric-grid{grid-template-columns:repeat(4,minmax(0,1fr));gap:20px;} }
.metric{
  background:rgba(255,255,255,.045);
  border:1px solid var(--line);
  border-radius:var(--radius-m);
  padding:18px 18px 20px;
  box-shadow:inset 0 1px 0 rgba(255,255,255,.06);
  transition:border-color 240ms var(--ease),transform 240ms var(--ease);
}
.metric:hover{border-color:var(--line-strong);transform:translateY(-2px);}
.metric .num{
  font-size:clamp(26px,3.4vw,34px);font-weight:700;color:var(--accent);
  font-variant-numeric:tabular-nums;line-height:1.15;letter-spacing:-.5px;
}
.metric .lbl{font-size:13.5px;color:var(--text-low);margin-top:6px;line-height:1.6;}

.glass-card{
  background:rgba(255,255,255,.045);
  backdrop-filter:blur(14px) saturate(140%);
  border:1px solid var(--line);
  border-radius:var(--radius-l);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.06),0 22px 48px -24px rgba(0,0,0,.72);
  padding:22px;
  transition:border-color 240ms var(--ease),transform 240ms var(--ease),box-shadow 240ms var(--ease);
}
.glass-card:hover{border-color:var(--line-strong);transform:translateY(-2px);box-shadow:inset 0 1px 0 rgba(255,255,255,.06),0 28px 56px -24px rgba(0,0,0,.8);}
.card-grid{
  display:grid;grid-template-columns:1fr;gap:18px;margin-top:26px;
}
@media (min-width:768px){ .card-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:22px;} }
@media (min-width:1200px){ .card-grid.three{grid-template-columns:repeat(3,minmax(0,1fr));} }
.glass-card h3{font-size:18px;margin-bottom:8px;display:flex;align-items:center;gap:10px;}
.glass-card h3 i{color:var(--brand);font-size:15px;}
.glass-card p{font-size:15px;color:var(--text-mid);line-height:1.8;}

.note{
  margin-top:26px;
  border-left:3px solid var(--brand);
  background:rgba(43,182,240,.06);
  border-radius:0 var(--radius-m) var(--radius-m) 0;
  padding:16px 20px;
  font-size:15px;color:var(--text-mid);
}

.data-table-wrap{margin-top:26px;overflow-x:auto;border:1px solid var(--line);border-radius:var(--radius-m);}
table.data-table{width:100%;border-collapse:collapse;min-width:560px;font-size:15px;}
table.data-table th,table.data-table td{
  padding:13px 16px;text-align:left;border-bottom:1px solid var(--line);color:var(--text-mid);
}
table.data-table th{color:var(--text-hi);font-weight:600;font-size:14px;background:rgba(255,255,255,.03);}
table.data-table tbody tr:nth-child(even){background:rgba(255,255,255,.02);}
table.data-table tbody tr:last-child td{border-bottom:0;}
table.data-table td.k{color:var(--accent);font-variant-numeric:tabular-nums;}

/* ---------- CTA ---------- */
.cta-panel{
  position:relative;overflow:hidden;
  border-radius:var(--radius-l);
  border:1px solid var(--line);
  background:rgba(255,255,255,.045);
  backdrop-filter:blur(14px) saturate(140%);
  padding:38px 24px;
  box-shadow:0 22px 48px -24px rgba(0,0,0,.72);
}
@media (min-width:1024px){ .cta-panel{padding:52px 48px;} }
.cta-panel::before{
  content:"";position:absolute;inset:0;
  background-image:url("/assets/images/backpic/back-3.webp");
  background-size:cover;background-position:center;
  opacity:.16;
}
.cta-panel::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(135deg,rgba(6,11,22,.72),rgba(6,11,22,.5));
}
.cta-inner{position:relative;display:grid;gap:26px;}
@media (min-width:1024px){ .cta-inner{grid-template-columns:minmax(0,1.35fr) minmax(0,1fr);align-items:center;gap:56px;} }
.cta-inner h2{font-size:clamp(24px,3vw,34px);line-height:1.25;}
.cta-inner p{color:var(--text-mid);margin-top:14px;font-size:16px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:24px;}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:860px;}
.faq-item{
  border:1px solid var(--line);
  border-radius:var(--radius-m);
  background:rgba(255,255,255,.045);
  backdrop-filter:blur(12px);
  margin-bottom:12px;
  overflow:hidden;
  transition:border-color 240ms var(--ease);
}
.faq-item:hover{border-color:var(--line-strong);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:17px 20px;text-align:left;
  font-size:16.5px;font-weight:600;color:var(--text-hi);
}
.faq-q i{color:var(--brand);font-size:14px;transition:transform 240ms var(--ease);flex-shrink:0;}
.faq-item.open .faq-q i{transform:rotate(45deg);}
.faq-a{
  max-height:0;overflow:hidden;
  transition:max-height 260ms var(--ease);
}
.faq-a-inner{padding:0 20px 18px;color:var(--text-mid);font-size:15.5px;line-height:1.8;}

/* ---------- 页脚 ---------- */
.site-footer{
  background:#040811;
  border-top:1px solid var(--line);
  margin-top:8px;
}
.footer-grid{
  display:grid;grid-template-columns:1fr;gap:34px;
  padding:52px 0 34px;
}
@media (min-width:768px){ .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:36px;} }
@media (min-width:1024px){ .footer-grid{grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px;padding:64px 0 40px;} }
.footer-desc{
  margin-top:16px;color:var(--text-mid);font-size:14.5px;line-height:1.85;max-width:360px;
}
.footer-title{font-size:14px;font-weight:600;color:var(--text-hi);margin-bottom:16px;letter-spacing:.4px;}
.footer-links li{margin-bottom:10px;}
.footer-links a,.footer-links span{font-size:14.5px;color:var(--text-mid);}
.footer-links a:hover{color:var(--brand-2);}
.footer-links .low{color:var(--text-low);}
.footer-bottom{
  border-top:1px solid var(--line);
  padding:20px 0 26px;
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
  font-size:13.5px;color:var(--text-low);
}

/* ---------- 入场动效 ---------- */
.reveal{opacity:0;transform:translateY(14px);transition:opacity 260ms var(--ease),transform 260ms var(--ease);}
.reveal.in{opacity:1;transform:none;}
@media (prefers-reduced-motion:reduce){
  .reveal{opacity:1;transform:none;transition:none;}
  html{scroll-behavior:auto;}
}

/* roulang page: article */
:root{
    --bg-deep:#060B16;
    --bg-panel:#0A1224;
    --bg-elev:#101A31;
    --brand:#2BB6F0;
    --brand-2:#2FE0C8;
    --accent:#FFB454;
    --line:rgba(255,255,255,.10);
    --line-strong:rgba(255,255,255,.18);
    --text-hi:#EAF2FF;
    --text-mid:#A8B6CC;
    --text-low:#6E7E96;
    --glass:rgba(255,255,255,.045);
    --radius-s:10px;
    --radius-m:16px;
    --radius-l:20px;
    --radius-pill:999px;
    --shadow-card:0 22px 48px -24px rgba(0,0,0,.72);
    --ease:cubic-bezier(.22,.61,.36,1);
  }

  *,*::before,*::after{box-sizing:border-box;}
  html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
  body{
    margin:0;
    padding-top:112px;
    background:var(--bg-deep);
    color:var(--text-mid);
    font-family:system-ui,-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",sans-serif;
    font-size:16px;
    line-height:1.85;
    -webkit-font-smoothing:antialiased;
  }
  body::before{
    content:"";
    position:fixed;
    inset:0;
    pointer-events:none;
    background:
      radial-gradient(900px 480px at 82% -6%,rgba(43,182,240,.10),transparent 66%),
      radial-gradient(700px 420px at 4% 42%,rgba(47,224,200,.06),transparent 70%);
    z-index:0;
  }
  img{max-width:100%;display:block;height:auto;}
  a{color:var(--brand);text-decoration:none;transition:color .22s var(--ease);}
  a:hover{color:var(--brand-2);}
  button{font:inherit;color:inherit;background:none;border:0;cursor:pointer;}
  input{font:inherit;}
  h1,h2,h3,h4{margin:0;color:var(--text-hi);font-weight:700;line-height:1.25;letter-spacing:-.3px;}
  p{margin:0;}
  ul,ol{margin:0;padding:0;list-style:none;}
  :focus-visible{outline:2px solid var(--brand-2);outline-offset:2px;border-radius:6px;}

  .container{
    width:100%;
    max-width:1240px;
    margin:0 auto;
    padding:0 20px;
    position:relative;
    z-index:1;
  }
  @media (min-width:768px){.container{padding:0 24px;}}
  @media (min-width:1024px){.container{padding:0 32px;}}

  /* ---------- 导航 ---------- */
  .site-header{
    position:fixed;
    top:0;left:0;right:0;
    z-index:60;
    background:rgba(6,11,22,.74);
    backdrop-filter:blur(14px) saturate(140%);
    -webkit-backdrop-filter:blur(14px) saturate(140%);
    border-bottom:1px solid var(--line);
    transition:background .24s var(--ease);
  }
  .site-header.is-scrolled{background:rgba(6,11,22,.93);}

  .nav-bar{
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:18px;
    height:64px;
    transition:height .24s var(--ease);
  }
  .site-header.is-scrolled .nav-bar{height:56px;}

  .brand{display:flex;align-items:center;gap:11px;color:var(--text-hi);}
  .brand:hover{color:var(--text-hi);}
  .brand-mark{
    width:38px;height:38px;
    display:grid;place-items:center;
    border-radius:12px;
    background:linear-gradient(135deg,var(--brand),var(--brand-2));
    color:#04121C;
    font-size:15px;
    font-weight:800;
    letter-spacing:-.5px;
    box-shadow:0 0 24px rgba(43,182,240,.32);
    flex:none;
  }
  .brand-text{display:flex;flex-direction:column;line-height:1.15;}
  .brand-name{font-size:17px;font-weight:800;letter-spacing:-.4px;}
  .brand-sub{font-size:11px;color:var(--text-low);letter-spacing:2px;}

  .nav-actions{display:flex;align-items:center;gap:10px;}
  .icon-btn{
    width:40px;height:40px;
    display:grid;place-items:center;
    border-radius:var(--radius-pill);
    border:1px solid var(--line);
    background:var(--glass);
    color:var(--text-mid);
    transition:all .22s var(--ease);
  }
  .icon-btn:hover{border-color:var(--brand);color:var(--text-hi);background:rgba(43,182,240,.10);}
  .icon-btn svg{width:17px;height:17px;}

  .nav-search{position:relative;display:flex;align-items:center;gap:8px;}
  .search-box{
    width:0;
    opacity:0;
    overflow:hidden;
    transition:width .26s var(--ease),opacity .26s var(--ease);
  }
  .search-box.open{width:230px;opacity:1;}
  .search-box input{
    width:100%;
    padding:10px 14px;
    border-radius:var(--radius-m);
    border:1px solid var(--line);
    background:rgba(255,255,255,.05);
    color:var(--text-hi);
    font-size:14px;
    transition:border-color .22s var(--ease),box-shadow .22s var(--ease);
  }
  .search-box input::placeholder{color:var(--text-low);}
  .search-box input:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(43,182,240,.16);}

  .btn{
    display:inline-flex;
    align-items:center;
    justify-content:center;
    gap:8px;
    font-size:15px;
    font-weight:600;
    padding:12px 22px;
    border-radius:var(--radius-pill);
    white-space:nowrap;
    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(135deg,var(--brand),var(--brand-2));
    color:#04121C;
    box-shadow:0 10px 28px -14px rgba(43,182,240,.75);
  }
  .btn-primary:hover{color:#04121C;filter:brightness(1.08);box-shadow:0 0 24px rgba(43,182,240,.45);}
  .btn-primary:active{transform:translateY(1px);}
  .btn-ghost{
    padding:8px 16px;
    border:1px solid rgba(255,255,255,.22);
    color:var(--text-hi);
    background:transparent;
  }
  .btn-ghost:hover{background:rgba(255,255,255,.06);border-color:var(--brand);color:var(--text-hi);}

  .nav-tabs-wrap{
    position:relative;
    border-top:1px solid var(--line);
    -webkit-mask-image:linear-gradient(90deg,transparent 0,#000 18px,#000 calc(100% - 18px),transparent 100%);
    mask-image:linear-gradient(90deg,transparent 0,#000 18px,#000 calc(100% - 18px),transparent 100%);
  }
  .nav-main{
    display:flex;
    align-items:center;
    gap:8px;
    height:48px;
    overflow-x:auto;
    scrollbar-width:none;
    -ms-overflow-style:none;
  }
  .nav-main::-webkit-scrollbar{display:none;}
  .nav-main a{
    position:relative;
    display:inline-flex;
    align-items:center;
    padding:8px 15px;
    font-size:14px;
    color:var(--text-mid);
    border-radius:var(--radius-pill);
    white-space:nowrap;
    transition:all .22s var(--ease);
  }
  .nav-main a:hover{color:var(--text-hi);background:rgba(255,255,255,.05);}
  .nav-main a.active{
    color:var(--brand);
    background:rgba(43,182,240,.12);
    box-shadow:inset 0 0 0 1px rgba(43,182,240,.28);
  }
  .nav-main a.active::after{
    content:"";
    position:absolute;
    left:16px;right:16px;bottom:2px;
    height:2px;
    border-radius:2px;
    background:linear-gradient(90deg,var(--brand),var(--brand-2));
    box-shadow:0 0 10px rgba(43,182,240,.75);
  }

  .nav-toggle{display:none;}
  .nav-drawer{
    position:fixed;
    top:0;right:0;
    width:min(84vw,320px);
    height:100%;
    z-index:70;
    padding:24px 22px;
    background:rgba(10,18,36,.95);
    backdrop-filter:blur(18px) saturate(150%);
    -webkit-backdrop-filter:blur(18px) saturate(150%);
    border-left:1px solid var(--line);
    transform:translateX(102%);
    transition:transform .26s var(--ease);
    overflow-y:auto;
  }
  .nav-drawer.open{transform:translateX(0);}
  .nav-drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:20px;}
  .nav-drawer-title{font-size:14px;color:var(--text-low);letter-spacing:2px;}
  .nav-drawer nav{display:flex;flex-direction:column;gap:6px;}
  .nav-drawer nav a{
    display:block;
    padding:12px 14px;
    border-radius:var(--radius-m);
    color:var(--text-mid);
    font-size:15px;
    border:1px solid transparent;
  }
  .nav-drawer nav a:hover{background:rgba(255,255,255,.05);color:var(--text-hi);}
  .nav-drawer nav a.active{color:var(--brand);background:rgba(43,182,240,.12);border-color:rgba(43,182,240,.28);}

  /* ---------- 文章头部 ---------- */
  .article-hero{
    position:relative;
    overflow:hidden;
    padding:30px 0 42px;
    border-bottom:1px solid var(--line);
    background:var(--bg-panel);
  }
  .article-hero::before{
    content:"";
    position:absolute;
    inset:0;
    background-image:url('/assets/images/backpic/back-1.webp');
    background-size:cover;
    background-position:center;
    opacity:.30;
  }
  .article-hero::after{
    content:"";
    position:absolute;
    inset:0;
    background:linear-gradient(180deg,rgba(6,11,22,.80) 0%,rgba(6,11,22,.92) 62%,var(--bg-deep) 100%);
  }
  .article-hero .container{position:relative;z-index:2;}

  .breadcrumb{margin-bottom:22px;}
  .breadcrumb ol{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--text-low);flex-wrap:wrap;}
  .breadcrumb li{display:flex;align-items:center;gap:8px;min-width:0;}
  .breadcrumb li+li::before{content:"/";color:var(--text-low);opacity:.6;}
  .breadcrumb a{color:var(--text-mid);}
  .breadcrumb a:hover{color:var(--brand-2);}
  .breadcrumb li[aria-current] span{
    max-width:min(62vw,520px);
    overflow:hidden;
    text-overflow:ellipsis;
    white-space:nowrap;
    color:var(--text-low);
  }

  .badge{
    display:inline-flex;
    align-items:center;
    gap:6px;
    padding:5px 13px;
    border-radius:var(--radius-pill);
    font-size:12.5px;
    font-weight:600;
    letter-spacing:.3px;
    color:var(--brand);
    background:rgba(255,255,255,.05);
    border:1px solid rgba(43,182,240,.30);
  }
  .badge-accent{color:var(--accent);border-color:rgba(255,180,84,.34);}

  .article-head{max-width:880px;}
  .article-head h1{
    margin:16px 0 0;
    font-size:clamp(26px,3.6vw,40px);
    line-height:1.24;
    letter-spacing:-.5px;
  }
  .article-meta{
    display:flex;
    flex-wrap:wrap;
    align-items:center;
    gap:10px;
    margin-top:14px;
    font-size:13.5px;
    color:var(--text-low);
  }
  .article-meta .dot{opacity:.5;}

  /* ---------- 正文布局 ---------- */
  .article-shell{padding:52px 0 76px;}
  .article-layout{display:grid;grid-template-columns:1fr;gap:34px;}
  @media (min-width:1024px){
    .article-layout{grid-template-columns:minmax(0,1fr) 300px;gap:44px;align-items:start;}
  }

  .article-main{min-width:0;}

  .article-body{
    max-width:780px;
    font-size:17.5px;
    line-height:1.9;
    color:var(--text-mid);
    overflow-wrap:break-word;
  }
  .article-body > *:first-child{margin-top:0;}
  .article-body p{margin:0 0 20px;}
  .article-body h2{
    position:relative;
    margin:40px 0 16px;
    padding-left:15px;
    font-size:clamp(21px,2.3vw,26px);
    color:var(--text-hi);
  }
  .article-body h2::before{
    content:"";
    position:absolute;
    left:0;top:.22em;bottom:.22em;
    width:3px;
    border-radius:3px;
    background:linear-gradient(180deg,var(--brand),var(--brand-2));
  }
  .article-body h3{margin:30px 0 12px;font-size:20px;color:var(--text-hi);}
  .article-body h4{margin:24px 0 10px;font-size:17px;color:var(--text-hi);}
  .article-body ul,.article-body ol{margin:0 0 20px;padding-left:22px;}
  .article-body ul{list-style:none;}
  .article-body ul li{position:relative;margin-bottom:10px;padding-left:18px;}
  .article-body ul li::before{
    content:"";
    position:absolute;
    left:0;top:.72em;
    width:7px;height:7px;
    border-radius:50%;
    background:linear-gradient(135deg,var(--brand),var(--brand-2));
  }
  .article-body ol{list-style:decimal;}
  .article-body ol li{margin-bottom:10px;padding-left:4px;}
  .article-body ol li::marker{color:var(--brand);font-weight:600;}
  .article-body blockquote{
    margin:0 0 22px;
    padding:16px 20px;
    border-left:3px solid var(--brand);
    border-radius:0 var(--radius-m) var(--radius-m) 0;
    background:var(--glass);
    color:var(--text-hi);
  }
  .article-body blockquote p:last-child{margin-bottom:0;}
  .article-body code{
    padding:2px 6px;
    border-radius:6px;
    background:rgba(43,182,240,.12);
    border:1px solid rgba(43,182,240,.20);
    color:var(--brand-2);
    font-size:.92em;
    font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  }
  .article-body pre{
    margin:0 0 22px;
    padding:16px 18px;
    border-radius:var(--radius-m);
    border:1px solid var(--line);
    background:var(--bg-elev);
    overflow-x:auto;
  }
  .article-body pre code{padding:0;border:0;background:none;color:var(--text-hi);}
  .article-body img{
    width:100%;
    border-radius:14px;
    margin:22px 0 8px;
    border:1px solid var(--line);
    background:var(--bg-elev);
  }
  .article-body figure{margin:22px 0;}
  .article-body figcaption{
    margin-top:8px;
    font-size:13px;
    color:var(--text-low);
    text-align:center;
  }
  .article-body table{
    width:100%;
    margin:0 0 22px;
    border-collapse:collapse;
    font-size:15px;
    display:block;
    overflow-x:auto;
    white-space:nowrap;
  }
  .article-body thead th{
    background:rgba(43,182,240,.10);
    color:var(--text-hi);
    font-weight:600;
  }
  .article-body th,.article-body td{
    padding:11px 14px;
    border:1px solid var(--line);
    text-align:left;
  }
  .article-body tbody tr:nth-child(even){background:rgba(255,255,255,.025);}
  .article-body a{color:var(--brand);text-decoration:underline;text-underline-offset:3px;}
  .article-body a:hover{color:var(--brand-2);}
  .article-body hr{border:0;border-top:1px solid var(--line);margin:30px 0;}

  /* 空态 */
  .empty-state{
    display:flex;
    flex-direction:column;
    align-items:center;
    justify-content:center;
    gap:12px;
    min-height:240px;
    text-align:center;
    padding:36px 22px;
    border-radius:var(--radius-l);
    border:1px solid var(--line);
    background:var(--glass);
  }
  .empty-state svg{width:48px;height:48px;color:var(--brand);}
  .empty-state strong{display:block;font-size:18px;color:var(--text-hi);}
  .empty-state span{font-size:14px;color:var(--text-low);}

  /* 文章尾部 */
  .article-foot{
    max-width:780px;
    margin-top:40px;
    padding-top:26px;
    border-top:1px solid var(--line);
    display:flex;
    flex-direction:column;
    gap:22px;
  }
  .foot-block{display:flex;flex-wrap:wrap;align-items:center;gap:10px;}
  .foot-label{font-size:13px;color:var(--text-low);margin-right:2px;}
  .tag{
    display:inline-flex;
    align-items:center;
    padding:6px 14px;
    border-radius:var(--radius-pill);
    font-size:13px;
    color:var(--text-mid);
    background:var(--glass);
    border:1px solid var(--line);
    transition:all .22s var(--ease);
  }
  .tag:hover{color:var(--brand);border-color:rgba(43,182,240,.34);background:rgba(43,182,240,.10);}
  .share-btn{
    display:inline-flex;
    align-items:center;
    gap:8px;
    padding:9px 16px;
    border-radius:var(--radius-pill);
    font-size:14px;
    color:var(--text-hi);
    background:var(--glass);
    border:1px solid var(--line);
    transition:all .22s var(--ease);
  }
  .share-btn:hover{border-color:var(--brand);color:var(--text-hi);background:rgba(43,182,240,.10);}
  .share-btn.copied{border-color:var(--brand-2);color:var(--brand-2);}
  .share-btn svg{width:16px;height:16px;}

  /* ---------- 侧栏 ---------- */
  .article-side{display:none;}
  @media (min-width:1024px){
    .article-side{display:flex;flex-direction:column;gap:20px;position:sticky;top:132px;}
  }
  .glass-card{
    border-radius:var(--radius-l);
    border:1px solid var(--line);
    background:var(--glass);
    backdrop-filter:blur(14px) saturate(140%);
    -webkit-backdrop-filter:blur(14px) saturate(140%);
    box-shadow:inset 0 1px 0 rgba(255,255,255,.06),var(--shadow-card);
    padding:20px;
  }
  .side-title{
    font-size:15px;
    color:var(--text-hi);
    margin-bottom:14px;
    padding-left:11px;
    position:relative;
  }
  .side-title::before{
    content:"";
    position:absolute;left:0;top:.24em;bottom:.24em;
    width:3px;border-radius:3px;
    background:linear-gradient(180deg,var(--brand),var(--brand-2));
  }
  .side-links{display:flex;flex-direction:column;gap:4px;}
  .side-links a{
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:8px;
    padding:9px 11px;
    border-radius:var(--radius-s);
    font-size:14px;
    color:var(--text-mid);
    transition:all .22s var(--ease);
  }
  .side-links a:hover{background:rgba(255,255,255,.05);color:var(--brand-2);}
  .side-links a svg{width:14px;height:14px;opacity:.55;flex:none;}

  .side-post{display:flex;gap:12px;padding:10px 0;border-top:1px solid var(--line);}
  .side-post:first-of-type{border-top:0;padding-top:0;}
  .side-post img{
    width:74px;height:56px;
    object-fit:cover;
    border-radius:var(--radius-s);
    border:1px solid var(--line);
    flex:none;
    background:var(--bg-elev);
  }
  .side-post .sp-title{
    font-size:13.5px;
    line-height:1.55;
    color:var(--text-mid);
    display:-webkit-box;
    -webkit-line-clamp:2;
    -webkit-box-orient:vertical;
    overflow:hidden;
  }
  .side-post:hover .sp-title{color:var(--brand-2);}
  .side-post .sp-date{font-size:12px;color:var(--text-low);margin-top:6px;display:block;}

  /* ---------- 相关推荐 ---------- */
  .section{padding:64px 0;}
  @media (min-width:1024px){.section{padding:92px 0;}}
  .section-head{
    display:flex;
    align-items:flex-end;
    justify-content:space-between;
    gap:18px;
    margin-bottom:30px;
  }
  .section-head h2{font-size:clamp(22px,2.6vw,30px);}
  .section-head p{margin-top:8px;font-size:14px;color:var(--text-low);}
  .text-link{
    font-size:14px;
    color:var(--brand);
    text-decoration:underline;
    text-underline-offset:4px;
    white-space:nowrap;
  }
  .text-link:hover{color:var(--brand-2);}

  .card-grid{display:grid;grid-template-columns:1fr;gap:20px;}
  @media (min-width:768px){.card-grid{grid-template-columns:repeat(2,1fr);gap:24px;}}
  @media (min-width:1024px){.card-grid{grid-template-columns:repeat(3,1fr);gap:28px;}}

  .card{
    display:flex;
    flex-direction:column;
    overflow:hidden;
    border-radius:var(--radius-l);
    border:1px solid var(--line);
    background:var(--glass);
    backdrop-filter:blur(14px) saturate(140%);
    -webkit-backdrop-filter:blur(14px) saturate(140%);
    box-shadow:inset 0 1px 0 rgba(255,255,255,.06),var(--shadow-card);
    transition:transform .24s var(--ease),border-color .24s var(--ease),box-shadow .24s var(--ease);
  }
  .card:hover{
    transform:translateY(-2px);
    border-color:var(--line-strong);
    box-shadow:0 30px 60px -26px rgba(0,0,0,.85);
  }
  .card-thumb{position:relative;aspect-ratio:16/9;overflow:hidden;background:var(--bg-elev);}
  .card-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .24s var(--ease);}
  .card:hover .card-thumb img{transform:scale(1.03);}
  .card-body{padding:18px;display:flex;flex-direction:column;gap:10px;flex:1;}
  .card-meta{display:flex;align-items:center;gap:10px;font-size:12.5px;color:var(--text-low);flex-wrap:wrap;}
  .card-body h3{
    font-size:17px;
    line-height:1.5;
    display:-webkit-box;
    -webkit-line-clamp:2;
    -webkit-box-orient:vertical;
    overflow:hidden;
  }
  .card:hover .card-body h3{color:var(--text-hi);}
  .card-body p{
    font-size:14px;
    color:var(--text-mid);
    line-height:1.75;
    display:-webkit-box;
    -webkit-line-clamp:3;
    -webkit-box-orient:vertical;
    overflow:hidden;
  }
  .card-more{
    margin-top:auto;
    display:inline-flex;
    align-items:center;
    gap:6px;
    font-size:13.5px;
    color:var(--brand);
  }
  .card-more svg{width:14px;height:14px;transition:transform .24s var(--ease);}
  .card:hover .card-more svg{transform:translateX(3px);}

  /* ---------- CTA ---------- */
  .cta-band{
    position:relative;
    overflow:hidden;
    border-radius:var(--radius-l);
    border:1px solid var(--line);
    background:var(--bg-elev);
    padding:44px 26px;
    text-align:center;
  }
  .cta-band::before{
    content:"";
    position:absolute;
    inset:0;
    background-image:url('/assets/images/backpic/back-2.webp');
    background-size:cover;
    background-position:center;
    opacity:.28;
  }
  .cta-band::after{
    content:"";
    position:absolute;
    inset:0;
    background:linear-gradient(135deg,rgba(6,11,22,.90),rgba(10,18,36,.86));
  }
  .cta-band > *{position:relative;z-index:2;}
  .cta-band h2{font-size:clamp(22px,2.8vw,32px);}
  .cta-band p{max-width:640px;margin:14px auto 26px;font-size:15.5px;color:var(--text-mid);}
  .cta-actions{display:flex;flex-wrap:wrap;gap:14px;justify-content:center;align-items:center;}
  @media (min-width:640px){.cta-band{padding:56px 48px;}}

  /* ---------- 页脚 ---------- */
  .site-footer{
    margin-top:20px;
    background:#040811;
    border-top:1px solid var(--line);
    padding:52px 0 26px;
    position:relative;
    z-index:1;
  }
  .footer-grid{display:grid;grid-template-columns:1fr;gap:30px;}
  @media (min-width:640px){.footer-grid{grid-template-columns:repeat(2,1fr);}}
  @media (min-width:1024px){.footer-grid{grid-template-columns:1.5fr 1fr 1fr 1fr;gap:38px;}}
  .footer-desc{margin-top:16px;font-size:14px;color:var(--text-low);max-width:340px;line-height:1.8;}
  .footer-title{font-size:14px;color:var(--text-hi);margin-bottom:14px;}
  .footer-links{display:flex;flex-direction:column;gap:10px;}
  .footer-links a,.footer-links span{font-size:14px;color:var(--text-mid);}
  .footer-links a:hover{color:var(--brand-2);}
  .footer-links .low{color:var(--text-low);}
  .footer-bottom{
    margin-top:36px;
    padding-top:20px;
    border-top:1px solid var(--line);
    display:flex;
    flex-wrap:wrap;
    gap:10px;
    justify-content:space-between;
    font-size:13px;
    color:var(--text-low);
  }

  @media (max-width:1023px){
    body{padding-top:100px;}
    .nav-bar{height:56px;}
    .nav-main{height:44px;}
    .nav-toggle{display:grid;}
  }
  @media (max-width:640px){
    body{padding-top:88px;}
    .nav-bar{height:48px;}
    .nav-main{height:40px;}
    .brand-mark{width:32px;height:32px;font-size:13px;border-radius:10px;}
    .brand-name{font-size:15px;}
    .brand-sub{font-size:10px;letter-spacing:1.5px;}
    .nav-actions .btn-primary{display:none;}
    .search-box.open{width:150px;}
    .article-shell{padding:40px 0 56px;}
    .article-body{font-size:16px;line-height:1.85;}
    .article-body p{margin-bottom:18px;}
    .card-body{padding:16px;}
  }
  @media (max-width:420px){
    .nav-search{display:none;}
  }

/* roulang page: category3 */
:root{
  --bg-deep:#060B16;
  --bg-panel:#0A1224;
  --bg-elev:#101A31;
  --brand:#2BB6F0;
  --brand-2:#2FE0C8;
  --accent:#FFB454;
  --line:rgba(255,255,255,.10);
  --line-strong:rgba(255,255,255,.18);
  --text-hi:#EAF2FF;
  --text-mid:#A8B6CC;
  --text-low:#6E7E96;
  --radius-s:10px;
  --radius-m:16px;
  --radius-l:20px;
  --radius-pill:999px;
  --ease:cubic-bezier(.22,.61,.36,1);
  --shadow:0 22px 48px -24px rgba(0,0,0,.72);
  --glow:0 0 28px rgba(43,182,240,.40);
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  padding-top:112px;
  background:var(--bg-deep);
  color:var(--text-mid);
  font-family:system-ui,-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16.5px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  background:
    radial-gradient(900px 520px at 78% -6%,rgba(43,182,240,.14),transparent 62%),
    radial-gradient(720px 460px at 8% 8%,rgba(47,224,200,.09),transparent 60%);
  z-index:0;
}
img{max-width:100%;display:block;border-style:none}
a{color:var(--brand);text-decoration:none;transition:color .24s var(--ease),opacity .24s var(--ease)}
a:hover{color:var(--brand-2)}
button,input,textarea,select{font:inherit;color:inherit}
h1,h2,h3,h4{margin:0;color:var(--text-hi);font-weight:700;letter-spacing:-.3px}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--brand-2);outline-offset:2px;border-radius:6px}
.container{width:100%;max-width:1240px;margin:0 auto;padding-left:20px;padding-right:20px;position:relative;z-index:1}

/* ---------- 双层导航 ---------- */
.site-header{
  position:fixed;
  top:0;left:0;right:0;
  z-index:80;
  background:rgba(6,11,22,.82);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  border-bottom:1px solid var(--line);
  transition:background-color .24s var(--ease),box-shadow .24s var(--ease);
}
.site-header.scrolled{background:rgba(6,11,22,.94);box-shadow:0 14px 34px -22px rgba(0,0,0,.9)}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:20px;height:64px;transition:height .24s var(--ease)}
.site-header.scrolled .header-inner{height:56px}
.brand{display:inline-flex;align-items:center;gap:10px;text-decoration:none;color:var(--text-hi)}
.brand-mark{
  width:40px;height:40px;flex:0 0 40px;border-radius:12px;display:grid;place-items:center;
  background:linear-gradient(135deg,var(--brand),var(--brand-2));
  color:#04121C;font-weight:700;font-size:13px;letter-spacing:.04em;
  box-shadow:var(--glow);
}
.brand-text{display:flex;flex-direction:column;line-height:1.12}
.brand-name{font-size:17px;font-weight:700;color:var(--text-hi)}
.brand-sub{font-size:11px;letter-spacing:.16em;color:var(--text-low)}
.header-right{display:flex;align-items:center;gap:12px}
.search-box{display:flex;align-items:center;position:relative}
.search-box input{
  width:0;opacity:0;padding:10px 0;border:1px solid transparent;border-radius:var(--radius-pill);
  background:rgba(255,255,255,.05);color:var(--text-hi);font-size:14px;
  transition:width .26s var(--ease),opacity .26s var(--ease),padding .26s var(--ease),border-color .24s var(--ease);
}
.search-box.open input{width:210px;opacity:1;padding:10px 16px;border-color:var(--line-strong)}
.search-box input:focus{outline:none;border-color:var(--brand);box-shadow:var(--glow)}
.search-toggle{
  width:40px;height:40px;border-radius:var(--radius-pill);border:1px solid var(--line);
  background:rgba(255,255,255,.04);color:var(--text-mid);cursor:pointer;
  display:grid;place-items:center;transition:all .24s var(--ease);
}
.search-toggle:hover{color:var(--text-hi);border-color:var(--line-strong);background:rgba(255,255,255,.07)}
.tabs-wrap{border-top:1px solid rgba(255,255,255,.06)}
.tabs-scroll{display:flex;overflow-x:auto;scrollbar-width:none;-ms-overflow-style:none}
.tabs-scroll::-webkit-scrollbar{display:none}
.nav-main{display:flex;align-items:center;gap:6px;height:48px;flex-wrap:nowrap}
.nav-main a{
  position:relative;display:inline-flex;align-items:center;padding:8px 15px;border-radius:var(--radius-pill);
  font-size:14.5px;font-weight:500;color:var(--text-mid);white-space:nowrap;text-decoration:none;
  border:1px solid transparent;transition:all .24s var(--ease);
}
.nav-main a:hover{color:var(--text-hi);background:rgba(255,255,255,.06)}
.nav-main a.active{color:var(--brand);background:rgba(43,182,240,.10);border-color:rgba(43,182,240,.28)}
.nav-main a.active::after{
  content:"";position:absolute;left:50%;bottom:-3px;transform:translateX(-50%);
  width:26px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--brand),var(--brand-2));
  box-shadow:0 0 10px rgba(47,224,200,.65);
}
.menu-toggle{
  display:none;width:40px;height:40px;border-radius:var(--radius-pill);
  border:1px solid var(--line);background:rgba(255,255,255,.04);color:var(--text-hi);
  cursor:pointer;align-items:center;justify-content:center;transition:all .24s var(--ease);
}
.menu-toggle:hover{border-color:var(--line-strong);background:rgba(255,255,255,.08)}
.mobile-drawer{
  display:none;border-top:1px solid var(--line);background:rgba(8,14,28,.97);
  backdrop-filter:blur(16px);padding:14px 20px 20px;
}
.mobile-drawer.open{display:block}
.mobile-drawer a{
  display:block;padding:12px 14px;border-radius:var(--radius-m);color:var(--text-mid);
  font-size:15px;text-decoration:none;border:1px solid transparent;
}
.mobile-drawer a:hover{background:rgba(255,255,255,.06);color:var(--text-hi)}
.mobile-drawer a.active{color:var(--brand);border-color:rgba(43,182,240,.3);background:rgba(43,182,240,.1)}
.mobile-drawer .drawer-cta{margin-top:12px;display:inline-flex}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 22px;border-radius:var(--radius-pill);font-size:15.5px;font-weight:600;
  border:1px solid transparent;cursor:pointer;text-decoration:none;
  transition:all .24s var(--ease);
}
.btn-primary{
  background:linear-gradient(135deg,var(--brand),var(--brand-2));
  color:#04121C;
}
.btn-primary:hover{color:#04121C;filter:brightness(1.08);box-shadow:0 0 24px rgba(43,182,240,.45)}
.btn-primary:active{transform:translateY(1px)}
.btn-ghost{
  background:transparent;border-color:rgba(255,255,255,.22);color:var(--text-hi);
}
.btn-ghost:hover{border-color:var(--brand);background:rgba(255,255,255,.06);color:var(--text-hi)}
.btn-sm{padding:9px 18px;font-size:14.5px}
.link-arrow{font-weight:600;text-decoration:underline;text-underline-offset:3px}

/* ---------- 通用玻璃卡 ---------- */
.glass{
  background:rgba(255,255,255,.045);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  border:1px solid var(--line);
  border-radius:var(--radius-l);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.06),var(--shadow);
}

/* ---------- Banner ---------- */
.page-banner{
  position:relative;
  padding:74px 0 66px;
  background-image:linear-gradient(180deg,rgba(6,11,22,.66),rgba(6,11,22,.94)),url("/assets/images/backpic/back-2.webp");
  background-size:cover;
  background-position:center;
  border-bottom:1px solid var(--line);
  overflow:hidden;
}
.page-banner::after{
  content:"";position:absolute;left:-10%;top:0;width:120%;height:1px;
  background:linear-gradient(90deg,transparent,rgba(47,224,200,.30),transparent);
  opacity:.5;
}
.banner-rail{
  position:absolute;inset:auto -6% -40% 44%;height:320px;
  background:linear-gradient(115deg,transparent 46%,rgba(47,224,200,.055) 47%,transparent 49%);
  pointer-events:none;opacity:.8;
}
.breadcrumb{display:flex;flex-wrap:wrap;gap:8px;font-size:13.5px;color:var(--text-low);margin-bottom:18px}
.breadcrumb a{color:var(--text-mid)}
.breadcrumb a:hover{color:var(--brand-2)}
.breadcrumb .sep{color:var(--text-low);opacity:.6}
.banner-inner{display:grid;grid-template-columns:1.35fr .85fr;gap:44px;align-items:center}
.banner-tag{
  display:inline-flex;align-items:center;gap:8px;padding:6px 14px;border-radius:var(--radius-pill);
  background:rgba(43,182,240,.10);border:1px solid rgba(43,182,240,.28);
  color:var(--brand);font-size:12.5px;font-weight:600;letter-spacing:.02em;margin-bottom:18px;
}
.page-banner h1{font-size:clamp(30px,4.4vw,48px);line-height:1.2;letter-spacing:-.5px;margin-bottom:18px}
.banner-lead{font-size:16.5px;line-height:1.9;color:var(--text-mid);max-width:660px}
.badge-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px}
.badge{
  display:inline-flex;align-items:center;gap:8px;padding:8px 15px;border-radius:var(--radius-pill);
  background:rgba(255,255,255,.05);border:1px solid var(--line);
  font-size:13.5px;color:var(--text-mid);
}
.badge i{color:var(--brand-2);font-size:12.5px}
.banner-card{padding:26px}
.banner-card h2{font-size:17px;margin-bottom:14px;color:var(--text-hi)}
.banner-card ul{display:grid;gap:12px}
.banner-card li{display:flex;gap:10px;font-size:14.5px;color:var(--text-mid);line-height:1.7}
.banner-card li i{color:var(--accent);margin-top:5px;font-size:12px}
.banner-card .mini{margin-top:18px;padding-top:16px;border-top:1px solid var(--line);font-size:13px;color:var(--text-low)}

/* ---------- 板块 ---------- */
.section{padding:92px 0}
.section.tight{padding:72px 0}
.section-head{max-width:760px;margin-bottom:44px}
.section-kicker{
  display:inline-flex;align-items:center;gap:8px;font-size:12.5px;letter-spacing:.14em;
  color:var(--brand);text-transform:uppercase;font-weight:600;margin-bottom:14px;
}
.section-kicker::before{content:"";width:22px;height:2px;border-radius:2px;background:linear-gradient(90deg,var(--brand),var(--brand-2))}
.section h2{font-size:clamp(24px,3vw,34px);line-height:1.28;margin-bottom:16px}
.section-head p{font-size:16px;color:var(--text-mid);line-height:1.9}
.divider-rail{height:1px;background:linear-gradient(90deg,transparent,rgba(47,224,200,.22),rgba(43,182,240,.18),transparent);margin:0;border:0}

/* ---------- 时间线 ---------- */
.timeline{display:grid;gap:8px;margin-top:8px}
.tl-item{display:grid;grid-template-columns:68px 1fr;gap:22px;position:relative}
.tl-rail{position:relative;display:flex;justify-content:center}
.tl-rail::before{
  content:"";position:absolute;top:52px;bottom:-8px;left:50%;width:1px;transform:translateX(-50%);
  background:linear-gradient(180deg,rgba(43,182,240,.55),rgba(43,182,240,.05));
}
.tl-item:last-child .tl-rail::before{display:none}
.tl-dot{
  position:relative;z-index:1;width:48px;height:48px;border-radius:50%;
  display:grid;place-items:center;font-size:14px;font-weight:700;
  font-variant-numeric:tabular-nums;color:var(--brand);
  background:rgba(43,182,240,.12);border:1px solid rgba(43,182,240,.36);
  backdrop-filter:blur(10px);box-shadow:0 0 22px -6px rgba(43,182,240,.55);
}
.tl-body{padding:24px 26px;margin-bottom:24px;transition:all .24s var(--ease)}
.tl-body:hover{border-color:var(--line-strong);transform:translateY(-2px)}
.tl-body h3{font-size:19px;margin-bottom:10px;display:flex;align-items:center;gap:10px}
.tl-body h3 .stepof{font-size:12px;font-weight:600;color:var(--accent);letter-spacing:.06em}
.tl-body p{font-size:15.5px;line-height:1.88;color:var(--text-mid)}
.tl-meta{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px}
.chip{
  display:inline-flex;align-items:center;gap:6px;padding:5px 12px;border-radius:var(--radius-pill);
  font-size:12.5px;color:var(--text-low);background:rgba(255,255,255,.04);border:1px solid var(--line);
}
.chip.on{color:var(--brand-2);border-color:rgba(47,224,200,.28);background:rgba(47,224,200,.07)}

/* ---------- 图文双栏 ---------- */
.split{display:grid;grid-template-columns:1fr 1fr;gap:44px;align-items:center}
.figure-card{
  position:relative;border-radius:var(--radius-l);overflow:hidden;
  border:1px solid var(--line);box-shadow:var(--shadow);background:var(--bg-elev);
}
.figure-card img{width:100%;height:100%;object-fit:cover;aspect-ratio:16/10;transition:transform .26s var(--ease)}
.figure-card:hover img{transform:scale(1.03)}
.figure-card figcaption{
  position:absolute;left:0;right:0;bottom:0;padding:14px 18px;font-size:12.5px;color:var(--text-mid);
  background:linear-gradient(180deg,transparent,rgba(4,8,17,.88));
}
.check-list{display:grid;gap:14px;margin-top:22px}
.check-list li{display:flex;gap:12px;font-size:15.5px;color:var(--text-mid);line-height:1.8}
.check-list li i{color:var(--brand-2);margin-top:6px;font-size:13px}

/* ---------- 表格 ---------- */
.table-wrap{
  margin-top:30px;border:1px solid var(--line);border-radius:var(--radius-l);
  background:rgba(255,255,255,.03);overflow-x:auto;
}
table{width:100%;border-collapse:collapse;min-width:700px}
th,td{padding:15px 20px;text-align:left;font-size:15px;border-bottom:1px solid var(--line);vertical-align:top}
th{font-size:13.5px;font-weight:600;color:var(--text-hi);background:rgba(255,255,255,.035);letter-spacing:.02em}
td{color:var(--text-mid)}
tbody tr:nth-child(even){background:rgba(255,255,255,.018)}
tbody tr:last-child td{border-bottom:none}
td strong{color:var(--text-hi);font-weight:600}
.num{font-variant-numeric:tabular-nums;color:var(--accent);font-weight:600}

/* ---------- 卡片网格 ---------- */
.card-grid{display:grid;gap:24px;grid-template-columns:repeat(3,1fr)}
.info-card{padding:26px;transition:all .24s var(--ease);display:flex;flex-direction:column}
.info-card:hover{border-color:var(--line-strong);transform:translateY(-2px);box-shadow:0 26px 52px -26px rgba(0,0,0,.85)}
.info-card .icon-box{
  width:44px;height:44px;border-radius:13px;display:grid;place-items:center;margin-bottom:18px;
  background:rgba(43,182,240,.12);border:1px solid rgba(43,182,240,.26);color:var(--brand-2);font-size:17px;
}
.info-card h3{font-size:18px;margin-bottom:10px}
.info-card p{font-size:15px;line-height:1.85;color:var(--text-mid)}
.info-card .card-foot{margin-top:18px;padding-top:14px;border-top:1px solid var(--line);font-size:13px;color:var(--text-low)}

/* ---------- 数据条 ---------- */
.metric-strip{
  display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin-top:34px;
  padding:26px;border-radius:var(--radius-l);border:1px solid var(--line);
  background:rgba(255,255,255,.03);
}
.metric{display:flex;flex-direction:column;gap:6px}
.metric .val{font-size:clamp(24px,3vw,32px);font-weight:700;color:var(--accent);font-variant-numeric:tabular-nums;letter-spacing:-.5px}
.metric .lbl{font-size:13.5px;color:var(--text-low)}
.metric-note{margin-top:14px;font-size:12.5px;color:var(--text-low)}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:860px;margin:0 auto;display:grid;gap:14px}
.faq-item{padding:4px 22px;transition:all .24s var(--ease)}
.faq-item:hover{border-color:var(--line-strong)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:18px 0;background:none;border:0;cursor:pointer;text-align:left;
  font-size:16.5px;font-weight:600;color:var(--text-hi);
}
.faq-q i{color:var(--brand);transition:transform .26s var(--ease);flex:0 0 auto;font-size:14px}
.faq-item.open .faq-q i{transform:rotate(45deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .28s var(--ease),padding .28s var(--ease);}
.faq-item.open .faq-a{max-height:460px;padding-bottom:20px}
.faq-a p{font-size:15.5px;line-height:1.85;color:var(--text-mid)}

/* ---------- CTA ---------- */
.cta-panel{
  position:relative;overflow:hidden;border-radius:var(--radius-l);padding:52px;
  background-image:linear-gradient(135deg,rgba(10,18,36,.90),rgba(6,11,22,.96)),url("/assets/images/backpic/back-3.webp");
  background-size:cover;background-position:center;
  border:1px solid var(--line-strong);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.06),var(--shadow);
}
.cta-inner{display:grid;grid-template-columns:1.15fr .85fr;gap:44px;align-items:center}
.cta-panel h2{font-size:clamp(24px,3vw,34px);margin-bottom:14px}
.cta-panel p{font-size:16px;color:var(--text-mid);line-height:1.9}
.cta-actions{display:flex;flex-wrap:wrap;gap:16px;align-items:center;margin-top:26px}
.cta-form{display:grid;gap:12px;padding:26px}
.cta-form label{font-size:13px;color:var(--text-mid)}
.cta-form input,.cta-form textarea{
  width:100%;padding:12px 16px;border-radius:var(--radius-m);
  background:rgba(255,255,255,.05);border:1px solid var(--line);color:var(--text-hi);
  font-size:15px;transition:all .24s var(--ease);
}
.cta-form textarea{resize:vertical;min-height:88px;line-height:1.7}
.cta-form input::placeholder,.cta-form textarea::placeholder{color:var(--text-low)}
.cta-form input:focus,.cta-form textarea:focus{outline:none;border-color:var(--brand);box-shadow:var(--glow)}
.form-note{font-size:13.5px;color:var(--brand-2);min-height:20px}

/* ---------- 页脚 ---------- */
.site-footer{background:#040811;border-top:1px solid var(--line);padding:64px 0 28px;margin-top:8px;position:relative;z-index:1}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px}
.footer-desc{margin-top:18px;font-size:14.5px;line-height:1.85;color:var(--text-low);max-width:340px}
.footer-title{font-size:14px;font-weight:600;color:var(--text-hi);margin-bottom:16px;letter-spacing:.02em}
.footer-links{display:grid;gap:11px}
.footer-links a,.footer-links span{font-size:14.5px;color:var(--text-mid)}
.footer-links a:hover{color:var(--brand-2)}
.footer-links .low{color:var(--text-low);font-size:13.5px}
.footer-bottom{
  margin-top:44px;padding-top:22px;border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:13px;color:var(--text-low);
}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .banner-inner{gap:34px}
}
@media (max-width:1023px){
  body{padding-top:104px}
  .section{padding:74px 0}
  .banner-inner{grid-template-columns:1fr;gap:32px}
  .split{grid-template-columns:1fr;gap:32px}
  .card-grid{grid-template-columns:repeat(2,1fr)}
  .metric-strip{grid-template-columns:repeat(2,1fr)}
  .cta-inner{grid-template-columns:1fr;gap:30px}
  .cta-panel{padding:40px 32px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:767px){
  body{font-size:16px;padding-top:92px}
  .search-box.open input{width:140px}
  .nav-main a{padding:8px 12px;font-size:14px}
  .tl-item{grid-template-columns:48px 1fr;gap:14px}
  .tl-dot{width:40px;height:40px;font-size:13px}
  .tl-body{padding:20px}
  .page-banner{padding:52px 0 48px}
  .section{padding:58px 0}
  .footer-grid{grid-template-columns:1fr;gap:30px}
  .metric-strip{padding:20px}
}
@media (max-width:639px){
  .container{padding-left:18px;padding-right:18px}
  .header-right .btn{display:none}
  .menu-toggle{display:inline-flex}
  .tabs-wrap{display:none}
  body{padding-top:68px}
  .card-grid{grid-template-columns:1fr}
  .metric-strip{grid-template-columns:1fr 1fr;gap:16px}
  .cta-panel{padding:32px 22px}
  .cta-form{padding:20px}
  .banner-card{padding:20px}
  .faq-item{padding:4px 18px}
  .faq-q{font-size:15.5px}
  .cta-actions .btn{width:100%}
}

/* roulang page: category2 */
:root{
  --bg-deep:#060B16;
  --bg-panel:#0A1224;
  --bg-elev:#101A31;
  --brand:#2BB6F0;
  --brand-2:#2FE0C8;
  --accent:#FFB454;
  --line:rgba(255,255,255,.10);
  --line-strong:rgba(255,255,255,.18);
  --text-hi:#EAF2FF;
  --text-mid:#A8B6CC;
  --text-low:#6E7E96;
  --radius-s:10px;
  --radius-m:16px;
  --radius-l:20px;
  --radius-pill:999px;
  --ease:cubic-bezier(.22,.61,.36,1);
  --shadow-card:0 22px 48px -24px rgba(0,0,0,.72);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  padding-top:112px;
  background-color:var(--bg-deep);
  background-image:
    radial-gradient(1100px 560px at 84% -8%, rgba(43,182,240,.10), transparent 62%),
    radial-gradient(880px 480px at -8% 18%, rgba(47,224,200,.06), transparent 62%);
  background-repeat:no-repeat;
  color:var(--text-hi);
  font-family:system-ui,-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.85;
  letter-spacing:.1px;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button,input,textarea{font-family:inherit;font-size:inherit;color:inherit}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.3;color:var(--text-hi)}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--brand-2);outline-offset:2px;border-radius:6px}
.container{width:100%;max-width:1240px;margin:0 auto;padding:0 20px}
@media (min-width:768px){.container{padding:0 24px}}
@media (min-width:1024px){.container{padding:0 32px}}

/* ---------- header ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:60;
  background:rgba(6,11,22,.80);
  -webkit-backdrop-filter:blur(16px) saturate(150%);
  backdrop-filter:blur(16px) saturate(150%);
  border-bottom:1px solid var(--line);
  transition:background .24s var(--ease),box-shadow .24s var(--ease);
}
.site-header.scrolled{background:rgba(6,11,22,.94);box-shadow:0 14px 32px -22px rgba(0,0,0,.92)}
.nav-top{display:flex;align-items:center;justify-content:space-between;gap:18px;height:64px;transition:height .24s var(--ease)}
.site-header.scrolled .nav-top{height:58px}
.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto}
.brand-mark{
  width:36px;height:36px;border-radius:12px;
  background:linear-gradient(135deg,var(--brand),var(--brand-2));
  display:grid;place-items:center;color:#04121C;font-size:12.5px;font-weight:700;letter-spacing:.5px;
  box-shadow:0 0 20px rgba(43,182,240,.32);
}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-name{font-size:15.5px;font-weight:700;color:var(--text-hi);letter-spacing:.4px}
.brand-sub{font-size:11px;letter-spacing:2.4px;color:var(--brand-2)}
.nav-actions{display:flex;align-items:center;gap:10px}
.nav-search{display:none;align-items:center;gap:6px}
.nav-search.open{display:flex}
.nav-search input{
  width:200px;padding:9px 14px;border-radius:var(--radius-pill);
  background:rgba(255,255,255,.05);border:1px solid var(--line);color:var(--text-hi);
  font-size:14px;transition:border-color .22s var(--ease),box-shadow .22s var(--ease);
}
.nav-search input::placeholder{color:var(--text-low)}
.nav-search input:focus{border-color:var(--brand);box-shadow:0 0 0 4px rgba(43,182,240,.14);outline:none}
.icon-btn{
  width:40px;height:40px;border-radius:50%;display:grid;place-items:center;
  background:rgba(255,255,255,.045);border:1px solid var(--line);color:var(--text-mid);
  cursor:pointer;transition:all .22s var(--ease);
}
.icon-btn:hover{color:var(--text-hi);border-color:var(--line-strong);background:rgba(255,255,255,.08)}
.icon-btn svg{width:18px;height:18px}
.menu-toggle{display:grid}
.nav-tabs-wrap{border-top:1px solid var(--line)}
.nav-main{
  display:flex;align-items:center;gap:6px;height:48px;overflow-x:auto;
  scrollbar-width:none;-ms-overflow-style:none;
  -webkit-mask-image:linear-gradient(90deg,transparent 0,#000 16px,#000 calc(100% - 16px),transparent 100%);
  mask-image:linear-gradient(90deg,transparent 0,#000 16px,#000 calc(100% - 16px),transparent 100%);
}
.nav-main::-webkit-scrollbar{display:none}
.nav-main a{
  position:relative;flex:0 0 auto;padding:8px 14px;border-radius:var(--radius-pill);
  font-size:14.5px;font-weight:500;color:var(--text-mid);white-space:nowrap;
  transition:color .22s var(--ease),background .22s var(--ease);
}
.nav-main a:hover{color:var(--text-hi);background:rgba(255,255,255,.06)}
.nav-main a.active{color:var(--brand);background:rgba(43,182,240,.10);box-shadow:inset 0 1px 0 rgba(255,255,255,.07)}
.nav-main a.active::after{
  content:"";position:absolute;left:50%;transform:translateX(-50%);bottom:2px;
  width:22px;height:2px;border-radius:2px;
  background:linear-gradient(135deg,var(--brand),var(--brand-2));
  box-shadow:0 0 12px rgba(43,182,240,.65);
}
.mobile-drawer{
  position:fixed;inset:0;z-index:70;display:none;flex-direction:column;gap:6px;
  padding:22px 20px 40px;background:rgba(6,11,22,.97);
  -webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px);
}
.mobile-drawer.open{display:flex}
.mobile-drawer .drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:14px}
.mobile-drawer a{
  padding:13px 16px;border-radius:var(--radius-m);color:var(--text-mid);
  font-size:15.5px;border:1px solid transparent;
  transition:all .22s var(--ease);
}
.mobile-drawer a:hover,.mobile-drawer a.active{
  color:var(--brand);background:rgba(43,182,240,.09);border-color:rgba(43,182,240,.22);
}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 22px;border-radius:var(--radius-pill);border:1px solid transparent;
  font-size:15px;font-weight:600;cursor:pointer;
  transition:all .24s var(--ease);
}
.btn-primary{background:linear-gradient(135deg,var(--brand),var(--brand-2));color:#04121C}
.btn-primary:hover{filter:brightness(1.08);box-shadow:0 0 24px rgba(43,182,240,.45)}
.btn-primary:active{transform:translateY(1px)}
.btn-ghost{background:transparent;border-color:rgba(255,255,255,.22);color:var(--text-hi)}
.btn-ghost:hover{background:rgba(255,255,255,.06);border-color:var(--brand)}
.btn-ghost:active{transform:translateY(1px)}
.link-more{color:var(--brand);text-decoration:underline;text-underline-offset:3px;transition:color .22s var(--ease)}
.link-more:hover{color:var(--brand-2)}
.btn-sm{padding:9px 16px;font-size:14px}

/* ---------- banner ---------- */
.page-banner{
  position:relative;overflow:hidden;
  padding:72px 0 68px;
  background-color:var(--bg-panel);
  background-image:url('/assets/images/backpic/back-1.webp');
  background-size:cover;background-position:center;
  border-bottom:1px solid var(--line);
}
.page-banner::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(135deg,rgba(6,11,22,.92) 0%,rgba(6,11,22,.78) 52%,rgba(10,18,36,.86) 100%);
}
.page-banner::after{
  content:"";position:absolute;top:-46%;right:-12%;width:680px;height:680px;pointer-events:none;
  background:radial-gradient(closest-side,rgba(47,224,200,.10),transparent 72%);
}
.banner-inner{position:relative;z-index:2;max-width:880px}
.crumbs{display:flex;align-items:center;gap:8px;font-size:13.5px;color:var(--text-low);margin-bottom:18px;flex-wrap:wrap}
.crumbs a{color:var(--text-mid);transition:color .22s var(--ease)}
.crumbs a:hover{color:var(--brand-2)}
.crumbs span.sep{color:var(--text-low)}
.page-banner h1{
  font-size:clamp(30px,4.2vw,46px);line-height:1.18;letter-spacing:-.5px;margin-bottom:18px;
}
.page-banner h1 em{font-style:normal;color:var(--brand-2)}
.banner-lead{color:var(--text-mid);font-size:16.5px;line-height:1.95;max-width:800px}
.badge-row{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}
.micro-badge{
  display:inline-flex;align-items:center;gap:9px;padding:9px 17px;
  border-radius:var(--radius-pill);border:1px solid var(--line);
  background:rgba(255,255,255,.045);
  -webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);
  font-size:13.5px;color:var(--text-mid);
}
.micro-badge i{width:6px;height:6px;border-radius:50%;background:var(--brand-2);box-shadow:0 0 10px rgba(47,224,200,.85)}
.banner-cta{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}

/* ---------- sections ---------- */
.section{padding:92px 0}
.section-tight{padding:76px 0}
.section-head{margin-bottom:38px;max-width:760px}
.section-head .eyebrow{
  display:inline-block;font-size:13px;letter-spacing:2px;color:var(--brand-2);
  text-transform:uppercase;margin-bottom:12px;
}
.section-head h2{font-size:clamp(24px,3vw,34px);letter-spacing:-.2px;margin-bottom:14px}
.section-head p{color:var(--text-mid);font-size:16px}
.section-head-row{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;flex-wrap:wrap}
.rail-divider{
  height:1px;border:0;margin:0;
  background:linear-gradient(90deg,transparent,rgba(43,182,240,.42),rgba(47,224,200,.32),transparent);
  opacity:.08;
}

/* ---------- cards ---------- */
.glass-card{
  background:rgba(255,255,255,.045);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  backdrop-filter:blur(14px) saturate(140%);
  border:1px solid var(--line);
  border-radius:var(--radius-l);
  box-shadow:var(--shadow-card),inset 0 1px 0 rgba(255,255,255,.06);
  transition:border-color .24s var(--ease),transform .24s var(--ease),box-shadow .24s var(--ease);
}
.card-hover:hover{
  transform:translateY(-2px);border-color:var(--line-strong);
  box-shadow:0 28px 56px -26px rgba(0,0,0,.86),inset 0 1px 0 rgba(255,255,255,.08);
}
.wall{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;align-items:start}
.wall-col{display:flex;flex-direction:column;gap:24px}
.data-card{padding:24px}
.data-card .card-icon{
  width:42px;height:42px;border-radius:13px;display:grid;place-items:center;margin-bottom:16px;
  background:rgba(43,182,240,.12);border:1px solid rgba(43,182,240,.22);color:var(--brand);
}
.data-card .card-icon svg{width:20px;height:20px}
.data-card h3{font-size:19px;font-weight:600;margin-bottom:10px}
.data-card p{color:var(--text-mid);font-size:15px;line-height:1.85}
.card-figure{
  position:relative;overflow:hidden;border-radius:14px;margin-bottom:18px;
  aspect-ratio:16/9;background:var(--bg-elev);
}
.card-figure img{width:100%;height:100%;object-fit:cover;transition:transform .24s var(--ease)}
.card-hover:hover .card-figure img{transform:scale(1.03)}
.card-figure::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(6,11,22,.05),rgba(6,11,22,.55))}
.pill-tag{
  display:inline-block;font-size:12.5px;padding:4px 12px;border-radius:var(--radius-pill);
  background:rgba(43,182,240,.10);border:1px solid rgba(43,182,240,.25);color:var(--brand);
}
.card-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px}
.card-tags span{
  font-size:12.5px;padding:4px 11px;border-radius:var(--radius-pill);
  border:1px solid var(--line);color:var(--text-low);
}

/* ---------- metrics ---------- */
.metrics-band{
  background:linear-gradient(180deg,rgba(16,26,49,.55),rgba(6,11,22,.15));
  border-top:1px solid var(--line);border-bottom:1px solid var(--line);
}
.metrics{display:grid;grid-template-columns:repeat(4,1fr);gap:26px;margin-top:34px}
.metric-item .metric-num{
  font-size:clamp(30px,3.4vw,44px);font-weight:700;color:var(--accent);
  font-variant-numeric:tabular-nums;line-height:1.1;letter-spacing:-.5px;
}
.metric-item .metric-label{font-size:14.5px;color:var(--text-mid);margin-top:8px}
.metric-note{margin-top:26px;font-size:13px;color:var(--text-low)}

/* ---------- checklist / split ---------- */
.split{display:grid;grid-template-columns:1.05fr .95fr;gap:34px;align-items:center}
.check-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px;margin-top:26px}
.check-list li{
  display:flex;align-items:flex-start;gap:10px;padding:13px 16px;
  border-radius:var(--radius-m);border:1px solid var(--line);
  background:rgba(255,255,255,.03);font-size:14.5px;color:var(--text-mid);
  transition:border-color .24s var(--ease),color .24s var(--ease),background .24s var(--ease);
}
.check-list li:hover{border-color:var(--line-strong);color:var(--text-hi);background:rgba(255,255,255,.055)}
.check-list li::before{
  content:"";flex:0 0 auto;width:8px;height:8px;margin-top:8px;border-radius:50%;
  background:linear-gradient(135deg,var(--brand),var(--brand-2));
  box-shadow:0 0 10px rgba(43,182,240,.55);
}
.media-figure{
  position:relative;border-radius:var(--radius-l);overflow:hidden;border:1px solid var(--line);
  background:var(--bg-elev);box-shadow:var(--shadow-card);
}
.media-figure img{width:100%;height:100%;object-fit:cover;aspect-ratio:4/3}
.media-figure figcaption{
  position:absolute;left:0;right:0;bottom:0;padding:16px 20px;
  font-size:13.5px;color:var(--text-mid);
  background:linear-gradient(180deg,transparent,rgba(6,11,22,.88));
}

/* ---------- capability rows ---------- */
.cap-list{display:flex;flex-direction:column;gap:14px;margin-top:30px}
.cap-row{
  position:relative;display:flex;align-items:center;gap:18px;padding:20px 24px;
  border-radius:var(--radius-m);border:1px solid var(--line);
  background:rgba(255,255,255,.035);
  transition:all .24s var(--ease);overflow:hidden;
}
.cap-row::before{
  content:"";position:absolute;left:0;top:12%;bottom:12%;width:3px;border-radius:3px;
  background:linear-gradient(180deg,var(--brand),var(--brand-2));
  opacity:0;transition:opacity .24s var(--ease);
}
.cap-row:hover{border-color:var(--line-strong);background:rgba(255,255,255,.06);transform:translateY(-2px)}
.cap-row:hover::before{opacity:1}
.cap-row .cap-icon{
  flex:0 0 auto;width:42px;height:42px;border-radius:13px;display:grid;place-items:center;
  background:rgba(47,224,200,.10);border:1px solid rgba(47,224,200,.22);color:var(--brand-2);
}
.cap-row .cap-icon svg{width:20px;height:20px}
.cap-row .cap-body h3{font-size:17px;font-weight:600;margin-bottom:6px}
.cap-row .cap-body p{font-size:14.5px;color:var(--text-mid)}
.cap-row .cap-arrow{margin-left:auto;color:var(--text-low);flex:0 0 auto;transition:color .24s var(--ease),transform .24s var(--ease)}
.cap-row:hover .cap-arrow{color:var(--brand-2);transform:translateX(3px)}
.cap-row .cap-arrow svg{width:18px;height:18px}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:860px}
.faq-item{
  border:1px solid var(--line);border-radius:var(--radius-m);margin-bottom:14px;
  background:rgba(255,255,255,.04);
  -webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);
  overflow:hidden;transition:border-color .24s var(--ease)
}
.faq-item:hover{border-color:var(--line-strong)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:18px 22px;background:transparent;border:0;cursor:pointer;text-align:left;
  font-size:16.5px;font-weight:600;color:var(--text-hi);
}
.faq-q .faq-icon{
  flex:0 0 auto;width:22px;height:22px;position:relative;color:var(--brand);
  transition:transform .24s var(--ease);
}
.faq-q .faq-icon::before,.faq-q .faq-icon::after{
  content:"";position:absolute;left:50%;top:50%;background:currentColor;border-radius:2px;
  transform:translate(-50%,-50%);
}
.faq-q .faq-icon::before{width:14px;height:2px}
.faq-q .faq-icon::after{width:2px;height:14px}
.faq-item.open .faq-icon{transform:rotate(45deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .28s var(--ease)}
.faq-a p{padding:0 22px 20px;color:var(--text-mid);font-size:15.5px;line-height:1.85}

/* ---------- CTA ---------- */
.cta-panel{
  position:relative;overflow:hidden;border-radius:var(--radius-l);
  border:1px solid var(--line);padding:44px;
  background-color:var(--bg-panel);
  background-image:url('/assets/images/backpic/back-2.webp');
  background-size:cover;background-position:center;
  box-shadow:var(--shadow-card);
  display:grid;grid-template-columns:1.05fr .95fr;gap:40px;align-items:center;
}
.cta-panel::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(135deg,rgba(6,11,22,.93),rgba(10,18,36,.86));
}
.cta-panel > *{position:relative;z-index:2}
.cta-copy h2{font-size:clamp(24px,2.8vw,32px);margin-bottom:14px}
.cta-copy p{color:var(--text-mid);font-size:15.5px}
.cta-points{margin-top:22px;display:flex;flex-direction:column;gap:10px}
.cta-points li{display:flex;align-items:center;gap:10px;font-size:14.5px;color:var(--text-mid)}
.cta-points li::before{
  content:"";width:6px;height:6px;border-radius:50%;flex:0 0 auto;
  background:var(--accent);box-shadow:0 0 10px rgba(255,180,84,.6);
}
.cta-form{display:grid;gap:12px;background:rgba(255,255,255,.045);border:1px solid var(--line);border-radius:var(--radius-l);padding:24px;-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px)}
.cta-form label{font-size:13px;color:var(--text-mid)}
.cta-form input,.cta-form textarea{
  width:100%;padding:12px 16px;border-radius:var(--radius-m);
  background:rgba(255,255,255,.05);border:1px solid var(--line);color:var(--text-hi);
  transition:border-color .22s var(--ease),box-shadow .22s var(--ease);resize:vertical;
}
.cta-form input::placeholder,.cta-form textarea::placeholder{color:var(--text-low)}
.cta-form input:focus,.cta-form textarea:focus{border-color:var(--brand);box-shadow:0 0 0 4px rgba(43,182,240,.14);outline:none}
.cta-form .btn-primary{width:100%;margin-top:6px}
.form-note{font-size:13.5px;color:var(--brand-2);min-height:20px}

/* ---------- footer ---------- */
.site-footer{background:#040811;border-top:1px solid var(--line);margin-top:0;padding-top:64px}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:34px;padding-bottom:44px}
.footer-desc{color:var(--text-mid);font-size:14.5px;margin-top:18px;max-width:340px}
.footer-title{font-size:14px;font-weight:600;color:var(--text-hi);margin-bottom:16px}
.footer-links{display:flex;flex-direction:column;gap:11px}
.footer-links a,.footer-links .low{font-size:14.5px;color:var(--text-mid);transition:color .22s var(--ease)}
.footer-links a:hover{color:var(--brand-2)}
.footer-links .low{color:var(--text-low)}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:14px;flex-wrap:wrap;
  border-top:1px solid var(--line);padding:22px 0 28px;font-size:13.5px;color:var(--text-low);
}

/* ---------- responsive ---------- */
@media (max-width:1279px){
  .wall{grid-template-columns:repeat(2,1fr)}
  .wall-col:nth-child(3){grid-column:span 2;flex-direction:row;flex-wrap:wrap}
  .wall-col:nth-child(3) > *{flex:1 1 320px}
}
@media (max-width:1023px){
  .split{grid-template-columns:1fr;gap:28px}
  .cta-panel{grid-template-columns:1fr;padding:34px}
  .metrics{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:767px){
  body{padding-top:98px}
  .nav-top{height:56px}
  .site-header.scrolled .nav-top{height:52px}
  .nav-search.open{display:none}
  .nav-main{height:42px;gap:2px}
  .nav-main a{padding:6px 12px;font-size:14px}
  .section{padding:60px 0}
  .section-tight{padding:52px 0}
  .page-banner{padding:52px 0 48px}
  .banner-lead{font-size:15.5px}
  .wall{grid-template-columns:1fr}
  .wall-col:nth-child(3){grid-column:span 1;flex-direction:column}
  .wall-col:nth-child(3) > *{flex:1 1 auto}
  .check-list{grid-template-columns:1fr}
  .data-card{padding:20px}
  .cta-panel{padding:24px}
  .faq-q{font-size:15.5px;padding:16px 18px}
  .faq-a p{padding:0 18px 18px;font-size:15px}
  .footer-grid{grid-template-columns:1fr;gap:28px}
}
@media (max-width:520px){
  .metrics{grid-template-columns:1fr 1fr;gap:18px}
  .banner-cta .btn{width:100%}
  .micro-badge{font-size:13px;padding:8px 14px}
  .cap-row{padding:16px 18px;gap:14px}
}