/* roulang page: index */
:root{
  --bg-0:#060A11;
  --bg-1:#0B1119;
  --bg-2:#111A26;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.16);
  --line-accent:rgba(31,182,232,.35);
  --t1:#E8EEF6;
  --t2:#9EADBF;
  --t3:#6B7B8E;
  --t-inv:#060A11;
  --brand:#1FB6E8;
  --brand-deep:#0E7FB0;
  --brand-glow:rgba(31,182,232,.35);
  --accent:#F5A524;
  --accent-hi:#FFC24D;
  --accent-deep:#E8890B;
  --accent-glow:rgba(245,165,36,.38);
  --chrome:#C6D3E2;
  --ok:#35D08A;
  --warn:#F5A524;
  --err:#F2555A;
  --r-sm:10px;
  --r-md:14px;
  --r-lg:20px;
  --r-xl:26px;
  --r-pill:999px;
  --sh-1:0 8px 24px rgba(0,0,0,.35);
  --sh-2:0 20px 60px rgba(0,0,0,.5);
  --sh-glow-brand:0 0 0 1px rgba(31,182,232,.3),0 10px 30px rgba(31,182,232,.22);
  --sh-glow-accent:0 0 0 1px rgba(245,165,36,.4),0 12px 34px rgba(245,165,36,.3);
  --ease:cubic-bezier(.2,.7,.3,1);
  --font:-apple-system,BlinkMacSystemFont,"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Microsoft YaHei",sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.85;
  color:var(--t2);
  background:var(--bg-0);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body.no-scroll{overflow:hidden;}
h1,h2,h3,h4,p,figure,ul,ol{margin:0;padding:0;}
ul,ol{list-style:none;}
a{color:inherit;text-decoration:none;transition:color .2s var(--ease);}
img{max-width:100%;display:block;border:0;}
button,input,textarea,select{font:inherit;color:inherit;}
button{background:none;border:0;cursor:pointer;}
:focus-visible{outline:2px solid rgba(31,182,232,.75);outline-offset:3px;border-radius:6px;}
.container{width:100%;max-width:1240px;margin:0 auto;padding:0 24px;}
.section{padding:96px 0;position:relative;}
.section--alt{background:var(--bg-1);}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:44px;flex-wrap:wrap;}
.section-head h2{font-size:clamp(26px,3vw,38px);line-height:1.25;font-weight:700;color:var(--t1);letter-spacing:-.3px;}
.section-head .head-note{font-size:13px;color:var(--t3);line-height:1.6;max-width:420px;}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:12px;letter-spacing:.5px;color:var(--accent-hi);padding:5px 12px;border-radius:var(--r-pill);border:1px solid rgba(245,165,36,.45);background:rgba(245,165,36,.1);}
.eyebrow .dot{width:6px;height:6px;border-radius:50%;background:var(--accent-hi);box-shadow:0 0 10px var(--accent-glow);}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:44px;padding:0 26px;border-radius:var(--r-pill);font-size:15px;font-weight:600;letter-spacing:.2px;transition:transform .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease),border-color .2s var(--ease),color .2s var(--ease);white-space:nowrap;}
.btn:active{transform:translateY(1px);}
.btn-primary{background:linear-gradient(135deg,var(--accent-hi) 0%,var(--accent-deep) 100%);color:var(--t-inv);box-shadow:var(--sh-glow-accent);}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 0 0 1px rgba(245,165,36,.55),0 16px 40px rgba(245,165,36,.42);background:linear-gradient(135deg,#FFD06B 0%,#F09512 100%);}
.btn-ghost-line{background:rgba(255,255,255,.055);color:var(--t1);border:1px solid var(--line-accent);backdrop-filter:blur(12px);}
.btn-ghost-line:hover{background:rgba(255,255,255,.1);border-color:rgba(31,182,232,.6);transform:translateY(-2px);}
.btn-text{display:inline-flex;align-items:center;gap:8px;color:var(--brand);font-size:15px;font-weight:600;min-height:44px;padding:0 4px;}
.btn-text .arw{transition:transform .2s var(--ease);}
.btn-text:hover .arw{transform:translateX(4px);}
.btn-sm{min-height:38px;padding:0 18px;font-size:14px;}
.tag{display:inline-block;font-size:12px;letter-spacing:.5px;padding:2px 8px;border-radius:6px;color:var(--accent-hi);background:rgba(245,165,36,.12);}

/* ===== Header ===== */
.site-header{position:fixed;top:0;left:0;right:0;z-index:120;background:rgba(6,10,17,.35);backdrop-filter:blur(16px) saturate(140%);-webkit-backdrop-filter:blur(16px) saturate(140%);border-bottom:1px solid var(--line);transition:background .3s var(--ease),box-shadow .3s var(--ease),border-color .3s var(--ease);}
.site-header.is-stuck{background:rgba(6,10,17,.92);box-shadow:var(--sh-1);border-bottom-color:var(--line-strong);}
.nav-inner{display:flex;align-items:center;justify-content:space-between;gap:20px;height:72px;}
.logo{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.logo-mark{width:30px;height:30px;flex-shrink:0;filter:drop-shadow(0 0 8px var(--accent-glow));}
.logo-text{font-size:16px;font-weight:700;color:var(--t1);letter-spacing:.2px;white-space:nowrap;}
.logo-text em{font-style:normal;color:var(--accent-hi);}
.nav-links{display:flex;align-items:center;gap:4px;}
.nav-links a{position:relative;display:inline-block;padding:10px 12px;font-size:15px;color:var(--t2);border-radius:8px;transition:color .2s var(--ease),background .2s var(--ease);}
.nav-links a::after{content:"";position:absolute;left:12px;right:12px;bottom:4px;height:2px;border-radius:2px;background:linear-gradient(90deg,var(--accent-hi),var(--accent-deep));opacity:0;transform:scaleX(.4);transform-origin:left;transition:opacity .2s var(--ease),transform .2s var(--ease);}
.nav-links a:hover{color:var(--t1);background:rgba(255,255,255,.05);}
.nav-links a:hover::after{opacity:.7;transform:scaleX(1);}
.nav-links a[aria-current="page"]{color:var(--t1);}
.nav-links a[aria-current="page"]::after{opacity:1;transform:scaleX(1);}
.nav-right{display:flex;align-items:center;gap:12px;flex-shrink:0;}
.search-box{position:relative;display:flex;align-items:center;height:44px;width:200px;border-radius:var(--r-pill);background:rgba(255,255,255,.05);border:1px solid var(--line);transition:border-color .2s var(--ease),box-shadow .2s var(--ease);}
.search-box svg{position:absolute;left:14px;width:16px;height:16px;stroke:var(--t3);fill:none;stroke-width:2;}
.search-box input{width:100%;height:100%;border:0;background:transparent;padding:0 16px 0 40px;font-size:14px;color:var(--t1);border-radius:var(--r-pill);}
.search-box input::placeholder{color:var(--t3);}
.search-box:focus-within{border-color:var(--line-accent);box-shadow:var(--sh-glow-brand);}
.nav-toggle{display:none;width:44px;height:44px;border-radius:12px;border:1px solid var(--line);background:rgba(255,255,255,.05);align-items:center;justify-content:center;flex-direction:column;gap:5px;}
.nav-toggle span{display:block;width:20px;height:2px;border-radius:2px;background:var(--t1);transition:transform .25s var(--ease),opacity .2s var(--ease);}
.nav-toggle.is-active span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.nav-toggle.is-active span:nth-child(2){opacity:0;}
.nav-toggle.is-active span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}
.mobile-drawer{position:fixed;inset:60px 0 0 0;z-index:110;background:rgba(6,10,17,.96);backdrop-filter:blur(20px);padding:28px 24px 40px;display:none;flex-direction:column;gap:6px;overflow-y:auto;}
.mobile-drawer.is-open{display:flex;}
.mobile-drawer a{display:flex;align-items:center;justify-content:space-between;font-size:18px;color:var(--t1);padding:16px 4px;border-bottom:1px solid var(--line);}
.mobile-drawer a span.arw{color:var(--accent-hi);}
.mobile-drawer .drawer-actions{margin-top:24px;display:flex;flex-direction:column;gap:14px;}
.mobile-drawer .search-box{width:100%;}

/* ===== Hero ===== */
.hero{position:relative;min-height:calc(100vh - 72px);min-height:620px;display:flex;align-items:center;padding:136px 0 96px;background-image:linear-gradient(180deg,rgba(6,10,17,.35) 0%,rgba(6,10,17,.88) 100%),radial-gradient(60% 50% at 70% 20%,rgba(31,182,232,.16),transparent 70%),url('/assets/images/backpic/back-1.png');background-size:cover;background-position:center;overflow:hidden;}
.hero::before{content:"";position:absolute;inset:0;background-image:linear-gradient(rgba(255,255,255,.04) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.04) 1px,transparent 1px);background-size:24px 24px;opacity:.6;pointer-events:none;}
.hero .container{position:relative;z-index:2;}
.hero-content{max-width:720px;}
.hero h1{margin-top:22px;font-size:clamp(32px,4.4vw,56px);line-height:1.15;font-weight:700;letter-spacing:-.5px;color:var(--t1);}
.hero h1 .hl{color:var(--accent-hi);}
.hero-sub{margin-top:20px;font-size:18px;line-height:1.75;color:var(--t2);max-width:560px;}
.hero-actions{display:flex;gap:16px;margin-top:36px;flex-wrap:wrap;}
.hero-actions .btn{min-height:52px;padding:0 30px;font-size:16px;}
.trust-bar{display:flex;align-items:stretch;gap:0;margin-top:56px;flex-wrap:wrap;}
.trust-item{padding:0 28px;border-left:1px solid var(--line-strong);}
.trust-item:first-child{border-left:0;padding-left:0;}
.trust-num{font-size:28px;font-weight:700;color:var(--accent-hi);line-height:1.2;font-variant-numeric:tabular-nums;}
.trust-label{font-size:13px;color:var(--t3);margin-top:4px;}
.hero-card{position:absolute;right:24px;bottom:56px;width:200px;padding:12px;border-radius:var(--r-lg);background:rgba(255,255,255,.06);backdrop-filter:blur(18px) saturate(140%);border:1px solid var(--line);box-shadow:var(--sh-2);z-index:3;}
.hero-card img{width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:var(--r-sm);}
.hero-card p{margin-top:10px;font-size:12px;line-height:1.6;color:var(--t2);}
.hero-card strong{display:block;font-size:13px;color:var(--t1);font-weight:600;}

/* ===== 卖点拼贴 ===== */
.feat-grid{display:grid;grid-template-columns:repeat(12,1fr);gap:24px;}
.feat-card{position:relative;background:rgba(255,255,255,.055);backdrop-filter:blur(18px) saturate(140%);border:1px solid var(--line);border-radius:var(--r-lg);padding:28px;box-shadow:var(--sh-1);transition:transform .25s var(--ease),border-color .25s var(--ease),box-shadow .25s var(--ease);overflow:hidden;}
.feat-card::before{content:"";position:absolute;top:0;left:0;right:0;height:1px;background:linear-gradient(90deg,transparent,var(--chrome),transparent);opacity:.25;}
.feat-card:hover{transform:translateY(-4px);border-color:var(--line-accent);box-shadow:var(--sh-glow-brand);}
.feat-a{grid-column:span 7;grid-row:span 2;display:flex;flex-direction:column;}
.feat-b{grid-column:span 5;}
.feat-c{grid-column:span 5;}
.feat-d{grid-column:span 12;display:flex;align-items:center;gap:24px;}
.feat-icon{width:54px;height:54px;border-radius:50%;display:flex;align-items:center;justify-content:center;border:1px solid rgba(31,182,232,.4);background:rgba(31,182,232,.08);margin-bottom:18px;}
.feat-icon svg{width:26px;height:26px;stroke:var(--brand);fill:none;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round;}
.feat-card h3{font-size:20px;font-weight:600;color:var(--t1);line-height:1.4;margin-bottom:10px;}
.feat-card p{font-size:15px;line-height:1.8;color:var(--t2);}
.feat-a figure{margin-top:auto;padding-top:24px;}
.feat-a img{width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:var(--r-md);border:1px solid var(--line);}

/* ===== 场景演示 ===== */
.demo-grid{display:grid;grid-template-columns:5fr 7fr;gap:48px;align-items:center;}
.demo-steps{position:relative;}
.step{position:relative;padding-left:64px;padding-bottom:36px;}
.step:last-child{padding-bottom:0;}
.step::before{content:"";position:absolute;left:21px;top:44px;bottom:0;width:1px;background-image:linear-gradient(180deg,var(--line-strong) 50%,transparent 0);background-size:1px 8px;background-repeat:repeat-y;}
.step:last-child::before{display:none;}
.step-num{position:absolute;left:0;top:0;width:44px;height:44px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:16px;font-weight:700;color:var(--accent-hi);background:rgba(245,165,36,.1);border:1px solid rgba(245,165,36,.45);font-variant-numeric:tabular-nums;}
.step h3{font-size:20px;font-weight:600;color:var(--t1);margin-bottom:6px;line-height:1.4;}
.step p{font-size:15px;color:var(--t2);line-height:1.75;}
.device-panel{position:relative;border-radius:var(--r-xl);padding:14px;background:rgba(255,255,255,.055);backdrop-filter:blur(18px) saturate(140%);border:1px solid var(--line);box-shadow:var(--sh-2),0 0 60px rgba(31,182,232,.14);}
.device-bar{display:flex;gap:7px;padding:4px 6px 12px;}
.device-bar i{width:10px;height:10px;border-radius:50%;background:var(--line-strong);display:block;}
.device-bar i:nth-child(1){background:rgba(242,85,90,.7);}
.device-bar i:nth-child(2){background:rgba(245,165,36,.7);}
.device-bar i:nth-child(3){background:rgba(53,208,138,.7);}
.device-panel img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:var(--r-md);}

/* ===== 最新信息 ===== */
.news-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;}
.news-card{display:flex;flex-direction:column;background:var(--bg-2);border:1px solid var(--line);border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--sh-1);transition:transform .25s var(--ease),border-color .25s var(--ease),box-shadow .25s var(--ease);}
.news-card:hover{transform:translateY(-4px);border-color:var(--line-accent);box-shadow:var(--sh-glow-brand);}
.news-thumb{overflow:hidden;}
.news-thumb img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .4s var(--ease);}
.news-card:hover .news-thumb img{transform:scale(1.04);}
.news-body{padding:24px;display:flex;flex-direction:column;gap:10px;flex:1;}
.news-title{font-size:19px;font-weight:600;color:var(--t1);line-height:1.45;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-desc{font-size:14px;line-height:1.75;color:var(--t2);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-meta{display:flex;align-items:center;justify-content:space-between;margin-top:auto;padding-top:8px;font-size:13px;color:var(--t3);font-variant-numeric:tabular-nums;}
.news-meta .arw{color:var(--brand);font-size:16px;transition:transform .2s var(--ease);}
.news-card:hover .news-meta .arw{transform:translateX(4px);}
.empty-state{border:1px dashed var(--line-strong);border-radius:var(--r-lg);padding:56px 24px;text-align:center;color:var(--t3);font-size:14px;grid-column:span 2;}
.empty-state .empty-icon{width:44px;height:44px;margin:0 auto 14px;border-radius:50%;border:1px solid var(--line-strong);display:flex;align-items:center;justify-content:center;color:var(--t3);}

/* ===== 社会认同 ===== */
.proof-grid{display:grid;grid-template-columns:7fr 5fr;gap:32px;align-items:start;}
.review-list{display:flex;flex-direction:column;gap:18px;}
.review-card{position:relative;padding:26px 28px;border-radius:var(--r-lg);background:rgba(255,255,255,.055);backdrop-filter:blur(18px);border:1px solid var(--line);box-shadow:var(--sh-1);transition:border-color .25s var(--ease),transform .25s var(--ease);}
.review-card:hover{border-color:var(--line-accent);transform:translateY(-3px);}
.review-card::after{content:"”";position:absolute;right:22px;top:6px;font-size:64px;line-height:1;color:rgba(255,255,255,.06);font-family:Georgia,serif;}
.review-text{font-size:15px;line-height:1.8;color:var(--t2);position:relative;z-index:1;}
.review-foot{display:flex;align-items:center;gap:12px;margin-top:16px;}
.avatar{width:38px;height:38px;border-radius:50%;background:linear-gradient(135deg,rgba(31,182,232,.5),rgba(245,165,36,.5));display:flex;align-items:center;justify-content:center;font-size:14px;font-weight:700;color:var(--t1);}
.review-name{font-size:14px;color:var(--t1);font-weight:600;}
.review-role{font-size:12px;color:var(--t3);}
.stars{display:flex;gap:3px;margin-bottom:14px;}
.stars svg{width:14px;height:14px;fill:var(--accent-hi);}
.data-panel{border-radius:var(--r-xl);background:var(--bg-2);border:1px solid var(--line);padding:8px 28px;box-shadow:var(--sh-2);}
.data-row{padding:26px 0;border-bottom:1px solid var(--line);}
.data-row:last-child{border-bottom:0;}
.data-num{font-size:40px;font-weight:700;color:var(--accent-hi);line-height:1.1;font-variant-numeric:tabular-nums;}
.data-label{font-size:14px;color:var(--t2);margin-top:8px;}
.data-sub{font-size:12px;color:var(--t3);margin-top:4px;}

/* ===== FAQ ===== */
.faq-layout{display:grid;grid-template-columns:5fr 7fr;gap:48px;align-items:start;}
.faq-intro h2{font-size:clamp(26px,3vw,36px);font-weight:700;color:var(--t1);line-height:1.3;}
.faq-intro p{margin-top:16px;font-size:14px;color:var(--t3);line-height:1.8;max-width:340px;}
.faq-intro .btn-text{margin-top:20px;}
.faq-list{display:flex;flex-direction:column;gap:12px;}
.faq-item{border-radius:var(--r-md);background:rgba(255,255,255,.05);border:1px solid var(--line);backdrop-filter:blur(14px);transition:border-color .2s var(--ease),background .2s var(--ease);overflow:hidden;}
.faq-item:hover{border-color:var(--line-strong);background:rgba(255,255,255,.07);}
.faq-item.is-open{border-color:var(--line-accent);}
.faq-q{display:flex;align-items:center;justify-content:space-between;gap:18px;width:100%;text-align:left;padding:20px 24px;font-size:16px;font-weight:600;color:var(--t1);line-height:1.5;}
.faq-ico{position:relative;width:16px;height:16px;flex-shrink:0;transition:transform .25s var(--ease);}
.faq-ico::before,.faq-ico::after{content:"";position:absolute;background:var(--accent-hi);border-radius:2px;}
.faq-ico::before{left:0;top:7px;width:16px;height:2px;}
.faq-ico::after{left:7px;top:0;width:2px;height:16px;}
.faq-item.is-open .faq-ico{transform:rotate(135deg);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s var(--ease);}
.faq-a p{padding:0 24px 22px;font-size:15px;line-height:1.9;color:var(--t2);}
.faq-item.is-open .faq-a{max-height:360px;}

/* ===== 底部转化 ===== */
.cta-panel{position:relative;border-radius:var(--r-xl);padding:56px;background:rgba(255,255,255,.055);backdrop-filter:blur(20px) saturate(140%);border:1px solid var(--line);box-shadow:var(--sh-2);overflow:hidden;}
.cta-panel::before{content:"";position:absolute;inset:0;background:radial-gradient(50% 60% at 15% 10%,rgba(245,165,36,.14),transparent 70%),radial-gradient(50% 60% at 85% 90%,rgba(31,182,232,.14),transparent 70%);pointer-events:none;}
.cta-inner{position:relative;z-index:1;display:grid;grid-template-columns:5fr 7fr;gap:48px;align-items:start;}
.cta-inner h2{font-size:clamp(26px,3vw,34px);font-weight:700;color:var(--t1);line-height:1.3;}
.cta-inner .cta-desc{margin-top:16px;font-size:15px;color:var(--t2);line-height:1.85;max-width:380px;}
.cta-inner .cta-points{margin-top:24px;display:flex;flex-direction:column;gap:10px;}
.cta-inner .cta-points li{display:flex;align-items:center;gap:10px;font-size:14px;color:var(--t2);}
.cta-inner .cta-points li::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--brand);box-shadow:0 0 8px var(--brand-glow);flex-shrink:0;}
.contact-form{display:flex;flex-direction:column;gap:18px;}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:18px;}
.field{display:flex;flex-direction:column;gap:8px;}
.field label{font-size:13px;color:var(--t3);}
.field input,.field textarea{width:100%;background:rgba(255,255,255,.04);border:1px solid var(--line);border-radius:var(--r-md);color:var(--t1);font-size:15px;padding:0 16px;transition:border-color .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease);}
.field input{height:48px;}
.field textarea{padding:14px 16px;min-height:118px;resize:vertical;line-height:1.7;}
.field input::placeholder,.field textarea::placeholder{color:var(--t3);}
.field input:focus,.field textarea:focus{outline:none;border-color:var(--line-accent);box-shadow:0 0 0 3px rgba(31,182,232,.18);background:rgba(255,255,255,.06);}
.form-note{font-size:12px;color:var(--t3);line-height:1.7;}

/* ===== 吸底条 ===== */
.sticky-bar{position:fixed;left:0;right:0;bottom:0;z-index:130;height:64px;display:flex;align-items:center;background:rgba(9,14,22,.92);backdrop-filter:blur(18px) saturate(140%);border-top:1px solid var(--line);box-shadow:var(--sh-2);transform:translateY(120%);opacity:0;pointer-events:none;transition:transform .28s var(--ease),opacity .28s var(--ease);}
.sticky-bar.is-visible{transform:translateY(0);opacity:1;pointer-events:auto;}
.sticky-inner{display:flex;align-items:center;justify-content:space-between;gap:20px;width:100%;}
.sticky-tip{display:flex;align-items:center;gap:10px;font-size:15px;color:var(--t1);}
.sticky-tip .lamp{width:8px;height:8px;border-radius:50%;background:var(--ok);box-shadow:0 0 10px rgba(53,208,138,.8);flex-shrink:0;}
.sticky-actions{display:flex;align-items:center;gap:12px;}

/* ===== Footer ===== */
.site-footer{position:relative;background:var(--bg-0);border-top:1px solid var(--line);padding:64px 0 28px;overflow:hidden;}
.site-footer::before{content:"";position:absolute;top:-160px;left:50%;transform:translateX(-50%);width:900px;height:320px;background:radial-gradient(50% 50% at 50% 50%,rgba(31,182,232,.12),transparent 70%);pointer-events:none;}
.footer-grid{position:relative;display:grid;grid-template-columns:repeat(12,1fr);gap:32px;}
.footer-brand{grid-column:span 4;}
.footer-brand .logo{margin-bottom:16px;}
.footer-brand p{font-size:14px;line-height:1.85;color:var(--t3);max-width:300px;}
.footer-col{grid-column:span 2;}
.footer-col h3{font-size:14px;font-weight:600;color:var(--t1);margin-bottom:16px;}
.footer-col li{margin-bottom:10px;}
.footer-col a{font-size:14px;color:var(--t3);}
.footer-col a:hover{color:var(--brand);}
.footer-info{grid-column:span 4;}
.footer-info h3{font-size:14px;font-weight:600;color:var(--t1);margin-bottom:16px;}
.footer-info p{font-size:13px;line-height:1.9;color:var(--t3);}
.footer-bottom{position:relative;margin-top:44px;padding-top:24px;border-top:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:13px;color:var(--t3);}
.footer-bottom .links{display:flex;gap:18px;flex-wrap:wrap;}
.footer-bottom a:hover{color:var(--brand);}

/* ===== 响应式 ===== */
@media (max-width:1439px){
  .container{max-width:1140px;}
}
@media (max-width:1199px){
  .container{max-width:960px;}
  .search-box{display:none;}
  .nav-links a{font-size:14px;padding:10px 9px;}
  .hero-card{display:none;}
  .demo-grid{gap:32px;}
  .cta-panel{padding:44px;}
}
@media (max-width:991px){
  .nav-links{display:none;}
  .nav-toggle{display:flex;}
  .nav-right .btn{display:none;}
  .nav-inner{height:72px;}
  .section{padding:72px 0;}
  .hero{min-height:560px;padding:120px 0 72px;}
  .feat-a{grid-column:span 12;grid-row:auto;}
  .feat-b,.feat-c{grid-column:span 6;}
  .feat-d{grid-column:span 12;flex-direction:column;align-items:flex-start;gap:14px;}
  .demo-grid{grid-template-columns:1fr;gap:36px;}
  .device-panel{order:-1;}
  .proof-grid{grid-template-columns:1fr;gap:24px;}
  .faq-layout{grid-template-columns:1fr;gap:32px;}
  .faq-intro p{max-width:none;}
  .cta-inner{grid-template-columns:1fr;gap:32px;}
  .footer-brand{grid-column:span 12;}
  .footer-col{grid-column:span 4;}
  .footer-info{grid-column:span 12;margin-top:8px;}
}
@media (max-width:767px){
  .container{padding:0 24px;}
  .section{padding:56px 0;}
  .section-head{margin-bottom:32px;}
  .hero{padding:112px 0 64px;}
  .hero-sub{font-size:16px;}
  .hero-actions{flex-direction:column;gap:12px;align-items:stretch;}
  .hero-actions .btn{width:100%;}
  .trust-bar{gap:20px 0;margin-top:40px;}
  .trust-item{padding:0 18px;}
  .trust-num{font-size:24px;}
  .feat-b,.feat-c{grid-column:span 12;}
  .news-grid{grid-template-columns:1fr;}
  .empty-state{grid-column:span 1;}
  .form-row{grid-template-columns:1fr;}
  .cta-panel{padding:32px 22px;}
  .footer-col{grid-column:span 6;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .sticky-bar{height:56px;}
  .sticky-tip{font-size:13px;}
  .sticky-actions .btn-text{display:none;}
}
@media (max-width:520px){
  .container{padding:0 18px;}
  .logo-text{font-size:15px;}
  .hero h1{font-size:30px;}
  .trust-item{padding:0 14px;}
  .trust-item:nth-child(3){border-left:0;padding-left:0;}
  .step{padding-left:54px;}
  .step-num{width:38px;height:38px;font-size:14px;}
  .faq-q{padding:16px 18px;font-size:15px;}
  .faq-a p{padding:0 18px 18px;font-size:14px;}
  .review-card{padding:20px;}
  .data-num{font-size:32px;}
  .sticky-tip{max-width:52%;line-height:1.3;}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;scroll-behavior:auto!important;}
}

/* roulang page: article */
:root{
  --bg-0:#060A11;
  --bg-1:#0B1119;
  --bg-2:#111A26;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.16);
  --line-accent:rgba(31,182,232,.35);
  --t1:#E8EEF6;
  --t2:#9EADBF;
  --t3:#6B7B8E;
  --t-inv:#060A11;
  --brand:#1FB6E8;
  --brand-deep:#0E7FB0;
  --brand-glow:rgba(31,182,232,.35);
  --accent:#F5A524;
  --accent-hi:#FFC24D;
  --accent-deep:#E8890B;
  --accent-glow:rgba(245,165,36,.38);
  --chrome:#C6D3E2;
  --ok:#35D08A;
  --warn:#F5A524;
  --err:#F2555A;
  --r-sm:10px;
  --r-md:14px;
  --r-lg:20px;
  --r-xl:26px;
  --r-pill:999px;
  --sh-1:0 8px 24px rgba(0,0,0,.35);
  --sh-2:0 20px 60px rgba(0,0,0,.5);
  --sh-glow-brand:0 0 0 1px rgba(31,182,232,.3),0 10px 30px rgba(31,182,232,.22);
  --sh-glow-accent:0 0 0 1px rgba(245,165,36,.4),0 12px 34px rgba(245,165,36,.3);
  --ease:cubic-bezier(.2,.7,.3,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--t2);
  font-family:-apple-system,"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Microsoft YaHei",sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none;transition:color .2s var(--ease)}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
button,input{font-family:inherit;font-size:inherit;color:inherit}
button{cursor:pointer;background:none;border:0;padding:0}
svg{display:block}
::selection{background:rgba(245,165,36,.28);color:#fff}
:focus-visible{outline:2px solid rgba(31,182,232,.75);outline-offset:3px;border-radius:4px}
.container{width:100%;max-width:1240px;margin:0 auto;padding:0 24px}
.num{font-variant-numeric:tabular-nums}

/* ---------- header ---------- */
.site-header{
  position:fixed;
  top:0;left:0;right:0;
  z-index:90;
  background:rgba(6,10,17,.35);
  -webkit-backdrop-filter:blur(16px) saturate(140%);
  backdrop-filter:blur(16px) saturate(140%);
  border-bottom:1px solid var(--line);
  transition:background .3s var(--ease),box-shadow .3s var(--ease),border-color .3s var(--ease);
}
.site-header.is-stuck{
  background:rgba(6,10,17,.9);
  border-bottom-color:var(--line-strong);
  box-shadow:var(--sh-1);
}
.header-inner{
  height:72px;
  display:flex;
  align-items:center;
  gap:24px;
}
.logo{
  display:inline-flex;
  align-items:center;
  gap:10px;
  height:32px;
  flex:0 0 auto;
}
.logo-mark{
  width:30px;height:30px;
  filter:drop-shadow(0 0 6px var(--accent-glow));
  flex:0 0 auto;
}
.logo-text{
  font-size:17px;
  font-weight:700;
  letter-spacing:.2px;
  color:var(--t1);
  white-space:nowrap;
}
.logo-text em{
  font-style:normal;
  color:var(--accent);
  font-weight:600;
  margin-left:2px;
}
.nav-links{
  display:flex;
  align-items:center;
  gap:26px;
  margin-left:8px;
  flex:1 1 auto;
}
.nav-links a{
  position:relative;
  font-size:15px;
  color:var(--t2);
  padding:6px 0;
  white-space:nowrap;
  transition:color .2s var(--ease);
}
.nav-links a::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:0;
  height:2px;
  background:var(--accent);
  border-radius:2px;
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform .22s var(--ease);
}
.nav-links a:hover{color:var(--t1)}
.nav-links a:hover::after,
.nav-links a[aria-current="page"]::after{transform:scaleX(1)}
.nav-links a[aria-current="page"]{color:var(--t1);font-weight:600}
.header-actions{
  display:flex;
  align-items:center;
  gap:12px;
  flex:0 0 auto;
}
.search-box{
  position:relative;
  width:196px;
  height:44px;
  display:flex;
  align-items:center;
  gap:8px;
  padding:0 16px;
  border-radius:var(--r-pill);
  background:rgba(255,255,255,.055);
  border:1px solid var(--line);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  backdrop-filter:blur(18px) saturate(140%);
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.search-box:focus-within{
  border-color:var(--line-accent);
  box-shadow:var(--sh-glow-brand);
}
.search-box svg{width:16px;height:16px;flex:0 0 auto;stroke:var(--t3);fill:none;stroke-width:2}
.search-box input{
  width:100%;
  border:0;
  background:none;
  font-size:14px;
  color:var(--t1);
  outline:none;
}
.search-box input::placeholder{color:var(--t3)}
.menu-toggle{
  display:none;
  width:44px;height:44px;
  align-items:center;
  justify-content:center;
  border-radius:var(--r-sm);
  border:1px solid var(--line);
  background:rgba(255,255,255,.055);
  color:var(--t1);
}
.menu-toggle span{
  display:block;
  width:18px;height:2px;
  background:var(--t1);
  border-radius:2px;
  position:relative;
}
.menu-toggle span::before,
.menu-toggle span::after{
  content:"";
  position:absolute;left:0;
  width:18px;height:2px;
  background:var(--t1);
  border-radius:2px;
  transition:transform .22s var(--ease);
}
.menu-toggle span::before{top:-6px}
.menu-toggle span::after{top:6px}
.menu-toggle[aria-expanded="true"] span{background:transparent}
.menu-toggle[aria-expanded="true"] span::before{transform:translateY(6px) rotate(45deg)}
.menu-toggle[aria-expanded="true"] span::after{transform:translateY(-6px) rotate(-45deg)}
.mobile-drawer{
  display:none;
  position:fixed;
  top:72px;left:0;right:0;bottom:0;
  z-index:88;
  padding:24px;
  background:rgba(6,10,17,.94);
  -webkit-backdrop-filter:blur(20px) saturate(140%);
  backdrop-filter:blur(20px) saturate(140%);
  border-top:1px solid var(--line);
  overflow-y:auto;
}
.mobile-drawer.is-open{display:block}
.mobile-drawer a.m-link{
  display:flex;
  align-items:center;
  justify-content:space-between;
  font-size:18px;
  color:var(--t1);
  padding:16px 4px;
  border-bottom:1px solid var(--line);
}
.mobile-drawer a.m-link span{color:var(--t3);font-size:16px}
.mobile-drawer .m-search{
  margin-top:20px;
  width:100%;
}
.mobile-drawer .m-cta{margin-top:18px;display:block;text-align:center}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:44px;
  padding:0 26px;
  border-radius:var(--r-pill);
  font-size:15px;
  font-weight:600;
  letter-spacing:.2px;
  white-space:nowrap;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease),border-color .2s var(--ease),color .2s var(--ease);
}
.btn:active{transform:translateY(1px)}
.btn-primary{
  background:linear-gradient(135deg,var(--accent-hi),var(--accent-deep));
  color:var(--t-inv);
  box-shadow:var(--sh-glow-accent);
}
.btn-primary:hover{
  transform:translateY(-2px);
  box-shadow:0 0 0 1px rgba(245,165,36,.55),0 16px 40px rgba(245,165,36,.42);
}
.btn-ghost{
  background:rgba(255,255,255,.04);
  border:1px solid var(--line-accent);
  color:var(--t1);
}
.btn-ghost:hover{
  background:rgba(255,255,255,.09);
  border-color:rgba(31,182,232,.6);
}
.btn-sm{min-height:40px;padding:0 20px;font-size:14px}
.btn-block{width:100%}

/* ---------- breadcrumb ---------- */
.page-wrap{padding-top:72px}
.breadcrumb{
  padding:28px 0 0;
  font-size:13px;
  color:var(--t3);
  display:flex;
  align-items:center;
  gap:8px;
  flex-wrap:wrap;
}
.breadcrumb a{color:var(--t3)}
.breadcrumb a:hover{color:var(--brand)}
.breadcrumb .sep{color:rgba(255,255,255,.2)}
.breadcrumb .current{
  color:var(--t3);
  max-width:60ch;
  overflow:hidden;
  text-overflow:ellipsis;
  white-space:nowrap;
}

/* ---------- article head ---------- */
.article-hero{
  position:relative;
  padding:34px 0 36px;
  border-bottom:1px solid var(--line);
  overflow:hidden;
}
.article-hero::before{
  content:"";
  position:absolute;
  inset:0;
  background:radial-gradient(60% 120% at 15% 0%,rgba(31,182,232,.14),transparent 65%),
             radial-gradient(40% 90% at 92% 10%,rgba(245,165,36,.10),transparent 70%);
  pointer-events:none;
}
.article-hero .container{position:relative;z-index:1}
.badge-cat{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:12px;
  letter-spacing:.5px;
  color:var(--accent);
  background:rgba(245,165,36,.12);
  border:1px solid rgba(245,165,36,.28);
  border-radius:6px;
  padding:3px 10px;
  margin-bottom:18px;
}
.badge-cat:hover{background:rgba(245,165,36,.2);color:var(--accent-hi)}
.article-title{
  font-size:clamp(28px,3.6vw,40px);
  line-height:1.28;
  font-weight:700;
  letter-spacing:-.4px;
  color:var(--t1);
  max-width:900px;
}
.article-meta{
  display:flex;
  align-items:center;
  flex-wrap:wrap;
  gap:10px;
  margin-top:20px;
  font-size:13px;
  color:var(--t3);
}
.article-meta .dot{width:3px;height:3px;border-radius:50%;background:rgba(255,255,255,.22)}
.article-meta .tag-ok{
  display:inline-flex;
  align-items:center;
  gap:6px;
  color:var(--ok);
}
.article-meta .tag-ok i{
  width:6px;height:6px;
  border-radius:50%;
  background:var(--ok);
  box-shadow:0 0 10px rgba(53,208,138,.7);
  display:inline-block;
}

/* ---------- layout ---------- */
.article-layout{
  display:grid;
  grid-template-columns:repeat(12,1fr);
  gap:24px;
  padding:48px 0 96px;
}
.article-main{grid-column:span 8;min-width:0}
.article-side{grid-column:span 4;min-width:0}
.side-sticky{position:sticky;top:96px;display:flex;flex-direction:column;gap:20px}

/* ---------- article body ---------- */
.article-body{
  font-size:17px;
  line-height:1.95;
  color:var(--t2);
  max-width:760px;
}
.article-body p{margin:0 0 20px}
.article-body h2{
  font-size:24px;
  line-height:1.45;
  font-weight:700;
  color:var(--t1);
  margin:44px 0 16px;
  padding-left:14px;
  border-left:3px solid var(--accent);
  scroll-margin-top:96px;
}
.article-body h3{
  font-size:20px;
  line-height:1.5;
  font-weight:600;
  color:var(--t1);
  margin:32px 0 12px;
  scroll-margin-top:96px;
}
.article-body h4{
  font-size:17px;
  font-weight:600;
  color:var(--t1);
  margin:24px 0 10px;
}
.article-body ul,
.article-body ol{
  margin:0 0 20px;
  padding-left:1.4em;
  list-style:disc;
}
.article-body ol{list-style:decimal}
.article-body li{margin:8px 0;line-height:1.9}
.article-body li::marker{color:var(--accent)}
.article-body blockquote{
  margin:24px 0;
  padding:18px 22px;
  border-left:3px solid var(--brand);
  border-radius:0 var(--r-md) var(--r-md) 0;
  background:rgba(255,255,255,.055);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  backdrop-filter:blur(18px) saturate(140%);
  color:var(--t2);
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{
  margin:24px 0 12px;
  border-radius:var(--r-md);
  border:1px solid var(--line);
  width:100%;
  height:auto;
}
.article-body figure{margin:24px 0}
.article-body figcaption{
  font-size:13px;
  color:var(--t3);
  margin-top:10px;
}
.article-body a{
  color:var(--brand);
  text-decoration:underline;
  text-underline-offset:3px;
  text-decoration-thickness:1px;
}
.article-body a:hover{color:var(--accent-hi)}
.article-body strong{color:var(--t1);font-weight:600}
.article-body hr{
  border:0;
  height:1px;
  background:var(--line);
  margin:36px 0;
}
.article-body table{
  width:100%;
  border-collapse:collapse;
  margin:24px 0;
  font-size:15px;
  border:1px solid var(--line);
  border-radius:var(--r-md);
  overflow:hidden;
}
.article-body thead th{
  background:var(--bg-2);
  color:var(--t1);
  font-weight:600;
  text-align:left;
}
.article-body th,
.article-body td{
  padding:12px 16px;
  border-bottom:1px solid var(--line);
  line-height:1.7;
}
.article-body tbody tr:last-child td{border-bottom:0}
.article-body tbody tr:hover{background:rgba(255,255,255,.03)}
.article-body code{
  font-family:ui-monospace,Menlo,Consolas,monospace;
  font-size:.92em;
  background:rgba(255,255,255,.07);
  border:1px solid var(--line);
  border-radius:6px;
  padding:1px 6px;
  color:var(--chrome);
}

/* ---------- article footer bits ---------- */
.tag-row{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  margin-top:40px;
  padding-top:28px;
  border-top:1px solid var(--line);
}
.tag-pill{
  display:inline-flex;
  align-items:center;
  height:32px;
  padding:0 14px;
  border-radius:var(--r-pill);
  font-size:13px;
  color:var(--t2);
  background:rgba(255,255,255,.055);
  border:1px solid var(--line);
  transition:color .2s var(--ease),border-color .2s var(--ease),background .2s var(--ease);
}
.tag-pill:hover{color:var(--t1);border-color:var(--line-accent);background:rgba(255,255,255,.09)}
.back-row{
  display:flex;
  flex-wrap:wrap;
  gap:12px;
  margin-top:28px;
}

/* ---------- sidebar ---------- */
.side-card{
  background:rgba(255,255,255,.055);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  backdrop-filter:blur(18px) saturate(140%);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.08),var(--sh-2);
  padding:24px;
}
.side-card h3{
  font-size:14px;
  font-weight:600;
  color:var(--t1);
  letter-spacing:.4px;
  margin-bottom:16px;
  display:flex;
  align-items:center;
  gap:8px;
}
.side-card h3::before{
  content:"";
  width:3px;height:14px;
  border-radius:2px;
  background:var(--accent);
  display:inline-block;
}
.toc-list li{margin-bottom:12px}
.toc-list li:last-child{margin-bottom:0}
.toc-list a{
  display:flex;
  gap:10px;
  font-size:14px;
  line-height:1.65;
  color:var(--t2);
}
.toc-list a:hover{color:var(--brand)}
.toc-list .n{
  color:var(--t3);
  font-size:12px;
  font-variant-numeric:tabular-nums;
  flex:0 0 auto;
  padding-top:2px;
}
.hot-list li{
  display:flex;
  gap:12px;
  padding:12px 0;
  border-bottom:1px solid var(--line);
}
.hot-list li:first-child{padding-top:0}
.hot-list li:last-child{border-bottom:0;padding-bottom:0}
.hot-list .idx{
  font-size:15px;
  font-weight:700;
  color:var(--accent);
  font-variant-numeric:tabular-nums;
  flex:0 0 auto;
  line-height:1.5;
}
.hot-list a{
  font-size:14px;
  line-height:1.6;
  color:var(--t2);
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.hot-list a:hover{color:var(--t1)}
.side-cta{
  border-color:rgba(245,165,36,.28);
  background:linear-gradient(160deg,rgba(245,165,36,.10),rgba(255,255,255,.045) 55%);
}
.side-cta p{
  font-size:14px;
  line-height:1.75;
  color:var(--t2);
  margin-bottom:18px;
}

/* ---------- related ---------- */
.related-section{
  padding:0 0 96px;
}
.section-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:20px;
  margin-bottom:32px;
  flex-wrap:wrap;
}
.section-head h2{
  font-size:clamp(22px,2.4vw,28px);
  font-weight:700;
  color:var(--t1);
  letter-spacing:-.2px;
}
.section-head .note{font-size:13px;color:var(--t3)}
.related-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:24px;
}
.related-card{
  display:flex;
  flex-direction:column;
  background:var(--bg-2);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  overflow:hidden;
  box-shadow:var(--sh-1);
  transition:transform .25s var(--ease),border-color .25s var(--ease),box-shadow .25s var(--ease);
}
.related-card:hover{
  transform:translateY(-4px);
  border-color:var(--line-accent);
  box-shadow:var(--sh-glow-brand);
}
.related-thumb{
  position:relative;
  aspect-ratio:16/9;
  overflow:hidden;
  background:var(--bg-1);
}
.related-thumb img{
  width:100%;height:100%;
  object-fit:cover;
  transition:transform .35s var(--ease);
}
.related-card:hover .related-thumb img{transform:scale(1.05)}
.related-body{padding:20px 22px 24px}
.related-body h3{
  font-size:16px;
  line-height:1.55;
  font-weight:600;
  color:var(--t1);
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.related-body .time{
  margin-top:12px;
  font-size:13px;
  color:var(--t3);
  font-variant-numeric:tabular-nums;
  display:flex;
  align-items:center;
  gap:8px;
}
.related-body .time .arrow{margin-left:auto;color:var(--brand);transition:transform .22s var(--ease)}
.related-card:hover .time .arrow{transform:translateX(4px)}

/* ---------- empty ---------- */
.empty-state{
  border:1px dashed var(--line);
  border-radius:var(--r-lg);
  padding:64px 24px;
  text-align:center;
  background:rgba(255,255,255,.02);
}
.empty-state .ico{
  width:48px;height:48px;
  margin:0 auto 18px;
  border-radius:50%;
  border:1px solid var(--line-strong);
  display:flex;
  align-items:center;
  justify-content:center;
  color:var(--t3);
  font-size:22px;
}
.empty-state p{font-size:14px;color:var(--t3);margin-bottom:22px}

/* ---------- footer ---------- */
.site-footer{
  position:relative;
  background:var(--bg-0);
  border-top:1px solid var(--line);
  padding:64px 0 0;
  overflow:hidden;
}
.site-footer::before{
  content:"";
  position:absolute;
  top:0;left:50%;
  transform:translateX(-50%);
  width:820px;height:220px;
  background:radial-gradient(50% 100% at 50% 0%,rgba(31,182,232,.10),transparent 70%);
  pointer-events:none;
}
.site-footer .container{position:relative;z-index:1}
.footer-grid{
  display:grid;
  grid-template-columns:repeat(12,1fr);
  gap:24px;
  padding-bottom:48px;
}
.footer-brand{grid-column:span 4}
.footer-col{grid-column:span 3}
.footer-info{grid-column:span 2}
.footer-brand .logo{margin-bottom:16px}
.footer-brand p{
  font-size:13px;
  line-height:1.9;
  color:var(--t3);
  max-width:320px;
}
.footer-col h3,
.footer-info h3{
  font-size:14px;
  font-weight:600;
  color:var(--t1);
  margin-bottom:16px;
}
.footer-col li{margin-bottom:10px}
.footer-col a{
  font-size:14px;
  color:var(--t3);
}
.footer-col a:hover{color:var(--brand)}
.footer-info p{
  font-size:13px;
  line-height:1.9;
  color:var(--t3);
}
.footer-bottom{
  border-top:1px solid var(--line);
  padding:22px 0 26px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
  font-size:13px;
  color:var(--t3);
}
.footer-bottom .links{display:flex;gap:18px;flex-wrap:wrap}
.footer-bottom .links a{color:var(--t3)}
.footer-bottom .links a:hover{color:var(--brand)}

/* ---------- responsive ---------- */
@media (max-width:1439px){
  .container{max-width:1140px}
}
@media (max-width:1199px){
  .container{max-width:960px}
  .nav-links{gap:20px}
  .nav-links a{font-size:14px}
  .search-box{width:160px}
  .article-layout{grid-template-columns:repeat(12,1fr);gap:20px}
  .article-main{grid-column:span 8}
  .article-side{grid-column:span 4}
}
@media (max-width:991px){
  .container{max-width:100%}
  .nav-links{display:none}
  .search-box{display:none}
  .menu-toggle{display:flex}
  .header-inner{gap:16px;justify-content:space-between}
  .mobile-drawer{top:72px}
  .article-layout{display:block;padding:36px 0 72px}
  .article-side{margin-top:40px}
  .side-sticky{position:static}
  .related-grid{grid-template-columns:1fr 1fr}
  .related-grid > *:nth-child(3){display:none}
  .footer-brand{grid-column:span 12}
  .footer-col{grid-column:span 4}
  .footer-info{grid-column:span 12}
  .article-body{max-width:100%}
  .related-section{padding-bottom:72px}
}
@media (max-width:767px){
  .container{padding:0 18px}
  .site-header .container{padding:0 18px}
  .header-inner{height:60px}
  .mobile-drawer{top:60px;padding:20px 18px 40px}
  .logo-text{font-size:15px}
  .logo-mark{width:26px;height:26px}
  .page-wrap{padding-top:60px}
  .breadcrumb{padding-top:20px;font-size:12px}
  .article-hero{padding:26px 0 28px}
  .article-title{font-size:26px;line-height:1.35}
  .article-meta{font-size:12px;gap:8px}
  .article-body{font-size:16px;line-height:1.9}
  .article-body h2{font-size:21px;margin-top:36px}
  .article-body h3{font-size:18px}
  .article-body table{
    display:block;
    overflow-x:auto;
    -webkit-overflow-scrolling:touch;
    min-width:0;
  }
  .related-grid{grid-template-columns:1fr}
  .related-grid > *:nth-child(3){display:flex}
  .footer-grid{gap:20px;padding-bottom:36px}
  .footer-col{grid-column:span 6}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .section-head{margin-bottom:24px}
}
@media (max-width:480px){
  .btn{width:100%;padding:0 18px}
  .back-row .btn{width:100%}
  .article-hero{padding:22px 0 24px}
  .article-title{font-size:23px}
  .side-card{padding:20px}
  .footer-col{grid-column:span 12}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{
    animation-duration:.001ms !important;
    transition-duration:.001ms !important;
    scroll-behavior:auto !important;
  }
}

/* roulang page: category1 */
:root{
  --bg-0:#060A11;
  --bg-1:#0B1119;
  --bg-2:#111A26;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.16);
  --line-accent:rgba(31,182,232,.35);
  --t1:#E8EEF6;
  --t2:#9EADBF;
  --t3:#6B7B8E;
  --t-inv:#060A11;
  --brand:#1FB6E8;
  --brand-deep:#0E7FB0;
  --brand-glow:rgba(31,182,232,.35);
  --accent:#F5A524;
  --accent-hi:#FFC24D;
  --accent-deep:#E8890B;
  --accent-glow:rgba(245,165,36,.38);
  --chrome:#C6D3E2;
  --ok:#35D08A;
  --warn:#F5A524;
  --err:#F2555A;
  --r-sm:10px;
  --r-md:14px;
  --r-lg:20px;
  --r-xl:26px;
  --r-pill:999px;
  --sh-1:0 8px 24px rgba(0,0,0,.35);
  --sh-2:0 20px 60px rgba(0,0,0,.5);
  --sh-glow-brand:0 0 0 1px rgba(31,182,232,.3),0 10px 30px rgba(31,182,232,.22);
  --sh-glow-accent:0 0 0 1px rgba(245,165,36,.4),0 12px 34px rgba(245,165,36,.3);
  --ease:cubic-bezier(.2,.7,.3,1);
  --font-cn:-apple-system,"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Microsoft YaHei",sans-serif;
  --font-num:Inter,"Barlow",-apple-system,"PingFang SC","Microsoft YaHei",sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--t2);
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
h1,h2,h3,h4,p,ul,ol,figure,blockquote{margin:0}
ul,ol{padding:0;list-style:none}
a{color:inherit;text-decoration:none;transition:color .2s var(--ease)}
img{max-width:100%;display:block;height:auto}
button,input{font:inherit;color:inherit}
button{cursor:pointer;background:none;border:none}
svg{display:block}
::selection{background:rgba(245,165,36,.28);color:#fff}
:focus-visible{outline:2px solid rgba(31,182,232,.75);outline-offset:3px;border-radius:6px}

.container{
  width:100%;
  max-width:1240px;
  margin:0 auto;
  padding:0 24px;
}

/* ---------- 头部导航 ---------- */
.site-header{
  position:fixed;
  top:0;left:0;right:0;
  z-index:120;
  background:rgba(6,10,17,.35);
  -webkit-backdrop-filter:blur(16px) saturate(140%);
  backdrop-filter:blur(16px) saturate(140%);
  border-bottom:1px solid var(--line);
  transition:background .3s var(--ease),box-shadow .3s var(--ease),border-color .3s var(--ease);
}
.site-header.is-stuck{
  background:rgba(6,10,17,.9);
  box-shadow:var(--sh-1);
  border-bottom-color:var(--line-strong);
}
.header-inner{
  display:flex;
  align-items:center;
  gap:24px;
  min-height:72px;
}
.logo{
  display:inline-flex;
  align-items:center;
  gap:10px;
  flex-shrink:0;
}
.logo-mark{
  width:30px;height:30px;
  filter:drop-shadow(0 0 6px rgba(245,165,36,.55));
}
.logo-text{
  font-size:17px;
  font-weight:700;
  letter-spacing:.5px;
  color:var(--t1);
  white-space:nowrap;
}
.logo-text em{
  font-style:normal;
  font-weight:600;
  color:var(--accent);
  margin-left:2px;
  font-size:14px;
  letter-spacing:1px;
}
.nav-links{
  display:flex;
  align-items:center;
  gap:26px;
  margin-left:auto;
}
.nav-links a{
  position:relative;
  font-size:15px;
  color:var(--t2);
  padding:6px 0;
  white-space:nowrap;
}
.nav-links a::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:-2px;
  height:2px;
  background:var(--accent);
  border-radius:2px;
  transform:scaleX(0);
  transform-origin:left;
  transition:transform .22s var(--ease);
}
.nav-links a:hover{color:var(--t1)}
.nav-links a:hover::after{transform:scaleX(1)}
.nav-links a[aria-current="page"]{color:var(--t1);font-weight:600}
.nav-links a[aria-current="page"]::after{transform:scaleX(1)}
.header-actions{
  display:flex;
  align-items:center;
  gap:12px;
  flex-shrink:0;
}
.nav-search{
  position:relative;
  display:flex;
  align-items:center;
  height:44px;
  width:190px;
  padding:0 14px 0 40px;
  border-radius:var(--r-pill);
  background:rgba(255,255,255,.055);
  border:1px solid var(--line);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  backdrop-filter:blur(18px) saturate(140%);
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.nav-search:focus-within{
  border-color:var(--line-accent);
  box-shadow:var(--sh-glow-brand);
}
.nav-search svg{
  position:absolute;
  left:14px;top:50%;
  transform:translateY(-50%);
  width:16px;height:16px;
  stroke:var(--t3);
  fill:none;
  stroke-width:1.8;
}
.nav-search input{
  width:100%;
  border:none;
  background:none;
  outline:none;
  font-size:14px;
  color:var(--t1);
}
.nav-search input::placeholder{color:var(--t3)}
.nav-toggle{
  display:none;
  width:44px;height:44px;
  border-radius:var(--r-sm);
  border:1px solid var(--line);
  background:rgba(255,255,255,.055);
  align-items:center;
  justify-content:center;
  flex-direction:column;
  gap:5px;
}
.nav-toggle span{
  display:block;
  width:18px;height:2px;
  border-radius:2px;
  background:var(--t1);
  transition:transform .25s var(--ease),opacity .2s var(--ease);
}
.nav-toggle.is-active span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle.is-active span:nth-child(2){opacity:0}
.nav-toggle.is-active span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

.mobile-drawer{
  position:fixed;
  top:60px;left:0;right:0;
  bottom:0;
  z-index:110;
  display:none;
  flex-direction:column;
  padding:24px 18px 40px;
  background:rgba(6,10,17,.96);
  -webkit-backdrop-filter:blur(20px) saturate(140%);
  backdrop-filter:blur(20px) saturate(140%);
  border-top:1px solid var(--line);
  overflow-y:auto;
  opacity:0;
  pointer-events:none;
  transition:opacity .25s var(--ease);
}
.mobile-drawer.is-open{opacity:1;pointer-events:auto}
.mobile-drawer a.drawer-link{
  display:flex;
  align-items:center;
  justify-content:space-between;
  font-size:18px;
  color:var(--t1);
  padding:16px 4px;
  border-bottom:1px solid var(--line);
}
.mobile-drawer a.drawer-link::after{
  content:"›";
  color:var(--t3);
  font-size:22px;
  line-height:1;
}
.mobile-drawer a.drawer-link[aria-current="page"]{color:var(--accent)}
.drawer-search{
  display:flex;
  height:48px;
  margin:24px 0 16px;
  padding:0 16px;
  align-items:center;
  gap:10px;
  border-radius:var(--r-md);
  border:1px solid var(--line);
  background:rgba(255,255,255,.04);
}
.drawer-search input{
  flex:1;
  border:none;background:none;outline:none;
  font-size:15px;color:var(--t1);
}
.drawer-search input::placeholder{color:var(--t3)}
.drawer-cta{
  display:flex;
  align-items:center;
  justify-content:center;
  height:50px;
  border-radius:var(--r-pill);
  font-weight:600;
  color:var(--t-inv);
  background:linear-gradient(135deg,var(--accent-hi),var(--accent-deep));
  box-shadow:var(--sh-glow-accent);
}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:44px;
  padding:0 26px;
  border-radius:var(--r-pill);
  font-weight:600;
  font-size:15px;
  line-height:1;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease),border-color .2s var(--ease),color .2s var(--ease);
}
.btn:active{transform:translateY(1px)}
.btn-primary{
  color:var(--t-inv);
  background:linear-gradient(135deg,#FFC24D 0%,#E8890B 100%);
  box-shadow:var(--sh-glow-accent);
}
.btn-primary:hover{
  transform:translateY(-2px);
  box-shadow:0 0 0 1px rgba(255,194,77,.55),0 16px 40px rgba(245,165,36,.4);
  background:linear-gradient(160deg,#FFC24D 0%,#E8890B 100%);
}
.btn-ghost{
  color:var(--t1);
  border:1px solid var(--line-accent);
  background:rgba(255,255,255,.055);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  backdrop-filter:blur(18px) saturate(140%);
}
.btn-ghost:hover{
  background:rgba(255,255,255,.1);
  border-color:rgba(31,182,232,.55);
  transform:translateY(-2px);
}
.btn-plain{
  color:var(--t1);
  padding:0;
  min-height:auto;
  background:none;
}
.btn-plain::after{
  content:"→";
  transition:transform .2s var(--ease);
  color:var(--accent);
}
.btn-plain:hover{color:var(--accent)}
.btn-plain:hover::after{transform:translateX(4px)}
.btn-sm{min-height:38px;padding:0 20px;font-size:14px}

/* ---------- 页头 ---------- */
.page-head{
  position:relative;
  overflow:hidden;
  padding:150px 0 72px;
  min-height:300px;
  background:
    linear-gradient(180deg,rgba(6,10,17,.6) 0%,rgba(6,10,17,.94) 100%),
    radial-gradient(60% 50% at 72% 18%,rgba(31,182,232,.18),transparent 70%),
    url("/assets/images/backpic/back-2.webp") center/cover no-repeat;
}
.page-head::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:linear-gradient(rgba(255,255,255,.04) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.04) 1px,transparent 1px);
  background-size:24px 24px;
  opacity:.5;
  pointer-events:none;
}
.page-head .container{position:relative;z-index:2}
.breadcrumb{
  display:flex;
  align-items:center;
  flex-wrap:wrap;
  gap:8px;
  font-size:13px;
  color:var(--t3);
  margin-bottom:22px;
}
.breadcrumb a{color:var(--t3)}
.breadcrumb a:hover{color:var(--brand)}
.breadcrumb span.sep{color:var(--line-strong)}
.breadcrumb span.current{color:var(--t2)}
.head-badge{
  display:inline-flex;
  align-items:center;
  gap:8px;
  height:28px;
  padding:0 14px;
  border-radius:var(--r-pill);
  border:1px solid rgba(245,165,36,.45);
  background:rgba(245,165,36,.08);
  color:var(--accent-hi);
  font-size:12px;
  letter-spacing:.5px;
  margin-bottom:20px;
}
.head-badge i{
  width:6px;height:6px;
  border-radius:50%;
  background:var(--accent);
  box-shadow:0 0 10px var(--accent-glow);
  font-style:normal;
}
.page-head h1{
  font-size:clamp(30px,4vw,46px);
  line-height:1.2;
  font-weight:700;
  letter-spacing:-.5px;
  color:var(--t1);
  max-width:900px;
}
.page-head h1 em{
  font-style:normal;
  color:var(--accent-hi);
}
.page-head .lead{
  margin-top:18px;
  max-width:760px;
  font-size:16px;
  line-height:1.85;
  color:var(--t2);
}
.head-actions{
  display:flex;
  flex-wrap:wrap;
  gap:14px;
  margin-top:30px;
}
.head-tags{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  margin-top:26px;
}
.tag{
  display:inline-flex;
  align-items:center;
  height:28px;
  padding:0 12px;
  border-radius:6px;
  font-size:12px;
  letter-spacing:.5px;
  color:var(--accent-hi);
  background:rgba(245,165,36,.12);
  border:1px solid rgba(245,165,36,.18);
}
.tag-brand{
  color:#9FE0F7;
  background:rgba(31,182,232,.12);
  border-color:rgba(31,182,232,.2);
}

/* ---------- 板块通用 ---------- */
.section{
  padding:96px 0;
}
.section.alt{background:var(--bg-1)}
.section-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:32px;
  margin-bottom:48px;
}
.section-head h2{
  font-size:clamp(26px,3vw,38px);
  line-height:1.25;
  font-weight:700;
  color:var(--t1);
  letter-spacing:-.3px;
}
.section-head .sub{
  margin-top:12px;
  font-size:14px;
  color:var(--t3);
  max-width:620px;
}
.section-head .hint{
  font-size:13px;
  color:var(--t3);
  white-space:nowrap;
  padding-bottom:6px;
}

/* ---------- 图文对照 ---------- */
.compare-grid{
  display:grid;
  grid-template-columns:5fr 7fr;
  gap:56px;
  align-items:start;
}
.figure-frame{
  position:relative;
  border-radius:var(--r-lg);
  border:1px solid var(--line);
  background:var(--bg-2);
  overflow:hidden;
  box-shadow:var(--sh-2),0 0 0 1px rgba(31,182,232,.12),0 0 60px rgba(31,182,232,.14);
}
.figure-dots{
  display:flex;
  align-items:center;
  gap:7px;
  padding:14px 18px;
  border-bottom:1px solid var(--line);
  background:rgba(255,255,255,.04);
}
.figure-dots i{
  width:9px;height:9px;
  border-radius:50%;
  background:rgba(255,255,255,.18);
  display:block;
}
.figure-dots i:nth-child(1){background:rgba(242,85,90,.7)}
.figure-dots i:nth-child(2){background:rgba(245,165,36,.7)}
.figure-dots i:nth-child(3){background:rgba(53,208,138,.7)}
.figure-frame img{
  width:100%;
  aspect-ratio:16/11;
  object-fit:cover;
}
.figure-caption{
  padding:16px 18px;
  font-size:13px;
  color:var(--t3);
  border-top:1px solid var(--line);
  line-height:1.7;
}
.figure-aside{
  margin-top:22px;
  padding:20px 22px;
  border-radius:var(--r-md);
  border:1px solid var(--line);
  border-left:3px solid var(--brand);
  background:rgba(255,255,255,.045);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  backdrop-filter:blur(18px) saturate(140%);
}
.figure-aside h3{
  font-size:16px;
  font-weight:600;
  color:var(--t1);
  margin-bottom:8px;
}
.figure-aside p{
  font-size:14px;
  line-height:1.85;
  color:var(--t2);
}
.step-list{
  display:flex;
  flex-direction:column;
  gap:12px;
}
.step-item{
  display:grid;
  grid-template-columns:64px 1fr;
  gap:18px;
  padding:24px 26px;
  border-radius:var(--r-lg);
  border:1px solid var(--line);
  background:var(--bg-2);
  transition:border-color .25s var(--ease),transform .25s var(--ease),box-shadow .25s var(--ease);
}
.step-item:hover{
  border-color:var(--line-accent);
  transform:translateY(-4px);
  box-shadow:var(--sh-glow-brand);
}
.step-num{
  width:56px;height:56px;
  display:flex;
  align-items:center;
  justify-content:center;
  border-radius:var(--r-md);
  border:1px solid rgba(245,165,36,.45);
  color:var(--accent-hi);
  font-family:var(--font-num);
  font-size:22px;
  font-weight:700;
  font-variant-numeric:tabular-nums;
  background:rgba(245,165,36,.07);
  letter-spacing:.5px;
}
.step-item h3{
  font-size:18px;
  font-weight:600;
  color:var(--t1);
  line-height:1.4;
  margin-bottom:8px;
}
.step-item p{
  font-size:15px;
  line-height:1.85;
  color:var(--t2);
}

/* ---------- 数据带 ---------- */
.metric-band{
  margin-top:56px;
  display:grid;
  grid-template-columns:repeat(3,1fr);
  border-radius:var(--r-lg);
  border:1px solid var(--line);
  background:rgba(255,255,255,.055);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  backdrop-filter:blur(18px) saturate(140%);
  box-shadow:var(--sh-2);
  overflow:hidden;
}
.metric{
  padding:30px 28px;
  border-right:1px solid var(--line);
}
.metric:last-child{border-right:none}
.metric b{
  display:block;
  font-family:var(--font-num);
  font-size:40px;
  font-weight:700;
  line-height:1.1;
  color:var(--accent);
  font-variant-numeric:tabular-nums;
  letter-spacing:-1px;
}
.metric span{
  display:block;
  margin-top:8px;
  font-size:14px;
  color:var(--t2);
}
.metric small{
  display:block;
  margin-top:4px;
  font-size:13px;
  color:var(--t3);
}

/* ---------- 核对清单 ---------- */
.check-wrap{
  border-radius:var(--r-xl);
  border:1px solid var(--line);
  background:var(--bg-2);
  padding:44px 40px;
  box-shadow:var(--sh-1);
}
.check-grid{
  display:grid;
  grid-template-columns:repeat(2,1fr);
  gap:0 48px;
}
.check-item{
  display:grid;
  grid-template-columns:26px 1fr;
  gap:14px;
  padding:22px 0;
  border-bottom:1px solid var(--line);
}
.check-item:nth-last-child(-n+2){border-bottom:none}
.check-mark{
  width:22px;height:22px;
  margin-top:4px;
  border-radius:50%;
  border:1px solid rgba(31,182,232,.45);
  display:flex;
  align-items:center;
  justify-content:center;
}
.check-mark svg{
  width:12px;height:12px;
  stroke:var(--brand);
  fill:none;
  stroke-width:2.4;
  stroke-linecap:round;
  stroke-linejoin:round;
}
.check-item h3{
  font-size:16px;
  font-weight:600;
  color:var(--t1);
  margin-bottom:6px;
  line-height:1.5;
}
.check-item p{
  font-size:14.5px;
  line-height:1.85;
  color:var(--t2);
}

/* ---------- FAQ ---------- */
.faq-layout{
  display:grid;
  grid-template-columns:4fr 8fr;
  gap:56px;
  align-items:start;
}
.faq-intro h2{
  font-size:clamp(26px,3vw,36px);
  line-height:1.28;
  font-weight:700;
  color:var(--t1);
}
.faq-intro p{
  margin-top:14px;
  font-size:14px;
  color:var(--t3);
  line-height:1.85;
  max-width:320px;
}
.faq-intro .btn{margin-top:24px}
.faq-list{display:flex;flex-direction:column;gap:12px}
.faq-item{
  border-radius:var(--r-md);
  border:1px solid var(--line);
  background:rgba(255,255,255,.045);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  backdrop-filter:blur(18px) saturate(140%);
  overflow:hidden;
  transition:border-color .2s var(--ease),background .2s var(--ease);
}
.faq-item:hover{border-color:var(--line-strong)}
.faq-item.is-open{border-color:var(--line-accent)}
.faq-q{
  width:100%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:18px;
  padding:20px 24px;
  text-align:left;
  font-size:16px;
  font-weight:600;
  color:var(--t1);
  line-height:1.6;
}
.faq-icon{
  position:relative;
  width:16px;height:16px;
  flex-shrink:0;
  transition:transform .25s var(--ease);
}
.faq-icon::before,
.faq-icon::after{
  content:"";
  position:absolute;
  background:var(--accent);
  border-radius:2px;
}
.faq-icon::before{left:0;top:7px;width:16px;height:2px}
.faq-icon::after{left:7px;top:0;width:2px;height:16px}
.faq-item.is-open .faq-icon{transform:rotate(45deg)}
.faq-a{
  max-height:0;
  overflow:hidden;
  transition:max-height .3s var(--ease);
}
.faq-a p{
  padding:0 24px 22px;
  font-size:15px;
  line-height:1.9;
  color:var(--t2);
}

/* ---------- 相关内容 ---------- */
.related-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:24px;
}
.rel-card{
  display:flex;
  flex-direction:column;
  border-radius:var(--r-lg);
  border:1px solid var(--line);
  background:var(--bg-2);
  overflow:hidden;
  transition:border-color .25s var(--ease),transform .25s var(--ease),box-shadow .25s var(--ease);
}
.rel-card:hover{
  border-color:var(--line-accent);
  transform:translateY(-4px);
  box-shadow:var(--sh-glow-brand);
}
.rel-card img{
  width:100%;
  aspect-ratio:16/9;
  object-fit:cover;
  border-bottom:1px solid var(--line);
}
.rel-body{padding:22px 24px 24px}
.rel-body .tag{margin-bottom:14px}
.rel-body h3{
  font-size:18px;
  font-weight:600;
  color:var(--t1);
  line-height:1.5;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.rel-body p{
  margin-top:10px;
  font-size:14px;
  line-height:1.85;
  color:var(--t2);
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.rel-foot{
  margin-top:16px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  font-size:13px;
  color:var(--t3);
  font-variant-numeric:tabular-nums;
}
.rel-foot span.arrow{color:var(--accent);font-size:16px;transition:transform .2s var(--ease)}
.rel-card:hover .rel-foot span.arrow{transform:translateX(4px)}

/* ---------- CTA 条 ---------- */
.cta-bar{
  position:relative;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:32px;
  padding:38px 44px;
  border-radius:var(--r-xl);
  border:1px solid var(--line);
  background:
    radial-gradient(120% 160% at 12% 0%,rgba(31,182,232,.18),transparent 62%),
    radial-gradient(120% 160% at 96% 100%,rgba(245,165,36,.16),transparent 60%),
    rgba(255,255,255,.045);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  backdrop-filter:blur(18px) saturate(140%);
  box-shadow:var(--sh-2);
  overflow:hidden;
}
.cta-bar h2{
  font-size:clamp(22px,2.4vw,28px);
  font-weight:700;
  color:var(--t1);
  line-height:1.35;
}
.cta-bar p{
  margin-top:10px;
  font-size:14px;
  color:var(--t2);
  max-width:620px;
}
.cta-bar .btn{flex-shrink:0}

/* ---------- 页脚 ---------- */
.site-footer{
  position:relative;
  background:var(--bg-0);
  border-top:1px solid var(--line);
  padding:72px 0 0;
  overflow:hidden;
}
.site-footer::before{
  content:"";
  position:absolute;
  top:-180px;left:50%;
  transform:translateX(-50%);
  width:900px;height:360px;
  background:radial-gradient(closest-side,rgba(31,182,232,.14),transparent 72%);
  pointer-events:none;
}
.site-footer .container{position:relative;z-index:1}
.footer-grid{
  display:grid;
  grid-template-columns:4fr 2.5fr 2.5fr 3fr;
  gap:40px;
  padding-bottom:56px;
}
.footer-brand p{
  margin-top:18px;
  font-size:14px;
  line-height:1.9;
  color:var(--t3);
  max-width:340px;
}
.footer-col h3,
.footer-info h3{
  font-size:14px;
  font-weight:600;
  color:var(--t1);
  margin-bottom:16px;
  letter-spacing:.3px;
}
.footer-col li{margin-bottom:12px}
.footer-col a{
  font-size:14px;
  color:var(--t3);
}
.footer-col a:hover{color:var(--brand)}
.footer-info p{
  font-size:14px;
  line-height:1.9;
  color:var(--t3);
}
.footer-bottom{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  flex-wrap:wrap;
  padding:22px 0 30px;
  border-top:1px solid var(--line);
  font-size:13px;
  color:var(--t3);
  font-variant-numeric:tabular-nums;
}
.footer-bottom .links{display:flex;gap:20px}
.footer-bottom .links a{color:var(--t3)}
.footer-bottom .links a:hover{color:var(--brand)}

/* ---------- 响应式 ---------- */
@media (max-width:1439px){
  .container{max-width:1240px}
}
@media (max-width:1199px){
  .container{max-width:960px}
  .nav-links{gap:20px}
  .nav-search{width:160px}
  .compare-grid{gap:40px}
  .faq-layout{gap:40px}
}
@media (max-width:991px){
  .container{max-width:100%;padding:0 24px}
  .nav-links,.nav-search{display:none}
  .nav-toggle{display:flex}
  .mobile-drawer{display:flex}
  .header-inner{min-height:60px}
  .site-header{height:60px}
  .section{padding:72px 0}
  .page-head{padding:130px 0 60px;min-height:280px}
  .compare-grid{grid-template-columns:1fr;gap:36px}
  .faq-layout{grid-template-columns:1fr;gap:32px}
  .faq-intro p{max-width:none}
  .related-grid{grid-template-columns:1fr 1fr}
  .metric-band{grid-template-columns:1fr}
  .metric{border-right:none;border-bottom:1px solid var(--line)}
  .metric:last-child{border-bottom:none}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px}
  .cta-bar{flex-direction:column;align-items:flex-start;padding:32px 28px}
}
@media (max-width:767px){
  body{font-size:15.5px}
  .container{padding:0 18px}
  .section{padding:56px 0}
  .page-head{padding:112px 0 52px}
  .page-head h1{font-size:clamp(26px,7vw,34px)}
  .head-actions{flex-direction:column;align-items:stretch}
  .head-actions .btn{width:100%}
  .section-head{flex-direction:column;align-items:flex-start;gap:12px;margin-bottom:32px}
  .section-head .hint{white-space:normal;padding-bottom:0}
  .check-wrap{padding:26px 20px;border-radius:var(--r-lg)}
  .check-grid{grid-template-columns:1fr;gap:0}
  .check-item:nth-last-child(-n+2){border-bottom:1px solid var(--line)}
  .check-item:last-child{border-bottom:none}
  .step-item{grid-template-columns:48px 1fr;gap:14px;padding:20px}
  .step-num{width:44px;height:44px;font-size:18px;border-radius:var(--r-sm)}
  .related-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr;gap:32px}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:12px}
  .faq-q{font-size:15px;padding:18px 18px}
  .faq-a p{padding:0 18px 20px}
  .cta-bar{padding:26px 20px;gap:22px}
  .cta-bar .btn{width:100%}
}
@media (max-width:480px){
  .logo-text{font-size:15px}
  .logo-text em{font-size:12px}
  .page-head{padding:100px 0 46px}
  .metric{padding:22px 20px}
  .metric b{font-size:32px}
  .rel-body{padding:18px 18px 20px}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{
    animation-duration:.001ms !important;
    transition-duration:.001ms !important;
    scroll-behavior:auto !important;
  }
}

/* roulang page: category2 */
:root{
  --bg-0:#060A11;
  --bg-1:#0B1119;
  --bg-2:#111A26;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.16);
  --line-accent:rgba(31,182,232,.35);
  --t1:#E8EEF6;
  --t2:#9EADBF;
  --t3:#6B7B8E;
  --t-inv:#060A11;
  --brand:#1FB6E8;
  --brand-deep:#0E7FB0;
  --brand-glow:rgba(31,182,232,.35);
  --accent:#F5A524;
  --accent-hi:#FFC24D;
  --accent-deep:#E8890B;
  --accent-glow:rgba(245,165,36,.38);
  --chrome:#C6D3E2;
  --ok:#35D08A;
  --warn:#F5A524;
  --err:#F2555A;
  --r-sm:10px;
  --r-md:14px;
  --r-lg:20px;
  --r-xl:26px;
  --r-pill:999px;
  --sh-1:0 8px 24px rgba(0,0,0,.35);
  --sh-2:0 20px 60px rgba(0,0,0,.5);
  --sh-glow-brand:0 0 0 1px rgba(31,182,232,.3),0 10px 30px rgba(31,182,232,.22);
  --sh-glow-accent:0 0 0 1px rgba(245,165,36,.4),0 12px 34px rgba(245,165,36,.3);
  --font-cn:-apple-system,"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Microsoft YaHei",sans-serif;
  --font-num:Inter,"Barlow",-apple-system,"PingFang SC","Microsoft YaHei",sans-serif;
  --ease:cubic-bezier(.2,.7,.3,1);
  --nav-h:72px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--t2);
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border:0;}
a{color:inherit;text-decoration:none;}
button{font-family:inherit;cursor:pointer;}
input,textarea,select{font-family:inherit;font-size:16px;}
h1,h2,h3,h4{margin:0;color:var(--t1);font-weight:700;letter-spacing:-.3px;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
svg{display:block;}
::selection{background:rgba(245,165,36,.28);color:#fff;}

.container{
  width:100%;
  max-width:1240px;
  margin:0 auto;
  padding:0 24px;
}
@media (min-width:1440px){.container{max-width:1240px;}}
@media (max-width:1439px){.container{max-width:1140px;}}
@media (max-width:1199px){.container{max-width:960px;}}
@media (max-width:767px){.container{padding:0 18px;}}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:44px;
  padding:0 26px;
  border-radius:var(--r-pill);
  font-size:15px;
  font-weight:600;
  border:1px solid transparent;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease),border-color .2s var(--ease),color .2s var(--ease);
  white-space:nowrap;
  background:none;
  color:var(--t1);
  line-height:1;
}
.btn:focus-visible{outline:2px solid rgba(31,182,232,.75);outline-offset:3px;}
.btn:active{transform:translateY(1px);}
.btn-primary{
  background:linear-gradient(135deg,var(--accent-hi) 0%,var(--accent-deep) 100%);
  color:var(--t-inv);
  box-shadow:var(--sh-glow-accent);
}
.btn-primary:hover{
  transform:translateY(-2px);
  background:linear-gradient(160deg,var(--accent-hi) 0%,var(--accent-deep) 100%);
  box-shadow:0 0 0 1px rgba(245,165,36,.55),0 16px 40px rgba(245,165,36,.36);
}
.btn-glass{
  background:rgba(255,255,255,.055);
  border-color:var(--line-accent);
  color:var(--t1);
  backdrop-filter:blur(14px) saturate(140%);
}
.btn-glass:hover{
  background:rgba(255,255,255,.1);
  border-color:rgba(31,182,232,.6);
  transform:translateY(-2px);
  box-shadow:var(--sh-glow-brand);
}
.btn-ghost{
  color:var(--brand);
  padding:0 4px;
  min-height:36px;
  font-weight:600;
}
.btn-ghost svg{transition:transform .2s var(--ease);}
.btn-ghost:hover{color:var(--accent);}
.btn-ghost:hover svg{transform:translateX(4px);}
.btn-sm{min-height:40px;padding:0 20px;font-size:14px;}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:fixed;
  top:0;left:0;right:0;
  z-index:120;
  background:rgba(6,10,17,.35);
  backdrop-filter:blur(16px) saturate(140%);
  border-bottom:1px solid var(--line);
  transition:background .3s var(--ease),box-shadow .3s var(--ease),border-color .3s var(--ease);
}
.site-header.is-stuck{
  background:rgba(6,10,17,.9);
  box-shadow:var(--sh-1);
  border-bottom-color:var(--line-strong);
}
.header-inner{
  display:flex;
  align-items:center;
  gap:28px;
  height:var(--nav-h);
}
.logo{
  display:inline-flex;
  align-items:center;
  gap:10px;
  height:32px;
  flex:0 0 auto;
}
.logo-mark{
  width:30px;height:30px;
  filter:drop-shadow(0 0 6px rgba(245,165,36,.55));
}
.logo-text{
  font-size:17px;
  font-weight:700;
  color:var(--t1);
  letter-spacing:.2px;
  line-height:1;
  white-space:nowrap;
}
.logo-text em{
  font-style:normal;
  font-size:13px;
  font-weight:600;
  color:var(--accent);
  margin-left:6px;
  letter-spacing:1px;
}
.nav-links{
  display:flex;
  align-items:center;
  gap:4px;
  margin-left:8px;
}
.nav-links a{
  position:relative;
  display:inline-block;
  padding:10px 12px;
  font-size:15px;
  color:var(--t2);
  border-radius:var(--r-sm);
  transition:color .2s var(--ease),background .2s var(--ease);
  white-space:nowrap;
}
.nav-links a::after{
  content:"";
  position:absolute;
  left:12px;right:12px;bottom:4px;
  height:2px;
  border-radius:2px;
  background:linear-gradient(90deg,var(--accent-hi),var(--accent-deep));
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform .25s var(--ease);
}
.nav-links a:hover{color:var(--t1);background:rgba(255,255,255,.04);}
.nav-links a:hover::after{transform:scaleX(1);}
.nav-links a[aria-current="page"]{color:var(--t1);}
.nav-links a[aria-current="page"]::after{transform:scaleX(1);}
.header-actions{
  display:flex;
  align-items:center;
  gap:12px;
  margin-left:auto;
}
.search-box{
  position:relative;
  display:flex;
  align-items:center;
  height:44px;
  width:200px;
  padding:0 14px 0 38px;
  border-radius:var(--r-pill);
  background:rgba(255,255,255,.05);
  border:1px solid var(--line);
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease);
}
.search-box svg{
  position:absolute;
  left:14px;top:50%;
  transform:translateY(-50%);
  width:16px;height:16px;
  stroke:var(--t3);
}
.search-box input{
  width:100%;
  border:0;
  background:none;
  color:var(--t1);
  font-size:14px;
  outline:none;
  line-height:1;
}
.search-box input::placeholder{color:var(--t3);}
.search-box:focus-within{
  border-color:var(--line-accent);
  background:rgba(255,255,255,.08);
  box-shadow:var(--sh-glow-brand);
}
.nav-toggle{
  display:none;
  width:44px;height:44px;
  align-items:center;
  justify-content:center;
  border-radius:var(--r-sm);
  border:1px solid var(--line);
  background:rgba(255,255,255,.05);
}
.nav-toggle span{
  display:block;
  width:18px;height:2px;
  background:var(--t1);
  border-radius:2px;
  position:relative;
  transition:transform .2s var(--ease),opacity .2s var(--ease);
}
.nav-toggle span::before,
.nav-toggle span::after{
  content:"";
  position:absolute;left:0;
  width:18px;height:2px;
  background:var(--t1);
  border-radius:2px;
  transition:transform .2s var(--ease);
}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}
.nav-toggle.is-open span{background:transparent;}
.nav-toggle.is-open span::before{transform:translateY(6px) rotate(45deg);}
.nav-toggle.is-open span::after{transform:translateY(-6px) rotate(-45deg);}

.mobile-drawer{
  display:none;
  position:fixed;
  top:60px;left:0;right:0;
  max-height:calc(100vh - 60px);
  overflow-y:auto;
  padding:20px 18px 32px;
  background:rgba(6,10,17,.96);
  backdrop-filter:blur(18px) saturate(140%);
  border-top:1px solid var(--line);
  box-shadow:var(--sh-2);
  transform:translateY(-12px);
  opacity:0;
  pointer-events:none;
  transition:opacity .24s var(--ease),transform .24s var(--ease);
}
.mobile-drawer.is-open{
  opacity:1;
  transform:translateY(0);
  pointer-events:auto;
}
.mobile-drawer a{
  display:flex;
  align-items:center;
  justify-content:space-between;
  padding:14px 4px;
  font-size:18px;
  color:var(--t1);
  border-bottom:1px solid var(--line);
}
.mobile-drawer a svg{width:16px;height:16px;stroke:var(--t3);}
.mobile-drawer a[aria-current="page"]{color:var(--accent);}
.mobile-drawer .drawer-cta{
  margin-top:20px;
  width:100%;
}

/* ---------- 页头 ---------- */
.page-hero{
  position:relative;
  padding:calc(var(--nav-h) + 64px) 0 64px;
  min-height:300px;
  overflow:hidden;
  border-bottom:1px solid var(--line);
  background:var(--bg-1);
}
.page-hero::before{
  content:"";
  position:absolute;inset:0;
  background-image:url("/assets/images/backpic/back-1.png");
  background-size:cover;
  background-position:center;
  opacity:.34;
  filter:saturate(.9);
}
.page-hero::after{
  content:"";
  position:absolute;inset:0;
  background:
    radial-gradient(60% 70% at 78% 10%, rgba(31,182,232,.2), transparent 70%),
    radial-gradient(45% 60% at 12% 90%, rgba(245,165,36,.14), transparent 72%),
    linear-gradient(180deg, rgba(6,10,17,.6) 0%, rgba(6,10,17,.95) 100%);
}
.page-hero .container{position:relative;z-index:2;}
.crumbs{
  display:flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  color:var(--t3);
  margin-bottom:20px;
  flex-wrap:wrap;
}
.crumbs a{color:var(--t2);transition:color .2s var(--ease);}
.crumbs a:hover{color:var(--brand);}
.crumbs span{color:var(--t3);}
.crumbs .current{color:var(--t3);}
.page-hero h1{
  font-size:clamp(32px,4.4vw,46px);
  line-height:1.15;
  margin-bottom:18px;
  max-width:16em;
}
.page-hero .lead{
  max-width:760px;
  font-size:16px;
  line-height:1.9;
  color:var(--t2);
}
.hero-actions{
  display:flex;
  flex-wrap:wrap;
  gap:14px;
  margin-top:30px;
}
.hero-tags{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  margin-bottom:18px;
}
.tag-pill{
  display:inline-flex;
  align-items:center;
  gap:8px;
  height:30px;
  padding:0 14px;
  border-radius:var(--r-pill);
  border:1px solid rgba(245,165,36,.45);
  background:rgba(245,165,36,.1);
  color:var(--accent-hi);
  font-size:12px;
  letter-spacing:.5px;
  font-weight:600;
}
.tag-pill .dot{
  width:6px;height:6px;
  border-radius:50%;
  background:var(--accent-hi);
  box-shadow:0 0 8px var(--accent-glow);
}

/* ---------- 通用区块 ---------- */
.section{padding:96px 0;}
.section.alt{background:var(--bg-1);}
.section-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:24px;
  margin-bottom:44px;
}
.section-head h2{
  font-size:clamp(26px,3vw,36px);
  line-height:1.25;
}
.section-head p{
  font-size:14px;
  color:var(--t3);
  max-width:460px;
}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:12px;
  letter-spacing:2px;
  color:var(--brand);
  font-weight:600;
  margin-bottom:14px;
  text-transform:uppercase;
}
.eyebrow::before{
  content:"";
  width:22px;height:2px;
  background:linear-gradient(90deg,var(--brand),transparent);
}

/* ---------- 时间线 ---------- */
.timeline{
  position:relative;
  display:grid;
  gap:34px;
  margin-top:8px;
}
.timeline::before{
  content:"";
  position:absolute;
  left:50%;
  top:10px;
  bottom:10px;
  width:2px;
  transform:translateX(-1px);
  background:linear-gradient(180deg,rgba(31,182,232,.55) 0%,rgba(31,182,232,.25) 45%,rgba(245,165,36,.5) 100%);
  border-radius:2px;
}
.tl-item{
  display:grid;
  grid-template-columns:1fr 64px 1fr;
  align-items:center;
}
.tl-dot-wrap{
  grid-column:2;
  justify-self:center;
  position:relative;
  z-index:2;
}
.tl-dot{
  width:16px;height:16px;
  border-radius:50%;
  background:var(--accent-hi);
  box-shadow:0 0 0 4px rgba(245,165,36,.16),0 0 16px var(--accent-glow);
}
.tl-card{
  grid-column:1;
  background:rgba(255,255,255,.055);
  backdrop-filter:blur(18px) saturate(140%);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  padding:24px 26px;
  box-shadow:var(--sh-1),inset 0 1px 0 rgba(255,255,255,.09);
  transition:border-color .25s var(--ease),transform .25s var(--ease),box-shadow .25s var(--ease);
}
.tl-item.right .tl-card{grid-column:3;}
.tl-card:hover{
  border-color:var(--line-accent);
  transform:translateY(-4px);
  box-shadow:var(--sh-glow-brand),inset 0 1px 0 rgba(255,255,255,.12);
}
.tl-num{
  font-family:var(--font-num);
  font-size:32px;
  font-weight:700;
  line-height:1;
  color:var(--accent);
  font-variant-numeric:tabular-nums;
  letter-spacing:-1px;
  margin-bottom:10px;
}
.tl-card h3{
  font-size:20px;
  line-height:1.4;
  margin-bottom:10px;
  font-weight:600;
}
.tl-card p{font-size:15px;line-height:1.85;color:var(--t2);}
.tl-meta{
  display:flex;
  flex-wrap:wrap;
  gap:8px;
  margin-top:14px;
}
.chip{
  display:inline-block;
  font-size:12px;
  line-height:1;
  padding:6px 10px;
  border-radius:6px;
  background:rgba(31,182,232,.12);
  color:var(--brand);
  border:1px solid rgba(31,182,232,.22);
  letter-spacing:.4px;
}
.chip.warn{
  background:rgba(245,165,36,.12);
  color:var(--accent-hi);
  border-color:rgba(245,165,36,.3);
}

/* ---------- 警示面板 ---------- */
.alert-panel{
  margin-top:56px;
  position:relative;
  padding:26px 28px 26px 32px;
  background:rgba(255,255,255,.045);
  border:1px solid var(--line);
  border-left:3px solid var(--warn);
  border-radius:var(--r-md);
  backdrop-filter:blur(16px) saturate(140%);
  box-shadow:var(--sh-1);
}
.alert-panel h3{
  font-size:18px;
  margin-bottom:10px;
  display:flex;
  align-items:center;
  gap:10px;
}
.alert-panel h3 svg{width:18px;height:18px;stroke:var(--warn);}
.alert-panel p{font-size:15px;line-height:1.9;color:var(--t2);}

/* ---------- FAQ ---------- */
.faq-list{
  display:grid;
  gap:12px;
  margin-top:36px;
  max-width:900px;
}
.faq-item{
  background:rgba(255,255,255,.05);
  border:1px solid var(--line);
  border-radius:var(--r-md);
  backdrop-filter:blur(16px) saturate(140%);
  transition:border-color .22s var(--ease),background .22s var(--ease);
  overflow:hidden;
}
.faq-item:hover{border-color:var(--line-strong);background:rgba(255,255,255,.07);}
.faq-item.is-open{border-color:var(--line-accent);}
.faq-q{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:18px;
  width:100%;
  padding:20px 22px;
  background:none;
  border:0;
  text-align:left;
  color:var(--t1);
  font-size:16px;
  font-weight:600;
  line-height:1.6;
}
.faq-icon{
  flex:0 0 auto;
  width:22px;height:22px;
  position:relative;
  transition:transform .24s var(--ease);
}
.faq-icon::before,.faq-icon::after{
  content:"";
  position:absolute;
  background:var(--accent);
  border-radius:2px;
}
.faq-icon::before{left:0;top:10px;width:22px;height:2px;}
.faq-icon::after{left:10px;top:0;width:2px;height:22px;}
.faq-item.is-open .faq-icon{transform:rotate(45deg);}
.faq-a{
  max-height:0;
  overflow:hidden;
  transition:max-height .3s var(--ease);
}
.faq-a-inner{
  padding:0 22px 22px;
  font-size:15px;
  line-height:1.9;
  color:var(--t2);
  border-top:1px solid transparent;
}

/* ---------- 相关内容 ---------- */
.rel-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:24px;
}
.rel-card{
  display:flex;
  flex-direction:column;
  background:var(--bg-2);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  overflow:hidden;
  box-shadow:var(--sh-1);
  transition:border-color .25s var(--ease),transform .25s var(--ease),box-shadow .25s var(--ease);
}
.rel-card:hover{
  border-color:var(--line-accent);
  transform:translateY(-4px);
  box-shadow:var(--sh-glow-brand);
}
.rel-thumb{
  position:relative;
  aspect-ratio:16/9;
  overflow:hidden;
  background:linear-gradient(140deg,#0d1a26,#16232f);
}
.rel-thumb img{
  width:100%;height:100%;
  object-fit:cover;
  transition:transform .5s var(--ease);
}
.rel-card:hover .rel-thumb img{transform:scale(1.05);}
.rel-body{padding:22px 24px 24px;display:flex;flex-direction:column;gap:10px;flex:1;}
.rel-body h3{
  font-size:18px;
  line-height:1.45;
  font-weight:600;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.rel-body p{
  font-size:14px;
  line-height:1.8;
  color:var(--t3);
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.rel-foot{
  margin-top:auto;
  padding-top:12px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  font-size:13px;
  color:var(--t3);
}
.rel-foot svg{width:16px;height:16px;stroke:var(--brand);transition:transform .2s var(--ease);}
.rel-card:hover .rel-foot svg{transform:translateX(4px);}

/* ---------- 底部 CTA 条 ---------- */
.cta-bar{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  padding:30px 34px;
  border-radius:var(--r-xl);
  border:1px solid var(--line-accent);
  background:
    radial-gradient(70% 140% at 12% 0%, rgba(245,165,36,.16), transparent 62%),
    radial-gradient(70% 140% at 92% 100%, rgba(31,182,232,.18), transparent 66%),
    rgba(255,255,255,.05);
  backdrop-filter:blur(18px) saturate(140%);
  box-shadow:var(--sh-2);
}
.cta-bar h2{
  font-size:clamp(20px,2.2vw,26px);
  line-height:1.35;
  margin-bottom:6px;
}
.cta-bar p{font-size:14px;color:var(--t3);}

/* ---------- 页脚 ---------- */
.site-footer{
  position:relative;
  background:var(--bg-0);
  border-top:1px solid var(--line);
  padding:64px 0 28px;
  overflow:hidden;
}
.site-footer::before{
  content:"";
  position:absolute;
  top:-140px;left:50%;
  transform:translateX(-50%);
  width:900px;height:320px;
  background:radial-gradient(closest-side,rgba(31,182,232,.14),transparent 72%);
  pointer-events:none;
}
.site-footer .container{position:relative;z-index:2;}
.footer-grid{
  display:grid;
  grid-template-columns:4fr 2.4fr 2.4fr 3fr;
  gap:40px;
  padding-bottom:40px;
  border-bottom:1px solid var(--line);
}
.footer-brand .logo{margin-bottom:16px;height:30px;}
.footer-brand p{font-size:14px;line-height:1.85;color:var(--t3);max-width:340px;}
.footer-col h3,.footer-info h3{
  font-size:14px;
  color:var(--t1);
  font-weight:600;
  margin-bottom:16px;
  letter-spacing:.4px;
}
.footer-col ul{display:grid;gap:10px;}
.footer-col a{
  font-size:14px;
  color:var(--t3);
  transition:color .2s var(--ease);
}
.footer-col a:hover{color:var(--brand);}
.footer-info p{font-size:14px;line-height:1.85;color:var(--t3);}
.footer-bottom{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
  padding-top:24px;
  font-size:13px;
  color:var(--t3);
}
.footer-bottom .links{display:flex;gap:20px;}
.footer-bottom .links a{transition:color .2s var(--ease);}
.footer-bottom .links a:hover{color:var(--accent);}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .nav-links a{padding:10px 9px;font-size:14px;}
  .search-box{width:168px;}
  .header-inner{gap:18px;}
}
@media (max-width:991px){
  .nav-links{display:none;}
  .search-box{display:none;}
  .nav-toggle{display:inline-flex;}
  .mobile-drawer{display:block;}
  .header-inner{height:60px;}
  :root{--nav-h:60px;}
  .section{padding:72px 0;}
  .page-hero{padding:calc(var(--nav-h) + 44px) 0 48px;min-height:260px;}
  .timeline::before{left:8px;transform:none;}
  .tl-item{grid-template-columns:22px 1fr;gap:16px;align-items:flex-start;}
  .tl-dot-wrap{grid-column:1;justify-self:start;margin-top:8px;}
  .tl-item .tl-card,
  .tl-item.right .tl-card{grid-column:2;}
  .rel-grid{grid-template-columns:1fr 1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .cta-bar{flex-direction:column;align-items:flex-start;padding:26px 24px;}
}
@media (max-width:767px){
  .section{padding:56px 0;}
  .section-head{flex-direction:column;align-items:flex-start;gap:12px;margin-bottom:32px;}
  .hero-actions{flex-direction:column;align-items:stretch;}
  .hero-actions .btn{width:100%;}
  .rel-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:10px;}
  .tl-card{padding:20px;}
  .alert-panel{padding:22px 20px 22px 22px;}
  .faq-q{font-size:15px;padding:18px;}
  .faq-a-inner{padding:0 18px 18px;}
  .cta-bar{padding:24px 20px;border-radius:var(--r-lg);}
  .cta-bar .btn{width:100%;}
}
@media (max-width:480px){
  .logo-text{font-size:15px;}
  .logo-text em{font-size:11px;}
  .tl-num{font-size:26px;}
  .tl-card h3{font-size:18px;}
  .page-hero h1{font-size:28px;}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important;scroll-behavior:auto !important;}
}

/* roulang page: category3 */
:root{
  --bg-0:#060A11;
  --bg-1:#0B1119;
  --bg-2:#111A26;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.16);
  --line-accent:rgba(31,182,232,.35);
  --t1:#E8EEF6;
  --t2:#9EADBF;
  --t3:#6B7B8E;
  --t-inv:#060A11;
  --brand:#1FB6E8;
  --brand-deep:#0E7FB0;
  --brand-glow:rgba(31,182,232,.35);
  --accent:#F5A524;
  --accent-hi:#FFC24D;
  --accent-deep:#E8890B;
  --accent-glow:rgba(245,165,36,.38);
  --chrome:#C6D3E2;
  --ok:#35D08A;
  --warn:#F5A524;
  --err:#F2555A;
  --r-sm:10px;
  --r-md:14px;
  --r-lg:20px;
  --r-xl:26px;
  --r-pill:999px;
  --sh-1:0 8px 24px rgba(0,0,0,.35);
  --sh-2:0 20px 60px rgba(0,0,0,.5);
  --sh-glow-brand:0 0 0 1px rgba(31,182,232,.3),0 10px 30px rgba(31,182,232,.22);
  --sh-glow-accent:0 0 0 1px rgba(245,165,36,.4),0 12px 34px rgba(245,165,36,.3);
  --s-1:4px; --s-2:8px; --s-3:12px; --s-4:16px; --s-5:24px; --s-6:32px; --s-7:48px; --s-8:64px; --s-9:96px;
  --ease:cubic-bezier(.2,.7,.3,1);
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--t2);
  font-family:-apple-system,"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Microsoft YaHei",Inter,"Barlow",sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  background:
    radial-gradient(60% 40% at 78% 0%,rgba(31,182,232,.10),transparent 70%),
    radial-gradient(50% 36% at 8% 12%,rgba(245,165,36,.06),transparent 72%);
  z-index:0;
}
img{max-width:100%;display:block;border:0;}
a{color:var(--brand);text-decoration:none;transition:color .2s var(--ease);}
a:hover{color:var(--accent);}
h1,h2,h3,h4{margin:0;color:var(--t1);font-weight:700;letter-spacing:-.3px;}
h1{font-size:clamp(30px,4.2vw,46px);line-height:1.16;}
h2{font-size:clamp(24px,2.8vw,34px);line-height:1.26;}
h3{font-size:20px;line-height:1.4;font-weight:600;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
button{font-family:inherit;font-size:inherit;cursor:pointer;border:0;background:none;color:inherit;}
input,textarea,select{font-family:inherit;font-size:inherit;}
svg{display:block;}
:focus-visible{outline:2px solid rgba(31,182,232,.75);outline-offset:3px;}
.container{
  width:100%;
  max-width:1240px;
  margin:0 auto;
  padding:0 24px;
  position:relative;
  z-index:1;
}
@media (max-width:1199px){ .container{max-width:1140px;} }
@media (max-width:991px){ .container{max-width:960px;} }
@media (max-width:767px){ .container{max-width:100%;padding:0 18px;} }

/* ---------- 头部导航 ---------- */
.site-header{
  position:fixed;
  top:0;left:0;right:0;
  z-index:100;
  background:rgba(6,10,17,.35);
  backdrop-filter:blur(16px) saturate(140%);
  -webkit-backdrop-filter:blur(16px) saturate(140%);
  border-bottom:1px solid var(--line);
  transition:background .3s var(--ease),box-shadow .3s var(--ease),border-color .3s var(--ease);
}
.site-header.is-stuck{
  background:rgba(6,10,17,.9);
  box-shadow:var(--sh-1);
  border-bottom-color:var(--line-strong);
}
.header-inner{
  display:flex;
  align-items:center;
  gap:24px;
  height:72px;
}
.logo{
  display:inline-flex;
  align-items:center;
  gap:10px;
  flex:0 0 auto;
  color:var(--t1);
}
.logo-mark{
  width:30px;height:30px;
  filter:drop-shadow(0 0 6px rgba(245,165,36,.65));
  flex:0 0 auto;
}
.logo-text{
  font-size:17px;
  font-weight:700;
  letter-spacing:.4px;
  color:var(--t1);
  white-space:nowrap;
}
.logo-text em{
  font-style:normal;
  font-size:12px;
  font-weight:600;
  letter-spacing:1px;
  color:var(--accent);
  margin-left:6px;
  padding:2px 7px;
  border:1px solid rgba(245,165,36,.4);
  border-radius:var(--r-pill);
  vertical-align:middle;
}
.nav-links{
  display:flex;
  align-items:center;
  gap:6px;
  margin-right:auto;
}
.nav-links a{
  position:relative;
  display:inline-block;
  padding:8px 12px;
  font-size:15px;
  color:var(--t2);
  border-radius:var(--r-sm);
  transition:color .2s var(--ease),background .2s var(--ease);
  white-space:nowrap;
}
.nav-links a::after{
  content:"";
  position:absolute;
  left:12px;right:12px;bottom:2px;
  height:2px;
  border-radius:2px;
  background:linear-gradient(90deg,var(--accent-hi),var(--accent-deep));
  transform:scaleX(0);
  transform-origin:left;
  transition:transform .22s var(--ease);
}
.nav-links a:hover{color:var(--t1);background:rgba(255,255,255,.045);}
.nav-links a:hover::after,
.nav-links a[aria-current="page"]::after{transform:scaleX(1);}
.nav-links a[aria-current="page"]{color:var(--t1);}
.header-actions{display:flex;align-items:center;gap:12px;flex:0 0 auto;}
.nav-search{
  position:relative;
  display:flex;
  align-items:center;
  height:44px;
  width:220px;
  padding:0 14px 0 38px;
  background:rgba(255,255,255,.05);
  border:1px solid var(--line);
  border-radius:var(--r-pill);
  transition:border-color .22s var(--ease),box-shadow .22s var(--ease),background .22s var(--ease);
}
.nav-search svg{
  position:absolute;
  left:14px;top:50%;
  transform:translateY(-50%);
  width:16px;height:16px;
  stroke:var(--t3);
  fill:none;
  stroke-width:1.8;
}
.nav-search input{
  width:100%;
  border:0;
  background:transparent;
  color:var(--t1);
  font-size:14px;
  outline:none;
}
.nav-search input::placeholder{color:var(--t3);}
.nav-search:focus-within{
  border-color:var(--line-accent);
  background:rgba(255,255,255,.075);
  box-shadow:var(--sh-glow-brand);
}
.nav-toggle{
  display:none;
  width:44px;height:44px;
  align-items:center;
  justify-content:center;
  border:1px solid var(--line);
  border-radius:var(--r-sm);
  background:rgba(255,255,255,.05);
}
.nav-toggle span{
  display:block;
  width:18px;height:2px;
  background:var(--t1);
  border-radius:2px;
  position:relative;
  transition:background .2s var(--ease);
}
.nav-toggle span::before,
.nav-toggle span::after{
  content:"";
  position:absolute;left:0;
  width:18px;height:2px;
  background:var(--t1);
  border-radius:2px;
  transition:transform .22s var(--ease);
}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}
.nav-toggle[aria-expanded="true"] span{background:transparent;}
.nav-toggle[aria-expanded="true"] span::before{transform:translateY(6px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] span::after{transform:translateY(-6px) rotate(-45deg);}

.mobile-drawer{
  display:none;
  border-top:1px solid var(--line);
  background:rgba(6,10,17,.96);
  backdrop-filter:blur(20px) saturate(140%);
  -webkit-backdrop-filter:blur(20px) saturate(140%);
  padding:16px 18px 24px;
}
.mobile-drawer.is-open{display:block;}
.mobile-drawer .drawer-link{
  display:flex;
  align-items:center;
  justify-content:space-between;
  padding:14px 4px;
  font-size:18px;
  color:var(--t1);
  border-bottom:1px solid var(--line);
}
.mobile-drawer .drawer-link::after{
  content:"→";
  color:var(--accent);
  font-size:16px;
}
.mobile-drawer .drawer-cta{margin-top:18px;display:grid;gap:12px;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:44px;
  padding:0 26px;
  border-radius:var(--r-pill);
  font-size:15px;
  font-weight:600;
  letter-spacing:.2px;
  border:1px solid transparent;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease),border-color .2s var(--ease),color .2s var(--ease);
  white-space:nowrap;
}
.btn:active{transform:translateY(1px) scale(.997);}
.btn-primary{
  background:linear-gradient(120deg,var(--accent-hi),var(--accent-deep));
  color:var(--t-inv);
  box-shadow:var(--sh-glow-accent);
}
.btn-primary:hover{
  color:var(--t-inv);
  transform:translateY(-2px);
  box-shadow:0 0 0 1px rgba(245,165,36,.55),0 16px 42px rgba(245,165,36,.42);
  background:linear-gradient(140deg,var(--accent-hi),var(--accent-deep));
}
.btn-ghost{
  background:rgba(255,255,255,.04);
  border:1px solid var(--line-accent);
  color:var(--t1);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
}
.btn-ghost:hover{
  color:var(--t1);
  background:rgba(255,255,255,.09);
  border-color:var(--brand);
  transform:translateY(-2px);
}
.btn-sm{min-height:40px;padding:0 18px;font-size:14px;}
.btn-link{
  display:inline-flex;
  align-items:center;
  gap:6px;
  min-height:44px;
  color:var(--brand);
  font-size:14px;
  font-weight:600;
}
.btn-link span{transition:transform .2s var(--ease);}
.btn-link:hover{color:var(--accent);}
.btn-link:hover span{transform:translateX(4px);}
.btn[disabled],.btn.is-disabled{opacity:.45;cursor:not-allowed;pointer-events:none;}

/* ---------- 页头 ---------- */
.page-hero{
  position:relative;
  padding:calc(72px + 56px) 0 64px;
  background:
    linear-gradient(180deg,rgba(6,10,17,.62) 0%,rgba(6,10,17,.94) 100%),
    radial-gradient(60% 50% at 72% 18%,rgba(31,182,232,.18),transparent 70%),
    url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
  border-bottom:1px solid var(--line);
  overflow:hidden;
}
.page-hero::after{
  content:"";
  position:absolute;inset:0;
  pointer-events:none;
  background-image:linear-gradient(rgba(255,255,255,.045) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.045) 1px,transparent 1px);
  background-size:24px 24px;
  opacity:.5;
  mask-image:linear-gradient(180deg,rgba(0,0,0,.6),transparent 80%);
  -webkit-mask-image:linear-gradient(180deg,rgba(0,0,0,.6),transparent 80%);
}
.breadcrumb{
  display:flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  color:var(--t3);
  margin-bottom:22px;
  flex-wrap:wrap;
}
.breadcrumb a{color:var(--t3);}
.breadcrumb a:hover{color:var(--brand);}
.breadcrumb .sep{color:rgba(255,255,255,.2);}
.breadcrumb .current{color:var(--t2);}
.badge{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:6px 14px;
  border-radius:var(--r-pill);
  border:1px solid rgba(245,165,36,.42);
  background:rgba(245,165,36,.1);
  color:var(--accent-hi);
  font-size:12px;
  letter-spacing:.6px;
  font-weight:600;
  margin-bottom:18px;
}
.badge .dot{
  width:7px;height:7px;border-radius:50%;
  background:var(--accent);
  box-shadow:0 0 10px 2px rgba(245,165,36,.75);
}
.page-hero h1{max-width:820px;margin-bottom:18px;}
.page-hero .lead{
  max-width:720px;
  font-size:17px;
  line-height:1.85;
  color:var(--t2);
  margin-bottom:30px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;}
.hero-meta{
  display:flex;
  flex-wrap:wrap;
  gap:28px;
  margin-top:36px;
  padding-top:26px;
  border-top:1px solid var(--line);
}
.hero-meta .item{display:flex;flex-direction:column;gap:2px;}
.hero-meta .num{
  font-size:26px;
  font-weight:700;
  color:var(--accent);
  font-variant-numeric:tabular-nums;
  line-height:1.2;
}
.hero-meta .txt{font-size:13px;color:var(--t3);}

/* ---------- 板块 ---------- */
.section{padding:96px 0;position:relative;}
.section-alt{background:var(--bg-1);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.section-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:24px;
  margin-bottom:44px;
  flex-wrap:wrap;
}
.section-head h2{max-width:620px;}
.section-head .desc{
  max-width:520px;
  font-size:14px;
  color:var(--t3);
  line-height:1.8;
}
.section-head.col{display:block;}
.section-head.col .desc{margin-top:12px;}

/* ---------- 表格 ---------- */
.table-wrap{
  overflow-x:auto;
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  background:var(--bg-2);
  box-shadow:var(--sh-1);
}
table.spec{
  width:100%;
  min-width:640px;
  border-collapse:collapse;
  font-size:15px;
}
table.spec caption{
  caption-side:top;
  text-align:left;
  padding:20px 24px 0;
  color:var(--t3);
  font-size:13px;
}
table.spec thead th{
  background:rgba(255,255,255,.05);
  color:var(--t1);
  font-weight:600;
  text-align:left;
  padding:16px 24px;
  font-size:14px;
  letter-spacing:.4px;
  border-bottom:1px solid var(--line-strong);
}
table.spec tbody td{
  padding:18px 24px;
  border-top:1px solid var(--line);
  vertical-align:top;
  line-height:1.8;
}
table.spec tbody tr:first-child td{border-top:0;}
table.spec tbody td:first-child{
  width:40%;
  color:var(--t2);
  font-weight:600;
}
table.spec tbody td:last-child{color:var(--t1);}
table.spec tbody tr:hover{background:rgba(31,182,232,.05);}

/* ---------- 能力卡 ---------- */
.cap-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:24px;
}
.cap-card{
  padding:26px 24px;
  border-radius:var(--r-lg);
  border:1px solid var(--line);
  background:rgba(255,255,255,.055);
  backdrop-filter:blur(18px) saturate(140%);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  box-shadow:var(--sh-1),inset 0 1px 0 rgba(255,255,255,.06);
  transition:transform .25s var(--ease),border-color .25s var(--ease),box-shadow .25s var(--ease);
}
.cap-card:hover{
  transform:translateY(-4px);
  border-color:var(--line-accent);
  box-shadow:var(--sh-glow-brand);
}
.cap-icon{
  width:46px;height:46px;
  border-radius:50%;
  display:flex;
  align-items:center;
  justify-content:center;
  border:1px solid rgba(31,182,232,.4);
  background:rgba(31,182,232,.1);
  margin-bottom:18px;
}
.cap-icon svg{width:22px;height:22px;stroke:var(--brand);fill:none;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round;}
.cap-card h3{font-size:18px;margin-bottom:10px;}
.cap-card p{font-size:14.5px;line-height:1.85;color:var(--t2);}

/* ---------- 自检条 ---------- */
.check-strip{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:0;
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  background:linear-gradient(120deg,rgba(31,182,232,.08),rgba(245,165,36,.05));
  box-shadow:var(--sh-1);
  overflow:hidden;
}
.check-strip .cell{
  padding:28px 26px;
  border-left:1px solid var(--line);
}
.check-strip .cell:first-child{border-left:0;}
.check-strip .idx{
  display:inline-block;
  font-size:13px;
  font-weight:700;
  letter-spacing:1px;
  color:var(--accent);
  font-variant-numeric:tabular-nums;
  margin-bottom:10px;
}
.check-strip h3{font-size:17px;margin-bottom:8px;}
.check-strip p{font-size:14px;color:var(--t2);line-height:1.8;}

/* ---------- 现象列表 ---------- */
.symptom-list{
  border-top:1px solid var(--line);
}
.symptom-item{
  display:grid;
  grid-template-columns:180px 1fr 40px;
  gap:24px;
  align-items:center;
  padding:22px 4px;
  border-bottom:1px solid var(--line);
  transition:background .22s var(--ease),padding-left .22s var(--ease);
}
.symptom-item:hover{background:rgba(255,255,255,.035);padding-left:14px;}
.symptom-item .label{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:14px;
  font-weight:600;
  color:var(--accent-hi);
}
.symptom-item .label::before{
  content:"";
  width:8px;height:8px;
  border-radius:50%;
  background:var(--warn);
  box-shadow:0 0 10px 2px rgba(245,165,36,.55);
}
.symptom-item p{font-size:15px;color:var(--t2);line-height:1.8;}
.symptom-item .arrow{
  color:var(--t3);
  font-size:18px;
  text-align:right;
  transition:transform .22s var(--ease),color .22s var(--ease);
}
.symptom-item:hover .arrow{color:var(--accent);transform:translateX(4px);}

/* ---------- 横向 CTA ---------- */
.cta-band{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:32px;
  padding:36px 40px;
  border-radius:var(--r-xl);
  border:1px solid var(--line-strong);
  background:
    radial-gradient(70% 130% at 100% 0%,rgba(245,165,36,.16),transparent 70%),
    radial-gradient(60% 130% at 0% 100%,rgba(31,182,232,.16),transparent 70%),
    rgba(255,255,255,.055);
  backdrop-filter:blur(18px) saturate(140%);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  box-shadow:var(--sh-2),inset 0 1px 0 rgba(255,255,255,.08);
}
.cta-band h2{font-size:clamp(20px,2.2vw,26px);margin-bottom:8px;}
.cta-band p{font-size:14.5px;color:var(--t2);max-width:560px;}
.cta-band .actions{display:flex;gap:12px;flex:0 0 auto;flex-wrap:wrap;}

/* ---------- 推荐卡 ---------- */
.rec-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:24px;
}
.rec-card{
  display:flex;
  flex-direction:column;
  border-radius:var(--r-lg);
  overflow:hidden;
  border:1px solid var(--line);
  background:var(--bg-2);
  box-shadow:var(--sh-1);
  transition:transform .25s var(--ease),border-color .25s var(--ease),box-shadow .25s var(--ease);
}
.rec-card:hover{
  transform:translateY(-4px);
  border-color:var(--line-accent);
  box-shadow:var(--sh-glow-brand);
}
.rec-card .thumb{
  position:relative;
  aspect-ratio:16/9;
  overflow:hidden;
  background:var(--bg-1);
}
.rec-card .thumb img{
  width:100%;height:100%;
  object-fit:cover;
  transition:transform .4s var(--ease);
}
.rec-card:hover .thumb img{transform:scale(1.05);}
.rec-card .thumb::after{
  content:"";
  position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(6,10,17,.05),rgba(6,10,17,.72));
}
.rec-body{padding:22px 22px 24px;display:flex;flex-direction:column;gap:10px;flex:1;}
.rec-body h3{font-size:18px;line-height:1.45;}
.rec-body p{font-size:14px;color:var(--t2);line-height:1.8;}
.rec-body .more{
  margin-top:auto;
  padding-top:6px;
  font-size:13px;
  font-weight:600;
  color:var(--accent);
  display:inline-flex;
  align-items:center;
  gap:6px;
}

/* ---------- 页脚 ---------- */
.site-footer{
  position:relative;
  background:var(--bg-0);
  border-top:1px solid var(--line);
  padding:72px 0 32px;
  margin-top:0;
}
.site-footer::before{
  content:"";
  position:absolute;
  top:0;left:50%;
  transform:translateX(-50%);
  width:min(900px,90%);
  height:1px;
  background:radial-gradient(50% 100% at 50% 0%,rgba(31,182,232,.45),transparent 75%);
}
.footer-grid{
  display:grid;
  grid-template-columns:4fr 2.5fr 2.5fr 3fr;
  gap:40px;
  padding-bottom:48px;
}
.footer-brand .logo{margin-bottom:16px;}
.footer-brand p{font-size:14px;line-height:1.85;color:var(--t3);max-width:340px;}
.footer-col h3,.footer-info h3{
  font-size:14px;
  color:var(--t1);
  font-weight:600;
  margin-bottom:16px;
  letter-spacing:.4px;
}
.footer-col ul{display:grid;gap:10px;}
.footer-col a{font-size:14px;color:var(--t3);}
.footer-col a:hover{color:var(--brand);}
.footer-info p{font-size:14px;color:var(--t3);line-height:1.85;}
.footer-bottom{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  padding-top:24px;
  border-top:1px solid var(--line);
  font-size:13px;
  color:var(--t3);
  flex-wrap:wrap;
}
.footer-bottom .links{display:flex;gap:18px;}
.footer-bottom .links a{font-size:13px;color:var(--t3);}
.footer-bottom .links a:hover{color:var(--brand);}

/* ---------- 吸底转化条 ---------- */
.sticky-cta{
  position:fixed;
  left:0;right:0;bottom:0;
  z-index:90;
  height:64px;
  display:flex;
  align-items:center;
  background:rgba(6,10,17,.86);
  backdrop-filter:blur(18px) saturate(140%);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  border-top:1px solid var(--line);
  box-shadow:var(--sh-2);
  transform:translateY(110%);
  opacity:0;
  transition:transform .3s var(--ease),opacity .3s var(--ease);
}
.sticky-cta.is-visible{transform:translateY(0);opacity:1;}
.sticky-cta .inner{
  width:100%;
  max-width:1240px;
  margin:0 auto;
  padding:0 24px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:18px;
}
.sticky-cta .hint{
  display:flex;
  align-items:center;
  gap:10px;
  font-size:15px;
  color:var(--t1);
}
.sticky-cta .hint .dot{
  width:8px;height:8px;border-radius:50%;
  background:var(--ok);
  box-shadow:0 0 10px 2px rgba(53,208,138,.6);
  flex:0 0 auto;
}
.sticky-cta .actions{display:flex;align-items:center;gap:10px;}
body{padding-bottom:64px;}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .nav-search{width:180px;}
  .nav-links a{padding:8px 9px;font-size:14px;}
}
@media (max-width:991px){
  .nav-links,.nav-search{display:none;}
  .nav-toggle{display:flex;}
  .header-inner{height:60px;gap:12px;}
  .logo-text{font-size:16px;}
  .page-hero{padding:calc(60px + 40px) 0 48px;}
  .section{padding:72px 0;}
  .cap-grid{grid-template-columns:repeat(2,1fr);}
  .check-strip{grid-template-columns:1fr;}
  .check-strip .cell{border-left:0;border-top:1px solid var(--line);}
  .check-strip .cell:first-child{border-top:0;}
  .rec-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .cta-band{flex-direction:column;align-items:flex-start;padding:30px 26px;}
  .symptom-item{grid-template-columns:150px 1fr 32px;gap:16px;}
}
@media (max-width:767px){
  .page-hero h1{font-size:clamp(26px,7.4vw,34px);}
  .page-hero .lead{font-size:15.5px;}
  .hero-actions .btn{width:100%;}
  .hero-meta{gap:20px;}
  .hero-meta .num{font-size:22px;}
  .section{padding:56px 0;}
  .section-head{margin-bottom:30px;}
  .cap-grid{grid-template-columns:1fr;gap:16px;}
  .cap-card{padding:22px 20px;}
  .rec-grid{grid-template-columns:1fr;}
  .symptom-item{grid-template-columns:1fr;gap:8px;}
  .symptom-item .arrow{display:none;}
  .cta-band .actions{width:100%;}
  .cta-band .actions .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;gap:30px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .sticky-cta{height:56px;}
  body{padding-bottom:56px;}
  .sticky-cta .inner{padding:0 18px;}
  .sticky-cta .hint{font-size:13.5px;}
  .sticky-cta .btn{padding:0 16px;font-size:13.5px;min-height:38px;}
}
@media (max-width:480px){
  .sticky-cta .actions .btn-ghost{display:none;}
  .sticky-cta .hint{font-size:13px;}
  .logo-text em{display:none;}
  .hero-meta{flex-direction:column;gap:14px;}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
    scroll-behavior:auto !important;
  }
}

/* roulang page: category4 */
:root{
  --bg-0:#060A11;
  --bg-1:#0B1119;
  --bg-2:#111A26;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.16);
  --line-accent:rgba(31,182,232,.35);
  --t1:#E8EEF6;
  --t2:#9EADBF;
  --t3:#6B7B8E;
  --t-inv:#060A11;
  --brand:#1FB6E8;
  --brand-deep:#0E7FB0;
  --brand-glow:rgba(31,182,232,.35);
  --accent:#F5A524;
  --accent-hi:#FFC24D;
  --accent-deep:#E8890B;
  --accent-glow:rgba(245,165,36,.38);
  --chrome:#C6D3E2;
  --ok:#35D08A;
  --warn:#F5A524;
  --err:#F2555A;
  --r-sm:10px;
  --r-md:14px;
  --r-lg:20px;
  --r-xl:26px;
  --r-pill:999px;
  --sh-1:0 8px 24px rgba(0,0,0,.35);
  --sh-2:0 20px 60px rgba(0,0,0,.5);
  --sh-glow-brand:0 0 0 1px rgba(31,182,232,.3),0 10px 30px rgba(31,182,232,.22);
  --sh-glow-accent:0 0 0 1px rgba(245,165,36,.4),0 12px 34px rgba(245,165,36,.3);
  --ease:cubic-bezier(.2,.7,.3,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--t2);
  font-family:-apple-system,"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Microsoft YaHei","Inter","Barlow",sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
  overflow-x:hidden;
}
h1,h2,h3,h4{margin:0;color:var(--t1);font-weight:700;letter-spacing:-.2px}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
input,textarea{font:inherit}
svg{display:block}
:focus-visible{outline:2px solid rgba(31,182,232,.75);outline-offset:3px;border-radius:6px}
.container{width:100%;max-width:1240px;margin:0 auto;padding:0 24px}
@media(max-width:1439px){.container{max-width:1140px}}
@media(max-width:1199px){.container{max-width:960px}}
@media(max-width:991px){.container{max-width:100%;padding:0 24px}}
@media(max-width:767px){.container{padding:0 18px}}

/* ---------- header ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:100;
  background:rgba(6,10,17,.35);
  -webkit-backdrop-filter:blur(16px) saturate(140%);
  backdrop-filter:blur(16px) saturate(140%);
  border-bottom:1px solid var(--line);
  transition:background .3s var(--ease),box-shadow .3s var(--ease),border-color .3s var(--ease);
}
.site-header.is-stuck{
  background:rgba(6,10,17,.9);
  box-shadow:var(--sh-1);
  border-bottom-color:var(--line-strong);
}
.nav-inner{display:flex;align-items:center;gap:26px;height:72px}
.logo{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto}
.logo-mark{width:30px;height:30px;filter:drop-shadow(0 0 7px rgba(245,165,36,.5))}
.logo-text{font-size:17px;font-weight:700;color:var(--t1);white-space:nowrap;letter-spacing:.2px}
.logo-text em{font-style:normal;color:var(--accent);margin-left:6px;font-size:13px;font-weight:600}
.nav-links{display:flex;align-items:center;gap:22px;margin-left:8px}
.nav-links a{position:relative;font-size:15px;color:var(--t2);padding:6px 2px;transition:color .2s var(--ease);white-space:nowrap}
.nav-links a::after{
  content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;
  background:var(--accent);border-radius:2px;transform:scaleX(0);transform-origin:left;
  transition:transform .22s var(--ease);
}
.nav-links a:hover{color:var(--t1)}
.nav-links a:hover::after,.nav-links a[aria-current="page"]::after{transform:scaleX(1)}
.nav-links a[aria-current="page"]{color:var(--t1)}
.nav-tools{display:flex;align-items:center;gap:14px;margin-left:auto}
.nav-search{
  display:flex;align-items:center;gap:8px;height:44px;padding:0 16px;
  border-radius:var(--r-pill);background:rgba(255,255,255,.05);
  border:1px solid var(--line);transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.nav-search:focus-within{border-color:var(--line-accent);box-shadow:var(--sh-glow-brand)}
.nav-search svg{width:16px;height:16px;stroke:var(--t3);fill:none;stroke-width:2;flex:0 0 16px}
.nav-search input{width:132px;background:none;border:0;outline:none;color:var(--t1);font-size:14px;line-height:1}
.nav-search input::placeholder{color:var(--t3)}
.nav-toggle{
  display:none;align-items:center;justify-content:center;
  width:44px;height:44px;border-radius:var(--r-sm);
  border:1px solid var(--line);background:rgba(255,255,255,.05);
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--t1);border-radius:2px;position:relative;transition:background .2s}
.nav-toggle span::before,.nav-toggle span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:var(--t1);border-radius:2px;transition:transform .2s var(--ease)}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}
.nav-drawer{
  position:fixed;top:60px;left:0;right:0;bottom:0;z-index:99;
  display:none;flex-direction:column;gap:4px;
  padding:20px 18px 44px;overflow-y:auto;
  background:rgba(6,10,17,.96);
  -webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px);
  border-top:1px solid var(--line);
}
.nav-drawer.open{display:flex}
.nav-drawer a{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding:16px 6px;font-size:18px;color:var(--t1);border-bottom:1px solid var(--line);
}
.nav-drawer a span{color:var(--t3);font-size:16px}
.nav-drawer .drawer-actions{display:grid;gap:12px;margin-top:22px}
body.drawer-open{overflow:hidden}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 26px;border-radius:var(--r-pill);
  font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease),border-color .2s var(--ease),color .2s var(--ease);
}
.btn:active{transform:translateY(1px) scale(.995)}
.btn-primary{background:linear-gradient(135deg,var(--accent-hi),var(--accent-deep));color:var(--t-inv);box-shadow:var(--sh-glow-accent)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 0 0 1px rgba(245,165,36,.55),0 16px 40px rgba(245,165,36,.45)}
.btn-glass{background:rgba(255,255,255,.055);border-color:var(--line-accent);color:var(--t1);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px)}
.btn-glass:hover{background:rgba(255,255,255,.1);transform:translateY(-2px);box-shadow:var(--sh-glow-brand)}
.btn-sm{min-height:38px;padding:0 18px;font-size:14px}
.btn-ghost{color:var(--t1);padding:0 4px;min-height:auto;font-weight:600}
.btn-ghost .arrow{transition:transform .2s var(--ease);display:inline-block}
.btn-ghost:hover .arrow{transform:translateX(4px)}

/* ---------- page head ---------- */
.page-head{
  position:relative;
  padding:calc(72px + 84px) 0 72px;
  background-image:
    linear-gradient(180deg,rgba(6,10,17,.35) 0%,rgba(6,10,17,.9) 100%),
    radial-gradient(62% 52% at 72% 16%,rgba(31,182,232,.18),transparent 72%),
    url("/assets/images/backpic/back-2.webp");
  background-size:cover,cover,cover;
  background-position:center,center,center;
  border-bottom:1px solid var(--line);
}
.page-head::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(255,255,255,.035) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.035) 1px,transparent 1px);
  background-size:24px 24px;
  opacity:.6;
  mask-image:linear-gradient(180deg,rgba(0,0,0,.9),transparent 88%);
  -webkit-mask-image:linear-gradient(180deg,rgba(0,0,0,.9),transparent 88%);
}
.page-head .container{position:relative;z-index:2}
.breadcrumb{display:flex;align-items:center;gap:8px;flex-wrap:wrap;font-size:13px;color:var(--t3);margin-bottom:20px}
.breadcrumb a{color:var(--t3);transition:color .2s}
.breadcrumb a:hover{color:var(--brand)}
.breadcrumb .sep{color:rgba(255,255,255,.22)}
.breadcrumb .current{color:var(--t2)}
.badge{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:var(--r-pill);
  font-size:12px;letter-spacing:.5px;color:var(--accent);
  background:rgba(245,165,36,.12);border:1px solid rgba(245,165,36,.35);
  margin-bottom:18px;
}
.badge i{width:6px;height:6px;border-radius:50%;background:var(--accent);box-shadow:0 0 8px var(--accent);display:inline-block}
.page-head h1{font-size:clamp(30px,3.6vw,44px);line-height:1.2;letter-spacing:-.5px}
.page-head .lead{margin-top:16px;font-size:16px;line-height:1.9;color:var(--t2);max-width:760px}
.head-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px}
@media(max-width:767px){
  .page-head{padding:calc(60px + 56px) 0 52px}
  .head-actions .btn{width:100%}
}

/* ---------- sections ---------- */
.section{padding:96px 0}
.section-alt{background:var(--bg-1)}
@media(max-width:1199px){.section{padding:72px 0}}
@media(max-width:767px){.section{padding:56px 0}}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;flex-wrap:wrap;margin-bottom:36px}
.section-head h2{font-size:clamp(26px,3vw,38px);line-height:1.25}
.section-head .note{font-size:13px;color:var(--t3);max-width:420px;line-height:1.8}
@media(max-width:767px){.section-head{margin-bottom:26px}}

/* ---------- intro ---------- */
.intro-quote{
  font-size:clamp(20px,2.4vw,27px);line-height:1.65;color:var(--t1);font-weight:600;
  max-width:880px;letter-spacing:-.2px;margin-bottom:14px;
}
.intro-note{font-size:14px;color:var(--t3);max-width:760px;line-height:1.9}

/* ---------- faq ---------- */
.faq-group{margin-top:52px}
.faq-group:first-of-type{margin-top:40px}
.faq-group-title{font-size:20px;line-height:1.4;font-weight:600;display:flex;align-items:center;gap:12px}
.faq-group-title::before{content:"";width:3px;height:20px;border-radius:2px;background:linear-gradient(180deg,var(--accent-hi),var(--accent-deep))}
.faq-group-note{margin:10px 0 22px 15px;font-size:13px;color:var(--t3);line-height:1.8;max-width:720px}
.faq-list{display:grid;gap:12px}
.faq-item{
  background:rgba(255,255,255,.055);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  backdrop-filter:blur(18px) saturate(140%);
  border:1px solid var(--line);
  border-radius:var(--r-md);
  box-shadow:var(--sh-1);
  transition:border-color .22s var(--ease),background .22s var(--ease),box-shadow .22s var(--ease);
}
.faq-item:hover{border-color:var(--line-strong);background:rgba(255,255,255,.075)}
.faq-item[open]{border-color:var(--line-accent);box-shadow:var(--sh-glow-brand)}
.faq-item summary{
  display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:18px 22px;font-size:16px;font-weight:600;color:var(--t1);
  cursor:pointer;list-style:none;line-height:1.6;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-icon{position:relative;width:18px;height:18px;flex:0 0 18px}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;background:var(--accent);border-radius:2px;
  transition:transform .24s var(--ease),opacity .24s var(--ease);
}
.faq-icon::before{left:0;right:0;top:8px;height:2px}
.faq-icon::after{top:0;bottom:0;left:8px;width:2px}
.faq-item[open] .faq-icon::after{transform:rotate(90deg);opacity:0}
.faq-item[open] .faq-icon::before{transform:rotate(180deg)}
.faq-a{padding:0 22px 20px;font-size:15px;line-height:1.9;color:var(--t2);border-top:1px solid var(--line);padding-top:14px;margin-top:2px}
@media(max-width:767px){
  .faq-item summary{padding:16px 16px;font-size:15px}
  .faq-a{padding:12px 16px 18px;font-size:14.5px}
}

/* ---------- glass cta card ---------- */
.cta-card{
  display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap;
  margin:44px 0 8px;padding:28px 32px;border-radius:var(--r-lg);
  background:
    linear-gradient(120deg,rgba(245,165,36,.13),rgba(31,182,232,.1)),
    rgba(255,255,255,.055);
  border:1px solid var(--line-accent);
  box-shadow:var(--sh-2);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  backdrop-filter:blur(18px) saturate(140%);
}
.cta-card h3{font-size:20px;line-height:1.4;margin-bottom:8px}
.cta-card p{font-size:14px;color:var(--t2);line-height:1.85;max-width:620px}
.cta-card .btn{flex:0 0 auto}
@media(max-width:767px){
  .cta-card{padding:22px 20px}
  .cta-card .btn{width:100%}
}

/* ---------- notice list ---------- */
.notice-list{border-top:1px solid var(--line)}
.notice-item{
  display:grid;grid-template-columns:104px 1fr auto;align-items:center;gap:22px;
  padding:22px 6px;border-bottom:1px solid var(--line);
  transition:background .22s var(--ease),padding-left .22s var(--ease);
}
.notice-item:hover{background:rgba(255,255,255,.03);padding-left:12px}
.notice-date{font-size:13px;color:var(--t3);font-variant-numeric:tabular-nums;letter-spacing:.4px}
.notice-body{display:flex;align-items:center;gap:12px;flex-wrap:wrap}
.notice-tag{
  display:inline-block;font-size:12px;letter-spacing:.5px;color:var(--accent);
  background:rgba(245,165,36,.12);border-radius:6px;padding:2px 8px;line-height:1.7;
}
.notice-title{font-size:16px;font-weight:600;color:var(--t1);line-height:1.6}
.notice-desc{font-size:13.5px;color:var(--t3);line-height:1.8;margin-top:6px}
.notice-arrow{color:var(--t3);font-size:18px;transition:transform .22s var(--ease),color .22s var(--ease)}
.notice-item:hover .notice-arrow{transform:translateX(4px);color:var(--accent)}
@media(max-width:767px){
  .notice-item{grid-template-columns:1fr auto;gap:10px 14px;padding:18px 4px}
  .notice-date{grid-column:1 / -1;font-size:12.5px}
}

/* ---------- related cards ---------- */
.rel-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.rel-card{
  display:flex;flex-direction:column;overflow:hidden;
  background:var(--bg-2);border:1px solid var(--line);border-radius:var(--r-lg);
  box-shadow:var(--sh-1);
  transition:transform .25s var(--ease),border-color .25s var(--ease),box-shadow .25s var(--ease);
}
.rel-card:hover{transform:translateY(-4px);border-color:var(--line-accent);box-shadow:var(--sh-glow-brand)}
.rel-card .thumb{position:relative;aspect-ratio:16/9;overflow:hidden;background:var(--bg-1)}
.rel-card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s var(--ease)}
.rel-card:hover .thumb img{transform:scale(1.04)}
.rel-card .body{padding:22px 24px 24px;display:flex;flex-direction:column;gap:10px;flex:1}
.rel-card h3{font-size:18px;line-height:1.45}
.rel-card p{font-size:14px;color:var(--t3);line-height:1.85;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.rel-card .more{margin-top:auto;font-size:14px;font-weight:600;color:var(--brand);display:inline-flex;align-items:center;gap:6px}
.rel-card:hover .more .arrow{transform:translateX(4px)}
.rel-card .more .arrow{transition:transform .22s var(--ease);display:inline-block}
@media(max-width:991px){.rel-grid{grid-template-columns:1fr 1fr}}
@media(max-width:767px){.rel-grid{grid-template-columns:1fr}}

/* ---------- bottom cta ---------- */
.bottom-cta{
  display:flex;align-items:center;justify-content:space-between;gap:26px;flex-wrap:wrap;
  padding:34px 38px;border-radius:var(--r-xl);
  background:
    radial-gradient(70% 120% at 8% 0%,rgba(245,165,36,.14),transparent 62%),
    radial-gradient(60% 120% at 92% 100%,rgba(31,182,232,.16),transparent 60%),
    rgba(255,255,255,.055);
  border:1px solid var(--line);
  box-shadow:var(--sh-2);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  backdrop-filter:blur(18px) saturate(140%);
}
.bottom-cta h2{font-size:clamp(22px,2.4vw,28px);line-height:1.35;margin-bottom:10px}
.bottom-cta p{font-size:14.5px;color:var(--t2);max-width:600px;line-height:1.85}
.bottom-cta .actions{display:flex;gap:14px;flex-wrap:wrap}
@media(max-width:767px){
  .bottom-cta{padding:24px 20px}
  .bottom-cta .actions{width:100%}
  .bottom-cta .actions .btn{width:100%}
}

/* ---------- footer ---------- */
.site-footer{
  position:relative;background:var(--bg-0);border-top:1px solid var(--line);
  padding:64px 0 28px;margin-top:96px;overflow:hidden;
}
.site-footer::before{
  content:"";position:absolute;top:0;left:0;right:0;height:220px;pointer-events:none;
  background:radial-gradient(60% 100% at 50% 0%,rgba(31,182,232,.1),transparent 70%);
}
.footer-grid{position:relative;display:grid;grid-template-columns:repeat(12,1fr);gap:24px}
.footer-brand{grid-column:span 4}
.footer-brand p{margin-top:16px;font-size:14px;line-height:1.85;color:var(--t3);max-width:330px}
.footer-col{grid-column:span 2}
.footer-info{grid-column:span 4}
.footer-col h3,.footer-info h3{font-size:14px;font-weight:600;color:var(--t1);margin-bottom:14px}
.footer-col ul{display:grid;gap:10px}
.footer-col a{font-size:14px;color:var(--t3);transition:color .2s var(--ease)}
.footer-col a:hover{color:var(--brand)}
.footer-info p{font-size:13.5px;line-height:1.85;color:var(--t3)}
.footer-bottom{
  position:relative;display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  margin-top:44px;padding-top:20px;border-top:1px solid var(--line);
  font-size:13px;color:var(--t3);
}
.footer-bottom .links{display:flex;gap:20px}
.footer-bottom a{color:var(--t3);transition:color .2s var(--ease)}
.footer-bottom a:hover{color:var(--brand)}
@media(max-width:991px){
  .footer-brand{grid-column:span 12}
  .footer-col{grid-column:span 6}
  .footer-info{grid-column:span 12}
}
@media(max-width:600px){
  .footer-col{grid-column:span 12}
  .site-footer{margin-top:64px;padding-top:48px}
}

@media(max-width:1199px){.nav-search{display:none}}
@media(max-width:991px){
  .nav-links{display:none}
  .nav-toggle{display:inline-flex}
  .nav-inner{height:60px}
}
@media(max-width:480px){
  .logo-text{font-size:15px}
  .logo-text em{font-size:12px}
  .nav-tools .btn-primary{display:none}
}
@media(prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms!important;transition-duration:.001ms!important;scroll-behavior:auto!important}
}