/* roulang page: index */
:root{
--bg-0:#070B14;--bg-1:#0B1222;--bg-2:#101A30;--primary:#2F6BFF;--primary-strong:#4C86FF;--primary-deep:#1A3E9E;
--volt:#C6F24E;--amber:#FFAA2B;--text-0:#F2F6FF;--text-1:#C6D0E8;--text-2:#8A94B3;--text-3:#5A6485;
--border:rgba(255,255,255,.08);--border-strong:rgba(255,255,255,.14);--glass-bg:rgba(255,255,255,.05);
--glass-border:rgba(255,255,255,.10);--radius-sm:8px;--radius:12px;--radius-md:16px;--radius-lg:24px;
--shadow:0 8px 32px rgba(0,0,0,.25);--shadow-lg:0 16px 48px rgba(0,0,0,.35);
--glow-primary:0 0 24px rgba(47,107,255,.45);--glow-volt:0 0 24px rgba(198,242,78,.30);
--tr:.25s ease;--sidebar-w:240px;--sidebar-collapsed:88px;--container-max:1160px;
--font-cn:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",sans-serif;
--font-num:'Rajdhani',-apple-system,BlinkMacSystemFont,"PingFang SC",sans-serif;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{font-family:var(--font-cn);background:var(--bg-0);color:var(--text-0);line-height:1.8;font-size:16px;padding-left:var(--sidebar-w);overflow-x:hidden}
img{max-width:100%;display:block}
a{color:var(--primary-strong);text-decoration:none;transition:color var(--tr)}
a:hover{color:var(--primary-strong)}
ul,ol{list-style:none}
button,input,select,textarea{font-family:inherit;font-size:inherit;color:inherit;background:none;border:none;outline:none}
button{cursor:pointer}
.container{max-width:var(--container-max);margin:0 auto;padding:0 32px}
.section{padding:96px 0;position:relative}
.section-head{display:flex;justify-content:space-between;align-items:flex-end;gap:32px;margin-bottom:48px;flex-wrap:wrap}
.section-tag{display:inline-block;font-size:13px;letter-spacing:.08em;color:var(--volt);background:rgba(198,242,78,.08);border:1px solid rgba(198,242,78,.25);padding:4px 14px;border-radius:100px;margin-bottom:12px;text-transform:uppercase;font-weight:600}
.section-head h2{font-size:clamp(26px,3vw,36px);font-weight:700;line-height:1.3;letter-spacing:.02em}
.section-sub{color:var(--text-2);font-size:15px;max-width:460px}
.section-divider{height:1px;background:linear-gradient(90deg,transparent,rgba(47,107,255,.6),transparent);border:none;margin:0}
a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{outline:2px solid var(--primary);outline-offset:3px;border-radius:4px}
/* Buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:13px 28px;border-radius:var(--radius);font-weight:600;font-size:15px;line-height:1;transition:all var(--tr);position:relative;border:1px solid transparent;letter-spacing:.02em;white-space:nowrap}
.btn-primary{background:linear-gradient(135deg,var(--primary),var(--primary-deep));color:#fff;box-shadow:0 0 20px rgba(47,107,255,.35)}
.btn-primary:hover{background:linear-gradient(135deg,var(--primary-strong),var(--primary));box-shadow:0 0 30px rgba(47,107,255,.55);color:#fff;transform:translateY(-2px)}
.btn-primary:active{transform:translateY(1px);box-shadow:0 0 12px rgba(47,107,255,.3)}
.btn-ghost{background:rgba(255,255,255,.05);color:var(--text-0);border:1px solid var(--glass-border);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px)}
.btn-ghost:hover{background:rgba(255,255,255,.12);border-color:rgba(198,242,78,.35);color:var(--volt);transform:translateY(-2px)}
.btn-ghost:active{transform:translateY(1px)}
.btn-volt{background:var(--volt);color:#0A0F1E;box-shadow:0 0 24px rgba(198,242,78,.3);font-weight:700}
.btn-volt:hover{background:#d4ff5c;color:#0A0F1E;box-shadow:0 0 32px rgba(198,242,78,.5);transform:translateY(-2px)}
.btn-volt:active{transform:translateY(1px);box-shadow:0 0 12px rgba(198,242,78,.25)}
.btn-block{width:100%}
/* Badge */
.badge{display:inline-block;padding:3px 12px;border-radius:100px;font-size:12px;font-weight:600;color:var(--volt);border:1px solid rgba(198,242,78,.3);background:rgba(198,242,78,.06);letter-spacing:.04em}
.badge-small{padding:2px 10px;font-size:11px}
.badge-amber{color:var(--amber);border-color:rgba(255,170,43,.3);background:rgba(255,170,43,.06)}
.badge-blue{color:var(--primary-strong);border-color:rgba(47,107,255,.3);background:rgba(47,107,255,.08)}
/* ===== Sidebar ===== */
.sidebar{position:fixed;left:0;top:0;bottom:0;width:var(--sidebar-w);background:var(--bg-1);border-right:1px solid var(--border);z-index:1000;display:flex;flex-direction:column;transition:width .3s ease}
.brand{padding:28px 20px 20px;border-bottom:1px solid var(--border)}
.brand-link{display:flex;align-items:center;gap:12px;color:var(--text-0)}
.brand-link:hover{color:var(--text-0)}
.logo-mark{width:44px;height:44px;border-radius:12px;background:linear-gradient(135deg,var(--primary),var(--primary-deep));display:flex;align-items:center;justify-content:center;font-family:var(--font-num);font-weight:700;font-size:17px;letter-spacing:.04em;color:#fff;flex-shrink:0;box-shadow:0 0 18px rgba(47,107,255,.4)}
.brand-text{display:flex;flex-direction:column;line-height:1.2;overflow:hidden;transition:opacity .2s ease}
.brand-name{font-size:16px;font-weight:700;letter-spacing:.02em;color:var(--text-0);white-space:nowrap}
.brand-en{font-family:var(--font-num);font-size:11px;color:var(--text-3);letter-spacing:.14em;margin-top:2px;font-weight:600}
.side-nav{padding:24px 14px;flex:1}
.side-nav ul{display:flex;flex-direction:column;gap:6px}
.side-nav a{display:flex;align-items:center;gap:14px;padding:13px 16px;border-radius:var(--radius);color:var(--text-1);font-size:15px;font-weight:500;transition:all var(--tr);position:relative}
.side-nav a:hover{background:rgba(255,255,255,.06);color:var(--text-0)}
.side-nav a.active{background:rgba(47,107,255,.12);color:var(--primary-strong);font-weight:600}
.side-nav a.active::before{content:'';position:absolute;left:0;top:18%;bottom:18%;width:3px;border-radius:100px;background:var(--primary);box-shadow:var(--glow-primary)}
.nav-icon{width:22px;height:22px;flex-shrink:0;display:flex;align-items:center;justify-content:center}
.nav-icon svg{width:20px;height:20px;stroke:currentColor;fill:none;stroke-width:1.8}
.nav-label{white-space:nowrap;overflow:hidden;transition:opacity .2s}
.sidebar-foot{padding:16px;border-top:1px solid var(--border)}
.side-contact{display:flex;align-items:center;justify-content:center;gap:12px;padding:12px;border-radius:var(--radius);background:rgba(255,255,255,.03);border:1px solid var(--glass-border);color:var(--text-1);font-size:14px;font-weight:500;transition:all var(--tr)}
.side-contact:hover{background:rgba(47,107,255,.1);border-color:var(--primary);color:var(--text-0)}
.contact-icon{width:18px;height:18px}
/* Topbar mobile */
.topbar{display:none;position:sticky;top:0;height:64px;background:rgba(7,11,20,.85);backdrop-filter:blur(16px) saturate(140%);-webkit-backdrop-filter:blur(16px) saturate(140%);border-bottom:1px solid var(--border);z-index:999;align-items:center;justify-content:space-between;padding:0 20px}
.topbar-brand{font-size:17px;font-weight:700;color:var(--text-0);letter-spacing:.02em}
.hamburger{width:42px;height:42px;border-radius:var(--radius);display:flex;flex-direction:column;align-items:center;justify-content:center;gap:5px;background:rgba(255,255,255,.05);border:1px solid var(--glass-border)}
.hamburger span{display:block;width:18px;height:2px;background:var(--text-0);border-radius:2px;transition:all .3s ease}
.hamburger.active span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.hamburger.active span:nth-child(2){opacity:0}
.hamburger.active span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
.drawer{position:fixed;top:64px;left:0;right:0;bottom:0;background:rgba(7,11,20,.97);backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);z-index:998;transform:translateX(100%);transition:transform .3s ease;display:flex;flex-direction:column;padding:32px 24px}
.drawer.open{transform:translateX(0)}
.drawer-nav{display:flex;flex-direction:column;gap:8px;flex:1}
.drawer-nav a{display:flex;align-items:center;gap:14px;padding:16px;border-radius:var(--radius);color:var(--text-1);font-size:17px;font-weight:500;border-bottom:1px solid var(--border)}
.drawer-nav a:hover{background:rgba(255,255,255,.06);color:var(--text-0)}
.drawer-nav a.active{color:var(--primary-strong);background:rgba(47,107,255,.1)}
.drawer-footer{padding-top:16px}
body.locked{overflow:hidden}
/* ===== Hero ===== */
.hero{position:relative;padding:88px 0 72px;background:linear-gradient(120deg,rgba(7,11,20,.92) 20%,rgba(7,11,20,.75) 55%,rgba(16,26,48,.85) 100%),url('/assets/images/backpic/back-1.png') center/cover no-repeat;border-bottom:1px solid var(--border);overflow:hidden}
.hero::before{content:'';position:absolute;inset:0;background-image:linear-gradient(rgba(255,255,255,.02) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.02) 1px,transparent 1px);background-size:56px 56px;pointer-events:none}
.hero::after{content:'';position:absolute;top:-120px;right:-80px;width:480px;height:480px;background:radial-gradient(circle,rgba(47,107,255,.22),transparent 70%);pointer-events:none}
.hero-inner{position:relative;z-index:2}
.hero-badge{display:inline-flex;align-items:center;gap:8px;background:rgba(255,255,255,.06);border:1px solid var(--glass-border);border-radius:100px;padding:6px 16px;font-size:13px;color:var(--text-1);margin-bottom:24px;backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px)}
.hero-badge::before{content:'';width:6px;height:6px;border-radius:50%;background:var(--volt);box-shadow:0 0 8px var(--volt)}
.hero h1{font-size:clamp(34px,5vw,48px);font-weight:800;line-height:1.2;letter-spacing:.02em;color:var(--text-0);margin-bottom:20px}
.hero h1 .hl{background:linear-gradient(90deg,var(--primary-strong),#7EA2FF);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;filter:drop-shadow(0 0 12px rgba(47,107,255,.5))}
.hero-sub{font-size:18px;color:var(--text-1);max-width:600px;margin-bottom:36px;line-height:1.7}
.hero-ctas{display:flex;gap:16px;flex-wrap:wrap;margin-bottom:56px}
.hero-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;max-width:640px}
.stat-card{background:rgba(255,255,255,.06);border:1px solid var(--glass-border);border-radius:var(--radius-md);padding:20px 24px;backdrop-filter:blur(16px) saturate(140%);-webkit-backdrop-filter:blur(16px) saturate(140%);box-shadow:var(--shadow);text-align:center;transition:all var(--tr);position:relative;overflow:hidden}
.stat-card::after{content:'';position:absolute;top:0;left:0;right:0;height:1px;background:linear-gradient(90deg,transparent,rgba(255,255,255,.2),transparent)}
.stat-card:hover{transform:translateY(-4px);border-color:var(--primary);box-shadow:var(--glow-primary)}
.stat-number{font-family:var(--font-num);font-size:34px;font-weight:700;color:var(--volt);letter-spacing:.06em;line-height:1.1}
.stat-label{font-size:13px;color:var(--text-2);margin-top:4px}
/* ===== Features ===== */
.features-grid{display:grid;grid-template-columns:1.6fr 1fr;gap:24px}
.feature-main{grid-row:span 2;border-radius:var(--radius-lg);overflow:hidden;position:relative;background:var(--bg-2);border:1px solid var(--border);transition:all var(--tr)}
.feature-main:hover{border-color:rgba(47,107,255,.35);box-shadow:var(--shadow-lg);transform:translateY(-4px)}
.feature-img{height:220px;overflow:hidden}
.feature-img img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease}
.feature-main:hover .feature-img img{transform:scale(1.04)}
.feature-body{padding:28px 28px 32px}
.feature-body h3{font-size:22px;font-weight:700;margin-bottom:12px;line-height:1.4}
.feature-body p{color:var(--text-1);font-size:15px;line-height:1.8}
.feature-link{display:inline-flex;align-items:center;gap:6px;margin-top:16px;font-size:14px;color:var(--primary-strong);font-weight:600}
.feature-link svg{width:16px;height:16px;transition:transform var(--tr)}
.feature-main:hover .feature-link svg{transform:translateX(4px)}
.feature-small{background:var(--glass-bg);border:1px solid var(--glass-border);border-radius:var(--radius-md);padding:24px;backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);transition:all var(--tr);display:flex;flex-direction:column;gap:12px}
.feature-small:hover{transform:translateY(-4px);border-color:rgba(47,107,255,.35);box-shadow:var(--shadow)}
.feature-icon{width:48px;height:48px;border-radius:var(--radius);background:rgba(47,107,255,.12);display:flex;align-items:center;justify-content:center;flex-shrink:0}
.feature-icon svg{width:24px;height:24px;stroke:var(--primary-strong);fill:none;stroke-width:1.6}
.feature-small h4{font-size:17px;font-weight:600;line-height:1.4}
.feature-small p{font-size:14px;color:var(--text-1);line-height:1.75}
/* ===== Scenarios ===== */
.scenarios{background:var(--bg-1)}
.scenario-row{display:grid;grid-template-columns:1fr 1fr;align-items:center;gap:48px;padding:36px 0;border-bottom:1px solid var(--border)}
.scenario-row:last-child{border-bottom:none}
.scenario-row.reverse .scenario-media{order:2}
.scenario-media{border-radius:var(--radius-lg);overflow:hidden;position:relative;box-shadow:var(--shadow);background:var(--bg-2)}
.scenario-media img{width:100%;height:280px;object-fit:cover;transition:transform .5s ease}
.scenario-media:hover img{transform:scale(1.03)}
.scenario-media::after{content:'';position:absolute;inset:0;background:linear-gradient(160deg,rgba(47,107,255,.12),transparent 40%);pointer-events:none}
.scenario-num{font-family:var(--font-num);font-size:48px;font-weight:700;color:rgba(198,242,78,.35);line-height:1}
.scenario-tag{display:inline-block;padding:4px 14px;border-radius:100px;background:rgba(47,107,255,.1);border:1px solid rgba(47,107,255,.3);color:var(--primary-strong);font-size:13px;font-weight:600;margin-bottom:10px;margin-top:8px}
.scenario-body h3{font-size:clamp(22px,2.4vw,28px);font-weight:700;margin-bottom:12px;line-height:1.35}
.scenario-body p{color:var(--text-1);font-size:15px;line-height:1.8;max-width:440px}
/* ===== Cases ===== */
.case-maincard{display:grid;grid-template-columns:1.2fr 1fr;gap:0;border-radius:var(--radius-lg);overflow:hidden;background:var(--bg-2);border:1px solid var(--border);margin-bottom:24px;transition:all var(--tr)}
.case-maincard:hover{box-shadow:var(--shadow-lg);border-color:rgba(47,107,255,.3)}
.case-main-img{min-height:320px;position:relative;overflow:hidden}
.case-main-img img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.case-main-img::after{content:'';position:absolute;inset:0;background:linear-gradient(90deg,transparent 40%,rgba(7,11,20,.9) 100%)}
.case-mainbody{padding:36px;display:flex;flex-direction:column;justify-content:center;gap:16px}
.case-mainbody h3{font-size:24px;font-weight:700;line-height:1.4}
.case-mainbody p{color:var(--text-1);font-size:15px;line-height:1.8}
.case-stats{display:flex;gap:32px;flex-wrap:wrap;margin-top:8px}
.case-stat{text-align:left}
.case-stat .num{font-family:var(--font-num);font-size:30px;font-weight:700;color:var(--volt);letter-spacing:.04em}
.case-stat .lbl{font-size:13px;color:var(--text-2);display:block}
.case-quote{border-left:3px solid var(--primary);padding:8px 16px;background:rgba(47,107,255,.06);border-radius:0 var(--radius) var(--radius) 0;color:var(--text-1);font-size:14px;line-height:1.75}
.cases-subgrid{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.case-card{background:var(--glass-bg);border:1px solid var(--glass-border);border-radius:var(--radius-md);overflow:hidden;transition:all var(--tr);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px)}
.case-card:hover{transform:translateY(-4px);border-color:rgba(47,107,255,.35);box-shadow:var(--shadow)}
.case-card-img{height:180px;overflow:hidden;position:relative}
.case-card-img img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease}
.case-card:hover .case-card-img img{transform:scale(1.05)}
.case-card-img::after{content:'';position:absolute;inset:0;background:linear-gradient(180deg,transparent 50%,rgba(7,11,20,.75) 100%)}
.case-card-body{padding:20px 24px 26px}
.case-card-body h4{font-size:17px;font-weight:600;line-height:1.5;margin-bottom:10px}
.case-card-body p{font-size:14px;color:var(--text-1);line-height:1.7}
/* ===== Pricing ===== */
.pricing{background:var(--bg-1)}
.pricing-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;align-items:stretch}
.price-card{background:rgba(255,255,255,.04);border:1px solid var(--glass-border);border-radius:var(--radius-lg);padding:36px 28px;backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);transition:all var(--tr);position:relative;display:flex;flex-direction:column}
.price-card:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
.price-card.popular{background:rgba(47,107,255,.08);border-color:rgba(47,107,255,.5);box-shadow:var(--glow-primary),var(--shadow);transform:scale(1.02)}
.price-card.popular:hover{transform:scale(1.02) translateY(-4px);box-shadow:var(--glow-primary),var(--shadow-lg)}
.popular-tag{position:absolute;top:-14px;left:50%;transform:translateX(-50%);background:var(--volt);color:#0A0F1E;font-size:12px;font-weight:700;padding:4px 16px;border-radius:100px;box-shadow:0 4px 16px rgba(198,242,78,.35);letter-spacing:.06em;white-space:nowrap}
.price-name{font-size:16px;font-weight:700;color:var(--text-0);margin-bottom:8px}
.price-desc{font-size:13px;color:var(--text-2);margin-bottom:20px;line-height:1.6}
.price-amount{font-family:var(--font-num);font-size:44px;font-weight:700;color:var(--text-0);letter-spacing:.03em;line-height:1;margin-bottom:4px}
.price-amount .cur{font-size:22px;color:var(--text-2);font-weight:600;margin-right:4px}
.price-period{font-size:13px;color:var(--text-3)}
.price-features{margin:24px 0 32px;display:flex;flex-direction:column;gap:12px;flex:1}
.price-features li{display:flex;align-items:flex-start;gap:10px;font-size:14px;color:var(--text-1);line-height:1.6}
.price-features li::before{content:'✓';flex-shrink:0;width:18px;height:18px;border-radius:50%;background:rgba(47,107,255,.15);color:var(--primary-strong);font-size:11px;display:flex;align-items:center;justify-content:center;margin-top:2px}
.price-card.popular .price-features li::before{background:rgba(198,242,78,.15);color:var(--volt)}
/* ===== FAQ ===== */
.faq-layout{display:grid;grid-template-columns:360px 1fr;gap:48px}
.faq-title-box{position:sticky;top:40px;align-self:start}
.faq-title-box h2{font-size:32px;font-weight:700;line-height:1.3;margin-bottom:16px}
.faq-title-box p{color:var(--text-2);font-size:15px;line-height:1.7}
.faq-title-box .section-tag{margin-bottom:10px}
.faq-list{border:1px solid var(--border);border-radius:var(--radius-lg);overflow:hidden;background:rgba(255,255,255,.03)}
.faq-item{border-bottom:1px solid var(--border)}
.faq-item:last-child{border-bottom:none}
.faq-q{width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;padding:20px 24px;background:transparent;color:var(--text-0);font-size:16px;font-weight:600;text-align:left;transition:background var(--tr),color var(--tr);min-height:60px}
.faq-q:hover{background:rgba(47,107,255,.05)}
.faq-q .chevron{width:22px;height:22px;flex-shrink:0;border-radius:50%;border:1px solid var(--glass-border);display:flex;align-items:center;justify-content:center;font-size:13px;color:var(--text-2);transition:all .25s ease}
.faq-item.open .faq-q .chevron{transform:rotate(180deg);background:rgba(47,107,255,.12);border-color:var(--primary);color:var(--primary-strong)}
.faq-item.open .faq-q{color:var(--primary-strong)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease}
.faq-a-inner{padding:0 24px 24px;color:var(--text-1);font-size:15px;line-height:1.8}
/* ===== Latest CMS ===== */
.latest-grid{display:grid;grid-template-columns:1.2fr 1fr;gap:24px}
.latest-feature{display:flex;flex-direction:column;background:var(--bg-2);border:1px solid var(--border);border-radius:var(--radius-lg);overflow:hidden;transition:all var(--tr);color:var(--text-0)}
.latest-feature:hover{border-color:rgba(47,107,255,.4);box-shadow:var(--shadow-lg);transform:translateY(-4px);color:var(--text-0)}
.feature-img-lg{height:240px;overflow:hidden;position:relative}
.feature-img-lg img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease}
.latest-feature:hover .feature-img-lg img{transform:scale(1.03)}
.feature-img-lg::after{content:'';position:absolute;inset:0;background:linear-gradient(180deg,transparent 55%,rgba(7,11,20,.6))}
.feature-content{padding:24px 28px 28px}
.feature-content .meta-row{display:flex;align-items:center;gap:12px;margin-bottom:12px}
.feature-content h3{font-size:20px;font-weight:700;line-height:1.4;margin-bottom:12px}
.feature-content p{color:var(--text-1);font-size:14px;line-height:1.75;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;margin-bottom:16px}
.read-more{font-size:14px;font-weight:600;color:var(--primary-strong);display:inline-flex;align-items:center;gap:6px}
.read-more::after{content:'→';transition:transform var(--tr)}
.latest-feature:hover .read-more::after{transform:translateX(4px)}
.latest-list{display:flex;flex-direction:column;gap:16px}
.list-item{display:flex;align-items:center;gap:16px;background:rgba(255,255,255,.04);border:1px solid var(--glass-border);border-radius:var(--radius-md);padding:16px 20px;transition:all var(--tr);color:var(--text-0);min-height:92px}
.list-item:hover{border-color:rgba(47,107,255,.35);background:rgba(47,107,255,.06);transform:translateX(4px);color:var(--text-0)}
.list-item-content{flex:1;min-width:0}
.list-item-content .meta-row{display:flex;align-items:center;gap:10px;margin-bottom:6px}
.list-item-content h4{font-size:15px;font-weight:600;line-height:1.5;color:var(--text-0);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.list-item-content p{font-size:13px;color:var(--text-2);line-height:1.6;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.list-arrow{width:36px;height:36px;border-radius:50%;background:rgba(255,255,255,.04);border:1px solid var(--glass-border);display:flex;align-items:center;justify-content:center;font-size:14px;color:var(--text-2);transition:all var(--tr);flex-shrink:0}
.list-item:hover .list-arrow{background:var(--primary);color:#fff;border-color:var(--primary);transform:translateX(4px);box-shadow:0 0 14px rgba(47,107,255,.4)}
.date{font-size:13px;color:var(--text-3);white-space:nowrap}
.empty-state{display:flex;flex-direction:column;align-items:center;justify-content:center;padding:80px 20px;background:rgba(255,255,255,.03);border:1px dashed var(--border-strong);border-radius:var(--radius-lg);text-align:center}
.empty-icon{width:64px;height:64px;border-radius:50%;background:rgba(47,107,255,.1);display:flex;align-items:center;justify-content:center;margin-bottom:16px}
.empty-icon svg{width:30px;height:30px;stroke:var(--primary-strong)}
.empty-state p{color:var(--text-2);font-size:15px;margin-bottom:20px}
/* ===== CTA ===== */
.cta-section{position:relative;padding:96px 0;background:linear-gradient(160deg,rgba(7,11,20,.92),rgba(7,11,20,.78) 50%,rgba(16,26,48,.88)),url('/assets/images/backpic/back-2.webp') center/cover no-repeat;border-top:1px solid var(--border)}
.cta-panel{max-width:760px;margin:0 auto;background:rgba(255,255,255,.05);border:1px solid var(--glass-border);border-radius:var(--radius-lg);padding:48px;backdrop-filter:blur(18px) saturate(140%);-webkit-backdrop-filter:blur(18px) saturate(140%);text-align:center;box-shadow:var(--shadow)}
.cta-panel h2{font-size:clamp(26px,3vw,32px);font-weight:700;margin-bottom:12px;line-height:1.3}
.cta-panel>p{color:var(--text-1);font-size:15px;margin-bottom:32px;line-height:1.7}
.cta-form{display:grid;grid-template-columns:1fr 1fr;gap:16px;text-align:left}
.form-field{display:flex;flex-direction:column;gap:6px}
.form-field.full{grid-column:1/-1}
.form-label{font-size:13px;color:var(--text-2);font-weight:500}
.form-input,.form-select{background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.14);border-radius:var(--radius);padding:12px 16px;color:var(--text-0);font-size:14px;transition:all var(--tr)}
.form-input:focus,.form-select:focus{border-color:var(--primary);box-shadow:0 0 0 3px rgba(47,107,255,.25);background:rgba(255,255,255,.08)}
.form-input::placeholder{color:var(--text-3)}
.form-select{appearance:none;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' fill='none' stroke='%238A94B3' stroke-width='2'%3E%3Cpath d='M2 4l4 4 4-4'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 16px center;cursor:pointer}
.form-select option{background:var(--bg-2);color:var(--text-0)}
.cta-form .btn{grid-column:1/-1;margin-top:8px}
.form-success{display:none;padding:24px;background:rgba(34,197,94,.1);border:1px solid rgba(34,197,94,.3);border-radius:var(--radius);color:#4ADE80;font-size:15px;text-align:center;margin-top:16px}
.form-success.show{display:block}
/* ===== Footer ===== */
.footer{background:var(--bg-0);border-top:1px solid var(--border);position:relative}
.footer::before{content:'';position:absolute;top:0;left:0;right:0;height:1px;background:linear-gradient(90deg,transparent,rgba(47,107,255,.7),transparent)}
.footer-top{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:48px;padding:64px 0 48px}
.footer-brand .brand{display:flex;align-items:center;gap:12px;margin-bottom:16px}
.footer-name{font-size:18px;font-weight:700;color:var(--text-0);letter-spacing:.02em}
.footer-brand p{color:var(--text-2);font-size:14px;line-height:1.8;margin-bottom:16px;max-width:300px}
.icp{font-size:12px;color:var(--text-3)}
.footer-col h5{font-size:15px;font-weight:600;color:var(--text-0);margin-bottom:20px;letter-spacing:.02em}
.footer-col ul{display:flex;flex-direction:column;gap:12px}
.footer-col a{color:var(--text-2);font-size:14px;transition:color var(--tr)}
.footer-col a:hover{color:var(--volt)}
.footer-col li{color:var(--text-2);font-size:14px;line-height:1.6}
.footer-bottom{border-top:1px solid var(--border);padding:24px 0;text-align:center;color:var(--text-3);font-size:13px}
/* ===== Responsive ===== */
@media (min-width:1024px) and (max-width:1279px){
.sidebar{width:var(--sidebar-collapsed)}
body{padding-left:var(--sidebar-collapsed)}
.brand{padding:24px 0;display:flex;justify-content:center}
.brand-text{display:none;position:absolute;left:70px;background:var(--bg-2);padding:8px 14px;border-radius:var(--radius);box-shadow:var(--shadow);font-size:14px;white-space:nowrap;z-index:20}
.brand-link:hover .brand-text{display:block}
.side-nav{padding:20px 10px}
.side-nav a{justify-content:center;padding:14px 0;gap:0}
.side-nav a .nav-label{display:none;position:absolute;left:72px;background:var(--bg-2);padding:6px 14px;border-radius:var(--radius);box-shadow:var(--shadow);font-size:13px;white-space:nowrap;z-index:19}
.side-nav a:hover .nav-label{display:block}
.nav-icon{width:24px;height:24px}
.sidebar-foot{padding:12px}
.side-contact{width:44px;height:44px;padding:0;margin:0 auto}
.side-contact span{display:none}
.side-contact .contact-icon{margin:0}
}
@media (max-width:1023px){
.sidebar{display:none}
body{padding-left:0}
.topbar{display:flex}
.hero{padding:64px 0 56px}
.section{padding:64px 0}
.features-grid{grid-template-columns:1fr 1fr}
.feature-main{grid-column:1/-1;grid-row:auto}
.feature-main .feature-img{height:200px}
.scenario-row{grid-template-columns:1fr;gap:24px}
.scenario-row.reverse .scenario-media{order:1}
.scenario-media img{height:240px}
.case-maincard{grid-template-columns:1fr}
.case-main-img{min-height:220px}
.case-main-img img{position:relative}
.case-main-img::after{background:linear-gradient(180deg,transparent,rgba(7,11,20,.7))}
.case-stats{gap:24px}
.pricing-grid{grid-template-columns:1fr;max-width:480px;margin:0 auto}
.price-card.popular{transform:none;order:-1}
.price-card.popular:hover{transform:translateY(-4px)}
.faq-layout{grid-template-columns:1fr;gap:32px}
.faq-title-box{position:relative;top:auto}
.latest-grid{grid-template-columns:1fr}
.footer-top{grid-template-columns:1fr 1fr;gap:32px}
.cta-panel{padding:40px 28px}
}
@media (max-width:767px){
.container{padding:0 20px}
.section{padding:48px 0}
.section-head{flex-direction:column;align-items:flex-start;gap:12px;margin-bottom:32px}
.hero{padding:48px 0 44px}
.hero h1{font-size:30px}
.hero-sub{font-size:16px;margin-bottom:28px}
.hero-ctas{gap:12px;margin-bottom:40px}
.hero-ctas .btn{padding:12px 20px}
.hero-stats{grid-template-columns:repeat(3,1fr);gap:10px}
.stat-card{padding:16px 12px}
.stat-number{font-size:26px}
.stat-label{font-size:12px}
.features-grid{grid-template-columns:1fr}
.feature-main{grid-column:auto}
.feature-img{height:180px}
.scenarios .scenario-row{padding:24px 0}
.scenario-media img{height:200px}
.scenario-num{font-size:36px}
.cases-subgrid{grid-template-columns:1fr}
.case-mainbody{padding:24px}
.pricing-grid{max-width:420px}
.price-card{padding:28px 20px}
.faq-layout{gap:24px}
.faq-q{padding:16px 20px;font-size:15px}
.faq-a-inner{padding:0 20px 20px;font-size:14px}
.latest-grid{grid-template-columns:1fr}
.feature-img-lg{height:180px}
.list-item{flex-direction:column;align-items:flex-start;padding:18px;min-height:auto;gap:8px}
.list-arrow{display:none}
.list-item-content h4{white-space:normal;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical}
.cta-section{padding:56px 0}
.cta-panel{padding:32px 20px}
.cta-form{grid-template-columns:1fr}
.form-field.full{grid-column:auto}
.cta-form .btn{grid-column:auto}
.footer-top{grid-template-columns:1fr;gap:32px}
.footer-bottom{padding:20px 0;font-size:12px}
}

/* roulang page: article */
/* ============ 设计变量 ============ */
:root {
    --bg-0: #070B14;
    --bg-1: #0B1222;
    --bg-2: #101A30;
    --primary: #2F6BFF;
    --primary-strong: #4C86FF;
    --primary-deep: #1A3E9E;
    --volt: #C6F24E;
    --amber: #FFAA2B;
    --text-0: #F2F6FF;
    --text-1: #C6D0E8;
    --text-2: #8A94B3;
    --text-3: #5A6485;
    --border: rgba(255, 255, 255, 0.10);
    --border-strong: rgba(255, 255, 255, 0.16);
    --glass-bg: rgba(255, 255, 255, 0.05);
    --glass-bg-strong: rgba(255, 255, 255, 0.08);
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --shadow: 0 8px 32px rgba(0, 0, 0, 0.25);
    --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.38);
    --glow: 0 0 24px rgba(47, 107, 255, 0.45);
    --glow-volt: 0 0 24px rgba(198, 242, 78, 0.30);
    --font-cn: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
    --font-num: "Rajdhani", "Barlow Condensed", "DIN Alternate", -apple-system, sans-serif;
    --sidebar-w: 240px;
    --sidebar-w-icon: 88px;
    --topbar-h: 64px;
}

/* ============ Reset 基础 ============ */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
    background: var(--bg-0);
    color: var(--text-0);
    font-family: var(--font-cn);
    font-size: 16px;
    line-height: 1.8;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
    min-height: 100vh;
}

img { max-width: 100%; display: block; }
a { color: var(--primary-strong); text-decoration: none; transition: color .25s ease, opacity .25s ease, transform .25s ease; }
a:hover { color: var(--text-0); }
ul, ol { list-style: none; }
button, input, select, textarea { font-family: inherit; font-size: inherit; color: inherit; background: none; border: none; outline: none; }
button { cursor: pointer; }

::selection { background: rgba(47, 107, 255, 0.35); color: #fff; }

/* ============ 滚动条 ============ */
::-webkit-scrollbar { width: 8px; height: 8px; }
::-webkit-scrollbar-track { background: var(--bg-0); }
::-webkit-scrollbar-thumb { background: rgba(255,255,255,0.15); border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: rgba(255,255,255,0.25); }

/* ============ 移动端顶栏 ============ */
.topbar {
    position: sticky;
    top: 0;
    z-index: 200;
    height: var(--topbar-h);
    background: rgba(7, 11, 20, 0.82);
    backdrop-filter: blur(18px) saturate(150%);
    -webkit-backdrop-filter: blur(18px) saturate(150%);
    border-bottom: 1px solid var(--border);
    display: none;
    align-items: center;
}

.topbar-inner {
    width: 100%;
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
}

.topbar-brand {
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--text-0);
    font-weight: 700;
    font-size: 17px;
    letter-spacing: 0.02em;
}

.topbar-brand:hover { color: var(--text-0); }

.menu-toggle {
    width: 42px;
    height: 42px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-sm);
    background: var(--glass-bg);
    border: 1px solid var(--border);
    color: var(--text-0);
    transition: background .25s ease, border-color .25s ease;
}

.menu-toggle:hover { background: var(--glass-bg-strong); border-color: var(--border-strong); }
.menu-toggle svg { width: 22px; height: 22px; }

/* ============ 抽屉 ============ */
.drawer-backdrop {
    position: fixed;
    inset: 0;
    z-index: 299;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    opacity: 0;
    visibility: hidden;
    transition: opacity .3s ease, visibility .3s ease;
}

.drawer-backdrop.open { opacity: 1; visibility: visible; }

.drawer {
    position: fixed;
    top: 0;
    right: 0;
    z-index: 300;
    width: min(320px, 86vw);
    height: 100vh;
    background: var(--bg-1);
    border-left: 1px solid var(--border);
    box-shadow: var(--shadow-lg);
    transform: translateX(100%);
    transition: transform .32s ease;
    display: flex;
    flex-direction: column;
    padding: 24px 20px 32px;
}

.drawer.open { transform: translateX(0); }

.drawer-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-bottom: 20px;
    border-bottom: 1px solid var(--border);
    margin-bottom: 24px;
}

.drawer-brand {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 700;
    font-size: 18px;
    color: var(--text-0);
}

.drawer-close {
    width: 38px;
    height: 38px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-sm);
    background: var(--glass-bg);
    border: 1px solid var(--border);
    color: var(--text-1);
    transition: background .25s ease;
}

.drawer-close:hover { background: var(--glass-bg-strong); color: var(--text-0); }
.drawer-close svg { width: 18px; height: 18px; }

.drawer-nav { flex: 1; }

.drawer-nav li + li { margin-top: 4px; }

.drawer-nav a {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 13px 16px;
    border-radius: var(--radius-md);
    color: var(--text-1);
    font-size: 16px;
    font-weight: 500;
    min-height: 48px;
    transition: background .25s ease, color .25s ease;
}

.drawer-nav a:hover { background: var(--glass-bg); color: var(--text-0); }
.drawer-nav a.active { background: rgba(47,107,255,0.14); color: var(--primary-strong); }
.drawer-nav svg { width: 20px; height: 20px; flex-shrink: 0; }

.drawer-footer { padding-top: 24px; border-top: 1px solid var(--border); }
.drawer-footer .btn-primary { width: 100%; justify-content: center; }

/* ============ 布局 ============ */
.site-layout {
    display: flex;
    min-height: 100vh;
}

/* ============ 侧边栏 ============ */
.sidebar {
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    width: var(--sidebar-w);
    z-index: 150;
    background: var(--bg-1);
    border-right: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    padding: 28px 0 24px;
    transition: width .3s ease;
}

.brand {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 0 20px 28px;
    border-bottom: 1px solid var(--border);
    margin-bottom: 22px;
    white-space: nowrap;
}

.logo-mark {
    width: 42px;
    height: 42px;
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-md);
    background: linear-gradient(140deg, var(--primary) 0%, var(--primary-deep) 100%);
    box-shadow: var(--glow);
    font-family: var(--font-num);
    font-weight: 700;
    font-size: 15px;
    letter-spacing: 0.06em;
    color: #fff;
}

.brand-text {
    display: flex;
    flex-direction: column;
    line-height: 1.3;
}

.brand-text strong {
    font-size: 17px;
    font-weight: 700;
    color: var(--text-0);
    letter-spacing: 0.02em;
}

.brand-text small {
    font-family: var(--font-num);
    font-size: 11px;
    letter-spacing: 0.08em;
    color: var(--primary-strong);
    margin-top: 2px;
}

.side-nav { flex: 1; padding: 0 12px; }

.side-nav ul { display: flex; flex-direction: column; gap: 4px; }

.side-nav a {
    position: relative;
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 12px 16px;
    border-radius: var(--radius-md);
    border-left: 3px solid transparent;
    color: var(--text-1);
    font-size: 15px;
    font-weight: 500;
    transition: background .25s ease, color .25s ease, border-color .25s ease;
}

.side-nav a:hover {
    background: var(--glass-bg);
    color: var(--text-0);
}

.side-nav a.active {
    background: rgba(47, 107, 255, 0.12);
    border-left-color: var(--primary);
    color: var(--primary-strong);
    box-shadow: inset 0 0 20px rgba(47, 107, 255, 0.06);
}

.side-nav .nav-icon {
    width: 20px;
    height: 20px;
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
}

.side-nav .nav-icon svg {
    width: 20px;
    height: 20px;
    fill: none;
    stroke: currentColor;
    stroke-width: 1.8;
}

.sidebar-foot {
    padding: 20px 20px 0;
    border-top: 1px solid var(--border);
}

/* ============ 主内容 ============ */
.main-content {
    flex: 1;
    margin-left: var(--sidebar-w);
    min-width: 0;
}

.container {
    max-width: 1160px;
    margin: 0 auto;
    padding: 0 28px;
}

/* ============ 按钮 ============ */
.btn-primary {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 24px;
    border-radius: var(--radius-md);
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-deep) 100%);
    color: #fff;
    font-size: 15px;
    font-weight: 600;
    letter-spacing: 0.02em;
    box-shadow: var(--glow);
    transition: transform .25s ease, box-shadow .25s ease, filter .25s ease;
}

.btn-primary:hover {
    color: #fff;
    transform: translateY(-2px);
    box-shadow: 0 0 32px rgba(47, 107, 255, 0.6);
    filter: brightness(1.08);
}

.btn-primary:active {
    transform: translateY(0);
    box-shadow: 0 0 18px rgba(47, 107, 255, 0.35);
}

.btn-ghost {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 24px;
    border-radius: var(--radius-md);
    background: var(--glass-bg);
    border: 1px solid var(--border-strong);
    color: var(--text-1);
    font-size: 15px;
    font-weight: 500;
    transition: transform .25s ease, background .25s ease, border-color .25s ease, color .25s ease;
}

.btn-ghost:hover {
    background: var(--glass-bg-strong);
    border-color: rgba(255, 255, 255, 0.25);
    color: var(--text-0);
    transform: translateY(-2px);
}

.btn-ghost:active {
    transform: translateY(0);
}

.btn-primary:focus-visible,
.btn-ghost:focus-visible {
    outline: 2px solid var(--primary);
    outline-offset: 3px;
}

/* ============ 面包屑 ============ */
.breadcrumb {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 8px;
    padding: 40px 0 16px;
    font-size: 14px;
    color: var(--text-2);
}

.breadcrumb a {
    color: var(--text-2);
    transition: color .25s ease;
}

.breadcrumb a:hover { color: var(--primary-strong); }

.breadcrumb .sep { color: var(--text-3); }
.breadcrumb .current { color: var(--text-1); max-width: 320px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }

/* ============ 文章 Hero ============ */
.article-hero {
    position: relative;
    border-radius: var(--radius-xl);
    overflow: hidden;
    background: var(--bg-2);
    padding: 48px 48px 40px;
    margin-bottom: 40px;
    border: 1px solid var(--border);
}

.article-hero::before {
    content: "";
    position: absolute;
    inset: 0;
    background: url('/assets/images/backpic/back-1.png') center/cover no-repeat;
    opacity: 0.45;
    z-index: 0;
}

.article-hero::after {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(120deg, rgba(7,11,20,0.94) 0%, rgba(7,11,20,0.78) 50%, rgba(7,11,20,0.55) 100%);
    z-index: 1;
}

.article-hero-inner {
    position: relative;
    z-index: 2;
}

.article-meta-row {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 16px;
    margin-bottom: 20px;
}

.badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 4px 12px;
    border-radius: 999px;
    background: rgba(198, 242, 78, 0.08);
    border: 1px solid rgba(198, 242, 78, 0.35);
    color: var(--volt);
    font-size: 13px;
    font-weight: 600;
    letter-spacing: 0.02em;
}

.meta-item {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    color: var(--text-2);
    font-size: 14px;
}

.meta-item svg { width: 15px; height: 15px; }

.article-hero h1 {
    font-size: clamp(26px, 3.4vw, 36px);
    font-weight: 800;
    line-height: 1.3;
    letter-spacing: 0.02em;
    color: var(--text-0);
    margin-bottom: 16px;
    text-shadow: 0 2px 24px rgba(0, 0, 0, 0.4);
    max-width: 780px;
}

/* ============ 文章封面 ============ */
.article-cover {
    border-radius: var(--radius-lg);
    overflow: hidden;
    margin-bottom: 44px;
    border: 1px solid var(--border);
    box-shadow: var(--shadow);
    position: relative;
}

.article-cover img {
    width: 100%;
    height: auto;
    aspect-ratio: 16 / 7;
    object-fit: cover;
}

.article-cover figcaption {
    position: absolute;
    left: 0;
    right: 0;
    bottom: 0;
    padding: 28px 20px 16px;
    background: linear-gradient(to top, rgba(0,0,0,0.7), transparent);
    color: var(--text-1);
    font-size: 13px;
    text-align: center;
}

/* ============ 文章正文区 ============ */
.article-body-wrap {
    max-width: 780px;
    margin: 0 auto;
}

.article-body {
    font-size: 17px;
    line-height: 1.9;
    color: var(--text-1);
}

.article-body p { margin-bottom: 1.6em; }

.article-body h2 {
    font-size: 24px;
    font-weight: 700;
    line-height: 1.4;
    color: var(--text-0);
    margin: 2em 0 0.8em;
    padding-left: 14px;
    border-left: 3px solid var(--primary);
}

.article-body h3 {
    font-size: 20px;
    font-weight: 600;
    line-height: 1.45;
    color: var(--text-0);
    margin: 1.6em 0 0.7em;
}

.article-body ul,
.article-body ol {
    margin: 0 0 1.6em;
    padding-left: 1.4em;
}

.article-body ul { list-style: square; }
.article-body ol { list-style: decimal; }
.article-body li { margin-bottom: 0.5em; }

.article-body a {
    color: var(--primary-strong);
    border-bottom: 1px solid rgba(76, 134, 255, 0.4);
    transition: border-color .25s ease;
}

.article-body a:hover { border-bottom-color: var(--primary-strong); }

.article-body strong { color: var(--text-0); font-weight: 700; }

.article-body blockquote {
    margin: 1.8em 0;
    padding: 18px 24px;
    background: var(--glass-bg);
    border-left: 3px solid var(--primary);
    border-radius: 0 var(--radius-md) var(--radius-md) 0;
    color: var(--text-1);
    font-size: 16px;
}

.article-body blockquote p { margin-bottom: 0; }

.article-body img {
    width: 100%;
    border-radius: var(--radius-md);
    margin: 1.8em 0;
    border: 1px solid var(--border);
}

.article-body img + em {
    display: block;
    text-align: center;
    font-size: 13px;
    color: var(--text-2);
    margin-top: -14px;
    margin-bottom: 1.6em;
    font-style: normal;
}

.article-body table {
    width: 100%;
    border-collapse: separate;
    border-spacing: 0;
    margin: 1.8em 0;
    font-size: 15px;
    background: var(--glass-bg);
    border-radius: var(--radius-md);
    overflow: hidden;
    border: 1px solid var(--border);
}

.article-body th {
    background: rgba(47, 107, 255, 0.12);
    color: var(--text-0);
    font-weight: 600;
    padding: 12px 16px;
    text-align: left;
    font-size: 14px;
}

.article-body td {
    padding: 10px 16px;
    border-top: 1px solid rgba(255, 255, 255, 0.06);
    color: var(--text-1);
}

.article-body tr:hover td { background: rgba(47, 107, 255, 0.04); }

.article-body code {
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid var(--border);
    border-radius: 4px;
    padding: 2px 8px;
    font-size: 14px;
    color: var(--volt);
}

.article-body pre {
    background: var(--bg-2);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 20px;
    margin: 1.8em 0;
    overflow-x: auto;
}

.article-body pre code {
    background: none;
    border: none;
    padding: 0;
    color: var(--text-1);
    font-size: 14px;
}

/* ============ 空态 ============ */
.empty-state {
    text-align: center;
    padding: 72px 24px;
    background: var(--glass-bg);
    border: 1px dashed var(--border-strong);
    border-radius: var(--radius-lg);
}

.empty-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    background: rgba(47, 107, 255, 0.15);
    color: var(--primary-strong);
}

.empty-icon svg { width: 30px; height: 30px; }

.empty-state p {
    color: var(--text-2);
    font-size: 16px;
    margin-bottom: 20px;
}

/* ============ 标签区域 ============ */
.article-tags {
    margin: 48px auto 0;
    max-width: 780px;
    padding-top: 24px;
    border-top: 1px solid var(--border);
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 10px;
}

.tag {
    display: inline-flex;
    align-items: center;
    padding: 6px 14px;
    border-radius: 999px;
    background: var(--glass-bg);
    border: 1px solid var(--border);
    color: var(--text-2);
    font-size: 13px;
    transition: border-color .25s ease, color .25s ease, background .25s ease;
}

.tag:hover {
    border-color: rgba(47, 107, 255, 0.5);
    color: var(--primary-strong);
    background: rgba(47, 107, 255, 0.08);
}

/* ============ 相关推荐 ============ */
.related-section {
    margin-top: 64px;
    padding-top: 48px;
    border-top: 1px solid var(--border);
}

.related-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 28px;
}

.related-head h2 {
    font-size: clamp(22px, 2.4vw, 28px);
    font-weight: 700;
    color: var(--text-0);
    display: flex;
    align-items: center;
    gap: 10px;
}

.related-head h2::before {
    content: "";
    width: 4px;
    height: 22px;
    border-radius: 2px;
    background: var(--primary);
    box-shadow: var(--glow);
}

.related-more {
    font-size: 14px;
    color: var(--text-2);
    display: inline-flex;
    align-items: center;
    gap: 4px;
    transition: color .25s ease, gap .25s ease;
}

.related-more:hover { color: var(--primary-strong); gap: 8px; }

.related-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.news-card {
    display: flex;
    flex-direction: column;
    background: var(--glass-bg);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: transform .3s ease, border-color .3s ease, box-shadow .3s ease;
}

.news-card:hover {
    transform: translateY(-4px);
    border-color: rgba(47, 107, 255, 0.4);
    box-shadow: var(--shadow);
}

.news-card-thumb {
    position: relative;
    aspect-ratio: 16 / 10;
    overflow: hidden;
    background: var(--bg-2);
}

.news-card-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform .4s ease;
}

.news-card:hover .news-card-thumb img { transform: scale(1.05); }

.news-card-thumb::after {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(7, 11, 20, 0.5), transparent);
}

.news-card-body {
    padding: 18px 20px 16px;
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.news-card-cat {
    font-size: 12px;
    color: var(--volt);
    border: 1px solid rgba(198, 242, 78, 0.3);
    background: rgba(198, 242, 78, 0.06);
    border-radius: 999px;
    padding: 3px 10px;
    display: inline-block;
    width: fit-content;
}

.news-card-title {
    font-size: 16px;
    font-weight: 600;
    line-height: 1.5;
    color: var(--text-0);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    min-height: 3em;
}

.news-card-meta {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-top: auto;
    padding-top: 10px;
    border-top: 1px solid rgba(255, 255, 255, 0.06);
}

.news-card-date {
    font-size: 13px;
    color: var(--text-2);
    font-family: var(--font-num);
}

.news-card-link {
    font-size: 13px;
    color: var(--text-2);
    display: inline-flex;
    align-items: center;
    gap: 4px;
    transition: color .25s ease, gap .25s ease;
}

.news-card:hover .news-card-link { color: var(--primary-strong); gap: 8px; }

/* ============ 返回入口 ============ */
.article-back {
    margin-top: 48px;
    text-align: center;
}

/* ============ 页脚 ============ */
.footer {
    margin-left: var(--sidebar-w);
    background: var(--bg-1);
    border-top: 1px solid transparent;
    position: relative;
    margin-top: 80px;
}

.footer::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(47, 107, 255, 0.6), transparent);
}

.footer .container {
    max-width: 1160px;
    margin: 0 auto;
    padding: 56px 28px 28px;
}

.footer-top {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
    gap: 40px;
    padding-bottom: 36px;
}

.footer-brand .brand {
    padding: 0;
    border: none;
    margin-bottom: 16px;
}

.footer-name {
    font-size: 18px;
    font-weight: 700;
    color: var(--text-0);
}

.footer-brand p {
    color: var(--text-2);
    font-size: 14px;
    line-height: 1.7;
    margin-bottom: 14px;
    max-width: 280px;
}

.icp {
    font-size: 12px;
    color: var(--text-3);
}

.footer-col h5 {
    font-size: 15px;
    font-weight: 600;
    color: var(--text-0);
    margin-bottom: 18px;
    letter-spacing: 0.02em;
}

.footer-col ul { display: flex; flex-direction: column; gap: 10px; }

.footer-col ul a {
    color: var(--text-2);
    font-size: 14px;
    transition: color .25s ease, padding-left .25s ease;
}

.footer-col ul a:hover {
    color: var(--primary-strong);
    padding-left: 4px;
}

.footer-col ul li {
    color: var(--text-2);
    font-size: 14px;
    line-height: 1.6;
}

.footer-bottom {
    padding-top: 22px;
    border-top: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 12px;
    font-size: 13px;
    color: var(--text-3);
}

/* ============ 响应式断点 1280+ ============ */
@media (min-width: 1280px) {
    .container { padding: 0 36px; }
}

/* ============ 响应式 1024-1279 ============ */
@media (max-width: 1279px) {
    .sidebar { width: var(--sidebar-w-icon); }
    .brand { flex-direction: column; align-items: center; gap: 8px; padding: 12px 8px 24px; }
    .brand-text { display: none; }
    .side-nav { padding: 0 12px; }
    .side-nav a { justify-content: center; padding: 14px; gap: 0; }
    .side-nav a .nav-label {
        display: none;
        position: absolute;
        left: calc(100% + 10px);
        top: 50%;
        transform: translateY(-50%);
        background: var(--bg-2);
        border: 1px solid var(--border);
        border-radius: var(--radius-sm);
        padding: 6px 14px;
        font-size: 13px;
        color: var(--text-0);
        white-space: nowrap;
        box-shadow: var(--shadow);
        z-index: 20;
        font-weight: 500;
    }
    .side-nav a:hover .nav-label { display: block; }
    .sidebar-foot { padding: 16px 12px 0; }
    .sidebar-foot .btn-ghost { padding: 10px 12px; font-size: 13px; justify-content: center; }
    .main-content, .footer { margin-left: var(--sidebar-w-icon); }
}

/* ============ 响应式 < 1024 ============ */
@media (max-width: 1023px) {
    .sidebar { display: none; }
    .topbar { display: flex; }
    .main-content, .footer { margin-left: 0; }
    .container { padding: 0 20px; }
    .breadcrumb { padding-top: 28px; }
    .article-hero { padding: 32px 24px; }
    .related-grid { grid-template-columns: repeat(2, 1fr); }
    .footer-top { grid-template-columns: 1fr 1fr; gap: 34px 24px; }
}

/* ============ 响应式 < 768 ============ */
@media (max-width: 767px) {
    body { font-size: 15px; }
    .container { padding: 0 16px; }
    .article-hero { padding: 24px 18px; border-radius: 16px; }
    .article-hero h1 { font-size: 22px; }
    .article-meta-row { gap: 10px; }
    .meta-item { font-size: 13px; }
    .article-cover img { aspect-ratio: 4 / 3; }
    .article-body { font-size: 16px; line-height: 1.85; }
    .related-grid { grid-template-columns: 1fr; }
    .footer-top { grid-template-columns: 1fr; gap: 28px; }
    .footer .container { padding: 40px 16px 24px; }
    .footer-bottom { justify-content: center; text-align: center; }
    .article-tags { gap: 8px; }
    .tag { padding: 5px 12px; font-size: 12px; }
}

/* roulang page: category1 */
/* ===== 设计变量 ===== */
:root {
  --bg-0: #070B14;
  --bg-1: #0B1222;
  --bg-2: #101A30;
  --primary: #2F6BFF;
  --primary-strong: #4C86FF;
  --primary-deep: #1A3E9E;
  --volt: #C6F24E;
  --amber: #FFAA2B;
  --text-0: #F2F6FF;
  --text-1: #C6D0E8;
  --text-2: #8A94B3;
  --text-3: #5A6485;
  --border-alpha: rgba(255,255,255,0.08);
  --glass-bg: rgba(255,255,255,0.05);
  --glass-border: rgba(255,255,255,0.10);
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --shadow: 0 8px 32px rgba(0,0,0,0.25);
  --shadow-hover: 0 16px 48px rgba(0,0,0,0.35);
  --glow: 0 0 24px rgba(47,107,255,0.45);
  --glow-volt: 0 0 24px rgba(198,242,78,0.30);
  --transition: 0.25s ease;
  --sidebar-w: 240px;
  --sidebar-w-collapsed: 88px;
  --font-cn: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  --font-display: "Rajdhani", "Barlow Condensed", -apple-system, BlinkMacSystemFont, sans-serif;
}
/* ===== Reset & Base ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-cn);
  background: var(--bg-0);
  color: var(--text-0);
  line-height: 1.8;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img { display: block; max-width: 100%; height: auto; }
a { color: var(--primary-strong); text-decoration: none; transition: color var(--transition), box-shadow var(--transition); }
a:hover { color: var(--primary-strong); text-decoration: none; }
ul, ol { list-style: none; }
button, input, select, textarea {
  font-family: inherit;
  font-size: inherit;
  color: inherit;
  border: none;
  background: none;
  outline: none;
}
button { cursor: pointer; }
:focus-visible { outline: 2px solid var(--primary); outline-offset: 3px; box-shadow: 0 0 0 8px rgba(47,107,255,0.15); border-radius: var(--radius-sm); }
::selection { background: rgba(47,107,255,0.35); color: #fff; }
::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: var(--bg-0); }
::-webkit-scrollbar-thumb { background: rgba(255,255,255,0.12); border-radius: 6px; border: 2px solid var(--bg-0); }
::-webkit-scrollbar-thumb:hover { background: rgba(255,255,255,0.2); }
.container { width: 100%; max-width: 1160px; margin: 0 auto; padding: 0 32px; }
/* ===== 左侧导航 ===== */
.side-nav {
  position: fixed;
  top: 0; left: 0; bottom: 0;
  width: var(--sidebar-w);
  background: var(--bg-1);
  border-right: 1px solid var(--border-alpha);
  display: flex;
  flex-direction: column;
  z-index: 100;
  transition: width 0.3s ease, transform 0.3s ease;
}
.side-brand {
  padding: 28px 24px 20px;
  border-bottom: 1px solid var(--border-alpha);
}
.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--text-0);
  font-weight: 700;
}
.brand:hover { color: var(--text-0); }
.logo-mark {
  width: 40px; height: 40px;
  background: var(--primary);
  border-radius: 10px;
  color: var(--volt);
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 800;
  letter-spacing: 0.06em;
  display: flex; align-items: center; justify-content: center;
  box-shadow: 0 0 20px rgba(47,107,255,0.35), inset 0 1px 0 rgba(255,255,255,0.2);
  flex-shrink: 0;
}
.brand-text {
  font-size: 18px;
  letter-spacing: 0.02em;
  white-space: nowrap;
  transition: opacity 0.3s ease;
}
.side-nav ul { flex: 1; padding: 16px 12px; overflow-y: auto; }
.side-nav ul li { margin-bottom: 4px; }
.nav-icon { width: 24px; height: 24px; flex-shrink: 0; display: inline-flex; align-items: center; justify-content: center; }
.nav-icon svg { width: 22px; height: 22px; fill: none; stroke: currentColor; stroke-width: 1.8; }
.side-nav ul a {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 12px 16px;
  border-radius: var(--radius-md);
  color: var(--text-1);
  font-size: 15px;
  font-weight: 500;
  letter-spacing: 0.02em;
  border-left: 3px solid transparent;
  transition: background var(--transition), color var(--transition), border-color var(--transition), box-shadow var(--transition);
  position: relative;
}
.side-nav ul a:hover {
  background: rgba(255,255,255,0.05);
  color: var(--text-0);
}
.side-nav ul a.active {
  background: rgba(47,107,255,0.12);
  color: var(--primary-strong);
  border-left-color: var(--primary);
  box-shadow: inset 0 0 20px rgba(47,107,255,0.05);
}
.side-nav ul a.active .nav-icon svg { stroke: var(--primary-strong); }
.side-nav .side-cta {
  padding: 16px 20px 24px;
  border-top: 1px solid var(--border-alpha);
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: var(--radius-md);
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0.02em;
  transition: all var(--transition);
  cursor: pointer;
  line-height: 1;
  text-align: center;
  border: 1px solid transparent;
}
.btn-primary {
  background: var(--primary);
  color: #fff;
  box-shadow: 0 4px 20px rgba(47,107,255,0.35);
}
.btn-primary:hover {
  background: var(--primary-strong);
  color: #fff;
  box-shadow: 0 6px 28px rgba(47,107,255,0.5);
  transform: translateY(-2px);
}
.btn-primary:active { transform: translateY(0); box-shadow: 0 2px 12px rgba(47,107,255,0.3); }
.btn-ghost {
  background: rgba(255,255,255,0.05);
  color: var(--text-0);
  border-color: rgba(255,255,255,0.14);
  backdrop-filter: blur(12px);
}
.btn-ghost:hover {
  background: rgba(255,255,255,0.1);
  color: #fff;
  border-color: rgba(255,255,255,0.25);
  transform: translateY(-2px);
}
.btn-ghost:active { transform: translateY(0); }
.btn-sm { padding: 10px 18px; font-size: 14px; border-radius: 10px; }
.btn-block { width: 100%; }
.side-cta .btn { width: 100%; }
/* ===== 主内容区 ===== */
.main-content {
  margin-left: var(--sidebar-w);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  transition: margin-left 0.3s ease;
}
.main-content > .container { flex: 1; }
/* ===== 移动端顶部导航 ===== */
.mobile-topbar {
  display: none;
  position: sticky;
  top: 0;
  z-index: 200;
  height: 64px;
  background: rgba(11,18,34,0.85);
  backdrop-filter: blur(20px) saturate(140%);
  -webkit-backdrop-filter: blur(20px) saturate(140%);
  border-bottom: 1px solid var(--border-alpha);
  padding: 0 20px;
  align-items: center;
  justify-content: space-between;
}
.mobile-topbar .brand { gap: 10px; }
.mobile-topbar .brand-text { font-size: 16px; }
.mobile-topbar .logo-mark { width: 34px; height: 34px; font-size: 15px; border-radius: 8px; }
.menu-toggle {
  width: 44px; height: 44px;
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  gap: 5px;
  border-radius: var(--radius-sm);
  transition: background var(--transition);
}
.menu-toggle:hover { background: rgba(255,255,255,0.06); }
.menu-toggle span {
  display: block; width: 22px; height: 2px;
  background: var(--text-0);
  border-radius: 2px;
  transition: transform 0.3s ease, opacity 0.3s ease;
}
.menu-toggle.active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.menu-toggle.active span:nth-child(2) { opacity: 0; }
.menu-toggle.active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
/* ===== 抽屉 ===== */
.drawer-overlay {
  position: fixed;
  inset: 0;
  background: rgba(7,11,20,0.7);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  z-index: 250;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
}
.drawer-overlay.open { opacity: 1; pointer-events: auto; }
.drawer-panel {
  position: fixed;
  top: 0; bottom: 0; right: 0;
  width: 300px;
  background: var(--bg-1);
  padding: 24px;
  transform: translateX(100%);
  transition: transform 0.3s ease;
  display: flex; flex-direction: column;
  box-shadow: -20px 0 60px rgba(0,0,0,0.4);
  z-index: 260;
}
.drawer-overlay.open .drawer-panel { transform: translateX(0); }
.drawer-header {
  display: flex; align-items: center; justify-content: space-between;
  margin-bottom: 24px;
}
.drawer-close {
  width: 40px; height: 40px;
  display: flex; align-items: center; justify-content: center;
  border-radius: 50%;
  background: rgba(255,255,255,0.06);
  color: var(--text-0);
  font-size: 22px;
  transition: background var(--transition), transform var(--transition);
}
.drawer-close:hover { background: rgba(255,255,255,0.12); transform: rotate(90deg); }
.drawer-panel nav ul li { margin-bottom: 4px; }
.drawer-panel nav a {
  display: block;
  padding: 14px 16px;
  border-radius: var(--radius-md);
  color: var(--text-1);
  font-size: 16px;
  font-weight: 500;
  transition: background var(--transition), color var(--transition);
}
.drawer-panel nav a:hover { background: rgba(255,255,255,0.05); color: var(--text-0); }
.drawer-panel nav a.active { background: rgba(47,107,255,0.12); color: var(--primary-strong); }
.drawer-footer { margin-top: auto; padding-top: 24px; border-top: 1px solid var(--border-alpha); }
/* ===== 面包屑 ===== */
.breadcrumb {
  padding: 24px 0 8px;
  font-size: 13px;
  color: var(--text-2);
  display: flex; align-items: center; gap: 8px;
  flex-wrap: wrap;
}
.breadcrumb a { color: var(--text-2); }
.breadcrumb a:hover { color: var(--primary-strong); }
.breadcrumb .sep { color: var(--text-3); }
.breadcrumb .current { color: var(--text-1); }
/* ===== Hero 区 ===== */
.page-hero {
  position: relative;
  padding: 72px 0 64px;
  border-radius: var(--radius-xl);
  overflow: hidden;
  margin-top: 24px;
  background-image: url('/assets/images/backpic/back-2.webp');
  background-size: cover;
  background-position: center;
  border: 1px solid var(--glass-border);
}
.page-hero::before {
  content: '';
  position: absolute; inset: 0;
  background: linear-gradient(100deg, rgba(7,11,20,0.95) 10%, rgba(7,11,20,0.75) 55%, rgba(47,107,255,0.25) 100%);
  z-index: 1;
}
.page-hero::after {
  content: '';
  position: absolute; inset: 0;
  background-image: radial-gradient(rgba(255,255,255,0.035) 1px, transparent 1px);
  background-size: 24px 24px;
  z-index: 1;
  pointer-events: none;
}
.hero-inner {
  position: relative;
  z-index: 2;
  padding: 0 48px;
  max-width: 780px;
}
.page-hero .label-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(198,242,78,0.12);
  border: 1px solid rgba(198,242,78,0.25);
  color: var(--volt);
  font-size: 13px;
  font-weight: 600;
  padding: 6px 14px;
  border-radius: 100px;
  margin-bottom: 20px;
  letter-spacing: 0.04em;
}
.page-hero h1 {
  font-size: clamp(32px, 4.5vw, 44px);
  line-height: 1.25;
  font-weight: 800;
  color: var(--text-0);
  letter-spacing: 0.02em;
  margin-bottom: 16px;
}
.page-hero h1 .hero-brand {
  color: var(--primary-strong);
  text-shadow: 0 0 30px rgba(47,107,255,0.6);
}
.page-hero .hero-sub {
  font-size: clamp(15px, 2vw, 18px);
  color: var(--text-1);
  line-height: 1.7;
  margin-bottom: 32px;
  max-width: 620px;
}
.hero-stats {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  margin-top: 36px;
}
.stat-card {
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.10);
  backdrop-filter: blur(16px) saturate(140%);
  -webkit-backdrop-filter: blur(16px) saturate(140%);
  border-radius: var(--radius-lg);
  padding: 18px 24px;
  min-width: 140px;
  box-shadow: 0 8px 30px rgba(0,0,0,0.2), inset 0 1px 0 rgba(255,255,255,0.06);
  transition: transform var(--transition), border-color var(--transition), box-shadow var(--transition);
}
.stat-card:hover {
  transform: translateY(-4px);
  border-color: rgba(47,107,255,0.35);
  box-shadow: 0 12px 40px rgba(0,0,0,0.3), var(--glow);
}
.stat-num {
  font-family: var(--font-display);
  font-size: 32px;
  font-weight: 700;
  color: var(--volt);
  line-height: 1.1;
  letter-spacing: 0.04em;
  display: block;
}
.stat-label {
  font-size: 13px;
  color: var(--text-2);
  margin-top: 4px;
  letter-spacing: 0.02em;
}
/* ===== 索引锚点 ===== */
.index-nav {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin: 48px 0;
}
.index-card {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 20px 22px;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  transition: all var(--transition);
}
.index-card:hover {
  background: rgba(47,107,255,0.08);
  border-color: rgba(47,107,255,0.35);
  transform: translateY(-4px);
  box-shadow: 0 10px 30px rgba(0,0,0,0.25);
}
.index-icon {
  width: 44px; height: 44px;
  background: rgba(47,107,255,0.12);
  border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
}
.index-icon svg { width: 22px; height: 22px; fill: none; stroke: var(--primary-strong); stroke-width: 1.8; }
.index-card h3 { font-size: 15px; font-weight: 600; color: var(--text-0); margin-bottom: 2px; }
.index-card p { font-size: 13px; color: var(--text-2); line-height: 1.5; }
/* ===== 图文内容块 ===== */
.info-block {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: center;
  margin: 72px 0;
  scroll-margin-top: 80px;
}
.info-block.reverse .info-image { order: 2; }
.info-block.reverse .info-content { order: 1; }
.info-image {
  position: relative;
  border-radius: var(--radius-xl);
  overflow: visible;
}
.info-image::before {
  content: '';
  position: absolute;
  inset: -16px;
  background: radial-gradient(ellipse at center, rgba(47,107,255,0.12), transparent 70%);
  z-index: 0;
  pointer-events: none;
}
.info-image img {
  position: relative;
  z-index: 1;
  border-radius: var(--radius-xl);
  aspect-ratio: 4/3;
  object-fit: cover;
  border: 1px solid var(--glass-border);
  box-shadow: 0 20px 60px rgba(0,0,0,0.4);
}
.info-image.glass-frame::after {
  content: '';
  position: absolute;
  z-index: 2;
  inset: 0;
  border-radius: var(--radius-xl);
  background: linear-gradient(135deg, rgba(255,255,255,0.08) 0%, transparent 40%, rgba(47,107,255,0.08) 100%);
  pointer-events: none;
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.1);
}
.info-content { padding: 0 8px; }
.info-content .label {
  display: inline-block;
  background: rgba(198,242,78,0.10);
  border: 1px solid rgba(198,242,78,0.22);
  color: var(--volt);
  font-size: 13px;
  font-weight: 600;
  padding: 5px 14px;
  border-radius: 100px;
  margin-bottom: 18px;
  letter-spacing: 0.04em;
}
.info-content h2 {
  font-size: clamp(24px, 2.8vw, 32px);
  font-weight: 700;
  color: var(--text-0);
  line-height: 1.3;
  margin-bottom: 16px;
  letter-spacing: 0.02em;
}
.info-content > p {
  color: var(--text-1);
  font-size: 16px;
  line-height: 1.8;
  margin-bottom: 20px;
}
.feature-list { margin-bottom: 20px; }
.feature-list li {
  padding-left: 24px;
  position: relative;
  color: var(--text-1);
  font-size: 15px;
  line-height: 2;
}
.feature-list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 14px;
  width: 8px; height: 8px;
  background: var(--primary);
  border-radius: 2px;
  box-shadow: 0 0 12px rgba(47,107,255,0.6);
}
.tag-row { display: flex; gap: 8px; flex-wrap: wrap; }
.tag {
  display: inline-block;
  padding: 5px 14px;
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.12);
  color: var(--text-2);
  border-radius: 100px;
  font-size: 13px;
  transition: all var(--transition);
  letter-spacing: 0.02em;
}
.tag:hover {
  background: rgba(47,107,255,0.1);
  border-color: rgba(47,107,255,0.4);
  color: var(--primary-strong);
}
.tag-volt {
  border-color: rgba(198,242,78,0.25);
  color: var(--volt);
}
.tag-volt:hover { background: rgba(198,242,78,0.08); border-color: rgba(198,242,78,0.5); color: var(--volt); }
/* ===== 热门标签区 ===== */
.hot-tags {
  margin: 72px 0;
  padding: 48px;
  background: var(--bg-1);
  border: 1px solid var(--border-alpha);
  border-radius: var(--radius-xl);
  position: relative;
  overflow: hidden;
}
.hot-tags::before {
  content: '';
  position: absolute;
  top: -1px; left: 10%; right: 10%;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(47,107,255,0.6), transparent);
}
.section-head { margin-bottom: 28px; }
.section-head h2 {
  font-size: clamp(24px, 3vw, 32px);
  font-weight: 700;
  color: var(--text-0);
  letter-spacing: 0.02em;
  margin-bottom: 8px;
}
.section-head p { color: var(--text-2); font-size: 15px; }
.tag-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}
.tag-cloud .tag {
  font-size: 14px;
  padding: 8px 18px;
}
/* ===== 相邻栏目引导 ===== */
.related-links { margin: 72px 0; }
.related-links .section-head { text-align: left; }
.related-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}
.related-card {
  display: flex;
  flex-direction: column;
  padding: 32px;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}
.related-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--primary), var(--volt));
  opacity: 0;
  transition: opacity var(--transition);
}
.related-card:hover::before { opacity: 1; }
.related-card:hover {
  transform: translateY(-4px);
  border-color: rgba(47,107,255,0.3);
  background: rgba(47,107,255,0.05);
  box-shadow: var(--shadow-hover);
}
.related-card h3 { font-size: 20px; font-weight: 700; color: var(--text-0); margin-bottom: 10px; }
.related-card p { color: var(--text-2); font-size: 15px; line-height: 1.7; margin-bottom: 16px; }
.related-link {
  display: inline-flex; align-items: center; gap: 8px;
  color: var(--primary-strong);
  font-size: 15px; font-weight: 600;
  transition: gap var(--transition);
}
.related-card:hover .related-link { gap: 12px; }
.related-icon {
  width: 48px; height: 48px;
  background: rgba(47,107,255,0.12);
  border-radius: 12px;
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 18px;
}
.related-icon svg { width: 24px; height: 24px; fill: none; stroke: var(--primary-strong); stroke-width: 1.8; }
/* ===== FAQ ===== */
.faq-section {
  margin: 72px 0;
  padding: 48px;
  background: var(--bg-1);
  border: 1px solid var(--border-alpha);
  border-radius: var(--radius-xl);
  scroll-margin-top: 80px;
}
.faq-layout {
  display: grid;
  grid-template-columns: 0.8fr 1.4fr;
  gap: 48px;
  align-items: start;
}
.faq-intro h2 {
  font-size: clamp(24px, 3vw, 32px);
  font-weight: 700;
  color: var(--text-0);
  margin-bottom: 12px;
}
.faq-intro p { color: var(--text-2); font-size: 15px; line-height: 1.7; }
.faq-list { border-top: 1px solid rgba(255,255,255,0.06); }
.faq-item {
  border-bottom: 1px solid rgba(255,255,255,0.06);
}
.faq-question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 20px 4px;
  min-height: 48px;
  text-align: left;
  color: var(--text-0);
  font-size: 16px;
  font-weight: 600;
  letter-spacing: 0.02em;
  transition: color var(--transition);
}
.faq-question:hover { color: var(--primary-strong); }
.faq-icon {
  width: 20px; height: 20px;
  flex-shrink: 0;
  display: inline-flex; align-items: center; justify-content: center;
  transition: transform 0.25s ease;
}
.faq-icon svg { width: 18px; height: 18px; fill: none; stroke: currentColor; stroke-width: 2; }
.faq-item.open .faq-icon { transform: rotate(180deg); }
.faq-item.open .faq-icon svg { stroke: var(--primary-strong); }
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease, padding 0.35s ease;
  padding: 0 4px;
}
.faq-answer p {
  padding-bottom: 20px;
  color: var(--text-1);
  font-size: 15px;
  line-height: 1.75;
}
/* ===== CTA ===== */
.cta-section {
  margin: 72px 0;
  padding: 64px 48px;
  background-image: url('/assets/images/backpic/back-3.webp');
  background-size: cover;
  background-position: center;
  border-radius: var(--radius-xl);
  position: relative;
  overflow: hidden;
  border: 1px solid var(--glass-border);
}
.cta-section::before {
  content: '';
  position: absolute; inset: 0;
  background: linear-gradient(135deg, rgba(7,11,20,0.92) 0%, rgba(10,16,30,0.88) 60%, rgba(13,22,44,0.9) 100%);
  z-index: 1;
}
.cta-panel {
  position: relative;
  z-index: 2;
  max-width: 640px;
  margin: 0 auto;
  text-align: center;
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.12);
  backdrop-filter: blur(16px) saturate(140%);
  -webkit-backdrop-filter: blur(16px) saturate(140%);
  border-radius: var(--radius-xl);
  padding: 48px 48px 40px;
  box-shadow: 0 20px 60px rgba(0,0,0,0.4), inset 0 1px 0 rgba(255,255,255,0.06);
}
.cta-panel h2 {
  font-size: clamp(26px, 3.2vw, 34px);
  font-weight: 800;
  color: var(--text-0);
  letter-spacing: 0.02em;
  margin-bottom: 14px;
}
.cta-panel > p {
  color: var(--text-1);
  font-size: 16px;
  line-height: 1.7;
  margin-bottom: 32px;
}
.cta-form {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  text-align: left;
}
.cta-form input,
.cta-form select {
  width: 100%;
  padding: 13px 16px;
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.14);
  border-radius: var(--radius-md);
  color: var(--text-0);
  font-size: 15px;
  transition: border-color var(--transition), box-shadow var(--transition), background var(--transition);
  appearance: none;
  -webkit-appearance: none;
}
.cta-form input::placeholder { color: var(--text-3); }
.cta-form select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%238A94B3' stroke-width='2'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 16px center;
  cursor: pointer;
}
.cta-form select option { background: var(--bg-2); color: var(--text-0); }
.cta-form input:focus,
.cta-form select:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 4px rgba(47,107,255,0.25);
  background: rgba(47,107,255,0.04);
}
.cta-form .btn {
  grid-column: 1 / -1;
  width: 100%;
  padding: 14px 24px;
  margin-top: 8px;
  font-size: 16px;
}
.form-note {
  font-size: 13px;
  color: var(--text-3);
  text-align: center;
  margin-top: 20px;
  letter-spacing: 0.02em;
}
/* ===== 页脚 ===== */
.footer {
  background: var(--bg-1);
  border-top: 1px solid transparent;
  background-image: linear-gradient(var(--bg-1), var(--bg-1)), linear-gradient(90deg, transparent, rgba(47,107,255,0.6), transparent);
  background-origin: border-box;
  background-clip: padding-box, border-box;
  padding: 56px 0 0;
  margin-left: var(--sidebar-w);
  transition: margin-left 0.3s ease;
}
.footer-top {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 40px;
}
.footer-brand .brand { margin-bottom: 16px; }
.footer-brand p {
  color: var(--text-2);
  font-size: 14px;
  line-height: 1.8;
  margin-bottom: 16px;
  max-width: 280px;
}
.icp {
  display: inline-block;
  font-size: 13px;
  color: var(--text-3);
  padding: 4px 12px;
  border: 1px solid var(--border-alpha);
  border-radius: 100px;
}
.footer-col h5 {
  font-size: 15px;
  font-weight: 700;
  color: var(--text-0);
  margin-bottom: 18px;
  letter-spacing: 0.04em;
}
.footer-col ul li { margin-bottom: 10px; }
.footer-col ul a {
  color: var(--text-2);
  font-size: 14px;
  transition: color var(--transition), padding-left var(--transition);
}
.footer-col ul a:hover { color: var(--primary-strong); padding-left: 4px; }
.footer-col ul li:not(a) {
  color: var(--text-2);
  font-size: 14px;
  line-height: 1.7;
}
.footer-bottom {
  border-top: 1px solid var(--border-alpha);
  padding: 20px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}
.footer-bottom p {
  color: var(--text-3);
  font-size: 13px;
}
/* ===== 响应式 ===== */
@media (max-width: 1279px) {
  .side-nav { width: var(--sidebar-w-collapsed); }
  .side-nav .side-brand { padding: 24px 0; text-align: center; }
  .side-nav .side-brand .brand { justify-content: center; }
  .side-nav .brand-text { display: none; }
  .side-nav ul { padding: 12px 8px; }
  .side-nav ul a { justify-content: center; padding: 14px 0; gap: 0; border-left: none; border-bottom: 3px solid transparent; }
  .side-nav ul a.active { border-left-color: transparent; border-bottom-color: var(--primary); }
  .side-nav .side-cta { padding: 16px 12px; }
  .side-nav .side-cta .btn { padding: 12px 0; font-size: 13px; }
  .side-nav .side-cta .btn span { display: none; }
  .main-content { margin-left: var(--sidebar-w-collapsed); }
  .footer { margin-left: var(--sidebar-w-collapsed); }
}
@media (max-width: 1023px) {
  .side-nav { display: none; }
  .mobile-topbar { display: flex; }
  .main-content { margin-left: 0; }
  .footer { margin-left: 0; }
  .container { padding: 0 24px; }
  .page-hero { padding: 56px 0 48px; margin-top: 16px; }
  .hero-inner { padding: 0 32px; }
  .index-nav { grid-template-columns: repeat(2, 1fr); }
  .info-block {
    grid-template-columns: 1fr;
    gap: 32px;
    margin: 48px 0;
  }
  .info-block.reverse .info-image { order: 1; }
  .info-block.reverse .info-content { order: 2; }
  .info-image img { aspect-ratio: 16/10; max-height: 400px; }
  .faq-layout { grid-template-columns: 1fr; gap: 24px; }
  .cta-section { padding: 40px 24px; }
  .cta-panel { padding: 36px 28px; }
  .footer-top { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 767px) {
  .container { padding: 0 20px; }
  .page-hero { padding: 40px 0 36px; }
  .hero-inner { padding: 0 20px; }
  .hero-stats { gap: 10px; }
  .stat-card { padding: 14px 16px; min-width: 0; flex: 1; }
  .stat-num { font-size: 24px; }
  .stat-label { font-size: 12px; }
  .index-nav { grid-template-columns: 1fr; }
  .info-block { margin: 40px 0; gap: 24px; }
  .info-image img { aspect-ratio: 4/3; }
  .info-content h2 { font-size: 22px; }
  .hot-tags { padding: 32px 20px; margin: 48px 0; }
  .related-grid { grid-template-columns: 1fr; gap: 16px; }
  .faq-section { padding: 32px 20px; margin: 48px 0; }
  .faq-question { font-size: 15px; padding: 16px 0; }
  .cta-section { padding: 32px 16px; margin: 48px 0; }
  .cta-panel { padding: 32px 20px; }
  .cta-form { grid-template-columns: 1fr; }
  .cta-form .btn { grid-column: 1; }
  .footer-top { grid-template-columns: 1fr; gap: 32px; }
  .footer-bottom { flex-direction: column; align-items: flex-start; }
  .tag-cloud { gap: 8px; }
  .tag-cloud .tag { padding: 6px 14px; font-size: 13px; }
}