/* roulang page: index */
:root{--primary:#2F6BFF;--primary-dark:#1E4FB8;--primary-soft:#EAF1FE;--accent:#F2A65A;--bg:#F6F9FC;--card:#FFFFFF;--text:#172B4D;--text-2:#5E6E82;--text-3:#8A97A8;--border:#E2E9F0;--radius:20px;--radius-sm:10px;--shadow:0 10px 30px rgba(23,43,77,.06);--shadow-hover:0 18px 44px rgba(36,80,160,.12);--font:-apple-system,"PingFang SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif}
*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:var(--font);background:var(--bg);color:var(--text);font-size:16px;line-height:1.75;letter-spacing:.01em;-webkit-font-smoothing:antialiased}
img{max-width:100%;height:auto;display:block}
a{color:var(--primary);text-decoration:none;transition:color .2s ease}
a:hover{color:var(--primary-dark)}
ul,ol{list-style:none}
input,button,textarea{font-family:inherit;font-size:inherit}
section{scroll-margin-top:90px}
.container,.grid-container{max-width:1200px;margin-left:auto;margin-right:auto;padding-left:24px;padding-right:24px}
.section{padding:96px 0}
.section-brief{padding:64px 0}
.text-center{text-align:center}
.mt-16{margin-top:16px}
.mt-28{margin-top:28px}
.mt-40{margin-top:40px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:14px 28px;border-radius:var(--radius-sm);border:1px solid transparent;font-weight:700;font-size:15px;cursor:pointer;line-height:1.2;transition:all .25s ease;background:transparent}
.btn:focus-visible{outline:2px solid var(--primary);outline-offset:3px}
.btn-primary{background:var(--primary);border-color:var(--primary);color:#fff;box-shadow:0 12px 26px rgba(47,107,255,.24)}
.btn-primary:hover{background:var(--primary-dark);border-color:var(--primary-dark);color:#fff;transform:translateY(-2px);box-shadow:0 16px 30px rgba(30,79,184,.24)}
.btn-primary:active{transform:translateY(1px)}
.btn-secondary{background:var(--primary-soft);border-color:transparent;color:var(--primary-dark)}
.btn-secondary:hover{background:#dbe7fd;color:var(--primary-dark);transform:translateY(-2px)}
.btn-ghost{background:#fff;border-color:#D7DEE8;color:var(--text-2)}
.btn-ghost:hover{border-color:var(--primary);color:var(--primary);transform:translateY(-2px)}
.btn-lg{padding:16px 34px;font-size:16px;border-radius:12px}
.btn-sm{padding:9px 18px;font-size:14px}
.btn-block{width:100%}
.btn-light{background:#fff;border-color:#fff;color:var(--primary-dark)}
.btn-light:hover{background:var(--primary-soft);border-color:#fff;color:var(--primary-dark)}
.section-eyebrow{display:inline-flex;align-items:center;gap:6px;padding:7px 16px;border-radius:999px;background:var(--primary-soft);color:var(--primary-dark);font-size:13px;font-weight:800;letter-spacing:.06em}
.section-title{font-size:clamp(29px,3.6vw,43px);font-weight:800;line-height:1.22;letter-spacing:-.02em;margin:18px 0 12px}
.section-desc{font-size:17px;color:var(--text-2);line-height:1.8;max-width:680px}
.sec-head{max-width:740px;margin-bottom:48px}
.sec-head.center{margin-left:auto;margin-right:auto}
.sec-head.center .section-desc{margin-left:auto;margin-right:auto}
/* header */
.header-outer{position:relative;z-index:80;padding:16px 20px 0;background:transparent}
.header-wrap{max-width:1120px;margin:0 auto;background:rgba(255,255,255,.88);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);border:1px solid rgba(226,233,240,.85);box-shadow:0 8px 26px rgba(23,43,77,.06);border-radius:18px;padding:8px 16px;transition:all .25s ease;position:relative}
.header-wrap.stuck{position:fixed;top:12px;left:50%;transform:translateX(-50%);width:calc(100% - 40px);max-width:1120px;background:rgba(255,255,255,.96);box-shadow:0 16px 40px rgba(23,43,77,.14)}
.header-inner{display:flex;align-items:center;gap:16px;justify-content:space-between;flex-wrap:wrap}
.brand{display:flex;align-items:baseline;gap:8px;color:var(--text);padding:8px 4px}
.brand-name{font-size:20px;font-weight:800;color:var(--text);letter-spacing:-.01em}
.brand-sub{font-size:13px;font-weight:600;color:var(--primary)}
.nav-toggle{display:none;width:44px;height:44px;align-items:center;justify-content:center;border:1px solid var(--border);background:#fff;border-radius:10px;cursor:pointer;color:var(--text)}
.nav-links .nav-list{display:flex;align-items:center;gap:6px}
.nav-list li a.nav-item{display:inline-block;padding:10px 18px;border-radius:8px;color:var(--text-2);font-weight:600;font-size:15px;transition:all .2s ease}
.nav-list li a.nav-item:hover{background:var(--primary-soft);color:var(--primary-dark)}
.nav-list li a.nav-item.active{background:var(--primary-soft);color:var(--primary-dark);font-weight:700}
.nav-list li a.nav-cta-btn{display:inline-flex;align-items:center;background:var(--primary);color:#fff;border-radius:9px;padding:10px 18px;font-weight:700}
.nav-list li a.nav-cta-btn:hover{background:var(--primary-dark);color:#fff}
/* hero */
.hero{padding:92px 0 58px;position:relative;overflow:hidden;background:linear-gradient(180deg,#F1F6FD 0%,var(--bg) 100%)}
.hero:before{content:"";position:absolute;inset:0;opacity:.3;background-image:url('/assets/images/backpic/back-1.jpg');background-size:cover;background-position:center;mix-blend-mode:luminosity}
.hero-inner{position:relative;display:grid;grid-template-columns:1.05fr .95fr;gap:58px;align-items:center}
.hero-copy .hero-tag{display:inline-flex;align-items:center;gap:8px;background:#fff;border:1px solid var(--border);box-shadow:var(--shadow);padding:7px 16px;border-radius:999px;color:var(--primary-dark);font-size:13px;font-weight:800}
.hero-copy .hero-tag i{color:var(--accent)}
.hero-title{font-size:clamp(36px,4.8vw,54px);font-weight:800;line-height:1.16;margin:22px 0 18px;letter-spacing:-.03em;color:var(--text)}
.hero-title span{color:var(--primary)}
.hero-lead{font-size:18px;color:var(--text-2);line-height:1.85;max-width:540px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin:34px 0 26px}
.hero-metrics{display:flex;flex-wrap:wrap;gap:12px}
.hero-metrics span{display:inline-flex;align-items:center;gap:7px;background:#fff;border:1px solid var(--border);border-radius:999px;padding:7px 15px;font-size:13px;font-weight:600;color:var(--text-2);box-shadow:0 4px 12px rgba(23,43,77,.03)}
.hero-metrics i{color:var(--accent)}
.hero-visual{position:relative}
.hero-visual img{border-radius:28px;border:6px solid #fff;box-shadow:0 28px 70px rgba(36,80,160,.18);object-fit:cover;width:100%;aspect-ratio:4/4.3}
.hero-badge{position:absolute;left:22px;bottom:24px;background:rgba(255,255,255,.94);border:1px solid var(--border);border-radius:999px;padding:9px 17px;display:flex;align-items:center;gap:8px;box-shadow:var(--shadow-hover);color:var(--primary-dark);font-weight:800;font-size:13px}
.hero-badge i{color:var(--accent)}
/* services */
#services{background:#fff}
.services-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.service-card{position:relative;background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:28px 24px;min-height:230px;box-shadow:0 4px 14px rgba(23,43,77,.03);transition:all .28s ease;overflow:hidden}
.service-card:before{content:"";position:absolute;left:0;right:0;top:0;height:3px;background:var(--primary);opacity:0;transition:opacity .25s ease}
.service-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover);border-color:#C8DCFF}
.service-card:hover:before{opacity:1}
.service-icon{width:52px;height:52px;border-radius:14px;background:var(--primary-soft);color:var(--primary);display:flex;align-items:center;justify-content:center;font-size:23px;transition:all .25s ease}
.service-card:hover .service-icon{background:var(--primary);color:#fff}
.service-card h3{font-size:19px;font-weight:800;margin:18px 0 8px;letter-spacing:-.01em}
.service-card p{font-size:14px;color:var(--text-2);line-height:1.7}
.service-card .service-more{display:inline-block;margin-top:14px;font-size:14px;font-weight:700;color:var(--primary)}
.service-card.span2{grid-column:span 2}
.service-card.span20{grid-column:span 2}
@media(max-width:900px){.service-card.span20{grid-column:span 1}}
/* stats */
.stats{background:#101F3F;color:#fff;position:relative;overflow:hidden}
.stats:after{content:"";position:absolute;top:-40%;right:-10%;width:320px;height:320px;background:var(--primary);opacity:.18;filter:blur(80px)}
.stats-inner{position:relative}
.stats-title{font-size:clamp(26px,3vw,36px);font-weight:800;line-height:1.3;max-width:760px;margin-top:14px}
.stats-desc{color:#B9C7DE;margin-top:12px;max-width:680px;font-size:16px}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:28px;margin-top:52px}
.stat-item{background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.13);border-radius:18px;padding:30px 18px 26px;text-align:center;backdrop-filter:blur(4px)}
.stat-num{font-size:46px;font-weight:800;letter-spacing:-.03em;line-height:1;display:inline-flex;align-items:flex-start}
.stat-num span{font-size:25px;margin-top:6px;margin-left:2px}
.stat-label{color:#AEC0DA;font-size:14px;margin-top:12px}
.stats-highlight{display:flex;gap:10px;align-items:flex-start;background:rgba(242,166,90,.14);border:1px solid rgba(242,166,90,.35);border-radius:14px;padding:14px 20px;margin-top:40px;color:#FFE9D2;font-weight:600;font-size:15px}
.stats-highlight i{color:var(--accent);margin-top:4px}
/* case */
#cases{background:var(--bg)}
.case-layout{display:grid;grid-template-columns:2.1fr 1.6fr;gap:24px;align-items:stretch}
.case-card{background:#fff;border:1px solid var(--border);border-radius:20px;overflow:hidden;box-shadow:var(--shadow);transition:all .26s ease;display:flex;flex-direction:column}
.case-card:hover{box-shadow:var(--shadow-hover);border-color:#C8DCFF;transform:translateY(-2px)}
.case-main .case-media{height:320px;overflow:hidden}
.case-media img{width:100%;height:100%;object-fit:cover}
.case-media-thumb{height:190px;overflow:hidden}
.case-body{padding:26px;display:flex;flex-direction:column;flex:1}
.case-body .tagline{display:inline-flex;width:fit-content;background:var(--primary-soft);color:var(--primary-dark);font-size:12px;font-weight:700;padding:4px 10px;border-radius:999px}
.case-body h3{font-size:20px;font-weight:800;line-height:1.4;margin:12px 0 8px;letter-spacing:-.01em}
.case-body p{color:var(--text-2);font-size:15px;line-height:1.7}
.case-sub-list{display:grid;grid-template-rows:1fr 1fr;gap:24px}
.case-sub-card{display:flex;gap:18px;align-items:center;background:#fff;border:1px solid var(--border);border-radius:20px;padding:16px;box-shadow:var(--shadow);transition:all .26s ease}
.case-sub-card:hover{box-shadow:var(--shadow-hover);border-color:#C8DCFF;transform:translateY(-2px)}
.case-sub-card .case-sub-media{width:44%;min-height:140px;overflow:hidden;border-radius:14px}
.case-sub-media img{width:100%;height:100%;object-fit:cover}
.case-sub-card .case-sub-body{flex:1}
.case-sub-body .tagline{display:inline-flex;background:var(--primary-soft);color:var(--primary-dark);font-size:11px;font-weight:700;padding:3px 8px;border-radius:999px}
.case-sub-body h3{font-size:16px;font-weight:800;line-height:1.4;margin:8px 0 4px}
.case-sub-body p{font-size:13px;color:var(--text-2);line-height:1.6}
/* pricing */
#plans{background:#fff}
.pricing-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px;align-items:stretch}
.pricing-card{position:relative;background:#fff;border:1px solid var(--border);border-radius:24px;padding:38px 28px 32px;display:flex;flex-direction:column;box-shadow:0 6px 18px rgba(23,43,77,.04);transition:all .26s ease}
.pricing-card:hover{box-shadow:var(--shadow-hover);border-color:#C8DCFF;transform:translateY(-2px)}
.pricing-card.popular{border:1px solid var(--primary);box-shadow:0 22px 50px rgba(47,107,255,.18);transform:translateY(-8px)}
.pricing-card.popular:hover{transform:translateY(-10px)}
.popular-flag{position:absolute;top:-12px;left:50%;transform:translateX(-50%);background:var(--primary);color:#fff;padding:5px 16px;border-radius:999px;font-size:12px;font-weight:700;white-space:nowrap;box-shadow:0 6px 14px rgba(47,107,255,.28)}
.pricing-name{font-size:20px;font-weight:800}
.pricing-price{display:flex;align-items:flex-end;gap:4px;margin:18px 0 6px}
.pricing-price .symbol{font-size:20px;color:var(--text-3);font-weight:600;margin-bottom:9px}
.pricing-price .num{font-size:50px;font-weight:800;letter-spacing:-.03em;line-height:1}
.pricing-period{color:var(--text-3);font-size:13px;margin-bottom:20px}
.pricing-features{margin:16px 0 26px;flex:1}
.pricing-features li{display:flex;gap:10px;align-items:flex-start;padding:7px 0;color:var(--text-2);font-size:15px;line-height:1.6}
.pricing-features li i{color:var(--primary);margin-top:4px}
.pricing-note{font-size:13px;color:var(--text-3);margin-top:10px;text-align:center;line-height:1.6}
/* faq */
#faq{background:var(--bg)}
.faq-layout{display:grid;grid-template-columns:2fr 1fr;gap:36px;align-items:flex-start}
.faq-list details{background:#fff;border:1px solid var(--border);border-radius:16px;padding:22px 26px;transition:box-shadow .25s ease;margin-bottom:16px}
.faq-list details:hover{border-color:#C8DCFF;box-shadow:var(--shadow)}
.faq-list summary{display:flex;align-items:center;justify-content:space-between;gap:12px;cursor:pointer;font-size:17px;font-weight:800;color:var(--text);line-height:1.5;list-style:none}
.faq-list summary::-webkit-details-marker{display:none}
.faq-list summary:after{content:"\f078";font-family:"Font Awesome 6 Free";font-weight:900;color:var(--primary);transition:transform .25s ease;flex-shrink:0;background:var(--primary-soft);border-radius:50%;width:26px;height:26px;display:flex;align-items:center;justify-content:center;font-size:12px}
.faq-list details[open]{box-shadow:var(--shadow-hover);border-color:#C8DCFF}
.faq-list details[open] summary:after{transform:rotate(180deg)}
.faq-answer{color:var(--text-2);line-height:1.85;font-size:15px;margin-top:14px;padding-top:14px;border-top:1px solid var(--border)}
.faq-side{background:#fff;border:1px solid var(--border);border-radius:20px;padding:30px 26px;box-shadow:var(--shadow);position:sticky;top:100px}
.faq-side h3{font-size:18px;font-weight:800;margin-bottom:8px}
.faq-side p{color:var(--text-2);font-size:15px;line-height:1.7;margin-bottom:22px}
/* cta */
.cta-sec{padding:90px 0}
.cta-banner{background:linear-gradient(140deg,#0B2A6B,#1E4FB8);border-radius:28px;padding:70px 56px;display:grid;grid-template-columns:1.2fr .8fr;gap:40px;align-items:center;color:#fff;box-shadow:0 24px 60px rgba(11,42,107,.3);overflow:hidden}
.cta-banner h2{font-size:clamp(28px,4vw,44px);font-weight:800;line-height:1.25;letter-spacing:-.02em}
.cta-banner p{margin:14px 0 24px;font-size:16px;color:#D8E3FA;line-height:1.8}
.cta-form{display:flex;gap:10px;flex-wrap:wrap}
.cta-form input{flex:1;min-width:200px;height:48px;border:1px solid rgba(255,255,255,.3);background:rgba(255,255,255,.12);border-radius:10px;padding:0 16px;color:#fff;font-size:15px}
.cta-form input::placeholder{color:#C0CFF0}
.cta-form input:focus{outline:2px solid #fff;background:rgba(255,255,255,.18)}
.cta-form .btn{height:48px}
.cta-side-badges{display:flex;gap:10px;flex-wrap:wrap;justify-content:flex-end}
.cta-side-badges span{background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.2);padding:7px 14px;border-radius:999px;font-size:13px;font-weight:600}
/* footer */
.site-footer{background:#0C1A35;color:#AEBBD2;margin-top:0}
.footer-top{padding:64px 0 36px}
.footer-grid{display:grid;grid-template-columns:1.7fr 1fr 1fr 1fr;gap:36px}
.footer-brand .brand-name{color:#fff}
.footer-brand .brand-sub{color:var(--accent)}
.footer-brand p{margin-top:14px;color:#94A6C0;font-size:14px;max-width:280px;line-height:1.85}
.footer-col h4{color:#fff;font-size:15px;font-weight:800;margin-bottom:14px}
.footer-col ul li a{color:#AEBBD2;font-size:15px;line-height:32px;transition:color .2s ease}
.footer-col ul li a:hover{color:#fff;text-decoration:underline;text-underline-offset:4px}
.footer-bottom{border-top:1px solid rgba(255,255,255,.1);padding:20px 0;color:#7A8AA3;font-size:13px}
.footer-bottom-inner{display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap}
/* responsive */
@media(max-width:1024px){
.hero-inner{grid-template-columns:1fr;gap:40px}
.hero{padding-top:64px}
.hero-visual img{max-height:520px;object-fit:cover}
.section{padding:72px 0}
.pricing-grid{grid-template-columns:1fr;max-width:560px;margin:0 auto}
.case-layout{grid-template-columns:1fr}
.case-main .case-media{height:260px}
.case-sub-list{grid-template-rows:auto;grid-template-columns:1fr 1fr}
.faq-layout{grid-template-columns:1fr}
.faq-side{position:static}
.cta-banner{grid-template-columns:1fr;padding:48px 32px}
.cta-side-badges{justify-content:flex-start}
.footer-grid{grid-template-columns:1fr 1fr}
.services-grid{grid-template-columns:repeat(2,1fr)}
.service-card.span2{grid-column:span 1}
}
@media(max-width:800px){
.header-outer{padding:12px 12px 0}
.header-wrap{margin-left:0;margin-right:0;width:100%;border-radius:14px}
.header-wrap.stuck{width:calc(100% - 16px)}
.nav-toggle{display:flex}
.nav-links{display:none;width:100%}
.nav-links.open{display:block}
.nav-list{flex-direction:column;align-items:flex-start;padding:8px 0}
.nav-list li{width:100%}
.nav-list li a.nav-item,.nav-list li a.nav-cta-btn{width:100%;justify-content:center}
}
@media(max-width:640px){
.section{padding:58px 0}
.container,.grid-container{padding-left:18px;padding-right:18px}
.hero-title{font-size:29px}
.hero-lead{font-size:16px}
.hero-actions .btn{width:100%}
.section-desc{font-size:15px}
.services-grid{grid-template-columns:1fr}
.stats-grid{grid-template-columns:1fr 1fr;gap:16px}
.stat-num{font-size:36px}
.case-sub-list{grid-template-columns:1fr}
.case-sub-card{flex-direction:column;align-items:flex-start}
.case-sub-card .case-sub-media{width:100%}
.case-main .case-media{height:210px}
.faq-list details{padding:18px}
.faq-list summary{font-size:15px}
.faq-list summary:after{font-size:10px}
.cta-sec{padding:44px 0}
.cta-banner{padding:36px 22px;border-radius:20px}
.cta-banner h2{font-size:28px}
.cta-form input{width:100%;min-width:0}
.footer-grid{grid-template-columns:1fr;gap:28px}
.footer-bottom-inner{flex-direction:column}
.pricing-card.popular{transform:translateY(0)}
}
@media(max-width:380px){
.hero-metrics span{width:100%}
.stat-grid{grid-template-columns:1fr}
}

:root{--primary:#2F6BFF;--primary-dark:#1E4FB8;--primary-soft:#EAF1FE;--accent:#F2A65A;--bg:#F6F9FC;--card:#FFFFFF;--text:#172B4D;--text-2:#5E6E82;--text-3:#8A97A8;--border:#E2E9F0;--radius:20px;--radius-sm:10px;--shadow:0 10px 30px rgba(23,43,77,.06);--shadow-hover:0 18px 44px rgba(36,80,160,.12);--font:-apple-system,"PingFang SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif}
*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:var(--font);background:var(--bg);color:var(--text);font-size:16px;line-height:1.75;-webkit-font-smoothing:antialiased}
img{max-width:100%;height:auto;display:block}
a{color:var(--primary);text-decoration:none;transition:color .2s ease}
a:hover{color:var(--primary-dark)}
ul,ol{list-style:none}
input,button,textarea{font-family:inherit;font-size:inherit}
section{scroll-margin-top:90px}
.container,.grid-container{max-width:1200px;margin-left:auto;margin-right:auto;padding-left:24px;padding-right:24px}
.section{padding:70px 0}
.section-sm{padding:44px 0}
.text-center{text-align:center}
.mt-24{margin-top:24px}
.mt-16{margin-top:16px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:13px 26px;border-radius:var(--radius-sm);border:1px solid transparent;font-weight:700;font-size:15px;cursor:pointer;line-height:1.2;transition:all .25s ease}
.btn:focus-visible{outline:2px solid var(--primary);outline-offset:3px}
.btn-primary{background:var(--primary);border-color:var(--primary);color:#fff;box-shadow:0 12px 26px rgba(47,107,255,.24)}
.btn-primary:hover{background:var(--primary-dark);border-color:var(--primary-dark);color:#fff;transform:translateY(-2px)}
.btn-secondary{background:var(--primary-soft);border-color:transparent;color:var(--primary-dark)}
.btn-secondary:hover{background:#dbe7fd;color:var(--primary-dark)}
.btn-ghost{background:#fff;border-color:#D7DEE8;color:var(--text-2)}
.btn-ghost:hover{border-color:var(--primary);color:var(--primary);transform:translateY(-2px)}
.btn-lg{padding:15px 32px;font-size:16px;border-radius:12px}
.btn-sm{padding:8px 16px;font-size:13px}
.btn-block{width:100%}
.section-eyebrow{display:inline-flex;align-items:center;gap:6px;padding:7px 16px;border-radius:999px;background:var(--primary-soft);color:var(--primary-dark);font-size:13px;font-weight:800;letter-spacing:.06em}
.section-title{font-size:clamp(28px,3.4vw,42px);font-weight:800;line-height:1.25;letter-spacing:-.02em;margin:16px 0 10px}
.section-desc{font-size:16px;color:var(--text-2);line-height:1.8;max-width:680px}
.sec-head{max-width:760px;margin-bottom:40px}
.header-outer{position:relative;z-index:80;padding:16px 20px 0;background:transparent}
.header-wrap{max-width:1120px;margin:0 auto;background:rgba(255,255,255,.88);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);border:1px solid rgba(226,233,240,.85);box-shadow:0 8px 26px rgba(23,43,77,.06);border-radius:18px;padding:8px 16px;transition:all .25s ease;position:relative}
.header-wrap.stuck{position:fixed;top:12px;left:50%;transform:translateX(-50%);width:calc(100% - 40px);max-width:1120px;background:rgba(255,255,255,.96);box-shadow:0 16px 40px rgba(23,43,77,.14)}
.header-inner{display:flex;align-items:center;gap:16px;justify-content:space-between;flex-wrap:wrap}
.brand{display:flex;align-items:baseline;gap:8px;color:var(--text);padding:8px 4px}
.brand-name{font-size:20px;font-weight:800;color:var(--text);letter-spacing:-.01em}
.brand-sub{font-size:13px;font-weight:600;color:var(--primary)}
.nav-toggle{display:none;width:44px;height:44px;align-items:center;justify-content:center;border:1px solid var(--border);background:#fff;border-radius:10px;cursor:pointer;color:var(--text)}
.nav-links .nav-list{display:flex;align-items:center;gap:6px}
.nav-list li a.nav-item{display:inline-block;padding:10px 18px;border-radius:8px;color:var(--text-2);font-weight:600;font-size:15px;transition:all .2s ease}
.nav-list li a.nav-item:hover{background:var(--primary-soft);color:var(--primary-dark)}
.nav-list li a.nav-item.active{background:var(--primary-soft);color:var(--primary-dark);font-weight:700}
.nav-list li a.nav-cta-btn{display:inline-flex;align-items:center;background:var(--primary);color:#fff;border-radius:9px;padding:10px 18px;font-weight:700}
.nav-list li a.nav-cta-btn:hover{background:var(--primary-dark);color:#fff}
/* category hero */
.page-hero{padding:76px 0 50px;background:linear-gradient(180deg,#EDF3FE 0%,var(--bg) 100%);position:relative;overflow:hidden}
.page-hero:before{content:"";position:absolute;top:0;right:0;width:400px;height:400px;background-image:url('/assets/images/backpic/back-4.jpg');background-size:cover;background-position:center;opacity:.12;filter:saturate(.8)}
.breadcrumb{display:flex;gap:10px;align-items:center;font-size:14px;color:var(--text-3);margin-bottom:22px}
.breadcrumb a{color:var(--text-3)}
.breadcrumb a:hover{color:var(--primary)}
.breadcrumb i{font-size:10px}
.page-hero-inner{position:relative}
.page-hero h1{font-size:clamp(30px,4.4vw,48px);font-weight:800;line-height:1.25;letter-spacing:-.02em;max-width:900px}
.page-lead{font-size:17px;color:var(--text-2);margin-top:18px;max-width:760px;line-height:1.9}
.hero-scroll-tips{display:flex;gap:12px;flex-wrap:wrap;margin-top:28px}
.hero-scroll-tips span{background:#fff;border:1px solid var(--border);padding:7px 14px;border-radius:999px;font-size:13px;font-weight:600;color:var(--text-2);box-shadow:0 4px 12px rgba(23,43,77,.03)}
/* taxonomy */
.tax-cards{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.tax-card{position:relative;background:#fff;border:1px solid var(--border);border-radius:18px;padding:24px 22px 22px;box-shadow:var(--shadow);transition:all .25s ease;height:100%}
.tax-card:hover{box-shadow:var(--shadow-hover);border-color:#C8DCFF;transform:translateY(-2px)}
.tax-card .corner{position:absolute;top:-9px;left:18px;background:var(--primary);color:#fff;font-size:12px;font-weight:700;padding:3px 10px;border-radius:999px}
.tax-card .corner.hot{background:var(--accent);color:#3A2A13}
.tax-icon{width:48px;height:48px;border-radius:12px;background:var(--primary-soft);color:var(--primary);display:flex;align-items:center;justify-content:center;font-size:20px;margin-bottom:16px}
.tax-card h3{font-size:17px;font-weight:800}
.tax-card p{font-size:14px;color:var(--text-2);line-height:1.7;margin-top:8px}
/* main + sidebar */
.channel-grid{display:grid;grid-template-columns:2.4fr 1fr;gap:38px;align-items:flex-start;margin-top:22px}
.channel-list{display:flex;flex-direction:column;gap:18px}
.channel-card{display:grid;grid-template-columns:230px 1fr;gap:0;background:#fff;border:1px solid var(--border);border-radius:18px;overflow:hidden;box-shadow:var(--shadow);transition:all .25s ease}
.channel-card:hover{box-shadow:var(--shadow-hover);border-color:#C8DCFF;transform:translateY(-2px)}
.channel-card.hidden{display:none}
.channel-media{min-height:170px;overflow:hidden}
.channel-media img{width:100%;height:100%;object-fit:cover;min-height:170px}
.channel-content{padding:22px 24px;display:flex;flex-direction:column}
.channel-tag{display:inline-flex;width:fit-content;background:var(--primary-soft);color:var(--primary-dark);font-size:12px;font-weight:700;padding:3px 10px;border-radius:999px;margin-bottom:10px}
.channel-content h3{font-size:18px;font-weight:800;line-height:1.5;margin-bottom:8px;transition:color .2s ease}
.channel-card:hover .channel-content h3{color:var(--primary)}
.channel-content p{font-size:14px;color:var(--text-2);line-height:1.7}
.read-more{margin-top:12px;display:inline-flex;align-items:center;gap:6px;font-weight:700;font-size:14px;color:var(--primary)}
.read-more i{transition:transform .2s ease}
.channel-card:hover .read-more i{transform:translateX(4px)}
.load-btn-wrap{text-align:center;margin-top:30px}
.guide-sidebar{position:sticky;top:100px;display:flex;flex-direction:column;gap:24px}
.side-card{background:#fff;border:1px solid var(--border);border-radius:18px;padding:28px 24px;box-shadow:var(--shadow)}
.side-card.member{background:#0C2C63;border-color:#0C2C63;color:#fff}
.side-card.member h3{color:#fff}
.side-card.member p{color:#C5D5F5}
.side-card.member .btn{background:var(--accent);border-color:var(--accent);color:#3A2A13}
.side-card h3{font-size:17px;font-weight:800;margin-bottom:12px}
.side-card p{color:var(--text-2);font-size:14px;line-height:1.75}
.side-card .member-price{margin:14px 0;display:flex;gap:8px;align-items:center;font-size:14px;color:#AEC5F2}
.side-card .member-price strong{font-size:28px;color:#fff}
.hot-list li{display:flex;align-items:flex-start;gap:10px;padding:10px 0;border-bottom:1px dashed var(--border)}
.hot-list li:last-child{border-bottom:0}
.hot-list li i{color:var(--accent);margin-top:4px}
.hot-list li a{color:var(--text);font-weight:600;line-height:1.5}
.hot-list li a:hover{color:var(--primary)}
.faq-mini details{background:#fff;border:1px solid var(--border);border-radius:12px;padding:14px 16px;margin-top:12px}
.faq-mini summary{cursor:pointer;font-weight:700;font-size:14px;color:var(--text);list-style:none}
.faq-mini summary::before{content:"Q · ";color:var(--primary);font-weight:800}
.faq-mini summary::-webkit-details-marker{display:none}
.faq-mini .mini-answer{font-size:13px;color:var(--text-2);line-height:1.75;margin-top:10px;padding-top:10px;border-top:1px solid var(--border)}
/* extension */
.extension{background:#fff}
.ext-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.ext-card{border-radius:20px;overflow:hidden;background:#fff;border:1px solid var(--border);box-shadow:var(--shadow);transition:all .25s ease}
.ext-card:hover{box-shadow:var(--shadow-hover);transform:translateY(-3px);border-color:#C8DCFF}
.ext-media{height:220px;overflow:hidden;position:relative}
.ext-media img{width:100%;height:100%;object-fit:cover}
.ext-media .ext-label{position:absolute;left:14px;bottom:14px;background:rgba(12,44,99,.82);color:#fff;font-size:13px;font-weight:700;padding:7px 13px;border-radius:999px;backdrop-filter:blur(4px)}
.ext-body{padding:24px}
.ext-body h3{font-size:18px;font-weight:800;line-height:1.5}
.ext-body p{font-size:14px;color:var(--text-2);margin-top:8px;line-height:1.75}
/* cta strip */
.category-cta{padding:76px 0;background:#fff}
.cta-strip{background:linear-gradient(140deg,#0B2A6B,#1E4FB8);border-radius:24px;color:#fff;padding:46px 52px;display:flex;align-items:center;justify-content:space-between;gap:28px;box-shadow:0 22px 48px rgba(11,42,107,.28);flex-wrap:wrap}
.cta-strip h2{font-size:24px;font-weight:800;line-height:1.4}
.cta-strip p{color:#D0DFFA;margin-top:6px;max-width:560px}
.cta-strip .btn{background:var(--accent);border-color:var(--accent);color:#3A2A13}
.cta-strip .btn:hover{background:#F0B372;color:#3A2A13}
/* footer */
.site-footer{background:#0C1A35;color:#AEBBD2}
.footer-top{padding:64px 0 36px}
.footer-grid{display:grid;grid-template-columns:1.7fr 1fr 1fr 1fr;gap:36px}
.footer-brand .brand-name{color:#fff}
.footer-brand .brand-sub{color:var(--accent)}
.footer-brand p{margin-top:14px;color:#94A6C0;font-size:14px;max-width:280px;line-height:1.85}
.footer-col h4{color:#fff;font-size:15px;font-weight:800;margin-bottom:14px}
.footer-col ul li a{color:#AEBBD2;font-size:15px;line-height:32px;transition:color .2s ease}
.footer-col ul li a:hover{color:#fff;text-decoration:underline;text-underline-offset:4px}
.footer-bottom{border-top:1px solid rgba(255,255,255,.1);padding:20px 0;color:#7A8AA3;font-size:13px}
.footer-bottom-inner{display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap}
@media(max-width:1024px){
.channel-grid{grid-template-columns:1fr}
.guide-sidebar{position:static;display:grid;grid-template-columns:1fr 1fr}
.tax-cards{grid-template-columns:1fr 1fr}
.section{padding:58px 0}
}
@media(max-width:800px){
.header-outer{padding:12px 12px 0}
.header-wrap{margin-left:0;margin-right:0;width:100%}
.header-wrap.stuck{width:calc(100% - 16px)}
.nav-toggle{display:flex}
.nav-links{display:none;width:100%}
.nav-links.open{display:block}
.nav-list{flex-direction:column;align-items:flex-start;padding:8px 0}
.nav-list li{width:100%}
.nav-list li a.nav-item,.nav-list li a.nav-cta-btn{width:100%;justify-content:center}
.page-hero{padding:48px 0 38px}
.guide-sidebar{grid-template-columns:1fr}
.cta-strip{padding:30px 24px}
}
@media(max-width:640px){
.container,.grid-container{padding-left:18px;padding-right:18px}
.tax-cards{grid-template-columns:1fr}
.channel-card{grid-template-columns:1fr}
.channel-media,.channel-media img{min-height:210px}
.ext-grid{grid-template-columns:1fr}
.footer-grid{grid-template-columns:1fr;gap:28px}
.footer-bottom-inner{flex-direction:column}
.page-hero h1{font-size:29px}
.page-lead{font-size:15px}
.guide-sidebar{position:static}
.category-cta{padding:50px 0}
}

/* roulang page: category1 */
:root{
--primary:#2F6BFF;--primary-dark:#1E4FB8;--primary-soft:#EAF1FE;--accent:#F2A65A;--bg:#F6F9FC;--card:#FFFFFF;--text:#172B4D;--text-2:#5E6E82;--text-3:#8A97A8;--border:#E2E9F0;--radius:20px;--radius-sm:10px;--shadow:0 10px 30px rgba(23,43,77,.06);--shadow-hover:0 18px 44px rgba(36,80,160,.12);--font:-apple-system,"PingFang SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif}
html{scroll-behavior:smooth}
body{font-family:var(--font);background:var(--bg);color:var(--text);font-size:16px;line-height:1.75;letter-spacing:.01em;-webkit-font-smoothing:antialiased}
img{max-width:100%;height:auto;display:block}
a{color:var(--primary);text-decoration:none;transition:color .2s ease}
a:hover{color:var(--primary-dark)}
input,button,textarea{font-family:inherit;font-size:inherit}
section{scroll-margin-top:90px}
.container,.grid-container{max-width:1200px;margin-left:auto;margin-right:auto;padding-left:24px;padding-right:24px}
.section{padding:96px 0}
.text-center{text-align:center}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:14px 28px;border-radius:var(--radius-sm);border:1px solid transparent;font-weight:700;font-size:15px;cursor:pointer;line-height:1.2;transition:all .25s ease;background:transparent}
.btn:focus-visible{outline:2px solid var(--primary);outline-offset:3px}
.btn-primary{background:var(--primary);border-color:var(--primary);color:#fff;box-shadow:0 12px 26px rgba(47,107,255,.24)}
.btn-primary:hover{background:var(--primary-dark);border-color:var(--primary-dark);color:#fff;transform:translateY(-2px);box-shadow:0 16px 30px rgba(30,79,184,.24)}
.btn-secondary{background:var(--primary-soft);border-color:transparent;color:var(--primary-dark)}
.btn-secondary:hover{background:#dbe7fd;color:var(--primary-dark);transform:translateY(-2px)}
.btn-ghost{background:#fff;border-color:#D7DEE8;color:var(--text-2)}
.btn-ghost:hover{border-color:var(--primary);color:var(--primary);transform:translateY(-2px)}
.btn-lg{padding:16px 34px;font-size:16px;border-radius:12px}
.section-eyebrow{display:inline-flex;align-items:center;gap:6px;padding:7px 16px;border-radius:999px;background:var(--primary-soft);color:var(--primary-dark);font-size:13px;font-weight:800;letter-spacing:.06em}
.section-title{font-size:clamp(26px,3.2vw,38px);font-weight:800;line-height:1.25;letter-spacing:-.02em;margin:18px 0 12px}
.section-desc{font-size:17px;color:var(--text-2);line-height:1.8;max-width:680px}

/* header 内缩圆角浮动导航 */
.header-outer{position:relative;z-index:80;padding:18px 24px 0;background:transparent}
.header-wrap{max-width:1180px;margin:0 auto;background:rgba(255,255,255,.9);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);border:1px solid rgba(226,233,240,.9);box-shadow:0 8px 26px rgba(23,43,77,.06);border-radius:18px;padding:8px 18px;transition:all .25s ease;position:relative}
.header-wrap.stuck{position:fixed;top:12px;left:50%;transform:translateX(-50%);width:calc(100% - 48px);max-width:1180px;background:rgba(255,255,255,.97);box-shadow:0 16px 40px rgba(23,43,77,.14)}
.header-inner{display:flex;align-items:center;gap:16px;justify-content:space-between;flex-wrap:wrap}
.brand{display:flex;align-items:baseline;gap:8px;color:var(--text);padding:8px 4px}
.brand-name{font-size:20px;font-weight:800;color:var(--text);letter-spacing:-.01em}
.brand-sub{font-size:13px;font-weight:700;color:var(--primary)}
.nav-toggle{display:none;width:44px;height:44px;align-items:center;justify-content:center;border:1px solid var(--border);background:#fff;border-radius:10px;cursor:pointer;color:var(--text)}
.nav-links .nav-list{display:flex;align-items:center;gap:4px}
.nav-list li a.nav-item{display:inline-block;padding:10px 18px;border-radius:8px;color:var(--text-2);font-weight:600;font-size:15px;transition:all .2s ease}
.nav-list li a.nav-item:hover{background:var(--primary-soft);color:var(--primary-dark)}
.nav-list li a.nav-item.active{background:var(--primary-soft);color:var(--primary-dark);font-weight:700}
.nav-list li a.nav-cta-btn{display:inline-flex;align-items:center;background:var(--primary);color:#fff;border-radius:9px;padding:10px 18px;font-weight:700}
.nav-list li a.nav-cta-btn:hover{background:var(--primary-dark);color:#fff}

/* 分类页标题区 */
.cat-hero{padding:70px 0 26px;position:relative}
.cat-hero-inner{max-width:820px;margin:0 auto;text-align:center}
.breadcrumb{display:inline-flex;flex-wrap:wrap;justify-content:center;gap:6px;background:#fff;border:1px solid var(--border);border-radius:999px;padding:6px 18px;font-size:13px;color:var(--text-3);box-shadow:var(--shadow);margin-bottom:24px}
.breadcrumb a{color:var(--text-3);font-weight:600}
.breadcrumb a:hover{color:var(--primary)}
.breadcrumb i{font-size:11px;color:#B4C0D0;margin:0 2px}
.cat-hero h1{font-size:clamp(30px,4.4vw,48px);font-weight:800;line-height:1.22;letter-spacing:-.03em;margin:0 0 14px}
.cat-hero h1 span{color:var(--primary)}
.cat-hero p{font-size:17px;color:var(--text-2);line-height:1.85;max-width:680px;margin:6px auto 0}

/* 快捷分类卡区 */
.quick-cards{padding:44px 0 20px}
.quick-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.quick-card{position:relative;background:#fff;border:1px solid var(--border);border-radius:16px;padding:24px 20px 20px;transition:all .25s ease;box-shadow:var(--shadow)}
.quick-card:hover{transform:translateY(-4px);border-color:#C6DAFF;box-shadow:var(--shadow-hover)}
.quick-card .corner-badge{position:absolute;top:14px;right:14px;background:var(--primary-soft);color:var(--primary-dark);font-size:12px;font-weight:800;border-radius:999px;padding:3px 10px}
.quick-card .corner-badge.hot{background:#FFF2E3;color:#D9822B}
.quick-card .corner-badge.green{background:#E7F6EC;color:#1E9E5A}
.quick-card .corner-badge.purple{background:#F0EAFE;color:#7B49DC}
.quick-icon{width:44px;height:44px;border-radius:12px;background:var(--primary-soft);display:flex;align-items:center;justify-content:center;color:var(--primary);font-size:18px;margin-bottom:14px}
.quick-card h3{font-size:18px;font-weight:800;margin:0 0 6px;color:var(--text)}
.quick-card p{font-size:14px;color:var(--text-2);line-height:1.7;margin:0}

/* 主体内容区 */
.cat-main{padding:48px 0 70px}
.article-list-item{display:flex;gap:22px;background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:18px;box-shadow:var(--shadow);transition:all .25s ease;margin-bottom:20px}
.article-list-item:hover{box-shadow:var(--shadow-hover);transform:translateY(-2px);border-color:#C9DEFF}
.article-thumb{flex:0 0 260px;width:260px;border-radius:14px;overflow:hidden;position:relative;min-height:160px}
.article-thumb img{width:100%;height:100%;object-fit:cover;position:absolute;inset:0}
.article-thumb .cat-label{position:absolute;left:10px;top:10px;background:rgba(255,255,255,.9);border-radius:999px;font-size:12px;font-weight:700;color:var(--primary-dark);padding:3px 10px;z-index:2}
.article-body{flex:1;padding:4px 0}
.article-body h3{font-size:19px;font-weight:800;margin:0 0 8px;line-height:1.45}
.article-body h3 a{color:var(--text)}
.article-body h3 a:hover{color:var(--primary)}
.article-body p{font-size:14px;color:var(--text-2);line-height:1.75;margin:0 0 12px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.article-tags{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:12px}
.chip{display:inline-flex;background:var(--primary-soft);color:var(--primary-dark);font-size:13px;font-weight:600;border-radius:6px;padding:3px 10px}
.chip.orange{background:#FFF2E3;color:#D9822B}
.article-foot{margin-top:2px}
.article-link{display:inline-flex;align-items:center;gap:6px;font-weight:700;font-size:14px}
.article-link i{font-size:12px;transition:transform .2s ease}
.article-link:hover i{transform:translateX(4px)}

/* 侧边栏 */
.side-bar .side-card{background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:22px;margin-bottom:20px;box-shadow:var(--shadow)}
.member-card-special{background:linear-gradient(140deg,#EAF1FE 0%,#F6F9FC 65%);border:1px solid #D7E5FF;border-radius:var(--radius);padding:26px 22px;margin-bottom:20px;position:relative;overflow:hidden}
.member-card-special:after{content:"\f0f3";position:absolute;right:-10px;bottom:-18px;font-family:"Font Awesome 6 Free";font-weight:900;font-size:88px;color:rgba(47,107,255,.07)}
.member-card-special .m-icon{width:44px;height:44px;border-radius:12px;background:var(--primary);color:#fff;display:flex;align-items:center;justify-content:center;font-size:18px;margin-bottom:12px}
.member-card-special h3{font-size:18px;font-weight:800;color:var(--text);line-height:1.4;margin:0 0 6px}
.member-card-special p{font-size:14px;color:var(--text-2);line-height:1.7;margin:0 0 16px}
.side-card .side-title{display:flex;align-items:center;gap:8px;font-size:16px;font-weight:800;color:var(--text);margin:0 0 16px;padding-bottom:12px;border-bottom:1px solid var(--border)}
.side-card .side-title i{color:var(--primary)}
.side-list{list-style:none;margin:0;padding:0}
.side-list li{margin-bottom:2px}
.side-list a{display:flex;align-items:center;justify-content:space-between;padding:10px 12px;border-radius:10px;color:var(--text-2);font-size:14px;font-weight:600;transition:all .2s ease}
.side-list a:hover{background:var(--primary-soft);color:var(--primary-dark)}
.side-list a i{font-size:12px;opacity:.5}
.side-faq summary{display:flex;align-items:center;justify-content:space-between;gap:10px;cursor:pointer;padding:12px 0;border-bottom:1px solid var(--border);font-size:14px;font-weight:700;color:var(--text);list-style:none;transition:color .2s}
.side-faq summary::-webkit-details-marker{display:none}
.side-faq summary:hover{color:var(--primary)}
.side-faq summary i{color:var(--primary);font-size:11px;transition:transform .25s ease;flex-shrink:0}
.side-faq details[open] summary{border-bottom-color:transparent;color:var(--primary)}
.side-faq details[open] summary i{transform:rotate(45deg)}
.side-faq .faq-answer{padding:0 0 12px;font-size:13.5px;color:var(--text-2);line-height:1.7}

/* 加载更多 */
.load-more-wrap{text-align:center;margin:34px 0 0}
.load-more-btn{display:inline-flex;align-items:center;gap:8px;background:#fff;border:1.5px solid var(--primary);color:var(--primary);font-weight:700;padding:13px 34px;border-radius:10px;font-size:15px;transition:all .25s;cursor:pointer}
.load-more-btn:hover{background:var(--primary);color:#fff;box-shadow:0 12px 24px rgba(47,107,255,.2)}
.load-more-btn:active{transform:translateY(1px)}

/* 延伸区 */
.extends{padding:0 0 80px}
.extend-title{display:flex;align-items:center;gap:10px;font-size:22px;font-weight:800;color:var(--text);margin-bottom:24px}
.extend-title i{color:var(--primary)}
.extend-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.extend-card{position:relative;border-radius:var(--radius);overflow:hidden;min-height:210px;display:flex;align-items:flex-end;box-shadow:var(--shadow);border:1px solid var(--border)}
.extend-card img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;z-index:0}
.extend-card:after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(23,43,77,.05) 0%,rgba(23,43,77,.88) 100%);z-index:1}
.extend-body{position:relative;z-index:2;padding:24px;color:#fff;width:100%}
.extend-body .e-tag{display:inline-block;background:rgba(255,255,255,.22);backdrop-filter:blur(4px);border-radius:999px;font-size:12px;font-weight:700;padding:2px 11px;margin-bottom:9px}
.extend-body h3{font-size:18px;font-weight:800;margin:0 0 5px;line-height:1.4}
.extend-body p{font-size:14px;opacity:.9;margin:0;line-height:1.65;max-width:420px}
.extend-card .extend-arrow{position:absolute;top:18px;right:20px;z-index:2;width:36px;height:36px;background:rgba(255,255,255,.95);border-radius:50%;display:flex;align-items:center;justify-content:center;color:var(--primary);box-shadow:0 4px 12px rgba(23,43,77,.12)}
.extend-card .extend-arrow i{font-size:13px}

/* FAQ 折叠区 */
.faq-wrap{padding:96px 0}
.faq-grid{display:grid;grid-template-columns:1.8fr .9fr;gap:50px;align-items:start}
.faq-left-desc{color:var(--text-2);font-size:16px;line-height:1.8;max-width:560px;margin:0 0 34px}
.faq-accordion{}
.faq-accordion details{background:#fff;border:1px solid var(--border);border-radius:14px;margin-bottom:14px;padding:2px 22px;transition:all .25s ease;box-shadow:var(--shadow)}
.faq-accordion details:hover{border-color:#C9DEFF}
.faq-accordion details[open]{border-color:#BFD6FF;box-shadow:var(--shadow-hover)}
.faq-accordion summary{display:flex;align-items:center;justify-content:space-between;gap:12px;cursor:pointer;list-style:none;padding:17px 0;font-size:16px;font-weight:800;color:var(--text);line-height:1.55}
.faq-accordion summary::-webkit-details-marker{display:none}
.faq-accordion summary i{color:var(--primary);font-size:13px;transition:transform .25s ease;flex-shrink:0;border:1px solid var(--border);border-radius:50%;width:28px;height:28px;display:flex;align-items:center;justify-content:center}
.faq-accordion details[open] summary i{transform:rotate(45deg);background:var(--primary);color:#fff;border-color:var(--primary)}
.faq-answer{padding:0 0 18px;color:var(--text-2);font-size:15px;line-height:1.8;border-top:1px dashed var(--border)}
.faq-answer p{margin:12px 0 0}

/* 侧卡 still */
.help-side{background:var(--primary-dark);border-radius:var(--radius);padding:28px 24px;color:#fff;position:relative;overflow:hidden}
.help-side:after{content:"\f1fa";position:absolute;right:-10px;bottom:-14px;font-family:"Font Awesome 6 Free";font-weight:900;font-size:80px;color:rgba(255,255,255,.07)}
.help-side h3{font-size:20px;font-weight:800;margin:0 0 10px;color:#fff}
.help-side p{font-size:14px;line-height:1.75;color:rgba(255,255,255,.82);margin:0 0 22px}
.help-side .btn-light{display:inline-flex}

/* footer */
.site-footer{background:#101B2C;color:#C6D0DD;padding-top:70px}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:34px}
.footer-brand .brand-name{color:#EAF1FE;font-size:22px}
.footer-brand .brand-sub{color:#7CA6FF}
.footer-brand p{font-size:14px;line-height:1.8;color:#8FA0B5;max-width:340px;margin:14px 0 0;text-align:left}
.footer-col h4{font-size:15px;color:#EAF1FE;font-weight:700;margin:10px 0 15px;letter-spacing:.04em}
.footer-col ul{list-style:none;margin:0;padding:0}
.footer-col ul li{margin-bottom:9px}
.footer-col ul a{color:#8FA0B5;font-size:14px;line-height:1.6;transition:all .2s}
.footer-col ul a:hover{color:#fff;padding-left:3px;text-decoration:none}
.footer-bottom{border-top:1px solid rgba(255,255,255,.09);margin-top:52px;padding:22px 0}
.footer-bottom-inner{display:flex;justify-content:space-between;flex-wrap:wrap;gap:8px;font-size:13px;color:#67788F}
.footer-bottom-inner span{display:inline-block}